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Cenogram - Polish Real Estate Transactions (RCN)

Cenogram provides 8M+ Polish real estate transactions from the national price registry (Rejestr Cen Nieruchomosci / RCN) - prices recorded in notarial deeds, not asking prices from listings Nationwide coverage from 2003, refreshed roughly every two weeks. 20+ read-only tools: transaction search by location, radius or GeoJSON polygon, price statistics and distributions, location comparison, cadastral parcel resolution, and per-property context including flood and landslide hazard, heritage register, zoning, building permits and transit access Authentication is an API key or OAuth 2.1 with dynamic client registration

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接入信息

传输形态
http
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https://mcp-server--cenogram.run.tools
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{
  "mcpServers": {
    "Cenogram - Polish Real Estate Transactions (RCN)": {
      "url": "https://mcp-server--cenogram.run.tools"
    }
  }
}

能力清单

工具说明
search_transactionsSearch Polish real estate transactions from the national RCN registry (8M+ records). Returns transaction details: address, date, price, area, price/m², property type. Use list_locations first to find valid location names. Example: search for apartments in Mokotów sold in 2024 above 500,000 PLN. Data notes: marketType is NULL for ~55% of records (notary didn't classify) - filtering by marketType excludes them. ~1.7% of records have no transaction_date. Permalink: every result is shareable on the map. From a result's "id:" line and its "Location: <A>°N, <B>°E" line, build https://cenogram.pl/ceny-transakcyjne?src=mcphttp#v=1&lat=<A>&lng=<B>&z=16&tx=<id> (drop the °N/°E; lat = the °N number, lng = the °E number) — opens that exact transaction on the map. Omit &tx=<id> 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. Location matches TERYT districts only - for neighborhoods (osiedla), use search_by_area instead.
get_price_statisticsGet price per m² statistics by location for residential apartments in Poland. Note: only covers residential units (lokale mieszkalne). For other property types, use search_transactions. 'Warszawa'/'Kraków'/'Łódź' auto-expand to all sub-districts (Warszawa=19, Kraków=5, Łódź=6). Other names use partial match. Data quality: based on transaction prices from notarial deeds, not asking/listing prices. Coverage varies by county (some have data gaps of 5+ years). Note: median/average prices are market-based — fractional ownership shares and non-market deeds (public tenders, foreclosures, privileged/subsidized sales) are excluded from price aggregates. Transaction counts and coverage stay complete.
get_price_distributionGet price distribution histogram showing how many transactions fall into each price range. Useful for understanding the overall market price structure in Poland. Note: median/average prices are market-based — fractional ownership shares and non-market deeds (public tenders, foreclosures, privileged/subsidized sales) are excluded from price aggregates. Transaction counts and coverage stay complete.
search_by_areaSearch real estate transactions within a geographic radius. Best tool for neighborhood/osiedle searches (neighborhoods are not TERYT districts). Radius guide: 0.3-0.5 km for a street, 0.5-1 km for a neighborhood, 2-5 km for a city area. Example: apartments in Wrocław's Nowy Dwór (lat 51.143, lng 16.993, radiusKm=0.7). Area filters (minArea/maxArea) work for all propertyType values. Permalink: every result is shareable on the map. From a result's "id:" line and its "Location: <A>°N, <B>°E" line, build https://cenogram.pl/ceny-transakcyjne?src=mcphttp#v=1&lat=<A>&lng=<B>&z=16&tx=<id> (drop the °N/°E; lat = the °N number, lng = the °E number) — opens that exact transaction on the map. Omit &tx=<id> 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.
get_market_overviewGet a comprehensive overview of the Polish real estate transaction database. Returns: total transaction count, date range, breakdown by property type and market type, top locations, price statistics. Note: data quality varies by field - marketType is unknown for ~55% of records, transaction_date missing for ~1.7%. Note: median/average prices are market-based — fractional ownership shares and non-market deeds (public tenders, foreclosures, privileged/subsidized sales) are excluded from price aggregates. Transaction counts and coverage stay complete.
list_locationsBrowse locations in two modes: 1. TERYT hierarchy (parent param): Navigate voivodeship → county → municipality → precinct. Returns TERYT codes for use in search_transactions(teryt=...). - No parent: 16 voivodeships (2-digit codes) - 2-digit: counties (4-digit), 4-digit: municipalities (6-digit), 6-digit: precincts 2. Name search (search param): Find districts by name (flat list, legacy). If both provided, parent takes precedence. Use 'location' for quick city searches, 'teryt' for precise administrative filtering (avoids name ambiguity, e.g. 'Wałcz' is both a county and a municipality).
search_parcelsSearch for land parcels by parcel ID prefix (autocomplete). Returns matching parcels with their district, area, and GPS coordinates. Useful for finding exact parcel IDs, then searching transactions nearby. Example: search for parcels starting with '146518_8.01'.
resolve_parcelResolve a land parcel to its cadastral identity using exactly ONE of: - parcelId: a full cadastral id, either raw '/' form ('142907_2.0014.342/5') or URL-safe '-' form ('142907_2.0014.342-5'), or the internal UUID from search results. - q: a full cadastral id, a UUID, OR free-text 'locality name + parcel number' (e.g. 'Sabnie 342/5'). Name matching is exact on the locality (case-insensitive) — an unusual spelling may miss. - lat & lng: a WGS84 point inside the parcel (returns the parcel(s) containing that point). Returns a list of matching parcels with district, area, and coordinates; 'truncated' when the name+number match was capped. When nothing matches, coverage is not_covered and the credit is refunded. Use this to turn an address point, a coordinate, or a locality+number into a concrete parcel id — then feed that id to search_transactions (parcelId) to see its sale history. Costs 1 API token (refunded when nothing matches).
get_parcel_reportThe whole dossier for one land parcel in a single call: the parcel core (location, area, land use, plan designation), all nine enrichment layers (flood risk, heritage listing, landslide risk, nuisance surroundings, public-transport access, general-plan zoning, buildings on the parcel, recent building activity, agricultural-land eligibility), the parcel's transaction history (newest first, up to 20), a local price context (median zł/m² for the county and the locality over the last 12 months) and a municipal context (a headline demographic/economic subset plus upcoming-infrastructure signals for the gmina). Address it by a full cadastral id in the natural '/' form ('142907_2.0014.342/5'), the URL-safe '-' form, or the internal UUID from a search or resolve result. Each section carries its own state, shown explicitly: covered = a definitive result; covered_no_data = the parcel was checked and nothing was found (still billed); not_covered = outside our data (refunded); not_computed = a live computation could not finish in time (refunded — the rest of the report still returns, so a report can be partial). The two context sections instead use full / low_sample / suppressed / no_data. Prefer this over calling the per-layer parcel tools one by one — it is one call at a flat price and never costs more than the sum of its parts. Use resolve_parcel first when you only have an address, a coordinate, or a 'locality + number'. Costs 35 API tokens. Billing is by outcome (see the billing line on the response): a parcel that cannot be resolved is fully refunded; a resolved parcel where no layer had data is billed only the core floor (1 token) with the rest refunded; a resolved parcel with at least one covered layer is billed in full.
search_by_polygonSearch real estate transactions within a geographic polygon. 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: <A>°N, <B>°E" line, build https://cenogram.pl/ceny-transakcyjne?src=mcphttp#v=1&lat=<A>&lng=<B>&z=16&tx=<id> (drop the °N/°E; lat = the °N number, lng = the °E number) — opens that exact transaction on the map. Omit &tx=<id> 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]]]}
compare_locationsCompare real estate statistics across multiple locations side-by-side. Provide 2-5 district names to compare median price/m², average area, and transaction counts. Use list_locations first to find valid location names. Requires at least one filter besides districts (e.g., propertyType). Example: compare Mokotów, Wola, Ursynów for apartments. Note: median/average prices are market-based — fractional ownership shares and non-market deeds (public tenders, foreclosures, privileged/subsidized sales) are excluded from price aggregates. Transaction counts and coverage stay complete.
get_demographicsDemographic, economic, housing and other local statistics for a Polish location, from GUS BDL (Bank Danych Lokalnych) — Poland's public Central Statistical Office open-data bank. ~50 indicators across 11 categories (population, economy, housing, spatial planning, infrastructure, environment, safety, education, prices) plus a few derived metrics. Address by location (city/county name) OR teryt. A name resolves to county/powiat (4-digit) level; for richer gmina/district-level data (L6) pass a 6 or 7-digit teryt. teryt wins when both are given. Use list_locations to find TERYT codes — neighborhoods/osiedla are NOT addressable here. A query returns the requested level PLUS all parent levels (a gmina query also yields powiat, NUTS3 region and voivodeship indicators). Optional year, or yearFrom+yearTo for a time series, and category to filter. Cost: 1 token.
get_infrastructure_signalsSignals that a Polish municipality is about to build infrastructure — sewerage, water supply, roads, street lighting, gas network or cycling infrastructure. Three independent public sources: tenders published in the national public procurement bulletin (rolling 12-month window), membership in an agglomeration of the national urban waste-water treatment programme (where collective sewerage exists or is planned), and the municipality's own planned capital expenditure from its multi-year financial forecast. Address by location (city/county name → aggregates every municipality in that county) OR teryt (6-7 digits = one municipality, 4 digits = a county aggregate). teryt wins when both are given. Use list_locations to find codes. Known limits, state them when you report results: the bulletin carries only contracts BELOW the EU procurement thresholds (from 2021), so the largest investments are not visible here. A tender is attributed to the SEAT of the contracting authority, not to the works location — county and national authorities tender works in other municipalities. The category counters therefore include municipal authorities only, while the recent-notice list shows every authority with a flag. Absence of tenders is NOT evidence that a municipality is not investing. Cost: 1 token.
estimate_value[Beta] Estimate the market value of an apartment from comparable registered transaction prices near a point. An orientation estimate, NOT a certified appraisal (operat szacunkowy) — it does not account for the unit's condition, finish standard or floor, and does not replace a surveyor's valuation. Address by lat + lng (a point on the map) OR parcelId (a full cadastral id or internal UUID; the parcel centroid is used) — exactly one. area (usable area in m², 10–250) is REQUIRED: there is no per-address floor-area source in Poland, so the caller supplies it. Optional: rooms (1–10) and market (primary/secondary) narrow the comparables; includeComps (default true) echoes the nearest comparables it weighed. Returns the point estimate, a likely and a wide value range, a confidence band, the comparable count, and an as_of date. as_of reflects transaction-data freshness, which lags by county — estimates are NOT directly comparable across cities with different as_of. Apartments only (v1), 10–250 m². Too few comparables near the point → no estimate (the credit is refunded). Costs 5 API tokens, refunded when no estimate is produced. Note: median/average prices are market-based — fractional ownership shares and non-market deeds (public tenders, foreclosures, privileged/subsidized sales) are excluded from price aggregates. Transaction counts and coverage stay complete.
get_rental_yieldEXPERIMENTAL (beta): this tool may change or be withdrawn without notice; do not build critical workflows on it. Estimate the gross rental yield for a Polish city or county: annualized median asking rent (PLN/m²/month × 12) divided by the median apartment transaction price per m² (secondary market) from the RCN registry. Gross and top-line only — excludes vacancy, management, tax and maintenance. Indicative, not investment advice. Address by location (city name → resolves to a county) OR teryt (4-digit county code; 6-digit = dzielnica where available, today Warszawa's 18 districts, otherwise truncated to the county; teryt wins when both are given). Both sides need at least 5 samples or the result is suppressed. Not comparable across cities with different as_of dates (RCN publication lag varies by county). Rent and transaction prices come from different sources, so the yield is an approximation. Coverage is county-level only (miasta na prawach powiatu) plus Warszawa's 18 districts, and further limited to cities with asking-rent data. A town inside a larger powiat (e.g. Sandomierz, Pruszków), a non-Warszawa city district, or an osiedle does NOT resolve and returns a 404 — do not pass such names. Unless the location is a major city you already know is covered, call list_rental_yield_locations FIRST to get valid names, or pass a 4-digit county TERYT. Optional areaBucket restricts both sides to an apartment area range in m2 (e.g. '40-50'). Area ranges are NOT additive — a bucket does not sum back to 'all'. The transaction-price denominator uses the market median. Note: median/average prices are market-based — fractional ownership shares and non-market deeds (public tenders, foreclosures, privileged/subsidized sales) are excluded from price aggregates. Transaction counts and coverage stay complete.
list_rental_yield_locationsEXPERIMENTAL (beta): this tool may change or be withdrawn without notice; do not build critical workflows on it. List the cities/counties for which get_rental_yield can return data (asking-rent coverage). Use this to discover valid location/teryt values for get_rental_yield instead of guessing names. Each entry is coverage signal only (offer sample size + confidence) — it does not compute the yield; call get_rental_yield(location|teryt) for the actual yield. Optional search filters by city name (diacritic-insensitive substring, min 2 chars). Results are sorted by rent_sample_n descending. Free (0 credits).
get_price_spreadEXPERIMENTAL (beta): this tool may change or be withdrawn without notice; do not build critical workflows on it. Measure the asking-vs-transaction price spread for a Polish city or county: how far the median asking price per m² of apartments for sale sits above (or below) the median apartment transaction price per m² from the RCN registry. spread_pct = (asking − transaction) / transaction × 100. The spread can be NEGATIVE (asking below transaction) in premium-secondary cities — that is a valid answer, not an error. Address by location (city name → resolves to a county) OR teryt (4-digit county code; 6-digit = dzielnica where available, today Warszawa's 18 districts, otherwise truncated to the county; teryt wins when both are given). Both sides need at least 5 samples or the result is suppressed. For marketType='all' (the default), sale offers are a mix of primary and secondary market, so the transaction denominator covers the whole market. With marketType='secondary' or 'primary', both the asking and transaction sides are narrowed to that single market segment. Not comparable across cities with different as_of dates (RCN publication lag varies by county). Asking and transaction prices come from different sources, so the spread is an approximation. Coverage is county-level only (miasta na prawach powiatu) plus Warszawa's 18 districts, and further limited to cities with asking-sale data. A town inside a larger powiat (e.g. Sandomierz, Pruszków), a non-Warszawa city district, or an osiedle does NOT resolve and returns a 404 — do not pass such names. Unless the location is a major city you already know is covered, call list_price_spread_locations FIRST to get valid names, or pass a 4-digit county TERYT. Optional areaBucket restricts both sides to an apartment area range in m2 (e.g. '40-50'). Area ranges are NOT additive — a bucket does not sum back to 'all'. The transaction-price denominator uses the market median. Note: median/average prices are market-based — fractional ownership shares and non-market deeds (public tenders, foreclosures, privileged/subsidized sales) are excluded from price aggregates. Transaction counts and coverage stay complete.
list_price_spread_locationsEXPERIMENTAL (beta): this tool may change or be withdrawn without notice; do not build critical workflows on it. List the cities/counties for which get_price_spread can return data (asking-sale coverage). Use this to discover valid location/teryt values for get_price_spread instead of guessing names. Each entry is coverage signal only (sale offer sample size + confidence) — it does not compute the spread; call get_price_spread(location|teryt) for the actual spread. Optional search filters by city name (diacritic-insensitive substring, min 2 chars). Results are sorted by asking_sample_n descending. Free (0 credits).
get_building_breakdownGet the building-by-building breakdown for one transaction: footprint area, number of storeys, and estimated total floor area (footprint × storeys) for each building on the property. search_transactions / search_by_area / search_by_polygon return per-transaction building SUMS inline; this tool splits them into individual buildings. Use it after a search when a result has building data and you need the detail (e.g. a developed-land deed covering several buildings). The transaction_id is the id shown on a search result that has building data. Cost: 4 tokens. Returns nothing for a transaction with no buildings.
get_transaction_floodGet the parcel-by-parcel flood-hazard breakdown for one transaction: for each linked plot that sits in a mapped flood zone — the worst hazard category (high/medium/low, i.e. ~1-in-10-year to ~1-in-500-year), the hazard type (river/coastal/infrastructure), the share of the plot inside the zone, and the full per-scenario list (each with its return period). search_transactions (and search_by_area) surface a per-transaction worst-case flood_risk inline; this tool splits that into the individual parcels and scenarios behind it. Use it after a search when a result shows flood_risk. (search_by_polygon does not include flood inline.) TWO-STATE: a transaction whose land is in no mapped zone returns nothing — absence of a zone is never asserted as "safe". Cost: 4 tokens (refunded when there is no flood data).
get_transaction_heritageGet the parcel-by-parcel heritage-listing breakdown for one transaction: for each linked plot with a detected heritage listing — the status (listed = a protected monument on/at the plot; zone = the plot lies within a protected urban layout or the designated surroundings of a monument), the share of the plot inside the protected area (when measurable), and the individual entries (category, name, function, period, entry date). search_transactions (and search_by_area) surface a per-transaction heritage_status inline; this tool splits that into the individual parcels and entries behind it. Use it after a search when a result shows a heritage listing. (search_by_polygon does not include heritage inline.) TWO-STATE: a transaction with no detected listing returns nothing — absence of a detection is never asserted as "not listed". Indicative data — the regional heritage conservator makes the final, binding determination. Cost: 4 tokens (refunded when there is no heritage data).
get_transaction_landslideGet the parcel-by-parcel landslide-hazard breakdown for one transaction, based on official landslide-hazard maps (1:10,000 scale): for each linked plot that intersects a mapped hazard area — the worst category ('landslide' = a mapped landslide area, 'threatened' = an area threatened by mass movements), the share of the plot inside the mapped zones, and the per-zone list (each with its source_version_date — the source-record version date, not a survey/observation date). An intersection at this scale means the parcel overlaps a mapped hazard area, not that the parcel itself is a landslide. search_transactions (and search_by_area) surface a per-transaction worst-case landslide_risk inline; this tool splits that into the individual parcels and zones behind it. Use it after a search when a result shows a landslide risk. (search_by_polygon does not include landslide inline.) TWO-STATE: a transaction whose land is in no mapped zone returns nothing — absence of data is never an assertion of safety. Cost: 4 tokens (refunded when there is no landslide data).
get_transaction_surroundingsGet the plot-by-plot surroundings profile for one transaction: for each linked plot, the distance in meters to the nearest cemetery, landfill (waste disposal site), sewage treatment plant, industrial/storage area, large industrial plant, and intensive livestock farm, from reference land-use and environmental-registry data. Useful for due-diligence on nearby nuisances. Distances are approximate and measured from the plot boundary; 0 means the plot touches or overlaps such an area. Each category is searched within a fixed radius only: cemetery 1 km, landfill 3 km, sewage treatment 2 km, industrial/storage 1 km, large industrial plant 3 km, intensive livestock farm 3 km. TWO-STATE: a null/absent distance means no such object within the search radius in the reference data — it is NEVER a guarantee that none exists. assessed=false means the plot has not been evaluated yet (no statement either way). Cost: 4 tokens (refunded when there is no informative data — no linked plots, or none evaluated yet).
get_transaction_transitGet the parcel-by-parcel public transport access breakdown for one transaction: for each linked plot, the nearest public transport stop distances per transaction parcel, by mode (rail/metro/tram/bus), from open GTFS data — plus the nearest stop's name for each mode present. A mode is present only when a stop of that mode is within its cap (rail/metro 3000 m, tram 1500 m, bus 1000 m). TWO-STATE: a transaction whose land has no stop within cap in any mode returns nothing — absence of a row is never asserted as "no transit access" (open feeds cover cities and national rail, not every rural area). Cost: 4 tokens (refunded when there is no transit data).
get_transaction_permitsGet the building-permit history for one transaction's parcels, from the official national registry of positively resolved building permits and works notifications (records since 2016): for each case — its kind (permit / notification), the building intent and works type, the statutory object category, the deciding authority, the decision or intake date, the investment address, and the volume. Use it after a search to screen what has been built or approved on the transaction's land — a leading indicator of development activity. Match is by the parcel's current identifier, so splits/merges break the link, and only positively resolved cases are held (no pending or refused applications). TWO-STATE: a transaction whose parcels have no registered case returns nothing — an empty result is never a confirmation that nothing was ever planned. Cost: 4 tokens (refunded when there is no record).
get_transaction_planningGet the general-plan (plan ogólny, POG) zoning for one transaction's land: for each linked plot, the planning zones that cover it — zone symbol and name, the share of the plot each zone covers, and the building parameters the plan sets (max building height, max development intensity, max built-up coverage, min biologically active area) — plus any overlay areas (infill development area / obszar uzupełnienia zabudowy, central development area) that sit on top. Coverage is honest and THREE-STATE: 'covered' returns zone data; 'covered_no_data' means the municipality has an adopted general plan but no zone data covers these plots in the data yet; 'not_covered' means no published general-plan data for this municipality yet — this is NEVER a claim that the municipality has no plan. General plans are still being adopted across Poland, so coverage grows over time. Use it for feasibility and permitted-use questions on a plot. Cost: 4 tokens (refunded when there is no zone data for the transaction — 'covered_no_data' or 'not_covered').
get_transaction_farmlandGet the parcel-by-parcel agricultural land-eligibility breakdown for one transaction, from official nationwide agricultural land-eligibility data (updated weekly): for each linked parcel with a matched eligible agricultural area — the eligible area in square metres, its share of the parcel (when the parcel's measured area is known), and how many source features compose it. The response also reports how many of the transaction's linked parcels carry a match and the source snapshot date. Useful for due-diligence on land that is actually eligible/maintained as agricultural (beyond what a registry classification says on paper). TWO-STATE: a parcel with no matched eligible area returns nothing — absence of a match is NEVER a statement that the property is non-agricultural (small plots that are not actively farmed are simply absent, the reference layer has its own update cadence, and older transactions can reference renumbered parcels). Cost: 4 tokens (refunded when there is no eligible agricultural area for the linked parcels).
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