Property Data
Providers using this tag (61)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Strong 4 Solid coverage with minor gaps
Developing 15 Usable, with meaningful gaps to close
Thin 19 Limited public surface area
Emerging 17 Early or largely undocumented
Minimal 6 Almost no public developer surface
APIs with this tag (31)
Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →
Strong 1 Solid coverage with minor gaps
Developing 4 Usable, with meaningful gaps to close
HOVER APIREST API for creating and managing property capture jobs, retrieving 3D models and measurement deliverables...360 Property Data360 Property Data is Cotality's enterprise property data product covering structure, ownership, tax, mortga...Zillow Public Records APIRESTful JSON API over parcel, assessment and transaction records covering roughly 148 million properties ac...Zillow Zestimate APIRESTful JSON API returning Zillow property, rental and foreclosure Zestimates for approximately 100 million...
Thin 14 Limited public surface area
Verisk UnderWriting APIVerisk UnderWriting API provides personal and commercial lines insurance underwriting data including homeow...Datafiniti Property Data APIAccess a large catalog of real estate listings from dozens of websites, integrated with pricing data, ameni...SiteMinder Direct Booking APIThe Direct Booking API is a REST and JSON service that lets hotel groups on SiteMinder's Multi-Property pla...CoreLogic Australia Commercial APICommercial property data delivered into a licensee's own systems — market research, commercial valuations a...CoreLogic Australia Insurance APIInsurance-facing property data service. Named and hosted in the Cotality Developer Portal environment-detai...CoreLogic Australia Property Bureau APIProperty Bureau service. Named and hosted in the Cotality Developer Portal environment-details guide and in...CoreLogic Australia Property Details APIPer-property record retrieval keyed on the CoreLogic property identifier — core and additional attributes, ...CoreLogic Australia Property Monitor APIProperty monitoring — watch a property or portfolio for change. Named and hosted in the environment-details...CoreLogic Australia Property Profile Report APIProperty profile report generation — the API behind Cotality's Australian property, suburb and investment r...CoreLogic Australia Property Risk APIProperty risk services — the API behind Cotality's Australian hazard and resilience products. Named and hos...CoreLogic Australia Property Timeline APIChronological event timeline for a single property — sales, listing campaigns, rental campaigns and, with t...CoreLogic Australia Update APIUpdate services — the write-shaped surface of the Cotality Australian estate. Named and hosted in the envir...Flueid Property Data APIThe Property Data API from Flueid — 22 operation(s) for property data.Zillow Group Data (ZG Data) APIZillow Group Data feeds delivered through Bridge — parcels, assessments, transactions, and Zillow Group Eco...
Emerging 12 Early or largely undocumented
Clear Capital Appraisal & Orders APIOrdering and fulfillment of Clear Capital valuation products via the Property Valuation API - Hybrid Apprai...Clear Capital ClearAVM / Valuation APILending-grade automated valuation model (ClearAVM) and Rental AVM delivered over a RESTful interface, retur...Clear Capital Comparables (Comps) APIComparable sales and comparable rentals for a subject property, ranked by Clear Capital's proprietary Clear...Clear Capital Property Data APIProperty characteristics (bedrooms, bathrooms, gross living area, photos), home price index and historical ...HouseCanary Analytics APIREST API providing property-level data including AVM valuations, rental value, land value, LTV, sales histo...TrueTracts APIBackend API for the TrueTracts appraiser console — the subscription platform that performs market definitio...LightBoxPower your digital workflows using comprehensive property and location intelligence data from LightBox.BuildZoom Data APIRESTful Data API over BuildZoom's Building Permit Database — property permit history and contractor license...PropTrack APIsREST APIs providing Australian property intelligence — address suggestion and matching, property and listin...CoStar Commercial Real Estate PlatformCoStar's flagship commercial real estate information platform covering property, tenant, lease, sale, and m...Zumper APIThe Zumper API provides access to rental listings, property data, rental price insights, and tenant applica...Property Capsule Developer APIProperty Capsule's Developer API, announced live on 2020-06-18 in the company's public release notes: "Our ...
Companies reaching this through an API (5)
These companies publish an API, specification or operation carrying “Property Data” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.
Score breakdown
Frequency
52.4
log-scaled weighted occurrences
Breadth
1.4
spread across providers
Quality lift
32.8
mean composite of providers using it
Cohesion
9.8
strength of nearest seed neighbor
Where this tag sits
Related tags
AVM 16 co-occurrences
Valuation 24 co-occurrences
MLS 13 co-occurrences
Listings 17 co-occurrences
Land Registry 8 co-occurrences
Property 11 co-occurrences
RESO 8 co-occurrences
Real Estate 57 co-occurrences
Where this tag comes from
Provider tag61
Api tag29
Openapi tag4
Markets provisional
Kin Score markets whose measured providers carry this tag. Share is the fraction of the market's measured providers that carry it — it describes the market, not this tag.
| Market | Share of the market's providers |
|---|---|
| Real Estate and Proptech | 40% |
Cohort brief
Auto-generatedThe 59 providers in the APIs.io catalog tagged Property Data, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
59
of 61 in the catalog
Mean Kin Score
31.3
+9.1 vs catalog 22.2
Mean Agent Readiness
20
+8 vs catalog 12
Spread
6.7–63.9
median 32.6 · σ 14.9
How the 59 split by band
Exemplar 0Strong 4Developing 14Thin 19Emerging 17Minimal 5
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Contract Quality | 33.1 | 17.2 | +15.9 | 59 |
| Developer Ergonomics | 33.2 | 23.2 | +10 | 59 |
| Discoverability | 65.9 | 57.9 | +8 | 59 |
| Contract Governance | 11.2 | 6.5 | +4.7 | 59 |
| Access Clarity | 28 | 23.9 | +4.1 | 59 |
| Operational Transparency | 16.3 | 13 | +3.3 | 59 |
A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.
What this cohort publishes
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 15% | 13% | +2 |
| MCP server (first-party) | 14% | 12% | +2 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 20% | 11% | +9 |
| Security | 100% | 98% | +2 |
| Arazzo workflows | 7% | 2% | +5 |
| Governance rules | 24% | 16% | +8 |
mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.
Top by Kin Score
- 1 Zillapi 63.9
- 2 Mlsgrid 63
- 3 Domain Group 58.7
- 4 Ordnance Survey 54.4
- 5 REA Group 53.8
- 6 HOVER 53.1
- 7 Landmark Information Group 52.4
- 8 Bridge 49.7
- 9 Alto (Vebra / Zoopla) 49.5
- 10 Bright MLS 46.7
Top by Agent Readiness
- 1 Zillapi 58.3
- 2 Landmark Information Group 47
- 3 Domain Group 43.6
- 4 Alto (Vebra / Zoopla) 41.6
- 5 ingest0r 41.1
- 6 Microburbs 39.9
- 7 HOVER 38.1
- 8 Landgate 36.5
- 9 Hometrack 35.5
- 10 Mlsgrid 33.3
All 61 members of this roster resolve to a provider in the
catalog; 59 carry a score (97%).
The figures above describe the scored members only.
Coverage caveat. 45 of 59 scored members had under half their catalog-attributable points satisfied at all (catalog_earned / catalog_max < 0.5). They are INCLUDED in the mean above. A large share here means the cohort mean is partly a measurement of how far our enrichment reached, not only of how these providers publish.Generated from the catalog build of 24 October 2026, across 31984 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.
Coverage caveat. 45 of 59 scored members had under half their catalog-attributable points satisfied at all (catalog_earned / catalog_max < 0.5). They are INCLUDED in the mean above. A large share here means the cohort mean is partly a measurement of how far our enrichment reached, not only of how these providers publish.Generated from the catalog build of 24 October 2026, across 31984 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.