diff --git a/tradein-mvp/backend/app/services/estimator.py b/tradein-mvp/backend/app/services/estimator.py
index 4e2fc03e..580593d0 100644
--- a/tradein-mvp/backend/app/services/estimator.py
+++ b/tradein-mvp/backend/app/services/estimator.py
@@ -881,13 +881,13 @@ def _fetch_analogs(
                         -- без типа → PostgreSQL "could not determine data type of parameter"
                         -- (AmbiguousParameter). Явный тип снимает неоднозначность.
                         + CASE
-                            WHEN :target_year IS NOT NULL
+                            WHEN CAST(:target_year AS integer) IS NOT NULL
                                  AND year_built IS NOT NULL
                             THEN abs(year_built - CAST(:target_year AS integer)) / 12.0
                             ELSE 0
                           END
                         + CASE
-                            WHEN :target_house_type IS NOT NULL
+                            WHEN CAST(:target_house_type AS text) IS NOT NULL
                                  AND house_type IS NOT NULL
                                  AND house_type <> CAST(:target_house_type AS text)
                             THEN 1.5
@@ -900,13 +900,13 @@ def _fetch_analogs(
                             ST_Distance(geom::geography, ST_MakePoint(:lon, :lat)::geography)
                                 / 1000.0
                             + CASE
-                                WHEN :target_year IS NOT NULL
+                                WHEN CAST(:target_year AS integer) IS NOT NULL
                                      AND year_built IS NOT NULL
                                 THEN abs(year_built - CAST(:target_year AS integer)) / 12.0
                                 ELSE 0
                               END
                             + CASE
-                                WHEN :target_house_type IS NOT NULL
+                                WHEN CAST(:target_house_type AS text) IS NOT NULL
                                      AND house_type IS NOT NULL
                                      AND house_type <> CAST(:target_house_type AS text)
                                 THEN 1.5