Landmark Information Group

aid: landmark-information
url: https://raw.githubusercontent.com/api-evangelist/landmark-information/refs/heads/main/apis.yml
name: Landmark Information Group
kind: company
description: 'Landmark Information Group is a United Kingdom property and land data business, part of Daily Mail and General
  Trust (DMGT), that sits in the middle of the UK residential and commercial property transaction rather than at the listing
  end of it. Founded in 1995 and headquartered in Exeter, it aggregates 700+ datasets from nearly 400 suppliers — Ordnance
  Survey mapping and AddressBase/UPRN addressing, environmental and flood and mining risk, historical maps, planning applications,
  and Barbour ABI project data — and sells them as conveyancing search reports (SearchFlow, Envirocheck, RiskView, SiteSolutions),
  estate agency compliance and material information products (LandmarkAgent, Metropix floor plans), case management software
  for property lawyers (Optimus, Intelliworks, Ochresoft, Vantage), and lender/surveyor valuation infrastructure (Secure Panel
  Network SPN and SPN+, Q-Guard). The UK has no MLS and no RESO equivalent — residential listings are controlled by the Rightmove/Zoopla
  duopoly and reached through agency CRMs — so Landmark is not a listings company; it is the transaction-data and workflow
  layer beneath conveyancers, lenders, surveyors, and agents. Its API posture is unusually honest for this sector: Landmark
  runs a genuinely public, un-gated API documentation portal at landmarkcloudservices.com that publishes full OpenAPI 3.x
  contracts for its Compliance/Order, Conveyancing, Intelliworks, Document Vault, and Milestone Notification APIs, plus a
  public HTML technical pack for the Barbour ABI-powered Planning API. Reading the contracts is open to anyone; calling them
  is not. Every API is OAuth 2.0 client-credentials against Landmark''s Auth0 tenant with a client ID and secret issued only
  after a commercial account is onboarded ("your Landmark contact will confirm what''s available to you"), and the Planning
  API requires a paid subscription or pay-as-you-go agreement plus an API key issued by Landmark. There is no RESO Web API
  certification, no RESO Data Dictionary posture, no OData $metadata document and no Universal Property Identifier anywhere
  in Landmark''s surface — RESO is a North American MLS construct and is simply absent from the UK market. Landmark publishes
  no open data of its own; the open UK property layer belongs to HM Land Registry and Ordnance Survey, both of which are Landmark
  suppliers rather than Landmark products.'
accessModel:
  pricing: paid
  onboarding: partner-only
  trial: true
  try_now: false
  public: false
  label: Paid · Commercial onboarding required · Public documentation
  confidence: high
  source:
  - documentation
  - authentication
  generated: '2026-07-26'
  method: observed
image: https://www.landmarkcloudservices.com/assets/favicon.png
tags:
- Real Estate
- United Kingdom
- PropTech
- Property Data
- Conveyancing
- Land Registry
- Geospatial
- Valuation
- Anti-Money Laundering
- Planning Data
- Mortgage
created: '2026-07-26'
modified: '2026-07-26'
specificationVersion: '0.19'
apis:
- aid: landmark-information:landmark-order-experience-api
  name: Landmark Order Experience API
  description: Compliance ordering API used to place and retrieve Landmark compliance product orders — AML individual and
    company checks, UK and international AML with facial recognition, Persons with Significant Control, Landmark Ownership
    Check, Scottish Title Check, Source of Funds Check and Identity Verification Check. Five operations covering order creation,
    order retrieval, order status, document download, and an AML section override. Version 1.3.1 (2026-04-15), OpenAPI 3.0.3,
    harvested from the public Landmark Cloud Services documentation portal.
  humanURL: https://www.landmarkcloudservices.com/?api=order-experience-api
  baseURL: https://api.landmarkcloudservices.com/connect
  tags:
  - Compliance
  - Anti-Money Laundering
  - Identity Verification
  - Orders
  properties:
  - type: OpenAPI
    url: openapi/landmark-information-order-experience-api-openapi.yml
  - type: APIReference
    url: https://www.landmarkcloudservices.com/order-experience-api.html
  - type: Overlay
    url: overlays/landmark-information-order-experience-api-overlay.yaml
  - type: Webhooks
    url: asyncapi/landmark-information-webhooks.yml
  - type: AgentSkill
    url: skills/landmark-information-order-compliance-check.md
  - type: Arazzo
    url: arazzo/landmark-information-order-compliance-check.yml
  - type: Documentation
    url: https://www.landmarkcloudservices.com/order-experience-api.html
  - type: Authentication
    url: authentication/landmark-information-openid-configuration.json
- aid: landmark-information:landmark-conveyancing-experience-api
  name: Landmark Conveyancing Experience API
  description: Panel conveyancing API for quoting, instructing and managing conveyancing work through Landmark Optimus. Introducers
    create quotes, choose a conveyancer and instruct on a client's behalf; conveyancers accept or reject assigned cases and
    progress them against one shared case record. Twenty paths across Quotes and Cases including quote PDF generation, persons,
    instruct, accept/reject, status, handler, activities, tasks, notes and documents. Version 0.8.1, OpenAPI 3.0.3, with several
    endpoints explicitly marked Preview and not yet safe to build against. Uses OData-style $filter and $orderby query parameters,
    but is not an OData service and publishes no $metadata document.
  humanURL: https://www.landmarkcloudservices.com/?api=conveyances-experience-api
  baseURL: https://api.landmarkcloudservices.com/conveyances
  tags:
  - Conveyancing
  - Quotes
  - Cases
  - Panel Management
  properties:
  - type: OpenAPI
    url: openapi/landmark-information-conveyancing-experience-api-openapi.yml
  - type: APIReference
    url: https://www.landmarkcloudservices.com/conveyances-experience-api.html
  - type: Overlay
    url: overlays/landmark-information-conveyancing-experience-api-overlay.yaml
  - type: AgentSkill
    url: skills/landmark-information-quote-and-instruct-conveyancing.md
  - type: Arazzo
    url: arazzo/landmark-information-quote-to-instruction.yml
  - type: Documentation
    url: https://www.landmarkcloudservices.com/conveyances-experience-api.html
  - type: Documentation
    url: https://www.landmark.co.uk/products/optimus/
  - type: Authentication
    url: authentication/landmark-information-openid-configuration.json
- aid: landmark-information:landmark-intelliworks-api
  name: Landmark Intelliworks APIs
  description: Case creation and management API for the Intelliworks legal case management system, letting third-party systems
    create and update cases outside the Intelliworks UI for Sale, Purchase, New Build Purchase, General Property, Remortgage,
    Equity Release, Transfer of Equity, Wills, Lasting Power of Attorney and Probate workflows. Eight paths covering case
    create/update/list, task upsert, milestones, transaction requests, and document upload/list/download. Version 2.3.0, OpenAPI
    3.0.1.
  humanURL: https://www.landmarkcloudservices.com/?api=intelliworks-experienceapi-CreateCase-api
  baseURL: https://api.landmarkcloudservices.com/
  tags:
  - Case Management
  - Conveyancing
  - Documents
  - Legal
  properties:
  - type: OpenAPI
    url: openapi/landmark-information-intelliworks-api-openapi.yml
  - type: APIReference
    url: https://www.landmarkcloudservices.com/intelliworks-experienceapi-CreateCase-api.html
  - type: Overlay
    url: overlays/landmark-information-intelliworks-api-overlay.yaml
  - type: AgentSkill
    url: skills/landmark-information-create-intelliworks-case.md
  - type: Documentation
    url: https://www.landmarkcloudservices.com/intelliworks-experienceapi-CreateCase-api.html
  - type: Documentation
    url: https://www.landmark.co.uk/legal-conveyancing/case-management/
  - type: Authentication
    url: authentication/landmark-information-openid-configuration.json
- aid: landmark-information:landmark-document-vault-api
  name: Landmark Document Vault API
  description: API behind Contract Pack Vault — creates a secure, shareable container of transaction documents, adds and removes
    files (virus-scanned and analysed asynchronously, status Pending then Available or Quarantined), maintains property and
    reference details, manages the recipient organisation and its recipients, and reads the vault activity audit trail. Ten
    paths, version 1.0.1, OpenAPI 3.0.4. Sharing itself happens in the Contract Pack Vault web app, not the API. Billed per
    vault on first document added; documented rate limit 1,000 calls per minute per caller.
  humanURL: https://www.landmarkcloudservices.com/?api=document-vault-experience
  baseURL: https://api.landmarkcloudservices.com/document-vaults
  tags:
  - Documents
  - Conveyancing
  - Contract Pack
  properties:
  - type: OpenAPI
    url: openapi/landmark-information-document-vault-api-openapi.yml
  - type: APIReference
    url: https://www.landmarkcloudservices.com/document-vault-experience.html
  - type: Overlay
    url: overlays/landmark-information-document-vault-api-overlay.yaml
  - type: AgentSkill
    url: skills/landmark-information-build-contract-pack-vault.md
  - type: Arazzo
    url: arazzo/landmark-information-assemble-contract-pack.yml
  - type: Documentation
    url: https://www.landmarkcloudservices.com/document-vault-experience.html
  - type: Documentation
    url: https://www.landmark.co.uk/legal-conveyancing/contract-pack-vault/
  - type: Authentication
    url: authentication/landmark-information-openid-configuration.json
- aid: landmark-information:landmark-milestone-notification-service-api
  name: Landmark Milestone Notification Service API
  description: Callback registration API for valuation transaction milestone notifications on the Landmark Secure Panel Network
    (SPN). Consumers register, update and delete callback URLs that Landmark then calls as valuation milestones occur, making
    this Landmark's webhook subscription surface. Two paths, version 1.0.0, OpenAPI 3.0.1. Documented rate limit 250 requests
    per customer per minute.
  humanURL: https://www.landmarkcloudservices.com/?api=milestone-service-api
  baseURL: https://api.landmarkcloudservices.com/valuation-spn/milestones/callbacks
  tags:
  - Webhooks
  - Valuation
  - Milestones
  - Lending
  properties:
  - type: OpenAPI
    url: openapi/landmark-information-milestone-notification-service-api-openapi.yml
  - type: APIReference
    url: https://www.landmarkcloudservices.com/milestone-service-api.html
  - type: Overlay
    url: overlays/landmark-information-milestone-notification-service-api-overlay.yaml
  - type: Webhooks
    url: asyncapi/landmark-information-webhooks.yml
  - type: AgentSkill
    url: skills/landmark-information-subscribe-valuation-milestones.md
  - type: Arazzo
    url: arazzo/landmark-information-subscribe-valuation-milestones.yml
  - type: Documentation
    url: https://www.landmarkcloudservices.com/milestone-service-api.html
  - type: Documentation
    url: https://www.landmark.co.uk/products/spn/
  - type: Authentication
    url: authentication/landmark-information-openid-configuration.json
- aid: landmark-information:landmark-planning-api
  name: Landmark Planning API (powered by Barbour ABI)
  description: RESTful planning-application data API combining Barbour ABI project information with Landmark geospatial data,
    covering UK and Republic of Ireland planning applications from 1 January 2017 (with historical project data back to 1997)
    across 19 documented attributes including UPRN, easting/northing, latitude/longitude and GeoJSON/WKT site boundaries.
    Documented operations are GET login, GET logout, GET customers, GET lookups, GET locations (preview search with a JSON
    query DSL and point-radius distance filtering) and GET locations/{project_id} (full details, which consumes a credit under
    pay-as-you-go). Documented in public HTML only — no OpenAPI, Postman collection, or other machine-readable contract is
    published. Authentication is a Landmark-issued x-api-key plus a Basic-auth login (base64 of username and SHA256-hashed
    password) that returns a bearer token valid until 30 days of disuse.
  humanURL: https://www.landmark.co.uk/products/planning-api/planning-api-documentation/
  baseURL: https://api.barbour-abi.com/v4
  tags:
  - Planning
  - Geospatial
  - Land Development
  - Commercial Real Estate
  properties:
  - type: Documentation
    url: https://www.landmark.co.uk/products/planning-api/
  - type: APIReference
    url: https://www.landmark.co.uk/products/planning-api/planning-api-documentation/
- aid: landmark-information:landmark-geodata-web-map-tile-service
  name: Landmark Geodata Web Map Tile Service (WMTS)
  description: On-demand raster mapping tile service delivered against the Open Geospatial Consortium Web Map Tile Service
    (OGC WMTS) standard, with 20 zoom levels spanning Ordnance Survey MasterMap through national-scale mapping, for use inside
    GIS platforms and web applications. Landmark documents the product and names the standard publicly but publishes no endpoint
    URL and no GetCapabilities document; access begins with a register-your-interest form at geodata.landmark.co.uk and a
    commercial agreement, so no baseURL is recorded here.
  humanURL: https://www.landmark.co.uk/products/web-map-tile-service-0/
  tags:
  - Geospatial
  - Mapping
  - WMTS
  - OGC
  properties:
  - type: Documentation
    url: https://www.landmark.co.uk/products/web-map-tile-service-0/
  - type: SignUp
    url: https://geodata.landmark.co.uk/register-your-interest-in-wmts
common:
- type: DeveloperPortal
  url: https://www.landmarkcloudservices.com/
- type: APIReference
  url: https://www.landmarkcloudservices.com/
- type: GettingStarted
  url: https://www.landmarkcloudservices.com/conveyances-experience-api.html#section/Getting-started
- type: Support
  url: https://www.landmark.co.uk/our-group/contact/
- type: Conventions
  url: conventions/landmark-information-conventions.yml
- type: ErrorCatalog
  url: errors/landmark-information-problem-types.yml
- type: Lifecycle
  url: lifecycle/landmark-information-lifecycle.yml
- type: ChangeLog
  url: changelog/landmark-information-changelog.yml
- type: Sandbox
  url: sandbox/landmark-information-sandbox.yml
- type: RateLimits
  url: rate-limits/landmark-information-rate-limits.yml
- type: Conformance
  url: conformance/landmark-information-conformance.yml
- type: DataModel
  url: data-model/landmark-information-data-model.yml
- type: WellKnown
  url: well-known/landmark-information-well-known.yml
- type: Webhooks
  url: asyncapi/landmark-information-webhooks.yml
- type: MCPServer
  url: mcp/landmark-information-mcp.yml
- type: LLMsTxt
  url: llms/landmark-information-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/landmark-information-agentic-access.yml
- type: Arazzo
  url: arazzo/_index.yml
- type: DomainSecurity
  url: security/landmark-information-domain-security.yml
- type: OAuthScopes
  url: scopes/landmark-information-scopes.yml
- type: Authentication
  url: authentication/landmark-information-authentication.yml
- type: Website
  url: https://www.landmark.co.uk/
- type: Documentation
  url: https://www.landmarkcloudservices.com/
- type: Authentication
  url: authentication/landmark-information-openid-configuration.json
- type: SignUp
  url: https://www.landmark.co.uk/our-group/contact/
- type: Blog
  url: https://www.landmark.co.uk/news-insights/blog/
- type: BlogRSS
  url: https://www.landmark.co.uk/feed/
- type: PrivacyPolicy
  url: https://www.landmark.co.uk/privacy-policy/
- type: TermsOfService
  url: https://www.landmark.co.uk/terms-conditions/
- type: GitHubOrganization
  url: https://github.com/Landmark-Information-Group
- type: LinkedIn
  url: https://www.linkedin.com/company/landmark-information-group
- type: Careers
  url: https://www.landmark.co.uk/careers/
- type: Partners
  url: https://www.landmark.co.uk/partners-suppliers/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com