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