Ground Rent Cost Calculator
Historic leasehold properties often contain clauses where ground rent doubles at set intervals — typically every 10 to 25 years. A seemingly modest £200/year ground rent can become £3,200/year after 40 years if it doubles every 10 years. This calculator shows you the future ground rent cost at your planned exit and why doubling ground rent clauses can make a property unmortgageable and unsaleable.
Why this matters
The Grenfell inquiry and subsequent leasehold reforms highlighted the scandal of escalating ground rents. Many landlords who purchased flats with doubling clauses have found their properties now impossible to sell or remortgage.
Key points
- A 'doubling ground rent clause' means ground rent doubles at the review period
- Mortgage lenders will not lend on properties where annual ground rent exceeds 0.1% of property value
- Post-Leasehold Reform Act 2022: all new residential leases must have a peppercorn (zero) ground rent
- Existing leases with escalating ground rent can be challenged through the Leasehold Advisory Service (LEASE)
- Ground rent buy-out (leasehold enfranchisement) may be possible — but can cost thousands
- A 90-year lease extension simultaneously eliminates ground rent on pre-2022 leases
Frequently asked questions
What is a doubling ground rent clause?
A doubling ground rent clause specifies that ground rent increases by doubling at fixed intervals (e.g. every 10, 15, or 25 years). For example, a £250/year ground rent doubling every 10 years becomes £2,000/year after 30 years and £4,000/year after 40 years.
Can a doubling ground rent make my property unmortgageable?
Yes — mortgage lenders will refuse to lend on properties where the ground rent exceeds, or is likely to exceed, 0.1% of the property value within the mortgage term. For a £300,000 flat, that means a ground rent above £300/year is problematic.
Does the 2022 Leasehold Reform Act help me?
The Leasehold Reform (Ground Rent) Act 2022 banned ground rents above a peppercorn on all new residential leases from 30 June 2022. It does not retrospectively change existing leases. Owners of affected properties can seek a lease extension to eliminate the problematic clause.
How do I extend my lease to remove ground rent?
You can negotiate a lease extension directly with the freeholder or use the statutory route under the Leasehold Reform Act. A statutory extension adds 90 years and reduces ground rent to a peppercorn. This typically costs £10,000–£50,000+ depending on the property.