You Can Own the Building and Lease the Ground Beneath It
A ground lease splits ownership of the land from ownership of what is built on it. The arrangement lets development happen without buying the site and creates a specific reversion problem.
The Structure
Under a ground lease, a landowner leases the site to a tenant for a long term, commonly fifty to ninety nine years. The tenant develops the site and owns the improvements during the term.
At expiry, the improvements usually revert to the landowner without payment. The building the tenant financed and constructed becomes the landowner property.
The tenant owns a building on a clock. Everything about how the asset is financed and valued follows from how much time remains.
Why Landowners Use Them
Certain owners cannot or will not sell. Institutions holding land for very long horizons, families preserving holdings across generations, religious bodies, universities, and public authorities frequently prefer to retain ownership while generating income.
A ground lease produces steady income with essentially no operating responsibility, plus eventual return of an improved site. For an owner whose horizon genuinely extends beyond a lease term, that reversion is real value rather than a theoretical one.
Why Developers Accept Them
| Advantage | Effect |
|---|---|
| No land purchase | Far less capital required |
| Access to prime sites | Land that is never for sale |
| Rent is deductible | Ongoing cost rather than capital outlay |
Removing land cost from the capital requirement can be the difference between a project being feasible and not, particularly in expensive locations where land is the largest single component.
The Depreciating Asset Problem
The complication is that a leasehold interest loses value as the term shortens. A building with eighty years remaining is close to freehold in value. The same building with fifteen years remaining is worth far less, because the owner will surrender it soon.
The decline is not linear. Value holds up reasonably while the term is long and falls away sharply as expiry approaches, because both buyers and lenders need the remaining term to exceed their own horizons.
Why Financing Gets Difficult
Lenders require the lease term to extend well beyond the loan maturity, since their security disappears at expiry. A common requirement is that the term exceed the loan by a substantial margin.
That means a leasehold becomes progressively harder to finance as it shortens, which reduces the buyer pool, which lowers the price further. The financing constraint and the value decline reinforce each other.
Lenders also require protections against the ground lease being terminated for tenant default, since that would extinguish their security. Rights to receive notice and to cure the default are standard and essential.
The Rent Review Risk
Most long ground leases include periodic rent resets, often to a percentage of current land value. Over decades, land values can rise enormously, and a reset can multiply the ground rent.
Where the reset is large, it can consume the economics of the building above it. There are cases of buildings rendered effectively worthless by ground rent resets that exceeded what the property could generate.
Anyone assessing a leasehold interest should read the reset mechanism before anything else, because it can matter more than the remaining term.
The Bottom Line
A ground lease separates land from improvements, letting development proceed without buying the site and returning the building to the landowner at expiry. The leasehold interest depreciates as the term shortens, financing tightens as it does, and rent reset clauses can transfer the entire economics of the building to the landowner well before expiry arrives.