A tenant improvement allowance is money a commercial landlord agrees, in the lease, to put toward building out your leased space so it works for your business. The amount is set on a per-square-foot basis, written into the lease as a binding commitment, and typically paid out as reimbursement once construction is done rather than handed over as a lump sum at signing.
How the Dollar Amount Gets Set
The allowance is quoted as a dollar figure per rentable square foot. For a standard office shell, numbers commonly land between $40 and $60 per square foot, with Class A and trophy buildings in major markets running higher. The specific figure is negotiated during the letter of intent stage and then locked into the lease.
Lease length is the biggest lever. Landlords recover the allowance through the rent you pay over the term, so a ten-year deal generally supports a larger contribution than a five-year one. A bigger allowance often comes with a higher base rent, because the landlord amortizes the improvement cost into monthly payments, sometimes at an implied interest rate in the 6 to 10 percent range. That trade-off matters: a generous allowance can quietly become a loan you repay through rent rather than a reduction in your upfront cost. Run the total occupancy cost both ways before agreeing to a number.
What the Allowance Can Pay For
Allowance funds are meant for hard costs — the physical construction that becomes part of the building. Typical covered items include:
- Interior walls and framing to divide the space into offices, conference rooms, or other functional areas
- Flooring, whether carpet, tile, hardwood, or another permanent covering
- Ceiling work, including suspended grids and acoustic tiles
- Electrical and plumbing work: wiring, outlets, lighting, plumbing lines, and restroom fixtures
- HVAC modifications such as ductwork, vents, and thermostat zoning
Soft costs are the second category. Architectural drawings, structural engineering reports, and building permit fees are standard qualifying expenses. Some leases cap the share of the allowance that can go to soft costs, and a limit around 25 percent is not unusual. If yours has that cap, budget so that design and permitting don’t drain money you’ll need for construction.
What It Won’t Pay For
Trade fixtures — business property you can remove at the end of the lease — sit outside the allowance. The line is permanence. If something is attached in a way that makes it part of the structure, it counts as an improvement. If it unbolts and leaves with you without significant damage, it stays your expense.
Excluded items typically include:
- Furniture and equipment: desks, chairs, workstations, shelving
- Technology infrastructure: computers, servers, phone systems, data cabling
- Security systems: cameras, access control, alarms, unless permanently integrated into the building
- Moving expenses from your prior space
- Exterior signage that isn’t built into the facade
Plan on covering these from working capital or a separate equipment budget.
The Work Letter
The work letter is a binding document attached to the lease that governs the construction. It sets the technical and financial rules for the build-out, and if a dispute arises about quality, timing, or who pays for what, this is the document that decides it.
A well-drafted work letter covers:
- A project budget with a line-by-line accounting of the allowance
- A construction schedule with milestones tied to the lease commencement date and consequences for delays1Securities and Exchange Commission. Exhibit 10.3 – Work Letter
- Contractor selection requirements, including insurance and bonding minimums
- Architectural plans and engineering specifications defining the scope
- Material specifications for finishes such as paint, flooring, and fixtures
- A change order process for pricing and approving mid-construction changes
Many landlords also charge a construction management fee for overseeing the work, usually 3 to 5 percent of project cost. Unless you negotiate it out, that fee comes off the allowance. Check what costs the fee is applied to, and confirm it isn’t sweeping in work that’s really the landlord’s responsibility.
How the Money Actually Reaches You
Landlords rarely release the full allowance upfront. Payment moves through a reimbursement process built to keep construction liabilities off the property.
You submit a draw request with paid invoices, receipts for completed work, and lien waivers from every contractor and supplier involved. A lien waiver is a signed document in which a contractor gives up the right to file a mechanic’s lien against the property for the work that payment covers. Without those waivers, an unpaid subcontractor could put a legal claim on the building, which is a risk no landlord will accept.
The local building department has to issue a certificate of occupancy before the final portion of the allowance is released. Many leases add a retainage clause, holding back 5 to 10 percent of the funds until every item on the punch list is finished. Depending on the lease, the money is either reimbursed to you or paid directly to your contractors.
Overages, Leftovers, and Change Orders
If the build-out costs more than the allowance, you pay the difference. Some leases require you to deposit the estimated overage before construction starts; others let you pay as costs accrue. Either way, the excess is yours. A contingency buffer of 10 to 15 percent in your project budget is a practical safeguard.
Leftover funds are governed entirely by what the lease says. Many agreements use a “use it or lose it” clause, so any unspent allowance reverts to the landlord after a set deadline. Others let you apply the balance as a rent credit or roll it into additional approved improvements. If the lease is silent, assume the landlord keeps it. Address this explicitly in negotiation.
Mid-construction changes run through the change order process defined in the work letter. If the landlord initiates a change that raises cost or pushes the schedule, you shouldn’t bear those added expenses without written consent. Cost savings from changes should be credited back to you, not absorbed. Insist on open-book pricing and the right to review bid documentation so you can verify how the allowance is being spent.
Who Owns the Build-Out at the End
Permanent improvements funded by the allowance — walls, flooring, built-in cabinetry, plumbing, electrical — generally become the landlord’s property when the lease ends. They’re physically integrated into the building, so they stop being personal property and merge with the real estate. That’s true regardless of who paid, unless the lease says otherwise.
Trade fixtures are the exception. Items you installed for your business, like display cases, specialized equipment mounts, or portable signage, can usually be removed at lease end if you paid for them, they aren’t an integral structural element that would be expensive to extract, and removing them doesn’t cause significant damage. Any damage from removal is on you to repair.
Because the landlord ends up owning the permanent work, treat the allowance as funding for space you’ll use during the term, not as an investment you take with you. A build-out designed around highly specialized needs that no future tenant would want can make the landlord less willing to fund it at full value.
Tax Treatment
Retail Tenants on Short-Term Leases
Federal tax law provides one narrow safe harbor. Under 26 U.S.C. § 110, a tenant leasing retail space on a short-term lease of 15 years or less, including renewal options, does not have to count the allowance as gross income, as long as the funds are spent on permanent real property improvements that revert to the landlord when the lease ends.2Office of the Law Revision Counsel. 26 USC 110: Qualified Lessee Construction Allowances for Short-Term Leases Treasury regulations confirm that amounts meeting these conditions are excluded from the tenant’s income entirely.3eCFR. 26 CFR 1.110-1 – Qualified Lessee Construction Allowances
“Retail space” here means property used to sell goods or services directly to the general public; restaurants qualify. The 15-year limit is measured with renewal options included.2Office of the Law Revision Counsel. 26 USC 110: Qualified Lessee Construction Allowances for Short-Term Leases
Office, Industrial, and Longer Retail Leases
Section 110 doesn’t apply to office or industrial tenants, and it doesn’t cover retail leases longer than 15 years. Outside that safe harbor, a cash allowance from the landlord is generally treated as taxable income in the year you receive it. You can offset it by depreciating the improvements you build, but income recognition and depreciation run on different timelines, so year one can hurt. How the allowance is characterized in the lease — cash payment, rent reduction, or landlord-owned build-out — affects the outcome, so raise this with a tax advisor before you sign.
Depreciation
Improvements to commercial interior space generally qualify as qualified improvement property, which carries a 15-year recovery period under the federal tax code.4Office of the Law Revision Counsel. 26 USC 168: Accelerated Cost Recovery System QIP covers interior improvements to a nonresidential building made after the building was first placed in service, but not enlargements, elevators, or escalators. Bonus depreciation may allow a larger first-year deduction, though the available percentage depends on current legislation and has been subject to phase-downs and extensions.
Improvements on leased property are depreciated under the same rules that apply to owned property, starting when the improvement is placed in service.4Office of the Law Revision Counsel. 26 USC 168: Accelerated Cost Recovery System Whether you or the landlord claims the deduction depends on who is treated as the tax owner of the improvements, which turns on the lease terms and who controls the build-out.