diff --git a/.env.example b/.env.example
index a81f2c4..bf2fbe5 100644
--- a/.env.example
+++ b/.env.example
@@ -129,6 +129,18 @@ AI_GENERATION_RETENTION_DAYS=180
 # Import-Extraktion ab. 0 = unbegrenzt.
 AI_MONTHLY_TOKEN_LIMIT=0
 
+# --- Craftvia: Planung – Karten & Geocoding (L13) ---
+# Adresse → Koordinaten nur serverseitig im Worker (Job geocode-site, max. 1 Anfrage/s),
+# Ergebnis wird am Objekt gespeichert. nominatim | none (none = keine Verortung, Objekte
+# erscheinen „ohne Ortsangabe“). Für Produktion eigenen/vertraglichen Dienst verwenden.
+GEOCODING_PROVIDER=nominatim
+# GEOCODING_URL=https://nominatim.openstreetmap.org
+# Eindeutiger User-Agent (Nominatim-Richtlinie); leer = "Craftvia/<version> (+APP_BASE_URL)".
+# GEOCODING_USER_AGENT=
+# Kartenkacheln der Live-Lage; der Host wird beim Build in die CSP (img-src) übernommen.
+# MAP_TILE_URL=https://tile.openstreetmap.org/{z}/{x}/{y}.png
+# MAP_ATTRIBUTION=© OpenStreetMap-Mitwirkende
+
 # --- Optionale Fundament-Variablen (Default leer) ---
 # MFA_ENC_KEY: Schlüssel für TOTP-Secrets at-rest (leer = aus AUTH_SECRET abgeleitet).
 # ⚠ Nach dem Setzen nicht mehr ändern.
diff --git a/scripts/craftvia-worker.ts b/scripts/craftvia-worker.ts
index 649e67e..f2a53de 100644
--- a/scripts/craftvia-worker.ts
+++ b/scripts/craftvia-worker.ts
@@ -18,8 +18,9 @@ async function main() {
       continue;
     }
     const processor = await load();
-    const concurrency = name === JOB_QUEUES.reportPdf ? 2 : 4;
-    const w = new Worker<JobPayload>(name, async (job) => processor(job.data), { connection, concurrency });
+    const geocode = name === JOB_QUEUES.geocodeSite; // L13: OSM Nominatim policy — max. 1 request/s
+    const concurrency = name === JOB_QUEUES.reportPdf ? 2 : geocode ? 1 : 4;
+    const w = new Worker<JobPayload>(name, async (job) => processor(job.data), { connection, concurrency, ...(geocode ? { limiter: { max: 1, duration: 1_000 } } : {}) });
     w.on("failed", (job, err) => console.error(`[worker] ${name} job ${job?.id} failed:`, err.message));
     workers.push(w);
     console.info(`[worker] listening on ${name}`);
diff --git a/scripts/geocode-backfill.ts b/scripts/geocode-backfill.ts
new file mode 100644
index 0000000..0d68ab6
--- /dev/null
+++ b/scripts/geocode-backfill.ts
@@ -0,0 +1,81 @@
+/**
+ * L13 Planung — geocode sites that have no (or outdated) coordinates, respecting the OSM Nominatim
+ * usage policy: strictly sequential, max. 1 request per second (process-wide limiter in the
+ * provider), identifying User-Agent, results cached on the site (unchanged addresses are skipped).
+ * Manually entered coordinates are never overwritten.
+ *
+ * Usage:
+ *   npx tsx scripts/geocode-backfill.ts                    # all tenants
+ *   npx tsx scripts/geocode-backfill.ts --tenant=demo --limit=50
+ *   npx tsx scripts/geocode-backfill.ts --dry-run          # only list what would be geocoded
+ *   npx tsx scripts/geocode-backfill.ts --retry-not-found  # also retry addresses marked not_found
+ *
+ * For larger data sets use a self-hosted or contracted geocoding service (GEOCODING_URL).
+ */
+import "dotenv/config";
+import { isValidLatLng } from "../src/lib/geo/distance";
+import { dbForTenant, prisma } from "../src/server/db";
+import { geocodingConfig } from "../src/server/services/geo/config";
+import { geocodeSite, type GeocodeOutcome } from "../src/server/services/geo/geocode-site";
+import { geocodeQueryFor } from "../src/server/services/geo/normalize";
+
+const arg = (name: string) => process.argv.find((a) => a.startsWith(`--${name}=`))?.split("=")[1];
+const flag = (name: string) => process.argv.includes(`--${name}`);
+
+async function main() {
+  const cfg = geocodingConfig();
+  const dryRun = flag("dry-run");
+  const retryNotFound = flag("retry-not-found");
+  const limit = Number(arg("limit") ?? Infinity);
+  const slug = arg("tenant");
+  if (cfg.provider === "none" && !dryRun) {
+    console.log("GEOCODING_PROVIDER=none — nichts zu tun.");
+    return;
+  }
+  console.log(`Provider ${cfg.provider} (${cfg.url}), User-Agent "${cfg.userAgent}", ≤ 1 Anfrage/s${dryRun ? " — Probelauf" : ""}`);
+
+  const tenants = await prisma.tenant.findMany({ where: slug ? { slug } : {}, select: { id: true, slug: true }, orderBy: { slug: "asc" } });
+  const totals: Record<string, number> = {};
+  let done = 0;
+  for (const tenant of tenants) {
+    const db = dbForTenant(tenant.id);
+    const sites = await db.site.findMany({
+      where: { deletedAt: null },
+      select: { id: true, name: true, street: true, houseNumber: true, postalCode: true, city: true, country: true, latitude: true, longitude: true, geocodedAt: true, geocodeStatus: true, geocodeQuery: true },
+      orderBy: { createdAt: "asc" },
+    });
+    const pending = sites.filter((s) => {
+      const query = geocodeQueryFor(s);
+      if (!query) return false;
+      if (isValidLatLng(s) && !s.geocodedAt) return false; // manual coordinates
+      if (s.geocodeQuery !== query) return true;
+      if (s.geocodeStatus === "ok") return false;
+      if (s.geocodeStatus === "not_found") return retryNotFound;
+      return true;
+    });
+    if (!pending.length) continue;
+    console.log(`\n${tenant.slug}: ${pending.length} Objekt(e)`);
+    for (const site of pending) {
+      if (done >= limit) break;
+      done++;
+      if (dryRun) {
+        console.log(`  · ${site.name} (${[site.postalCode, site.city].filter(Boolean).join(" ")})`);
+        continue;
+      }
+      if (retryNotFound && site.geocodeStatus === "not_found") await db.site.update({ where: { id: site.id }, data: { geocodeStatus: null } });
+      const outcome: GeocodeOutcome = await geocodeSite(tenant.id, site.id);
+      totals[outcome] = (totals[outcome] ?? 0) + 1;
+      console.log(`  ${outcome.padEnd(9)} ${site.name}`);
+    }
+  }
+  console.log(`\nFertig: ${done} Objekt(e) ${JSON.stringify(totals)}`);
+}
+
+main()
+  .catch((err) => {
+    console.error(err);
+    process.exitCode = 1;
+  })
+  .finally(async () => {
+    await prisma.$disconnect();
+  });
diff --git a/scripts/test-planung-geocode.ts b/scripts/test-planung-geocode.ts
new file mode 100644
index 0000000..8f834dc
--- /dev/null
+++ b/scripts/test-planung-geocode.ts
@@ -0,0 +1,178 @@
+// L13 Planung — Geocoding: Normalisierung/Änderungserkennung, Nominatim-Anfrage (URL, User-Agent,
+// Accept-Language, Auswertung, Fehler) mit injiziertem fetch, Drosselung 1/s mit Fake-Uhr, Processor mit
+// Fake-Provider (Cache bei unveränderter Adresse, not_found, failed → Retry, manuelle Koordinaten,
+// Provider none, Mandantentrennung), Hook beim Anlegen ohne Inline-Aufruf. Nominatim wird NIE aufgerufen.
+// Lauf: npx tsx scripts/test-planung-geocode.ts
+
+import "dotenv/config";
+import { prisma } from "../src/server/db";
+import { createTenant, ok, runSuite, section } from "./lib/e2e-fixture";
+import { geocodingConfig, mapConfig } from "../src/server/services/geo/config";
+import { requestSiteGeocoding } from "../src/server/services/geo/dispatch";
+import { geocodeSite } from "../src/server/services/geo/geocode-site";
+import { buildNominatimUrl, createNominatimProvider } from "../src/server/services/geo/nominatim";
+import { addressChanged, geocodeQueryFor } from "../src/server/services/geo/normalize";
+import { GeocodingError, setGeocodingProvider, type GeocodeAddress, type GeocodingProvider } from "../src/server/services/geo/provider";
+import { createIntervalLimiter } from "../src/server/services/geo/rate-limit";
+import { process as geocodeProcessor } from "../src/server/jobs/processors/geocode-site";
+import { PROCESSORS } from "../src/server/jobs/processors";
+import { createSite } from "../src/server/services/sites/sites";
+
+const SLUG_A = "zz-planung-geo-a";
+const SLUG_B = "zz-planung-geo-b";
+
+// Guard: any request to a Nominatim host fails the suite.
+let nominatimHits = 0;
+const realFetch = globalThis.fetch;
+globalThis.fetch = (async (input: RequestInfo | URL, init?: RequestInit) => {
+  const url = input instanceof Request ? input.url : String(input);
+  if (/nominatim|openstreetmap/i.test(url)) {
+    nominatimHits++;
+    throw new Error("Nominatim must never be called from tests");
+  }
+  return realFetch(input, init);
+}) as typeof fetch;
+
+function fakeProvider(answer: (a: GeocodeAddress) => { status: "ok"; latitude: number; longitude: number } | { status: "not_found" } | "throw") {
+  const calls: GeocodeAddress[] = [];
+  const provider: GeocodingProvider = {
+    name: "fake",
+    async geocode(a) {
+      calls.push(a);
+      const r = answer(a);
+      if (r === "throw") throw new GeocodingError("http 503");
+      return r;
+    },
+  };
+  return { provider, calls };
+}
+
+runSuite("L13 Planung – Geocoding", [SLUG_A, SLUG_B], async () => {
+  section("Normalisierung & Änderungserkennung");
+  const addr = { street: "Hafenstraße", houseNumber: "12", postalCode: "20457", city: "Hamburg", country: "DE" };
+  ok(geocodeQueryFor(addr) === "hafenstraße 12|20457|hamburg|de", `normierte Adresse (${geocodeQueryFor(addr)})`);
+  ok(geocodeQueryFor({ ...addr, street: "  HAFENSTRASSE ".replace("SS", "ß"), city: "hamburg " }) === geocodeQueryFor(addr), "Groß-/Kleinschreibung und Leerzeichen egal");
+  ok(geocodeQueryFor({ street: "Hafenstraße", houseNumber: "12" }) === null, "ohne PLZ und Ort → nicht verortbar");
+  ok(!addressChanged(addr, { ...addr, city: "HAMBURG" }) && addressChanged(addr, { ...addr, houseNumber: "14" }), "nur relevante Adressänderungen zählen");
+
+  section("Nominatim-Anfrage (ohne Netz)");
+  const url = buildNominatimUrl("https://nominatim.example/", addr);
+  ok(
+    url.pathname === "/search" && url.searchParams.get("format") === "jsonv2" && url.searchParams.get("limit") === "1" && url.searchParams.get("street") === "12 Hafenstraße" && url.searchParams.get("postalcode") === "20457" && url.searchParams.get("city") === "Hamburg" && url.searchParams.get("countrycodes") === "de",
+    `strukturierte Suche (${url.search})`,
+  );
+  const cfg = geocodingConfig({ APP_BASE_URL: "https://app.craftvia.example" });
+  ok(/^Craftvia\/\d+\.\d+\.\d+ \(\+https:\/\/app\.craftvia\.example\)$/.test(cfg.userAgent) && cfg.url === "https://nominatim.openstreetmap.org" && cfg.provider === "nominatim", `Standard-User-Agent „${cfg.userAgent}“`);
+  ok(geocodingConfig({ GEOCODING_USER_AGENT: "Betrieb/1 (+mailto:it@example.org)", GEOCODING_PROVIDER: "none", GEOCODING_URL: "https://geo.example/" }).userAgent === "Betrieb/1 (+mailto:it@example.org)", "User-Agent per GEOCODING_USER_AGENT überschreibbar");
+  ok(geocodingConfig({ GEOCODING_PROVIDER: "none" }).provider === "none" && geocodingConfig({ GEOCODING_URL: "https://geo.example/" }).url === "https://geo.example", "Provider none / eigene GEOCODING_URL");
+  ok(mapConfig({}).tileUrl === "https://tile.openstreetmap.org/{z}/{x}/{y}.png" && mapConfig({}).attribution.includes("OpenStreetMap"), "Kartenkacheln: OSM-Standard mit Namensnennung");
+
+  const seen: { url: string; headers: Headers }[] = [];
+  let reply: () => Response = () => Response.json([{ lat: "53.5413", lon: "9.9849" }]);
+  const acquired: number[] = [];
+  const nominatim = createNominatimProvider(
+    { url: "https://nominatim.example", userAgent: "Craftvia/test (+https://app.example)", timeoutMs: 1000 },
+    {
+      fetch: (async (input: RequestInfo | URL, init?: RequestInit) => {
+        seen.push({ url: String(input), headers: new Headers(init?.headers) });
+        return reply();
+      }) as typeof fetch,
+      limiter: { acquire: async () => (acquired.push(Date.now()), Date.now()) },
+    },
+  );
+  const hit = await nominatim.geocode(addr);
+  ok(hit.status === "ok" && hit.latitude === 53.5413 && hit.longitude === 9.9849, "Treffer ausgewertet");
+  ok(seen[0]?.headers.get("user-agent") === "Craftvia/test (+https://app.example)" && seen[0].headers.get("accept-language") === "de", "User-Agent und Accept-Language de gesetzt");
+  ok(acquired.length === 1, "jede Anfrage läuft über den Drosselungs-Limiter");
+  reply = () => Response.json([]);
+  ok((await nominatim.geocode(addr)).status === "not_found", "leere Antwort → not_found");
+  reply = () => new Response("busy", { status: 503 });
+  let threw = false;
+  try {
+    await nominatim.geocode(addr);
+  } catch (err) {
+    threw = err instanceof GeocodingError;
+  }
+  ok(threw, "HTTP-Fehler → GeocodingError (wiederholbar)");
+
+  section("Drosselung 1 Anfrage/s (Fake-Uhr)");
+  let clock = 10_000;
+  const sleeps: number[] = [];
+  const limiter = createIntervalLimiter(1000, { now: () => clock, sleep: async (ms) => void sleeps.push(ms) });
+  const slots = [await limiter.acquire(), await limiter.acquire(), await limiter.acquire()];
+  ok(slots[0] === 10_000 && slots[1] === 11_000 && slots[2] === 12_000 && sleeps.join(",") === "1000,2000", `Slots im Sekundenabstand (${slots.join(",")}), Wartezeiten ${sleeps.join(",")}`);
+  clock = 20_000;
+  ok((await limiter.acquire()) === 20_000 && sleeps.length === 2, "nach Pause sofort wieder frei");
+
+  section("geocodeSite mit Fake-Provider");
+  const A = await createTenant(SLUG_A);
+  const B = await createTenant(SLUG_B);
+  const fake = fakeProvider((a) => (a.city === "Nirgendwo" ? { status: "not_found" } : { status: "ok", latitude: 53.55, longitude: a.houseNumber === "14" ? 10.01 : 10.0 }));
+  setGeocodingProvider(fake.provider);
+  const site = await prisma.site.create({ data: { tenantId: A.tenantId, customerId: A.customerId, name: "Geo 1", ...addr } });
+
+  ok((await geocodeSite(A.tenantId, site.id)) === "ok" && fake.calls.length === 1, "neue Adresse → ok, 1 Provider-Aufruf");
+  const s1 = await prisma.site.findUniqueOrThrow({ where: { id: site.id } });
+  ok(s1.latitude === 53.55 && s1.longitude === 10.0 && s1.geocodeStatus === "ok" && s1.geocodeQuery === geocodeQueryFor(addr) && !!s1.geocodedAt, "Koordinaten, Status, Adresse und Zeitpunkt am Objekt gespeichert");
+  ok((await prisma.auditLog.count({ where: { tenantId: A.tenantId, entity: "site", entityId: site.id, action: "update" } })) === 1, "Koordinatenänderung auditiert");
+  ok((await geocodeSite(A.tenantId, site.id)) === "cached" && fake.calls.length === 1, "unveränderte Adresse → Cache, kein weiterer Aufruf");
+  await prisma.site.update({ where: { id: site.id }, data: { city: "hamburg " } });
+  ok((await geocodeSite(A.tenantId, site.id)) === "cached" && fake.calls.length === 1, "nur Schreibweise geändert → Cache");
+  await prisma.site.update({ where: { id: site.id }, data: { houseNumber: "14" } });
+  ok((await geocodeSite(A.tenantId, site.id)) === "ok" && fake.calls.length === 2 && (await prisma.site.findUniqueOrThrow({ where: { id: site.id } })).longitude === 10.01, "geänderte Adresse → neu verortet");
+  await prisma.site.update({ where: { id: site.id }, data: { city: "Nirgendwo", postalCode: "99999" } });
+  ok((await geocodeSite(A.tenantId, site.id)) === "not_found" && fake.calls.length === 3, "unbekannte Adresse → not_found");
+  const s2 = await prisma.site.findUniqueOrThrow({ where: { id: site.id } });
+  ok(s2.geocodeStatus === "not_found" && s2.latitude === null && s2.longitude === null, "not_found entfernt veraltete automatische Koordinaten");
+  ok((await geocodeSite(A.tenantId, site.id)) === "cached" && fake.calls.length === 3, "not_found wird für dieselbe Adresse nicht wiederholt");
+
+  const failing = fakeProvider(() => "throw");
+  const siteFail = await prisma.site.create({ data: { tenantId: A.tenantId, customerId: A.customerId, name: "Geo Fehler", ...addr } });
+  ok((await geocodeSite(A.tenantId, siteFail.id, { provider: failing.provider })) === "failed" && (await prisma.site.findUniqueOrThrow({ where: { id: siteFail.id } })).geocodeStatus === "failed", "Providerfehler → Status failed");
+  ok((await geocodeSite(A.tenantId, siteFail.id)) === "ok", "failed wird beim nächsten Lauf erneut versucht");
+
+  const manual = await prisma.site.create({ data: { tenantId: A.tenantId, customerId: A.customerId, name: "Geo manuell", ...addr, latitude: 50.1, longitude: 8.6 } });
+  const callsBefore = fake.calls.length;
+  ok((await geocodeSite(A.tenantId, manual.id)) === "manual" && fake.calls.length === callsBefore, "manuelle Koordinaten → kein Aufruf");
+  const m = await prisma.site.findUniqueOrThrow({ where: { id: manual.id } });
+  ok(m.latitude === 50.1 && m.longitude === 8.6 && m.geocodeStatus === "skipped", "manuelle Koordinaten bleiben unverändert (Status skipped)");
+
+  const none = await prisma.site.create({ data: { tenantId: A.tenantId, customerId: A.customerId, name: "Geo none", ...addr } });
+  ok((await geocodeSite(A.tenantId, none.id, { provider: null })) === "skipped" && (await prisma.site.findUniqueOrThrow({ where: { id: none.id } })).latitude === null, "Provider none → skipped, ohne Ortsangabe, kein Fehler");
+  const noAddr = await prisma.site.create({ data: { tenantId: A.tenantId, customerId: A.customerId, name: "Geo ohne Adresse", street: "Irgendwo" } });
+  ok((await geocodeSite(A.tenantId, noAddr.id)) === "skipped" && fake.calls.length === callsBefore, "unvollständige Adresse → skipped ohne Aufruf");
+
+  const bCalls = fake.calls.length;
+  ok((await geocodeSite(B.tenantId, none.id)) === "missing" && fake.calls.length === bCalls, "Mandant B: Objekt von A nicht gefunden, kein Aufruf");
+  ok((await prisma.site.findUniqueOrThrow({ where: { id: none.id } })).geocodeStatus === "skipped", "Objekt von A unverändert");
+
+  section("Processor & Hook");
+  ok(typeof PROCESSORS["geocode-site"] === "function", "Processor geocode-site registriert");
+  const viaJob = await prisma.site.create({ data: { tenantId: A.tenantId, customerId: A.customerId, name: "Geo Job", ...addr } });
+  await geocodeProcessor({ tenantId: A.tenantId, entityId: viaJob.id });
+  ok((await prisma.site.findUniqueOrThrow({ where: { id: viaJob.id } })).geocodeStatus === "ok", "Processor verortet das Objekt");
+  setGeocodingProvider(failing.provider);
+  const viaJobFail = await prisma.site.create({ data: { tenantId: A.tenantId, customerId: A.customerId, name: "Geo Job Fehler", ...addr } });
+  let jobThrew = false;
+  try {
+    await geocodeProcessor({ tenantId: A.tenantId, entityId: viaJobFail.id });
+  } catch {
+    jobThrew = true;
+  }
+  ok(jobThrew, "Processor wirft bei failed → BullMQ wiederholt");
+  setGeocodingProvider(fake.provider);
+
+  const prev = process.env.GEOCODING_PROVIDER;
+  process.env.GEOCODING_PROVIDER = "none";
+  ok((await requestSiteGeocoding(A.tenantId, viaJob.id)) === false, "GEOCODING_PROVIDER=none → kein Job");
+  process.env.GEOCODING_PROVIDER = "nominatim";
+  const hookCalls = fake.calls.length;
+  const created = await createSite(A.ctx.backoffice, { customerId: A.customerId, name: "Geo Hook", street: "Am Kaiserkai", houseNumber: "1", postalCode: "20457", city: "Hamburg" });
+  await new Promise((resolve) => setTimeout(resolve, 100));
+  ok(!!created.id && fake.calls.length === hookCalls, "Anlage eines Objekts: Verortung nur per Queue, nie inline im Request");
+  if (prev === undefined) delete process.env.GEOCODING_PROVIDER;
+  else process.env.GEOCODING_PROVIDER = prev;
+  setGeocodingProvider(undefined);
+
+  ok(nominatimHits === 0, "Nominatim wurde in keinem Test aufgerufen");
+});
diff --git a/src/server/jobs/processors/geocode-site.ts b/src/server/jobs/processors/geocode-site.ts
new file mode 100644
index 0000000..a114c33
--- /dev/null
+++ b/src/server/jobs/processors/geocode-site.ts
@@ -0,0 +1,12 @@
+import { geocodeSite } from "@/server/services/geo/geocode-site";
+import type { JobPayload } from "../queues";
+
+/**
+ * Queue "geocode-site" (L13 Planung): address → coordinates for one site, cached on the row.
+ * The worker runs this queue with concurrency 1 + BullMQ limiter 1/s; the Nominatim provider
+ * additionally throttles process-wide. `failed` is rethrown so BullMQ retries with backoff.
+ */
+export async function process(payload: JobPayload): Promise<void> {
+  const outcome = await geocodeSite(payload.tenantId, payload.entityId);
+  if (outcome === "failed") throw new Error("geocoding failed (retry scheduled)");
+}
diff --git a/src/server/services/geo/config.ts b/src/server/services/geo/config.ts
new file mode 100644
index 0000000..f5031d0
--- /dev/null
+++ b/src/server/services/geo/config.ts
@@ -0,0 +1,42 @@
+import packageJson from "../../../../package.json";
+
+/**
+ * Geocoding + map configuration (L13 Planung). Defaults follow the OpenStreetMap usage policies:
+ * Nominatim only server side, max. 1 request/s, identifying User-Agent, results cached per site.
+ * For production with more than a handful of addresses a self-hosted / contracted geocoding and
+ * tile service is recommended (see docs/craftvia/lanes/planung.md).
+ */
+
+export const GEOCODING_PROVIDERS = ["nominatim", "none"] as const;
+export type GeocodingProviderName = (typeof GEOCODING_PROVIDERS)[number];
+
+export const DEFAULT_NOMINATIM_URL = "https://nominatim.openstreetmap.org";
+export const DEFAULT_MAP_TILE_URL = "https://tile.openstreetmap.org/{z}/{x}/{y}.png";
+export const DEFAULT_MAP_ATTRIBUTION = "© OpenStreetMap-Mitwirkende";
+
+type Env = Record<string, string | undefined>;
+const val = (v: string | undefined) => (v && v.trim() ? v.trim() : undefined);
+
+export function geocodingProviderName(env: Env = process.env): GeocodingProviderName {
+  const v = val(env.GEOCODING_PROVIDER)?.toLowerCase();
+  return v === "none" ? "none" : "nominatim";
+}
+
+export function geocodingConfig(env: Env = process.env) {
+  const baseUrl = val(env.APP_BASE_URL) ?? val(env.AUTH_URL) ?? "http://localhost:3000";
+  return {
+    provider: geocodingProviderName(env),
+    url: (val(env.GEOCODING_URL) ?? DEFAULT_NOMINATIM_URL).replace(/\/+$/, ""),
+    userAgent: val(env.GEOCODING_USER_AGENT) ?? `Craftvia/${packageJson.version} (+${baseUrl})`,
+    timeoutMs: 8_000,
+    minIntervalMs: 1_000,
+  };
+}
+
+/** Tile URL + attribution for the live map (passed from server pages to the client). */
+export function mapConfig(env: Env = process.env) {
+  return {
+    tileUrl: val(env.MAP_TILE_URL) ?? DEFAULT_MAP_TILE_URL,
+    attribution: val(env.MAP_ATTRIBUTION) ?? DEFAULT_MAP_ATTRIBUTION,
+  };
+}
diff --git a/src/server/services/geo/dispatch.ts b/src/server/services/geo/dispatch.ts
new file mode 100644
index 0000000..642885f
--- /dev/null
+++ b/src/server/services/geo/dispatch.ts
@@ -0,0 +1,24 @@
+import { enqueueJob } from "@/server/jobs/queues";
+import { geocodingProviderName } from "@/server/services/geo/config";
+
+/**
+ * Ask the worker to geocode a site (after create / address change / import confirmation).
+ * Never runs inline: no external request inside a user request (OSM policy: no bulk geocoding in
+ * requests). If the queue is not reachable yet (lazy Redis connection) one delayed retry is made;
+ * otherwise the site stays without coordinates ("ohne Ortsangabe") until the next change or
+ * `scripts/geocode-backfill.ts`. Never throws.
+ */
+export async function requestSiteGeocoding(tenantId: string, siteId: string): Promise<boolean> {
+  if (geocodingProviderName() === "none") return false;
+  const payload = { tenantId, entityId: siteId };
+  try {
+    if (await enqueueJob("geocode-site", payload)) return true;
+  } catch (err) {
+    console.error("[geo] enqueue geocode-site failed:", (err as Error).message);
+  }
+  const timer = setTimeout(() => {
+    enqueueJob("geocode-site", payload).catch(() => undefined);
+  }, 1_500);
+  timer.unref?.();
+  return false;
+}
diff --git a/src/server/services/geo/geocode-site.ts b/src/server/services/geo/geocode-site.ts
new file mode 100644
index 0000000..b088e26
--- /dev/null
+++ b/src/server/services/geo/geocode-site.ts
@@ -0,0 +1,92 @@
+import { isValidLatLng } from "@/lib/geo/distance";
+import { writeAuditLog } from "@/server/audit";
+import { dbForTenant } from "@/server/db";
+import { geocodeQueryFor } from "@/server/services/geo/normalize";
+import { getGeocodingProvider, type GeocodingProvider } from "@/server/services/geo/provider";
+
+/**
+ * Geocode one site and cache the result on the row (job `geocode-site`, backfill script).
+ *
+ * Rules:
+ * - Manually entered coordinates (coordinates without `geocodedAt`) are never overwritten.
+ * - Unchanged address (`geocodeQuery`) with status ok/not_found → no provider call ("cached").
+ * - No usable address or provider `none` → status `skipped` (retried once enabled/complete).
+ * - Transport/HTTP error → status `failed` (the job rethrows so BullMQ retries).
+ * - Address changed and not found → previous automatic coordinates are removed (they would be wrong).
+ */
+
+export type GeocodeOutcome = "ok" | "not_found" | "failed" | "skipped" | "cached" | "manual" | "missing";
+
+const SITE_SELECT = {
+  id: true,
+  street: true,
+  houseNumber: true,
+  postalCode: true,
+  city: true,
+  country: true,
+  latitude: true,
+  longitude: true,
+  geocodedAt: true,
+  geocodeStatus: true,
+  geocodeQuery: true,
+} as const;
+
+export async function geocodeSite(
+  tenantId: string,
+  siteId: string,
+  opts: { provider?: GeocodingProvider | null; now?: Date } = {},
+): Promise<GeocodeOutcome> {
+  const db = dbForTenant(tenantId);
+  const site = await db.site.findFirst({ where: { id: siteId, deletedAt: null }, select: SITE_SELECT });
+  if (!site) return "missing";
+  const now = opts.now ?? new Date();
+  const query = geocodeQueryFor(site);
+
+  if (isValidLatLng(site) && !site.geocodedAt) {
+    if (site.geocodeStatus !== "skipped" || site.geocodeQuery !== query) {
+      await db.site.update({ where: { id: site.id }, data: { geocodeStatus: "skipped", geocodeQuery: query } });
+    }
+    return "manual";
+  }
+
+  if (!query) {
+    const clearAuto = site.geocodedAt !== null && (site.latitude !== null || site.longitude !== null);
+    await db.site.update({
+      where: { id: site.id },
+      data: { geocodeStatus: "skipped", geocodeQuery: null, ...(clearAuto ? { latitude: null, longitude: null } : {}) },
+    });
+    return "skipped";
+  }
+
+  if (site.geocodeQuery === query && (site.geocodeStatus === "ok" || site.geocodeStatus === "not_found")) return "cached";
+
+  const provider = opts.provider === undefined ? await getGeocodingProvider() : opts.provider;
+  if (!provider) {
+    if (site.geocodeStatus !== "skipped") await db.site.update({ where: { id: site.id }, data: { geocodeStatus: "skipped" } });
+    return "skipped";
+  }
+
+  let result;
+  try {
+    result = await provider.geocode({ street: site.street, houseNumber: site.houseNumber, postalCode: site.postalCode, city: site.city, country: site.country });
+  } catch (err) {
+    console.error(`[geo] geocoding site ${site.id} failed:`, (err as Error).message);
+    await db.site.update({ where: { id: site.id }, data: { geocodeStatus: "failed", geocodeQuery: query, geocodedAt: now } });
+    return "failed";
+  }
+
+  const before = { latitude: site.latitude, longitude: site.longitude, geocodeStatus: site.geocodeStatus };
+  const coords = result.status === "ok" ? { latitude: result.latitude, longitude: result.longitude } : { latitude: null, longitude: null };
+  await db.site.update({ where: { id: site.id }, data: { ...coords, geocodeStatus: result.status, geocodeQuery: query, geocodedAt: now } });
+  if (before.latitude !== coords.latitude || before.longitude !== coords.longitude) {
+    await writeAuditLog({
+      tenantId,
+      action: "update",
+      entity: "site",
+      entityId: site.id,
+      before,
+      after: { ...coords, geocodeStatus: result.status, source: "geocoding", provider: provider.name },
+    });
+  }
+  return result.status;
+}
diff --git a/src/server/services/geo/nominatim.ts b/src/server/services/geo/nominatim.ts
new file mode 100644
index 0000000..d1f3070
--- /dev/null
+++ b/src/server/services/geo/nominatim.ts
@@ -0,0 +1,58 @@
+import { GeocodingError, type GeocodeAddress, type GeocodeResult, type GeocodingProvider } from "@/server/services/geo/provider";
+import { nominatimLimiter } from "@/server/services/geo/rate-limit";
+
+/**
+ * Nominatim (OpenStreetMap) provider. Usage policy: server side only, max. 1 request/s process-wide,
+ * identifying User-Agent, results are cached in Site.latitude/longitude by the caller, no bulk
+ * geocoding inside requests (only the geocode-site job and scripts/geocode-backfill.ts call this).
+ */
+
+type Config = { url: string; userAgent: string; timeoutMs: number };
+type Deps = { fetch: typeof fetch; limiter: { acquire(): Promise<number> } };
+
+/** Structured search URL (no free text → fewer ambiguous hits). */
+export function buildNominatimUrl(baseUrl: string, address: GeocodeAddress): URL {
+  const url = new URL(`${baseUrl.replace(/\/+$/, "")}/search`);
+  url.searchParams.set("format", "jsonv2");
+  url.searchParams.set("limit", "1");
+  url.searchParams.set("addressdetails", "0");
+  const street = [address.houseNumber, address.street].map((s) => s?.trim()).filter(Boolean).join(" ");
+  if (street) url.searchParams.set("street", street);
+  if (address.postalCode?.trim()) url.searchParams.set("postalcode", address.postalCode.trim());
+  if (address.city?.trim()) url.searchParams.set("city", address.city.trim());
+  const country = (address.country ?? "DE").trim().toLowerCase();
+  if (/^[a-z]{2}$/.test(country)) url.searchParams.set("countrycodes", country);
+  return url;
+}
+
+export function createNominatimProvider(config: Config, deps: Deps = { fetch: globalThis.fetch, limiter: nominatimLimiter }): GeocodingProvider {
+  return {
+    name: "nominatim",
+    async geocode(address: GeocodeAddress): Promise<GeocodeResult> {
+      await deps.limiter.acquire();
+      let res: Response;
+      try {
+        res = await deps.fetch(buildNominatimUrl(config.url, address), {
+          headers: { "User-Agent": config.userAgent, "Accept-Language": "de", Accept: "application/json" },
+          signal: AbortSignal.timeout(config.timeoutMs),
+        });
+      } catch (err) {
+        throw new GeocodingError(`request failed: ${(err as Error).name}`);
+      }
+      if (!res.ok) throw new GeocodingError(`http ${res.status}`);
+      let body: unknown;
+      try {
+        body = await res.json();
+      } catch {
+        throw new GeocodingError("invalid response");
+      }
+      const hit = Array.isArray(body) ? (body[0] as { lat?: unknown; lon?: unknown } | undefined) : undefined;
+      const latitude = Number(hit?.lat);
+      const longitude = Number(hit?.lon);
+      if (!hit || !Number.isFinite(latitude) || !Number.isFinite(longitude) || Math.abs(latitude) > 90 || Math.abs(longitude) > 180) {
+        return { status: "not_found" };
+      }
+      return { status: "ok", latitude, longitude };
+    },
+  };
+}
diff --git a/src/server/services/geo/normalize.ts b/src/server/services/geo/normalize.ts
new file mode 100644
index 0000000..0081fef
--- /dev/null
+++ b/src/server/services/geo/normalize.ts
@@ -0,0 +1,27 @@
+/**
+ * Normalized address string of a site ("hafenstraße 12|20457|hamburg|de"). Stored in
+ * Site.geocodeQuery next to the coordinates: an unchanged address is never geocoded twice.
+ * Returns null when the address is too incomplete to geocode (neither postal code nor city).
+ */
+export type SiteAddress = {
+  street?: string | null;
+  houseNumber?: string | null;
+  postalCode?: string | null;
+  city?: string | null;
+  country?: string | null;
+};
+
+const clean = (v: string | null | undefined) => (v ?? "").normalize("NFC").trim().replace(/\s+/g, " ").toLowerCase();
+
+export function geocodeQueryFor(site: SiteAddress): string | null {
+  const postal = clean(site.postalCode);
+  const city = clean(site.city);
+  if (!postal && !city) return null;
+  const street = [clean(site.street), clean(site.houseNumber)].filter(Boolean).join(" ");
+  return [street, postal, city, clean(site.country) || "de"].join("|");
+}
+
+/** True when the geocoding-relevant part of the address changed. */
+export function addressChanged(before: SiteAddress, after: SiteAddress): boolean {
+  return geocodeQueryFor(before) !== geocodeQueryFor(after);
+}
diff --git a/src/server/services/geo/provider.ts b/src/server/services/geo/provider.ts
new file mode 100644
index 0000000..ebe95fa
--- /dev/null
+++ b/src/server/services/geo/provider.ts
@@ -0,0 +1,41 @@
+import { geocodingConfig, geocodingProviderName } from "@/server/services/geo/config";
+
+/** Provider-neutral geocoding contract (L13 Planung) — swap Nominatim for another service via env. */
+
+export type GeocodeAddress = {
+  street: string | null;
+  houseNumber: string | null;
+  postalCode: string | null;
+  city: string | null;
+  country: string | null;
+};
+
+export type GeocodeResult = { status: "ok"; latitude: number; longitude: number } | { status: "not_found" };
+
+export interface GeocodingProvider {
+  readonly name: string;
+  /** Resolves ok/not_found; throws GeocodingError for transport/HTTP failures (retryable). */
+  geocode(address: GeocodeAddress): Promise<GeocodeResult>;
+}
+
+export class GeocodingError extends Error {
+  constructor(message: string) {
+    super(message);
+    this.name = "GeocodingError";
+  }
+}
+
+let override: GeocodingProvider | null | undefined;
+
+/** Tests inject a fake provider (never Nominatim); `undefined` restores the env-based provider. */
+export function setGeocodingProvider(provider: GeocodingProvider | null | undefined): void {
+  override = provider;
+}
+
+/** Configured provider, or null when geocoding is disabled (`GEOCODING_PROVIDER=none`). */
+export async function getGeocodingProvider(): Promise<GeocodingProvider | null> {
+  if (override !== undefined) return override;
+  if (geocodingProviderName() === "none") return null;
+  const { createNominatimProvider } = await import("@/server/services/geo/nominatim");
+  return createNominatimProvider(geocodingConfig());
+}
diff --git a/src/server/services/geo/rate-limit.ts b/src/server/services/geo/rate-limit.ts
new file mode 100644
index 0000000..e857ba8
--- /dev/null
+++ b/src/server/services/geo/rate-limit.ts
@@ -0,0 +1,24 @@
+/**
+ * Minimum-interval limiter: callers are released one after another with at least `intervalMs`
+ * between two slots (Nominatim policy: max. 1 request per second). Clock is injectable for tests.
+ */
+export type Clock = { now: () => number; sleep: (ms: number) => Promise<void> };
+
+const realClock: Clock = { now: () => Date.now(), sleep: (ms) => new Promise((resolve) => setTimeout(resolve, ms)) };
+
+export function createIntervalLimiter(intervalMs: number, clock: Clock = realClock) {
+  let next = 0;
+  return {
+    /** Waits for the next free slot and returns its timestamp. */
+    async acquire(): Promise<number> {
+      const now = clock.now();
+      const slot = Math.max(now, next);
+      next = slot + intervalMs;
+      if (slot > now) await clock.sleep(slot - now);
+      return slot;
+    },
+  };
+}
+
+/** Process-wide limiter for all Nominatim requests of this process (worker, backfill script). */
+export const nominatimLimiter = createIntervalLimiter(1_000);
diff --git a/src/server/services/imports/confirm.ts b/src/server/services/imports/confirm.ts
index 9104cd2..0ffab91 100644
--- a/src/server/services/imports/confirm.ts
+++ b/src/server/services/imports/confirm.ts
@@ -8,6 +8,7 @@ import { computeCorrections, reviewFormSchema, type ReviewForm } from "@/lib/imp
 import { createWorkOrder } from "@/server/services/work-orders/create";
 import { startExtraction, type Dispatch } from "./upload";
 import { dispatchJob } from "@/server/jobs/dispatch";
+import { requestSiteGeocoding } from "@/server/services/geo/dispatch";
 
 export type ConfirmResult = { workOrderId: string; workOrderNumber: string; customerId: string; siteId: string | null; contactId: string | null };
 
@@ -168,6 +169,7 @@ export async function confirmImport(ctx: ServiceCtx, importId: string, rawForm:
   if (result.createdCustomer) await writeAuditLog({ ...base, action: "create", entity: "customer", entityId: result.customerId, after: { source: "import", importId: job.id } });
   if (result.contactId) await writeAuditLog({ ...base, action: "create", entity: "contact", entityId: result.contactId, after: { customerId: result.customerId, source: "import" } });
   if (result.createdSite && result.siteId) await writeAuditLog({ ...base, action: "create", entity: "site", entityId: result.siteId, after: { customerId: result.customerId, source: "import" } });
+  if (result.createdSite && result.siteId) void requestSiteGeocoding(ctx.tenantId, result.siteId); // L13 Planung: queued geocoding of the new site
   // work order creation is audited by services/work-orders/create (entity work_order)
   await writeAuditLog({
     ...base,
diff --git a/src/server/services/sites/sites.ts b/src/server/services/sites/sites.ts
index c0380d4..dc1ebb0 100644
--- a/src/server/services/sites/sites.ts
+++ b/src/server/services/sites/sites.ts
@@ -4,6 +4,8 @@ import { writeAuditLog } from "@/server/audit";
 import { assertCan, ServiceError, type ServiceCtx } from "@/server/services/context";
 import { siteScope } from "@/server/services/work-orders/visibility";
 import { optStr } from "@/server/services/customers/schemas";
+import { requestSiteGeocoding } from "@/server/services/geo/dispatch";
+import { addressChanged } from "@/server/services/geo/normalize";
 
 export const SITE_STATUSES = ["active", "inactive", "provisional"] as const;
 
@@ -121,6 +123,7 @@ export async function createSite(ctx: ServiceCtx, input: SiteCreateInput) {
   await assertCustomerAndContact(ctx, data.customerId, data.contactId);
   const site = await ctx.db.site.create({ data: { ...data, tenantId: ctx.tenantId, country: data.country ?? "DE" } });
   await writeAuditLog({ tenantId: ctx.tenantId, actorId: ctx.userId, action: "create", entity: "site", entityId: site.id, after: site });
+  void requestSiteGeocoding(ctx.tenantId, site.id); // L13 Planung: queued, never inline
   return site;
 }
 
@@ -134,6 +137,7 @@ export async function updateSite(ctx: ServiceCtx, id: string, patch: SitePatchIn
   await assertCustomerAndContact(ctx, customerId, contactId);
   const after = await ctx.db.site.update({ where: { id }, data: { ...data, contactId } });
   await writeAuditLog({ tenantId: ctx.tenantId, actorId: ctx.userId, action: "update", entity: "site", entityId: id, before, after });
+  if (addressChanged(before, after)) void requestSiteGeocoding(ctx.tenantId, id); // L13 Planung
   return after;
 }