HouseData.uk

HouseData.uk provides free UK property data, aggregating official EPC, flood risk, planning applications, and price history for any postcode. It also offers landlord compliance tools for the 2030 MEES regulations, with paid full reports and investor reports. The service is web‑based, no sign‑up required for basic searches, and includes APIs for property data access.

HouseData.uk publishes 1 API contract indexed on the APIs.io network: Scoring API. Tagged areas include Company, Property, Data, United Kingdom, and Free.

The HouseData.uk catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

HouseData.uk’s developer surface includes documentation, authentication, API reference, getting-started guide, support, engineering blog, pricing, and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

49.1/100 developing Agent 33/100 agent ready Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Company Property Data United Kingdom Free

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 49.1/100 · developing

Contract Quality 13.9 / 21

Developer Ergonomics 10.8 / 17

Access Clarity 8.7 / 17

Operational Transparency 0.0 / 11

Contract Governance 2.2 / 10

Discoverability 5.6 / 9

Regulatory Posture 2.8 / 15

Agent readiness — 33/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/housedata-uk/"><img src="https://apis.io/badge/housedata-uk/card.svg" alt="HouseData.uk on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented) Ask about this →

7 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Operational Transparency scores 0.0 — up to +13.0 composite points Ask about this →
Access Clarity scores 51.1 — up to +9.8 composite points Ask about this →
Contract Governance scores 22.0 — up to +9.4 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/housedata-uk/apis.yml: open an issue on github.com/api-evangelist/housedata-uk to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

HouseData.uk Scoring API

Consent-gap risk scores for individual properties.

HouseData.uk API pricing

Prices published by HouseData.uk, read 2026-11-11 from housedata.uk/pricing. A free plan or tier is listed.

Plan	Price
Property search	Free
Standard report	£4.99 per property
Investor report	£7.99 per property
PRISM API (Free)	£0
PRISM	£29/ month
Volume	Custom

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

HouseData.uk Plans Pricing

6 plans

PLANS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Housedata Uk Context

7 classes · 40 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

HouseData.uk API Rules

58 rules · 56 error-severity 1 warn-severity 1 info-severity

SPECTRAL

JSON Schema 3

Standalone JSON Schema definitions for this provider's data models.

BatchItemError

3 properties

JSON SCHEMA

ScoreRequest

7 properties

JSON SCHEMA

ScoreResult

25 properties

JSON SCHEMA

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

HouseData.uk Authentication

apiKey/http · 2 schemes

SECURITY

HouseData.uk Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

HouseData.uk Agentic Access

3 operations · 2 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Access & Security 3

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 3

The organization behind the API

Website

Website

Blog

Blog

Website

Website

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: housedata-uk
name: HouseData.uk
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://housedata.uk/og-image.png
description: HouseData.uk provides free UK property data, aggregating official EPC, flood risk, planning applications, and
  price history for any postcode. It also offers landlord compliance tools for the 2030 MEES regulations, with paid full reports
  and investor reports. The service is web‑based, no sign‑up required for basic searches, and includes APIs for property data
  access.
url: https://artifacts.apis.io/housedata-uk/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-11 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-11'
modified: '2026-11-11'
tags:
- Company
- Property
- Data
- United Kingdom
- Free
tags_raw:
- Company
- Property
- Data
- UK
- Free
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/housedata-uk-agentic-access.yml
- type: Plans
  url: plans/housedata-uk-plans-pricing.yml
- type: Spectral
  url: rules/housedata-uk-rules.yml
- type: JSONLD
  url: json-ld/housedata-uk-context.jsonld
- type: Vocabulary
  url: vocabulary/housedata-uk-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/housedata-uk-data-model.yml
- type: ErrorCatalog
  url: errors/housedata-uk-problem-types.yml
- type: Conformance
  url: conformance/housedata-uk-conformance.yml
- type: LLMsTxt
  url: llms/housedata-uk-llms.txt
- type: Hosts
  url: hosts/housedata-uk-hosts.yml
- type: Documentation
  url: https://housedata.uk/guides
- type: DeveloperPortal
  url: https://housedata.uk/for/developers
- type: Authentication
  url: authentication/housedata-uk-authentication.yml
- type: DomainSecurity
  url: security/housedata-uk-domain-security.yml
- type: Website
  url: https://housedata.uk/
- type: APIReference
  url: https://housedata.uk/prism
- type: GettingStarted
  url: https://housedata.uk/how-it-works
- type: Support
  url: https://housedata.uk/contact
- type: Blog
  url: https://housedata.uk/blog
- type: Pricing
  url: https://housedata.uk/pricing
- type: TermsOfService
  url: https://housedata.uk/terms
- type: PrivacyPolicy
  url: https://housedata.uk/privacy
- type: DomainSecurity
  url: security/housedata-uk-domain-security.yml
- type: Website
  url: https://housedata.uk/
apis:
- aid: housedata-uk:housedata-uk-scoring-api
  name: HouseData.uk Scoring API
  description: Consent-gap risk scores for individual properties.
  humanURL: https://housedata.uk/prism#docs
  baseURL: https://housedata.uk/api/v1/prism
  tags:
  - Scoring
  properties:
  - type: OpenAPI
    url: openapi/housedata-uk-scoring-api-openapi.yml
  - type: JSONSchema
    url: json-schema/housedata-uk-score-result-schema.json
  - type: JSONSchema
    url: json-schema/housedata-uk-score-request-schema.json
  - type: JSONSchema
    url: json-schema/housedata-uk-batch-item-error-schema.json
x-enrichment:
  date: '2026-11-11'
  status: enriched
  artifacts_added: 22
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

HouseData.uk API — frequently asked questions

Does HouseData.uk have an API?

Yes. APIs.io lists 1 API from HouseData.uk, including HouseData.uk Scoring API.

Is there an OpenAPI specification for the HouseData.uk API?

Yes. APIs.io indexes 1 OpenAPI specification for HouseData.uk, each linked for download from this page.

How do I authenticate with the HouseData.uk API?

HouseData.uk uses bearer-token authentication (apiKey/http · 2 schemes). The details are profiled on APIs.io as HouseData.uk Authentication.

How much does the HouseData.uk API cost?

HouseData.uk publishes its prices; its Standard report plan is £4.99 per property as of 2026-11-11. APIs.io lists 6 pricing plans for HouseData.uk, with each plan's price, limits and inclusions under Pricing on this page.

Is the HouseData.uk API ready for AI agents?

HouseData.uk has a Kin Score of 49.1 out of 100 (developing) and an Agent Readiness score of 32.7 (agent-ready), scored by API Evangelist on 2026-11-13.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/housedata-uk"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/housedata-uk/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/housedata-uk/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.