Leasehold Property Data API — Tenure, Years Remaining & Ground Rent
Instant leasehold data lookups for any UK property. Pass a UPRN to retrieve tenure type, lease term, years remaining, ground rent, and service charge information sourced from Land Registry title records. Used by conveyancers, mortgage lenders, and property platforms to surface leasehold risks before exchange.
What's in the API
Tenure type
Leasehold or freehold determination from Land Registry title records. Includes share-of-freehold flags where applicable.
Lease term & years remaining
Original lease term and calculated years remaining. Flag properties below the 80-year mortgage lending threshold automatically.
Ground rent
Ground rent amount where registered with Land Registry. Includes doubling clause flags for problematic leasehold terms under scrutiny from the Leasehold Reform Act.
Freeholder details
Registered freeholder name and title number — useful for identifying freeholder type (institutional, local authority, private) for due diligence.
Sample response
{
"uprn": "100023336956",
"address": "Flat 3, 14 Victoria Road, Bristol BS8 4ES",
"tenure": "Leasehold",
"lease_term_years": 125,
"lease_start_date": "1999-01-01",
"years_remaining": 98,
"ground_rent_pa": 150,
"ground_rent_review": "Doubling every 25 years",
"doubling_clause": true,
"freeholder": "Bristol Ground Rents Ltd",
"freeholder_title": "AV987654"
}Pricing
Free
£0
100 calls/mo
Starter
£49
2,000 calls/mo
Growth
£149
10,000 calls/mo
Pro
£349
50,000 calls/mo
FAQ
How complete is the lease term data?
Lease terms are derived from Land Registry title register entries. Coverage is high for registered leasehold properties (approximately 70% have extractable lease terms), but older or unregistered titles may have incomplete data.
Does the API reflect the Leasehold Reform Act 2024?
The API returns the data as registered with Land Registry. Reforms affecting ground rent and lease extension rights are flagged in the API response where the property meets the relevant criteria.
Can I bulk-screen a portfolio for short leases?
Yes — pass UPRN lists and filter results where years_remaining is below a threshold. Growth and Pro plans support the volumes needed for portfolio-scale screening.