server

server-rs/src/routes/properties.rs

@@ -123,7 +123,15 @@ fn insert_feature_value(
         return;
     }
 
-    let value = state.data.get_feature(row, feat_idx);
+    // `get_feature` decodes the lossy u16-quantized value, which turns round
+    // sale prices into noise (e.g. £428,000 → £427,984). For the last sale we
+    // keep an unquantized copy, so serve that instead to match the exact
+    // `historical_prices` entries and the price-history chart.
+    let value = if feature_names[feat_idx] == "Last known price" {
+        state.data.last_known_price_raw(row)
+    } else {
+        state.data.get_feature(row, feat_idx)
+    };
     if value.is_finite() {
         features.insert(feature_names[feat_idx].clone(), value);
     }