search_by_polygon
Find Polish real estate transactions from notarial deeds inside a custom GeoJSON polygon to analyze prices for a precise neighborhood or district boundary.
Instructions
Search real estate transactions within a geographic polygon. Returns TRANSACTIONS — deeds and prices — despite the name. For the land plots themselves inside a drawn shape, pass the same polygon to list_parcels_in_area. Provide a GeoJSON Polygon geometry to search within a custom area. Returns transactions found inside the polygon with coordinates. Use for precise neighborhood/osiedle boundaries. Can estimate coordinates from search_by_area results. For quick searches, start with search_by_area instead. Coordinates are [longitude, latitude]. First and last point must be identical. Permalink: every result is shareable on the map. From a result's "id:" line and its "Location: °N, °E" line, build https://cenogram.pl/ceny-transakcyjne?src=mcpstdio#v=1&lat=&lng=&z=16&tx= (drop the °N/°E; lat = the °N number, lng = the °E number) — opens that exact transaction on the map. Omit &tx= for the area only. Field provenance: values are from the notarial deed (RCN) by default; computed values (parcel area summed across plots or converted from hectares, an inferred/reclassified property type) and approximated streets are flagged inline with a neutral [...] note. Example: {"type":"Polygon","coordinates":[[[21.0,52.2],[21.01,52.2],[21.01,52.21],[21.0,52.21],[21.0,52.2]]]}
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| floor | No | Floor of the unit (piętro lokalu, residential). Multi-select buckets: exact integers incl. '0' (parter) and negatives e.g. '-1' (basement), 'Nplus' e.g. '10plus' = 10 or more, '0plus' = ground and above, 'unknown' = no floor recorded (NULL). E.g. ['0','1','2'] for ground-to-2nd floor. Building storeys are a different attribute. Without 'unknown', rows with no floor are excluded. | |
| limit | No | Max results (1-3000, default 100). MCP displays up to 50 transactions. | |
| rooms | No | Number of rooms (izby) filter, residential units only. Multi-select; '8plus' means 8 or more, 'unknown' = no room count recorded (NULL). E.g. ['2','3'] for 2-3 izby flats. Without 'unknown', rows with no room count are excluded. | |
| dateTo | No | End date (YYYY-MM-DD) | |
| street | No | Street name filter (partial match) | |
| landUse | No | Recorded land-use category of the transaction's land. Multi-select from: gruntyZabudowaneIZurbanizowane (built-up and urbanised), gruntyRolne (agricultural), gruntyLesne (forest), terenyKomunikacyjne (transport), inne (other). 'unknown' = no category recorded for the land (NULL) — a legitimate bucket, never a claim that the land has no use. Values are case-sensitive. E.g. ['gruntyRolne'] for farmland, or ['gruntyZabudowaneIZurbanizowane','gruntyRolne'] to compare developed vs farmland. | |
| maxArea | No | Maximum area in m² | |
| minArea | No | Minimum area in m² | |
| polygon | Yes | GeoJSON Polygon geometry. Coordinates: [longitude, latitude] pairs. First and last point must be identical. Max 500 vertices total. | |
| dateFrom | No | Start date (YYYY-MM-DD) | |
| district | No | District name filter | |
| maxPrice | No | Maximum price in PLN | |
| minPrice | No | Minimum price in PLN | |
| marketType | No | Market type filter | |
| buildingType | No | Building type filter (PKOB classification). 'unknown' = no type recorded (NULL); without it such rows are excluded (~39% of buildings have no type). | |
| propertyType | No | Property type filter | |
| unitFunction | No | Unit/apartment function filter. 'unknown' = no function recorded (NULL); without it such rows are excluded. Garages appear only when 'garage' is selected, not via 'unknown'. | |
| ownershipType | No | Ownership / legal-right type filter (rodzaj prawa do nieruchomości). land_ownership; perpetual_usufruct (użytkowanie wieczyste — covers both registry codes for this right); cooperative_ownership; unit_sale; ownership; unit_ownership_with_appurtenant_right; building_ownership_with_appurtenant_right. 'unknown' = no right recorded (NULL). Multi-select; e.g. ['land_ownership','perpetual_usufruct'] to compare ownership vs perpetual usufruct on undeveloped land. | |
| buildingStoreys | No | Number of above-ground storeys of the building. Multi-select buckets: exact non-negative integers (e.g. '1','2'), 'Nplus' e.g. '3plus' = 3 or more, 'unknown' = no storey count recorded (NULL). Recorded ONLY for single-building transactions, so 'unknown' covers BOTH a deed with several buildings (no single storey count exists) and a single building with missing data — never read it as 'a building with no storeys'. This is NOT the floor of a unit (see floor). Without 'unknown', rows with no storey count are excluded. | |
| mpzpDesignation | No | MPZP zoning designation filter (exact match). Use 'unknown' for rows with no designation recorded (NULL); distinct from the registry code 'brakMPZPLubWZ'. | |
| transactionType | No | Transaction type filter. For market analysis, ALWAYS specify to exclude non-market transactions. | |
| maxFootprintArea | No | Maximum building footprint (ground-plan) area in m², summed over all buildings of the transaction. Distinct from maxArea, which measures usable floor area (units) or land/parcel area. Set only where every linked building has footprint data, so this bound selects only measured rows — absence means 'not measured', not 'no building'. | |
| minFootprintArea | No | Minimum building footprint (ground-plan) area in m², summed over all buildings of the transaction. Distinct from minArea, which measures usable floor area (units) or land/parcel area. Set only where every linked building has footprint data, so this bound selects only measured rows — absence means 'not measured', not 'no building'. |