Escalating Ground Rent Calculator
Project a ground rent that doubles at fixed intervals, the total paid over the term, and what the final rent is worth to a freeholder.
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A ground rent that doubles at fixed intervals looks trivial at the start and becomes ruinous later. Doubling every ten years is a compound growth rate of about 7.2% a year, sustained for the length of a lease, which is faster than any plausible inflation assumption.
The damage is not only the payments. A rapidly escalating ground rent reduces what the property is worth and can make it unmortgageable, because lenders assess the future liability rather than the current amount.
The calculation
The rent is paid at its current level each year and doubles whenever the interval is reached. The capitalised value is the final rent divided by the yield a freehold investor would accept, which is how these income streams are valued and traded.
Worked example
A 250 ground rent doubling every ten years reaches 4,000 by year fifty, having doubled four times, with 77,500 paid in total. Capitalised at a 5% yield, that final 4,000 income is worth 80,000 to a freeholder — which is why these clauses were written and why they are so expensive to remove.
Check the clause before you buy
Doubling every ten or fifteen years has made properties unmortgageable in several markets and triggered regulatory intervention in some. Read the ground rent review clause in the lease itself, not the summary, and price in the cost of buying the freehold or varying the term.
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Create your free property pageFrequently asked questions
Why do lenders object to doubling ground rents?
Because they assess the liability over the whole lease, not today figure. A rent that compounds at roughly 7% a year becomes a significant charge against the property and reduces what the security is worth in a repossession.
Can an escalating ground rent be changed?
Sometimes, by negotiating a variation with the freeholder or by buying the freehold outright, both of which cost money. Several jurisdictions have legislated to restrict or abolish such clauses, so check what applies locally.
Is a rent linked to inflation better?
Generally much better, because it tracks the economy rather than compounding at a fixed multiple. An inflation-linked review is far more acceptable to lenders than a doubling clause of the same starting amount.
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