diff --git a/tradein-mvp/backend/app/services/dadata.py b/tradein-mvp/backend/app/services/dadata.py
index 4e7da7c5..a14626e5 100644
--- a/tradein-mvp/backend/app/services/dadata.py
+++ b/tradein-mvp/backend/app/services/dadata.py
@@ -167,10 +167,27 @@ async def clean_address(address: str) -> DadataAddressResult | None:
         logger.warning("dadata: HTTP 429 — quota exceeded (100/день demo limit?)")
         return None
     if status in (401, 403):
-        logger.error(
-            "dadata: HTTP %d — auth/secret rejected. Проверь DADATA_API_TOKEN/SECRET.",
-            status,
-        )
+        body_preview = (response.text or "")[:200]
+        # 403 «Feature 'CLEAN' disabled for token …» ≠ отклонённый токен: токен валиден,
+        # но услуга «Стандартизация» (CLEAN) не подключена на аккаунте. Refresh токена НЕ
+        # поможет — нужно включить услугу в кабинете DaData ИЛИ полагаться на suggest-fallback
+        # (enrich_address). Разделяем сообщения, чтобы не гонять зря за ротацией токена.
+        if status == 403 and (
+            "disabled" in body_preview.lower() or "feature" in body_preview.lower()
+        ):
+            logger.error(
+                "dadata: HTTP 403 — услуга CLEAN (Стандартизация) выключена на аккаунте "
+                "(токен валиден, НЕ отклонён). Включи услугу в кабинете DaData или "
+                "полагайся на suggest-fallback (enrich_address). Ответ: %r",
+                body_preview,
+            )
+        else:
+            logger.error(
+                "dadata: HTTP %d — auth/secret rejected. "
+                "Проверь DADATA_API_TOKEN/SECRET. Ответ: %r",
+                status,
+                body_preview,
+            )
         return None
     if status >= 500:
         logger.warning("dadata: HTTP %d — transient server error", status)
@@ -246,6 +263,12 @@ class DadataSuggestion:
     street: str | None
     city: str | None
     kind: str
+    # #dadata-403 — доп. поля для suggest-fallback в enrich_address (когда CLEAN
+    # выключен на аккаунте). house_fias_id — ФИАС ДОМА (для house-level == fias_id);
+    # kladr_id / qc_geo дублируют то, что отдаёт /clean, чтобы деградация была равноценной.
+    house_fias_id: str | None = None
+    kladr_id: str | None = None
+    qc_geo: int | None = None
 
 
 def _classify_kind(fias_level: Any) -> str:
@@ -295,6 +318,9 @@ def _parse_suggestion(item: dict[str, Any]) -> DadataSuggestion | None:
         street=data.get("street"),
         city=data.get("city"),
         kind=_classify_kind(data.get("fias_level")),
+        house_fias_id=data.get("house_fias_id"),
+        kladr_id=data.get("kladr_id"),
+        qc_geo=_coerce_int(data.get("qc_geo")),
     )
 
 
@@ -401,3 +427,55 @@ async def suggest_addresses(
 
     logger.info("dadata suggest: %r → %d вариантов", query[:60], len(out))
     return out
+
+
+# ── Enrichment orchestrator (clean → suggest fallback) ───────────────────────
+
+
+async def enrich_address(address: str) -> DadataAddressResult | None:
+    """Обогащение целевого адреса с graceful-деградацией CLEAN → SUGGEST.
+
+    Порядок:
+      1. /clean/address (token+secret) — canonical + house_cadnum + house_fias_id +
+         qc_geo + metro. Если вернул результат — используем его.
+      2. Fallback: /suggest/address (token-only, доступен на free-tier 10k/день) —
+         берём top house-level кандидата. Даёт house_fias_id + гео + kladr_id + qc_geo,
+         но НЕ canonical_address / house_cadnum (их умеет только CLEAN) → они остаются
+         None. Честная деградация: недостающие поля не выдумываем.
+
+    Мотивация (#dadata-403, vault Mera_Hard_Audit_0712): на проде у аккаунта услуга
+    CLEAN выключена (HTTP 403 «Feature CLEAN disabled»), из-за чего house_fias_id —
+    ключ join с houses/ДОМ.РФ (year_built и пр.) — терялся, хотя /suggest его отдаёт
+    бесплатно. Город НЕ ограничиваем (city="") — enrichment работает по всей обл. (66).
+    """
+    cleaned = await clean_address(address)
+    if cleaned is not None:
+        return cleaned
+
+    suggestions = await suggest_addresses(address, limit=5, city="")
+    for s in suggestions:
+        fias = s.house_fias_id or s.fias_id
+        if s.kind == "house" and fias:
+            # house-level ФИАС → гео дома точное; qc_geo из ответа либо 0 (exact) по умолчанию.
+            qc_geo = s.qc_geo if s.qc_geo is not None else 0
+            logger.info(
+                "dadata: CLEAN недоступен → suggest-fallback %r → house_fias_id=%s "
+                "(canonical/cadnum недоступны без CLEAN)",
+                address[:60],
+                fias,
+            )
+            return DadataAddressResult(
+                canonical_address=None,
+                house_cadnum=None,
+                house_fias_id=fias,
+                lat=s.lat,
+                lon=s.lon,
+                qc_geo=qc_geo,
+                qc_house=None,
+                kladr_id=s.kladr_id,
+                okato=None,
+                oktmo=None,
+                metro=[],
+                raw={"_source": "suggest_fallback", "value": s.value},
+            )
+    return None
diff --git a/tradein-mvp/backend/app/services/estimator.py b/tradein-mvp/backend/app/services/estimator.py
index a81b18fa..3a29a137 100644
--- a/tradein-mvp/backend/app/services/estimator.py
+++ b/tradein-mvp/backend/app/services/estimator.py
@@ -64,7 +64,11 @@ from app.schemas.trade_in import (
     TradeInEstimateInput,
 )
 from app.services.dadata import DadataAddressResult
-from app.services.dadata import clean_address as dadata_clean_address
+
+# enrich_address = /clean с graceful fallback на /suggest (#dadata-403: на проде услуга
+# CLEAN выключена → house_fias_id/гео берём из token-only /suggest). Локальный алиас
+# оставлен как dadata_clean_address — это точка патча в 11 тестах (без churn).
+from app.services.dadata import enrich_address as dadata_clean_address
 from app.services.geocoder import GeocodeResult, geocode
 from app.services.house_metadata import get_house_metadata
 from app.services.matching.houses import match_house_readonly, match_or_create_house
diff --git a/tradein-mvp/backend/tests/services/test_dadata.py b/tradein-mvp/backend/tests/services/test_dadata.py
index 5cb7489e..4b9a7464 100644
--- a/tradein-mvp/backend/tests/services/test_dadata.py
+++ b/tradein-mvp/backend/tests/services/test_dadata.py
@@ -720,3 +720,168 @@ async def test_suggest_addresses_clamps_limit() -> None:
     body = captured["body"]
     assert isinstance(body, dict)
     assert body["count"] == 20  # clamped to max
+
+
+# ─────────────────────────────────────────────────────────────────────────────
+# #dadata-403 — clean feature-disabled log + enrich_address (clean → suggest fallback)
+# ─────────────────────────────────────────────────────────────────────────────
+
+
+import logging as _logging  # noqa: E402
+
+# Real prod 403 body when услуга CLEAN не подключена (не отклонённый токен).
+CLEAN_FEATURE_DISABLED_BODY = {
+    "timestamp": "2026-07-12T16:37:54.585+00:00",
+    "status": 403,
+    "error": "Forbidden",
+    "message": (
+        "Feature 'CLEAN' disabled for token 'xxx'. "
+        "See https://dadata.userecho.com/topics/7784 for help."
+    ),
+    "path": "/api/v1/clean/address",
+}
+
+# House-level suggest candidate carrying house_fias_id/kladr_id/qc_geo (что нужно fallback'у).
+SUGGEST_HOUSE_PAYLOAD = {
+    "suggestions": [
+        {
+            "value": "г Екатеринбург, ул Малышева, д 4",
+            "unrestricted_value": "620014, Свердловская обл, г Екатеринбург, ул Малышева, д 4",
+            "data": {
+                "geo_lat": "56.831463",
+                "geo_lon": "60.580943",
+                "fias_id": "bfa7153e-fc05-40a4-a86d-779e65faaade",
+                "house_fias_id": "bfa7153e-fc05-40a4-a86d-779e65faaade",
+                "kladr_id": "6600000100006480017",
+                "qc_geo": "0",
+                "fias_level": "8",
+                "house": "4",
+                "street": "Малышева",
+                "city": "Екатеринбург",
+            },
+        }
+    ]
+}
+
+
+def _mock_enrich_transport(
+    clean_status: int, clean_body: object, suggest_body: object
+) -> httpx.MockTransport:
+    """Routes /clean vs /suggest by URL — enrich_address зовёт оба через один AsyncClient."""
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        url = str(request.url)
+        if "cleaner.dadata.ru" in url:
+            return httpx.Response(clean_status, json=clean_body)
+        if "suggestions.dadata.ru" in url:
+            return httpx.Response(200, json=suggest_body)
+        return httpx.Response(404, json={"error": "unexpected url"})
+
+    return httpx.MockTransport(handler)
+
+
+async def test_clean_address_logs_feature_disabled_distinctly(caplog) -> None:
+    """403 «Feature CLEAN disabled» → None + сообщение про выключенную услугу (не про токен)."""
+    from app.services import dadata
+
+    transport = _mock_transport_returning(403, CLEAN_FEATURE_DISABLED_BODY)
+    with _patch_settings(), _patch_async_client(transport):
+        with caplog.at_level(_logging.ERROR, logger="app.services.dadata"):
+            result = await dadata.clean_address("Екатеринбург, Малышева 4")
+
+    assert result is None
+    text = caplog.text
+    assert "Стандартизация" in text or "выключена" in text
+    # Не должны обвинять токен при feature-disabled.
+    assert "auth/secret rejected" not in text
+
+
+async def test_clean_address_logs_real_auth_rejection_as_auth(caplog) -> None:
+    """401 (или 403 без 'disabled') → сообщение про креды."""
+    from app.services import dadata
+
+    transport = _mock_transport_returning(401, {"message": "Unauthorized"})
+    with _patch_settings(), _patch_async_client(transport):
+        with caplog.at_level(_logging.ERROR, logger="app.services.dadata"):
+            result = await dadata.clean_address("Екатеринбург, Малышева 4")
+
+    assert result is None
+    assert "auth/secret rejected" in caplog.text
+
+
+async def test_suggest_addresses_captures_house_fias_kladr_qc() -> None:
+    """_parse_suggestion теперь тянет house_fias_id / kladr_id / qc_geo из data."""
+    from app.services import dadata
+
+    transport = _mock_suggest_transport(200, SUGGEST_HOUSE_PAYLOAD)
+    with _patch_settings(), _patch_async_client(transport):
+        results = await dadata.suggest_addresses("Малышева 4")
+
+    assert len(results) == 1
+    assert results[0].house_fias_id == "bfa7153e-fc05-40a4-a86d-779e65faaade"
+    assert results[0].kladr_id == "6600000100006480017"
+    assert results[0].qc_geo == 0
+
+
+async def test_enrich_address_uses_clean_when_available() -> None:
+    """CLEAN 200 → берём его результат (canonical/cadnum), suggest не подменяет."""
+    from app.services import dadata
+
+    transport = _mock_enrich_transport(200, SAMPLE_OK_PAYLOAD, {"suggestions": []})
+    with _patch_settings(), _patch_async_client(transport):
+        result = await dadata.enrich_address("Екатеринбург, ул. Малышева, 125")
+
+    assert result is not None
+    assert result.canonical_address == "г Екатеринбург, ул Малышева, д 125"
+    assert result.house_cadnum == "66:41:0704045:350"
+    assert result.raw.get("_source") != "suggest_fallback"
+
+
+async def test_enrich_address_falls_back_to_suggest_when_clean_unavailable() -> None:
+    """CLEAN 403 disabled → suggest-fallback даёт house_fias_id/гео; canonical/cadnum=None."""
+    from app.services import dadata
+
+    transport = _mock_enrich_transport(403, CLEAN_FEATURE_DISABLED_BODY, SUGGEST_HOUSE_PAYLOAD)
+    with _patch_settings(), _patch_async_client(transport):
+        result = await dadata.enrich_address("Екатеринбург, ул. Малышева, 4")
+
+    assert result is not None
+    assert result.house_fias_id == "bfa7153e-fc05-40a4-a86d-779e65faaade"
+    assert result.kladr_id == "6600000100006480017"
+    assert result.qc_geo == 0
+    assert result.lat is not None and abs(result.lat - 56.831463) < 1e-6
+    # Честная деградация: без CLEAN нет canonical/cadnum — не выдумываем.
+    assert result.canonical_address is None
+    assert result.house_cadnum is None
+    assert result.raw.get("_source") == "suggest_fallback"
+
+
+async def test_enrich_address_ignores_non_house_suggestions() -> None:
+    """Если suggest вернул только street/city (не house) → fallback не даёт house_fias_id → None."""
+    from app.services import dadata
+
+    street_only = {
+        "suggestions": [
+            {
+                "value": "г Екатеринбург, ул Малышева",
+                "unrestricted_value": "Свердловская обл, г Екатеринбург, ул Малышева",
+                "data": {"geo_lat": "56.83", "geo_lon": "60.58", "fias_id": "s", "fias_level": "7"},
+            }
+        ]
+    }
+    transport = _mock_enrich_transport(403, CLEAN_FEATURE_DISABLED_BODY, street_only)
+    with _patch_settings(), _patch_async_client(transport):
+        result = await dadata.enrich_address("Екатеринбург, ул. Малышева")
+
+    assert result is None
+
+
+async def test_enrich_address_returns_none_when_clean_and_suggest_both_fail() -> None:
+    """CLEAN недоступен + suggest пустой → None (graceful)."""
+    from app.services import dadata
+
+    transport = _mock_enrich_transport(403, CLEAN_FEATURE_DISABLED_BODY, {"suggestions": []})
+    with _patch_settings(), _patch_async_client(transport):
+        result = await dadata.enrich_address("Малышева 4")
+
+    assert result is None