A tenant improvement allowance is a number in the lease. Controlling the build-out it pays for is a project — scope, drawings, draws, and a delivery condition everyone agreed to before the first wall came down.
Key takeaways
A tenant improvement allowance answers one question — how much money is the landlord contributing — and leaves a second, much bigger one unanswered: who is actually running the build-out, and what happens if it goes over budget, runs late, or doesn't match what either side thought they agreed to. The allowance is a lease term. Controlling the project it funds is a different job.
A tenant improvement allowance is “a cash contribution from the landlord toward the cost of building out the space,” and the lease should specify exactly how it moves: typically paid as a lump sum, in installments, or applied directly to contractor invoices. Each method shifts who carries the float. A lump sum up front puts the landlord's money at risk before a nail is driven. Progress installments tied to inspected milestones put the tenant's contractor on a cash-flow leash. Direct-to-invoice payment keeps the landlord closest to where the money actually goes, at the cost of more administrative overhead on every draw.
The other delivery mechanism in the same family is Landlord's Work — the landlord delivers a ready-to-occupy unit built to specifications set out in a lease schedule, rather than handing the tenant cash and a set of instructions. Where the line sits between the two has to be explicit in the lease before the project starts, because a scope item that falls in the gap between “the landlord was supposed to do this” and “the TI allowance was supposed to cover this” is exactly the kind of dispute that surfaces at handback, when it's most expensive to fix.
A fixturing period is the window at the start of the lease when a tenant can build out and prepare to open, typically without paying base rent, and rent commencement is usually pegged to whichever comes first: the end of that window, or the date the tenant actually opens. That makes the fixturing period a hard deadline for the build-out, not a soft target — every week the contractor runs over is potentially a week the tenant now pays rent on a space that still isn't trading. How that date actually gets set should be confirmed before the construction schedule is finalized, not after.
Build-out control points
Draw conditions. Tie each allowance payment to an inspected milestone or a lien-free progress certificate, not a calendar date.
A capped scope, in writing. Attach the approved drawings and a finishes schedule to the lease itself, so “what was agreed” isn't a matter of memory at handback.
A clawback clause tied to the amortization term. If the landlord fronts the allowance and the tenant leaves early, the lease should specify how the unamortized balance is recovered — and that number has to be recomputed from the actual schedule, not assumed.
A hard stop tied to the fixturing period. Build in a check-in well before the fixturing period ends, so a slipping schedule is a landlord's problem to manage, not a surprise on the rent-commencement date.
Because a build-out is construction work, an Ontario TI project is caught by the same statutory machinery as any other job under the Construction Act, regardless of the fact that a landlord's allowance — not a mortgage draw — is funding it: “every payer must hold back ten per cent of the value of the work as it is done or certified,” and since 1 January 2026 that accrued holdback must be released annually rather than sitting on the payer's books at their option. On a multi-month fit-out spanning a contract anniversary, that annual release obligation lands squarely inside the project's own draw schedule, and a landlord administering allowance payments through a general contractor should build it into the draw conditions rather than discover it at project close.
A 4,500 sq. ft. unit carries a TI allowance of $32.00/sq. ft. — $144,000.00 — paid in three installments tied to inspected milestones. The tenant's actual build-out comes in at $168,000.00, a $24,000.00 overage the tenant covers directly, which is a normal and expected outcome: the allowance is a contribution, not a cap on what the tenant is allowed to spend.
The lease amortizes the $144,000.00 allowance straight-line over the 7-year term, giving a monthly amortization of $1,714.29. The tenant leaves after 3 years (36 months), having amortized $61,714.29 of the allowance through rent paid to date. The unamortized balance — $82,285.71, or 57.1% of the original allowance — is what the clawback clause recovers on an early exit. That figure only holds because it was recomputed from the lease's own numbers; assuming a round fraction like “about half” would have understated what was actually owed.
Usually the tenant, subject to the landlord's approval rights over the contractor, the drawings, and any work that touches base building systems — confirm which approvals the lease actually reserves to the landlord before the tenant signs a construction contract, since retrofitting approval rights after work starts is far harder than confirming them up front.
That depends entirely on what the lease says. Some leases extend the fixturing period for landlord-caused delay only; others start base rent regardless of whose fault the delay was. The rent-commencement mechanics should be checked before assuming either answer.
Only if the lease says so, and most don't. An allowance is typically a reimbursement mechanism for actual build-out costs, not a cash entitlement — an unused balance most often simply lapses rather than converting to a rent credit or a payment to the tenant.
The holdback obligation under Ontario's Construction Act runs to whoever is the payer on the construction contract for the work being certified, so it can apply to the landlord's allowance-funded portion, the tenant's own overage-funded portion, or both, depending on how the contract and payment certificates are structured. That's a question for the contract documents on a specific job, not a default answer — confirm who is the payer of record before assuming the 10% doesn't reach the tenant-funded piece.
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