Tenant Improvement (TI) Allowance Calculator
Calculate your tenant improvement budget, out-of-pocket costs beyond the landlord allowance, and the amortized cost per month over your lease term.
What Is a Tenant Improvement Allowance?
A tenant improvement (TI) allowance is a dollar amount per square foot that the landlord contributes toward customizing the leased space to the tenant's specifications. It is one of the most significant financial components of a commercial lease negotiation, often representing $50,000 to $500,000+ in landlord-funded build-out for a mid-sized office or retail space. The TI allowance is not free money; the landlord recoups it through the base rent over the lease term, which is why higher TI allowances typically correlate with higher rental rates or longer lease commitments. The gap between the TI allowance and the actual build-out cost is the tenant's out-of-pocket obligation. A $40/sq ft allowance on a space that requires $65/sq ft in improvements leaves the tenant responsible for $25/sq ft ($87,500 on a 3,500 sq ft space). Understanding this gap upfront is critical for budgeting, especially for startups and small businesses where build-out capital competes with operating capital. TI allowances vary dramatically by market, asset class, lease term, and tenant creditworthiness. Class A office in major metros may offer $50-$100/sq ft for a 10-year lease. Suburban office might offer $20-$40/sq ft. Industrial leases often provide minimal TI ($5-$15/sq ft) because tenant requirements are simpler. Second-generation space (previously built-out) typically commands lower TI because the base infrastructure already exists.
How to Use This Calculator
Enter Your Space Size and TI Allowance
Input the leasable square footage from the lease proposal and the TI allowance offered by the landlord (found in the Letter of Intent or lease term sheet). If the landlord has offered a total dollar amount instead of per-square-foot, divide by your square footage to get the rate.
Estimate Actual Build-Out Costs
Get contractor bids or use industry benchmarks. Typical ranges (2025): basic office build-out $30-$50/sq ft, mid-range office $50-$80/sq ft, high-end office $80-$150/sq ft, medical/dental $100-$200/sq ft, restaurant $100-$250/sq ft. Include architectural and engineering fees (typically 5-12% of construction cost) in your estimate.
Set Your Lease Term
Longer lease terms justify higher TI allowances because the landlord has more years of rent to recoup the investment. If you need more TI, consider extending the lease term. The amortized cost shows your out-of-pocket spread over the lease, which helps compare against alternative spaces with different TI and rental rate combinations.
Negotiate the Gap
If the TI allowance falls short of your needs, negotiate: request a higher allowance in exchange for a longer term or slightly higher base rent, ask the landlord to fund the excess as an amortized lease component (added to monthly rent), or reduce scope by deferring non-essential improvements to later phases.
Key Concepts
Build-to-Suit vs. TI Allowance
In a build-to-suit, the landlord constructs the space to the tenant's specifications and builds the cost into the rent. A TI allowance gives the tenant a budget to manage the build-out directly. Build-to-suit offers more landlord control and potentially lower contractor costs; TI allowances give tenants more design flexibility.
Amortized TI
When the tenant's build-out cost exceeds the TI allowance, the landlord may fund the excess and add it to the base rent as an amortized charge (typically at 7-10% interest). This reduces upfront cost for the tenant but increases monthly rent. The amortization rate should be explicitly stated in the lease.
Shell Condition vs. Second-Generation
Shell condition (first-generation) space is raw: concrete floors, no ceilings, no partitions, basic HVAC. Build-out from shell costs $60-$150/sq ft. Second-generation space has previous tenant improvements in place (flooring, ceilings, some walls). Repurposing second-gen space typically costs $20-$50/sq ft, significantly reducing TI requirements.
TI Clawback
A lease provision requiring the tenant to repay unamortized TI if they terminate the lease early. On a $200K TI allowance with a 10-year lease, leaving after year 5 might trigger a $100K clawback. Negotiate the specific terms and ensure the repayment schedule is clearly defined in the lease.
Expert Insights
The TI Allowance Is a Negotiation Tool, Not a Fixed Number: Landlords in tenant-favorable markets (high vacancy) routinely offer 20-50% more TI than their initial proposal to secure quality tenants. In a market with 15%+ vacancy, push hard for additional TI, free rent, and below-market escalation. The landlord's cost of vacancy (lost rent plus re-leasing commissions) far exceeds the incremental TI cost, giving you significant negotiating leverage.
Manage the Build-Out Like a Construction Project: When you control the TI spend (rather than a landlord build-to-suit), you are effectively managing a construction project. Get multiple contractor bids, require lien waivers, hold 10% retainage, and build in a 10-15% contingency. TI projects routinely exceed initial budgets by 15-25% due to unforeseen conditions (asbestos, plumbing issues, code compliance), and the landlord typically does not cover overages beyond the allowance.
Value Engineering Saves Real Money: If the TI gap is significant, work with your architect on value engineering before cutting scope. Using carpet tile instead of broadloom ($3-$5/sq ft savings), open ceiling with painted ductwork instead of drop ceiling ($5-$8/sq ft savings), and standardized office sizes instead of custom dimensions (reduced framing cost) can save 15-25% of build-out cost without meaningfully compromising functionality.
Frequently Asked Questions
Results are estimates for educational purposes only. Actual amounts may vary based on your specific financial situation, market conditions, and other factors. This calculator does not constitute financial advice.
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