Tenant Improvement Allowance Explained: Who Pays for What

24 Oct Tenant Improvement Allowance Explained: Who Pays for What

If you’re leasing commercial space in Denver, the tenant improvement allowance is where most of the real negotiation happens — not the base rent rate everyone fixates on. A TI allowance is the amount a landlord contributes toward building out your space, usually expressed as dollars per square foot. Get the number and the terms wrong, and you can end up writing a check for thousands of dollars in overages you never saw coming, or stuck with a build-out that doesn’t match how your business actually operates. We’ve managed tenant improvement projects across the metro area for restaurants, medical offices, retail shops, and professional services, and the same questions come up on nearly every job: who pays for what, when does the money actually show up, and what happens if the project runs over budget.

What Exactly Is a Tenant Improvement Allowance?

A tenant improvement allowance, or TI allowance, is a dollar amount a landlord agrees to pay toward the cost of customizing a leased space for a tenant’s use. It’s negotiated as part of the lease and typically shows up as a per-square-foot figure — for example, $35 per square foot in a 3,000-square-foot suite works out to a $105,000 allowance. The landlord isn’t doing this out of generosity. A well-built-out space is easier to lease, commands higher rent, and keeps tenants in place longer, so the TI allowance is really a shared investment in the asset.

Is a TI Allowance the Same as “Landlord Work”?

No, and this distinction trips up a lot of first-time commercial tenants. “Landlord work” means the landlord hires the contractor, manages the build-out, and delivers a finished space to you. A TI allowance means the landlord gives you money (or credits it against costs) but you — the tenant — typically select and manage the contractor, subject to landlord approval. Which structure you end up with depends heavily on your leverage in negotiation, the size of the deal, and whether the landlord has an in-house construction team. In Denver’s current market, mid-size tenants in office and retail space most often see the allowance structure, since it gives the tenant control over design and vendor selection.

How Is a Tenant Improvement Allowance Calculated?

There’s no fixed formula — it’s a negotiated number based on lease length, tenant credit, deal size, and the condition of the space at handoff. A longer lease term generally justifies a higher allowance, since the landlord has more time to recoup the investment through rent. A space delivered as a raw “cold shell” needs a much larger allowance than a space that’s already a “vanilla box” with finished floors, ceiling grid, and basic HVAC distribution.

What TI Allowances Look Like in Denver Right Now

Ranges vary by submarket and building class, but as a general guide for 2026, we’re seeing allowances fall into these bands for common commercial lease types in the Denver metro:

• Class B office, second-generation space: roughly $20-$40 per square foot
• Class A office, new or heavily renovated buildings: roughly $45-$75 per square foot
• Retail shell space: roughly $15-$35 per square foot
• Restaurant or food service build-outs: often $50-$100+ per square foot due to kitchen equipment, grease traps, and ventilation
• Medical or dental suites: often $60-$120+ per square foot due to plumbing, specialized electrical, and ADA-compliant layouts

These numbers are directional, not quotes — actual allowances depend on the specific building, landlord, and lease terms. What matters more than the headline number is understanding what it actually has to cover.

Who Pays for What in a Typical Tenant Improvement Project?

This is where TI allowance disputes actually happen — not at signing, but mid-project when a scope item nobody budgeted for shows up. A clear cost breakdown in the lease or a work letter attached to it prevents most of these arguments before they start.

What Does the Landlord Typically Cover?

The TI allowance usually applies to hard construction costs tied to the space itself: framing, drywall, ceiling grid, standard lighting, flooring, paint, interior doors, and base-building HVAC and electrical modifications. Some landlords also allow a portion of the allowance to be used for soft costs like architectural drawings, permit fees, and project management, though this is often capped at 10-15% of the total allowance.

What Falls on the Tenant?

Tenants generally pay for anything considered above-standard or business-specific: specialty finishes, branded signage, furniture, fixtures, equipment (FF&E), low-voltage data and security wiring, and any upgrade beyond the building standard the landlord has defined. If your allowance is $30/sf and your actual build-out costs $48/sf, you’re responsible for the $18/sf gap — either as a lump sum due before construction starts or rolled into rent as amortized TI, which raises your monthly rent over the lease term to repay the landlord’s extra investment.

Who Owns Leftover Allowance?

If your build-out comes in under the allowance, find out before you sign whether unused funds convert to a rent credit, get forfeited, or can be applied toward other costs like data cabling. Some leases are silent on this, which almost always defaults in the landlord’s favor.

Cost Category	Typically Landlord-Funded	Typically Tenant-Funded
Framing, drywall, ceiling grid	Yes	No
Standard flooring and paint	Yes	No
Base-building HVAC/electrical tie-in	Yes	No
Architectural/engineering drawings	Often, up to a cap	Overage beyond cap
Permit fees	Often, up to a cap	Overage beyond cap
Specialty/above-standard finishes	Rarely	Yes
FF&E and branded signage	No	Yes
Low-voltage/data/security wiring	Rarely	Yes
Kitchen/medical equipment	No	Yes

How Does the Reimbursement Process Actually Work?

Most landlords don’t hand over a check at lease signing. The allowance is typically paid as reimbursement after construction milestones are met, which means the tenant or tenant’s contractor often has to front costs and get repaid.

What Documentation Does a Landlord Require?

Expect to submit a certificate of occupancy or substantial completion, lien waivers from your contractor and subcontractors, final paid invoices, and sometimes a copy of the approved construction drawings showing the work matches what was permitted. Landlords are protecting themselves against funding work that never gets finished or that creates mechanic’s lien exposure on their property, so the paperwork requirements aren’t arbitrary — but they do create a cash-flow gap tenants need to plan for.

How Long Does Reimbursement Actually Take?

Thirty to sixty days after submission of a complete, correct package is typical. Incomplete lien waiver documentation is the single biggest cause of delayed reimbursement we see on tenant-managed projects. Working with a contractor who’s handled TI reimbursement draws before — and who tracks lien waivers and payment applications correctly from day one — avoids most of the delay.

How Should You Negotiate a TI Allowance Before Signing a Lease?

The lease negotiation stage is the only point where you have real leverage. Once you’ve signed, the allowance amount and the rules around it are locked in.

What Should Be in Writing Before You Sign?

• The exact allowance amount and whether it’s per square foot or a lump sum
• What costs qualify as reimbursable and what’s explicitly excluded
• The reimbursement timeline and documentation required
• Whether unused allowance converts to rent credit or is forfeited
• Who owns approval rights over contractor selection and change orders
• A deadline for completing the build-out, since many leases forfeit unused TI after a set period

How Do You Get a More Accurate Picture Before You Negotiate?

Get a preliminary construction estimate before you finalize the allowance number, not after. Walking the space with an experienced tenant improvement contractor in Denver ahead of lease signing gives you real numbers to negotiate with instead of guessing. We’ve seen tenants sign for a $25/sf allowance only to discover their actual build-out runs $40/sf once mechanical and electrical upgrades are factored in — information that would have strengthened their negotiating position if they’d had it earlier. If your space includes a buildout tied to a full office layout, it’s worth reviewing what a complete office build-out typically involves before you lock in lease terms, since scope assumptions baked into a TI negotiation often don’t match what the finished space actually needs.

What Are Common Mistakes Tenants Make With TI Allowances?

Most of the costly mistakes aren’t about the allowance amount itself — they’re about assumptions nobody confirmed in writing.

Which Assumptions Cause the Most Budget Overruns?

• Assuming the allowance covers permit and architectural fees without checking the cap
• Not accounting for ADA upgrades the city may require as part of the permit review
• Underestimating mechanical and electrical costs in older buildings with outdated infrastructure
• Failing to get multiple contractor bids before committing to a scope that exceeds the allowance
• Missing the deadline to use the allowance, which can forfeit remaining funds

Does Building Location Affect TI Costs?

Yes — older buildings and spaces outside Denver’s core submarkets sometimes carry hidden cost premiums tied to aging electrical panels, asbestos abatement in older ceiling tile or flooring, or limited HVAC capacity that requires upgrades before a build-out can proceed. We’ve run TI projects for tenants in suburban submarkets, including recent work detailed on our Thornton tenant improvement page, where infrastructure age played a bigger role in final costs than the finish-out itself. A walkthrough with your contractor before finalizing your TI number should always include a look at what’s behind the walls, not just what the space looks like on the surface.

Frequently Asked Questions

Who typically pays for ADA compliance upgrades in a tenant improvement project?

This depends on the lease, but ADA upgrades required to bring common areas or restrooms into compliance are often a landlord responsibility, while upgrades specific to your suite’s interior layout are usually covered by the TI allowance or the tenant if costs exceed it. Get this spelled out in writing before signing, since ADA work can add significant unplanned cost if it surfaces mid-permit review.

What happens if my build-out costs more than the TI allowance?

You’re responsible for the difference, which is typically handled one of two ways: a lump-sum payment due before or during construction, or an amortized TI arrangement where the landlord covers the overage and recoups it through slightly higher rent over the lease term. Clarify which option applies before you sign, since amortized TI effectively means you’re financing part of your build-out through rent.

Can I use the TI allowance for furniture or equipment?

Usually not. TI allowances are generally restricted to hard construction costs tied to the physical space — walls, flooring, ceilings, and base building systems. Furniture, fixtures, equipment, and signage are almost always tenant-funded separately, though some negotiated leases allow a small percentage of the allowance toward soft costs like design fees.

How long do I have to use a tenant improvement allowance before it expires?

Most leases set a deadline, commonly six to twelve months after lease commencement, after which unused allowance is forfeited. Confirm this date during negotiation and build your construction timeline around it, since permitting delays can eat into that window faster than tenants expect.

Do I need my own contractor, or does the landlord choose one?

It depends on the lease structure. Under a TI allowance arrangement, the tenant typically selects the contractor, subject to landlord approval, while “landlord work” leases have the landlord manage construction directly. If you have the option, selecting your own contractor generally gives you more control over quality, schedule, and how the allowance dollars get spent.

Should I get a construction estimate before negotiating my lease?

Yes. A preliminary estimate from an experienced commercial contractor gives you a realistic cost basis to negotiate a TI allowance that actually covers your scope, rather than accepting a number based on generic per-square-foot assumptions that may not reflect your specific space or business needs.