A land lease building is a structure whose owner holds title to the building itself but rents the ground underneath from a separate landowner under a long-term agreement, usually 50 to 99 years. The building owner pays ground rent for the right to occupy the land and controls the structure within the lease’s terms, while the landowner keeps title to the dirt and eventually gets the building back when the lease ends. That split is what makes these properties cheaper to buy into and riskier to hold than conventional real estate.
How the Split Ownership Works
Two parties sit on either side of a ground lease. The landowner keeps title to the land. The building owner holds what the law calls a leasehold interest, meaning the right to use and occupy the ground for the lease’s duration, plus outright ownership of the building sitting on it. This differs from fee simple ownership, where one party owns the land and everything built on it together.
Durations are long by design. Fifty to 99 years is standard, with 99 years historically the common-law ceiling. Most U.S. states still cap ground leases at 99 years, though the specific limit varies by jurisdiction. The length exists for a reason: nobody puts up a building, or buys a unit in one, unless the lease runs long enough to justify the investment.
Everything else about the arrangement comes out of the lease document itself. Permitted uses, how ground rent gets adjusted, maintenance obligations, insurance, and what happens at expiration are all negotiated terms. Two land lease buildings on the same block can carry very different risk profiles depending on how their leases were drafted.
Ground Rent and How It Changes Over Time
Ground rent is the recurring payment the building owner makes to the landowner, usually monthly or annually. Because the lease spans decades, the agreement has to specify how that rent adjusts, or both sides end up with a number that stops making sense within a generation.
Three adjustment methods are common:
- Fixed increases at set intervals, such as every five or ten years. Predictable for the building owner, but can lag real-world land values.
- Adjustments tied to an inflation index like the Consumer Price Index. These track general inflation but can diverge sharply from local real estate values.
- Periodic reappraisals of the land’s fair market value. These most accurately reflect what the ground is worth, and they create the most uncertainty, because a reappraisal in a hot market can produce a steep rent jump.
Ground rent is pure expense. It builds no equity in the land, which the building owner will never own. That’s the core trade-off: a lower cost of entry in exchange for a payment obligation that never converts into an ownership stake.
The escalation terms deserve more attention than they usually get. A CPI adjustment or fair market value reappraisal that feels manageable in year five can become crushing by year forty if land values in the area have appreciated significantly. Running the numbers only on current ground rent, without stress-testing future escalations, is a common and expensive mistake.
What Happens When the Lease Expires
Expiration is where the structure bites hardest. Most ground leases include a reversion clause, meaning the building and all improvements become the landowner’s property when the term ends. The building owner, or whoever owns a unit in it at that point, walks away with nothing from the structure.
The arrangement is harsh on paper and priced into the deal from the start. The building owner paid below-market occupancy costs by leasing rather than buying the land, and the landowner accepted lower returns during the term in exchange for eventually taking both the land and the building. Reversion is what makes the deal work for a landowner willing to tie up property for half a century.
Not every ground lease ends in reversion. Depending on the original agreement, other outcomes are possible:
- Lease renewal, usually with ground rent reset to current land values.
- A purchase option letting the building owner buy the land at a specified price or at fair market value when the term ends.
- A demolition requirement obligating the building owner to tear down the structure and return the land to its original condition.
The expiration clause often matters more than any other provision in the lease. A reasonable purchase option changes the risk profile completely compared to a straight reversion. Anyone evaluating a land lease property should read the expiration terms first and the rest second.
Financing a Land Lease Property
Mortgages on land lease buildings are harder to get than on fee simple properties, and the remaining lease term drives most of that difficulty. Lenders want the lease to outlast the mortgage by a comfortable margin. A building with 70 years left on its ground lease finances more easily than the same building with 25 years remaining. As the lease shortens, loan options narrow and borrowing costs climb. The building’s resale value tracks the same curve downward, because future buyers face the same shrinking runway.
Subordinated Versus Unsubordinated Leases
Lenders also care about whether the ground lease is subordinated. In a subordinated ground lease, the landowner pledges their fee interest in the land as part of the mortgage security, so the lender’s lien covers both the building and the ground. In an unsubordinated ground lease, the landowner does not pledge the fee interest, and the lender’s security is limited to the leasehold.
Subordination makes financing easier and typically produces better loan terms for the building owner, while loading more risk onto the landowner. Unsubordinated leases protect the landowner but push risk onto the building owner and lender, which shows up as higher interest rates and stricter underwriting. Some loan programs refuse unsubordinated structures outright. Freddie Mac, for example, does not permit unsubordinated ground leases for its small balance loan program.1Freddie Mac. Ground Lease Mortgages – Multifamily Seller/Servicer Guide
Risks Worth Stress-Testing Before Buying
The headline risk is simple: your money is going into a building on someone else’s land, and the value of that building declines as the lease winds down. An 80-year leasehold and a 15-year leasehold on the same structure are not the same asset, and the market prices them accordingly.
Default on ground rent is a separate exposure, and it’s severe. If the building owner falls behind, the landowner has the right to terminate the ground lease. Termination doesn’t just mean losing the right to occupy the land. It means losing the building, because the structure reverts to the landowner on termination. For an owner who has sunk real money into construction or renovations, a default-triggered termination can wipe everything out.
The landowner’s own financial health matters too. If the landowner defaults on a mortgage secured by the land, or if the land is caught up in a legal judgment, the leasehold can be threatened. Well-drafted ground leases include protections against this; not every ground lease is well-drafted.
For individual buyers purchasing a condo or co-op unit in a land lease building, the appeal is a lower purchase price than equivalent fee simple units. Whether that discount compensates for the risks depends on three things: how many years remain on the lease, how ground rent escalates, and what the expiration clause says.
Why These Buildings Exist
Ground leases persist because they solve real problems on both sides. Landowners who want to keep long-term ownership of appreciating land while generating income find the structure attractive. Institutional landowners, government agencies, and families with generational wealth often prefer leasing to selling, because the land keeps appreciating under their ownership while producing rent.
For developers, a ground lease can make a project financially viable that would otherwise never pencil out. In markets where land prices consume a large share of total project cost, leasing the ground frees up capital for construction. For individual buyers, the trade is a cheaper way into a building and neighborhood that might be out of reach as fee simple. The arithmetic works, but only if the lease terms are read carefully and the long-term numbers are run honestly.