A turnkey buildout is a commercial lease arrangement in which the landlord designs, permits, constructs, and pays for the tenant's interior improvements, then delivers a finished, move-in ready space at its own cost and risk. The tenant turns the key and occupies, without managing construction or absorbing cost overruns.
How a Turnkey Buildout Works
A turnkey buildout is executed entirely by the landlord, who takes on design, permitting, construction management, and the full construction cost. The tenant agrees on a specification and a delivery date, then receives finished space. Unlike a capped allowance, the landlord bears any overrun above its budget, because the obligation is to deliver, not to fund a fixed sum.
The mechanics run through the lease and its work letter. The parties attach an agreed specification, often a set of plans, a finish schedule, and a defined scope, so the standard of delivery is not left to argument. The landlord then hires and controls the general contractor, carries the construction risk, and completes the space to that specification by the delivery date.
Because the landlord funds the work, the cost is recovered through the rent. The landlord underwrites the buildout as capital it will amortize over the lease term, so a richer turnkey specification tends to translate into a higher base rent, a longer term, or both. The tenant trades control over materials and vendors for a fixed rent and a fixed delivery obligation.
Why a Turnkey Buildout Matters
A turnkey buildout is a risk-allocation decision as much as a construction method. It matters because it moves cost-overrun exposure, schedule risk, and construction management off the tenant and onto the landlord. For a credit tenant with no construction staff, that certainty can be worth more than the flexibility a cash allowance provides.
The dollars involved are large enough to change a deal. CBRE reported that the average U.S. office tenant improvement allowance fell to $87.51 per square foot in 2024 from $97.55 in 2023, and buildout budgets of that size are exactly what a turnkey structure puts on the landlord's balance sheet rather than the tenant's. When construction bids come in above budget, the party holding that risk absorbs the difference.
The quotable point for an operator: a true turnkey buildout is a fixed-cost promise to the tenant and a variable-cost risk to the landlord, so the party that controls the contractor is the party that pays when the numbers move.
Example
A turnkey buildout example is clearest when set against a capped allowance on the same space. Consider 10,000 square feet with a construction budget of $80.00 per square foot, or $800,000, where actual construction comes in at $95.00 per square foot, or $950,000. The table shows who absorbs the $150,000 overrun.
Item | Turnkey buildout | TI allowance capped at $80.00 per SF |
|---|---|---|
Budget or allowance | $800,000 delivery standard | $800,000 cash cap |
Actual construction cost | $950,000 | $950,000 |
Overrun | $150,000 | $150,000 |
Who pays the overrun | Landlord | Tenant |
Tenant out-of-pocket | $0 | $150,000 |
Under the turnkey structure, the landlord delivers the agreed space and eats the $150,000. Under the capped allowance, the tenant covers every dollar above $800,000, so a bid that runs 18.75% over budget becomes a $150,000 tenant expense. Same space, same cost, opposite exposure.
Variations and Edge Cases
A turnkey buildout is not always a true turnkey. The most common trap is a "turnkey allowance," which caps the landlord's spend at a fixed dollar figure and pushes any excess back to the tenant, defeating the risk transfer the label implies. Scope definition, change orders, and delivery standards drive the remaining variants.
Variant | Treatment |
|---|---|
True turnkey | Landlord delivers to spec at its own cost, absorbs all overruns |
Turnkey allowance | Landlord caps spend at a set dollar figure; excess is the tenant's, not a true turnkey |
Tenant change orders | Upgrades or scope changes above the agreed spec are typically billed to the tenant |
Undefined specification | A "turnkey" with no attached plans invites disputes over finish level at delivery |
Delivery standard | Lease should tie completion to substantial completion and a defined delivery date |
The recurring mistake is signing to the word "turnkey" without an attached specification. If the plans and finish schedule are not defined in the lease or its work letter, the landlord and tenant can disagree over what finished means, and the risk transfer the tenant assumed it bought becomes negotiable.
Turnkey Buildout vs Tenant Improvement Allowance
A turnkey buildout is often confused with a tenant improvement allowance, but they allocate risk in opposite directions. A turnkey buildout is the landlord delivering finished space at its own cost and absorbing overruns. A tenant improvement allowance is a capped cash contribution that the tenant spends and manages, with every dollar above the cap paid by the tenant.
The distinction is control and overrun risk. In a turnkey buildout the landlord controls the contractor, the timeline, and the budget, so the landlord pays when costs exceed plan. With an allowance the tenant selects contractors and finishes and manages the job, gaining flexibility and creative control while taking on the risk that construction runs over the capped amount.
Frequently Asked Questions
Who pays for cost overruns in a turnkey buildout? In a true turnkey buildout, the landlord pays for cost overruns. The landlord agrees to deliver finished space to an agreed specification at its own cost, so if construction bids come in above the landlord's budget, the landlord absorbs the difference. The tenant's obligation is fixed rent, not a construction budget.
Is a turnkey buildout the same as a turnkey allowance? No. A true turnkey buildout obligates the landlord to deliver finished space at its own cost with no cap. A turnkey allowance caps the landlord's contribution at a fixed dollar figure and shifts any excess to the tenant. The two look similar in a listing but allocate overrun risk to opposite parties.
Should a turnkey buildout include a specification in the lease? Yes. A turnkey buildout should attach a defined specification, usually plans and a finish schedule, to the lease or work letter. Without it, the standard of delivery is open to dispute, and the tenant loses the cost and quality certainty that a turnkey structure is meant to provide.