A tenant improvement allowance is the money a landlord puts toward building out the space you lease, and the size of your ask shapes your rent, your term and your cash at move-in. Here is what it pays for, what moves the number, how to size the ask, and where Inland Empire tenants stand.
Reviewed by Robert Mendieta Jr., CCIM — Associate Broker · Commercial Division · DRE #01422904
Last updated: October 3, 2026
What Is a Tenant Improvement Allowance?
A tenant improvement allowance (TIA, or TI allowance) is the dollar amount a landlord contributes toward building out your leased space, usually quoted per square foot. It may fund all of the work or only part of it, and it is negotiated alongside rent, term and free rent in the letter of intent.
Tenant improvements are the physical changes made for a specific occupant, such as walls, flooring, HVAC and lighting, and the allowance is one of the most heavily negotiated economic terms in a commercial lease. It is proposed at the letter of intent stage of leasing commercial property. The mechanics then land in a work letter, the lease exhibit that sets scope, amount, payout and deadlines.
Key Takeaways
- An allowance is not your cost. It pays for construction. Unattached furniture and equipment usually sit outside it, and cabling, AV and soft costs need their own budget lines unless the lease covers them.
- No approved source publishes a reliable Inland Empire TI benchmark, so Apex quotes none. Term, tenant credit, the space’s condition and market leverage set the number.
- Size your ask from a priced, all-in build-out budget, not a rule of thumb.
- Generous TI is repaid through rent and term. Compare offers on effective rent.
- Inland Empire industrial tenants still hold leverage, but CoStar sees market fundamentals potentially strengthening, with rents forecast to rise again in 2027.
What Does a TI Allowance Cover — and What Doesn’t It?
A TI allowance typically pays for permanent tenant improvements that stay with the building: walls and ceilings, electrical, lighting and HVAC work, and flooring and finishes. It typically doesn’t pay for movable furniture and equipment or your operating costs.
| Typically covered | Typically not covered |
|---|---|
| Walls, ceilings and layout changes | Movable furniture and equipment (FF&E) |
| Electrical, lighting and HVAC work | Utilities and other operating costs |
| Flooring and finishes | Cabling, A/V and design fees, unless the lease names them |
The bigger trap is total project cost. A construction bid prices the build-out itself; design and permit fees, data and security cabling, A/V equipment and FF&E are separate budget lines that a construction-only allowance leaves uncovered. If you need design fees or cabling covered, the lease has to say so.
What sets the numberHow Much Tenant Improvement Allowance per Square Foot Is Typical?
There is no reliable typical figure to quote for the Inland Empire. The CoStar market reports behind Apex’s market analysis include no TI allowance average, and no approved source publishes a reliable Inland Empire or Coachella Valley TI benchmark, so Apex quotes none. What you can build is the case for your number, and four factors move it. For how the square footage behind a per-foot allowance is measured, see our guide to rentable vs. usable square feet.
| What moves the allowance | Points to more TI | Points to less TI |
|---|---|---|
| Firm lease term | A longer commitment, which gives the landlord more years to earn the dollars back | A short term or an early termination right |
| Tenant credit | Strong financials or a solid guarantee | A new or thinly capitalized business |
| Condition of the space | A shell, or space that needs a full build-out | Second-generation space that already fits your plan |
| Market leverage | High availability and common concessions | A tight market with few alternatives |
Read this before you quote a number. A national average, even a credible one, says little about a specific Inland Empire building. Apex negotiates each allowance against the tenant’s alternatives, and that holds for local industrial and retail allowances too.
How Much Should You Ask For? Start With Your Build-Out Budget
Ask for an allowance sized to your real, all-in build-out estimate. Whatever the landlord doesn’t fund comes out of your capital.
Build-out costs are specific to the building and the plan, so no national cost average will size your ask. Get a priced bid for this space, ask whether it carries a contingency and what it leaves out, and expect second-generation space that already fits your layout to need less work than a full build-out.
- Test-fit the space before you sign the LOI.
- Price the hard costs with a contractor, in this building.
- Add everything else: design, permits, cabling, AV and furniture.
- Check total occupancy cost: rent, CAM charges and your own contribution.
Hypothetical example · not a market figure
A 5,000-square-foot suite. The landlord offers $40 per square foot, or $200,000; your contractor prices the plan at $55, or $275,000. The gap is $15 per square foot, $75,000, before furniture and cabling.
TI Allowance vs. Turnkey Build-Out vs. Amortized TI
Choose a stated allowance for control, a turnkey build-out to shift overrun risk to the landlord, and amortized TI when you need more than the landlord will give outright.
| Question | Stated TI allowance | Turnkey build-out | Amortized TI |
|---|---|---|---|
| Who builds | Usually the tenant | Landlord, to an agreed plan | As negotiated |
| Who pays overruns | Tenant, above the cap | Landlord, within scope | Tenant, through added rent |
| Effect on rent | Priced into rent and term | Priced into rent and term | Extra rent at an agreed rate |
| Best when | You want control | You want a fixed move-in cost | Build-out exceeds the allowance |
None of it is free money. Landlords earn back build-out dollars through rent and term, which is why a bigger allowance usually comes with a longer commitment, a higher rent or both. Your commercial lease type decides how the rest of the cost is split.
Hypothetical example · amortizing the gap
Amortize that $15 gap over 60 months at a hypothetical 8% rate and rent rises about $0.3041 per square foot per month, roughly $3.65 a year. You repay about $18.25 per square foot for $15 borrowed.
Free Rent or a Bigger TI Allowance: Which Is Worth More?
Take the bigger TI allowance when you need the build-out and free rent when the space already works. Compare both on effective rent over the whole term.
Effective rent is what you actually pay on average over the term once concessions such as free rent and TI are factored in, and it is the right number for comparing proposals; see our glossary entries on effective rent and concessions. Expense structure matters too: a modified gross lease and a triple net (NNN) lease at the same rent are different deals.
Hypothetical example · simplified, undiscounted
A 60-month lease at $2.00 per square foot per month. Three months free drops effective rent to $1.90, a concession worth $6.00 per square foot. Add a $40-per-square-foot allowance and the landlord’s net effective rent falls to about $1.23. The allowance is worth far more, but only if you need the build-out, and landlords price it into rent.
How Much Leverage Do Inland Empire Tenants Have Right Now?
In industrial, tenants have meaningful leverage for now, but CoStar sees market fundamentals potentially strengthening and forecasts rents rising again in 2027, which argues for negotiating sooner.
Local evidence · Apex’s analysis of CoStar data, Inland Empire industrial, Q3 2026
Availability is 12.5%, a 15-year high, and one to several months of free rent is common on new, larger leases of five years or longer. The triple-net asking rent average for available space trends about 25% below its 2023 peak, and with concessions, effective rents are up to 40% lower, depending on location, size and vintage. CoStar cites a 223,000-square-foot Fontana lease with 6 months free.
None of those are TI figures. CoStar says leverage remains with occupiers, but the minimal amount of development due in the coming year signals potential strengthening of market fundamentals, and its forecast has vacancy, 8.7% today, falling to 8% in 2027. See our Inland Empire industrial market page.
In retail, CoStar puts availability at 6.6% (Q3 2026) and says landlords’ ability to push market pricing higher is limited. See the Inland Empire retail market. Office is tight: CoStar puts Inland Empire office vacancy at just 4.7% (Q3 2026), well below the 13.7% national average. No approved source publishes local office TI figures; the Inland Empire office market page covers conditions.
NegotiationHow to Negotiate a Better Tenant Improvement Allowance
Price the build-out first, ask in the LOI, and define what the money can pay for. A clear allowance paid on time beats a bigger one hedged with conditions.
- Trade term for dollars. Longer commitments are what landlords want.
- Define eligible costs. Name soft costs and cabling if you need them.
- Fix the payout. The work letter should state timing and what happens to unused dollars.
- Check the landlord can pay. Ask how the allowance will be funded, and have your attorney review your remedies if it isn’t paid on time.
- Consider second-generation space. Reuse costs less, so you need less allowance.
The allowance is one of the most heavily negotiated economic terms in a commercial lease. That is the case for tenant representation: someone on your side pricing the build-out and negotiating the work letter. For negotiating this at your next option period, see our guide to commercial lease renewal.
TaxIs a Tenant Improvement Allowance Taxable?
It depends on the space and the deal. The federal exclusion written for tenants is narrow.
Under 26 U.S.C. § 110, a tenant’s gross income excludes a construction allowance received under a short-term lease of retail space for improvements that revert to the landlord when the lease ends, and only up to the amount actually spent on them. Short-term means 15 years or less, and retail space means space used to sell goods or services to the public, so office and industrial tenants should not assume it applies. Interior tenant improvements may also be 15-year qualified improvement property under IRS Publication 946.
Important: Apex is not a law, tax or accounting firm. Talk to your attorney and CPA before relying on any tax or lease-accounting treatment.
Tenant Improvement Allowance: Frequently Asked Questions
What is a tenant improvement allowance?
It is the dollar amount a landlord contributes toward building out a tenant’s leased space, usually quoted per square foot. It may fund all of the work or only part of it.
What is a typical TI allowance per square foot?
There is no reliable typical figure for the Inland Empire: the CoStar market reports Apex uses include no TI allowance average, and no approved source publishes a local benchmark. Each allowance is negotiated deal by deal, driven by lease term, tenant credit, the condition of the space and market leverage.
Do you have to pay back a tenant improvement allowance?
Not directly in a standard deal, but landlords recover it through rent and term. Dollars above the standard allowance can be amortized, repaid as added rent at an agreed rate.
What is the difference between a TI allowance and a turnkey build-out?
With a TI allowance, the landlord contributes a capped amount and the tenant usually manages construction and pays overruns. With a turnkey build-out, the landlord delivers finished space to an agreed plan and carries the overrun risk.
Can a TI allowance be used for furniture or cabling?
Furniture usually not; cabling only if the lease says so. Allowances usually exclude unattached furniture and equipment, and an allowance limited to construction won’t reach cabling or AV. Name them in the LOI if you need them covered.
Is it better to ask for free rent or a higher TI allowance?
It depends on whether you need the build-out. Both are concessions, so compare offers on effective rent over the full term.
Is a tenant improvement allowance taxable income?
It can be. Federal law excludes it from a tenant’s income only for retail space on a lease of 15 years or less, for improvements that revert to the landlord, and only up to the amount spent. Apex is not a tax firm, so confirm the treatment with your CPA.
Free CRE consultGet Your TI Ask Right Before You Sign the LOI
Bring the proposal or the contractor bid. Robert Mendieta Jr., CCIM, with more than 20 years of commercial real estate experience, will price your build-out and negotiate the allowance with you.
Call Robert: (951) 977-3251Or request a free CRE consult below.
Sources
- CoStar · Inland Empire Industrial, Retail and Office Market Reports · Q3 2026, dated September 30, 2026 (Apex’s analysis of CoStar data)
- U.S. Code (Cornell LII) · 26 U.S.C. § 110 · current code; IRS · Publication 946 · 2025
- Apex Real Estate Services · glossary, tenant representation and leasing guide pages · September 2026
Hypothetical examples use illustrative inputs, not market figures. Robert Mendieta Jr., CCIM · Associate Broker · Commercial Division · DRE #01422904 · Apex Real Estate Services · 3750 E. Florida Ave Suite A, Hemet, CA 92544 · (951) 977-3251.