Deed Insight

Public API Documentation

Access UK property & land data programmatically. All endpoints return JSON. No authentication required.

Universal Search

GET /api/search

Auto-detects whether the query is a Land Registry title number, a postcode (full or partial), or free-text (address / proprietor name / area).

Parameter	Type	Description
q	string	Title number, postcode, address, area, or proprietor name (min 2 chars)
page	int	Page number (default: 1)
limit	int	Results per page (1-100, default: 20)

Examples

curl "https://deedinsight.co.uk/api/search?q=OX1+5BW" curl "https://deedinsight.co.uk/api/search?q=TG123456" curl "https://deedinsight.co.uk/api/search?q=DUNRAVEN+ESTATES" curl "https://deedinsight.co.uk/api/search?q=Camden"

Get Title Detail

GET /api/titles/{title_number}

Returns the title's tenure, district, addresses, proprietors (with overseas / Companies House cross-links where available), and recent PPD sales at the same postcode.

Example

curl "https://deedinsight.co.uk/api/titles/CYM566831"

Properties by Proprietor Name

GET /api/proprietors/by-name/{name}

List every title held by a proprietor name (URL-encoded, exact match).

Parameter	Type	Description
page	int	Page number (default: 1)

Example

curl "https://deedinsight.co.uk/api/proprietors/by-name/STONEGATE%20PUB%20COMPANY%20LIMITED"

Properties by Companies House Number

GET /api/proprietors/by-company/{company_number}

List every title held by a specific Companies House company. The bridge from Firm Insight — used by its company pages to surface a "this company owns N properties" badge.

Example

curl "https://deedinsight.co.uk/api/proprietors/by-company/07465254"

Search Sales (Price Paid Data)

GET /api/transactions

All filters are optional. Prices are integers in pence.

Parameter	Type	Description
postcode	string	Postcode (full or prefix)
town	string	Town name (exact)
min_price	int	Minimum price in pence
from_date	YYYY-MM-DD	Earliest transfer date
to_date	YYYY-MM-DD	Latest transfer date
page	int	Page number (default: 1)
limit	int	Results per page (1-100, default: 25)

Example

curl "https://deedinsight.co.uk/api/transactions?town=OXFORD&min_price=100000000&from_date=2024-01-01"

Reports

GET /api/reports/{report}

Reports: recent-sales, biggest-sales, new-titles, overseas-owners, top-owners. 15 items per page; max 500 pages (newest 7,500 items).

Parameter	Type	Description
page	int	Page number (default: 1, max: 500)

Example

curl "https://deedinsight.co.uk/api/reports/biggest-sales?page=1"

Cross-Site Bridge

GET /api/cross/company/{company_number}

How many UK titles a Companies House company owns, plus a sample. Designed to be called from Firm Insight so company pages can surface property holdings.

Example

curl "https://deedinsight.co.uk/api/cross/company/07465254"

Health

GET /api/health

Liveness probe. Returns {"status":"ok"}.