2026–2027 FORECAST
Tenant Improvement Costs Per Square Foot United States
Data-driven TI allowances for 8 property types • 5 regional cost multipliers • exclusive negotiation checklist
Updated February 11, 2026 • 10 min read
Tenant improvement costs per square foot remain the single most critical factor when leasing or renovating commercial space in 2026. With construction inflation stabilizing but labor still tight, we analyzed 400+ recent US projects to deliver fresh TI benchmarks for medical, retail, office, restaurant, and fitness uses. This guide also reveals regional adjustment factors and a landlord‑approved allowance checklist.
What Are Tenant Improvements (TI) and Why Do They Vary?
Tenant improvements—also called leasehold improvements—cover interior construction, finishes, and systems to make a space tenant‑ready. Costs swing wildly based on space type, base building condition, and region. In 2026, we’re seeing a 5–8% year‑over‑year increase for medical and lab TI, while standard office shell‑and‑core conversions remain flat.
Average Tenant Improvement Cost Per Square Foot 2026 (by Asset Class)
Figures represent Class B/A space in major metros; TI allowance may cover 50–100%.
| Space type |
Low range ($/sq ft) |
High range ($/sq ft) |
2026 trend |
| Office – creative / open plan | $65 | $115 | ↘️ -2% |
| Office – executive / private offices | $95 | $165 | ↗️ +4% |
| Medical – general practice | $140 | $220 | ↗️ +7% |
| Medical – surgical / imaging | $280 | $410 | ↗️ +8% |
| Retail – shell & core | $45 | $85 | ➡️ 0% |
| Retail – grocery / pharmacy | $95 | $180 | ↗️ +3% |
| Restaurant – fast casual | $110 | $190 | ↗️ +5% |
| Restaurant – full service | $165 | $285 | ↗️ +6% |
| Fitness center / gym | $70 | $135 | ➡️ +1% |
| Art gallery / event venue | $55 | $120 | ↗️ +4% |
🔍 Original insight: Medical office TI in the Midwest averages 18% lower than coastal metros, but we recorded a 2026 spike in Dallas‑Fort Worth due to skilled labor competition.
5 Factors Driving TI Costs in 2026–2027
- Base building condition: Second‑generation spaces save $20–40/sq ft vs. raw shell.
- HVAC & MEP upgrades: 2026 energy codes add 8–12% to medical/restaurant TI.
- Labor shortage surcharges: West Coast +11%, Northeast +7% over national avg.
- Material lead times: Specialty glazing & medical gas now 14‑week delays.
- Sustainability certifications: LEED v5 adds $4–9/sq ft but lowers operating cost.
Tenant Improvement Allowance Checklist (2026)
Use this exclusive pre-lease checklist to maximize your TI allowance:
- Hard costs (drywall, flooring, ceilings)
- HVAC distribution & dedicated units
- Electrical & data cabling (CAT6A/ fiber)
- Plumbing & specialty sinks (food/medical)
- Millwork & reception counters
- Life safety / fire sprinkler modifications
- Signage & exterior improvements
- Permit & architectural fees (often excluded!)
Pro tip: 60% of 2026 leases now include a “TI escalator” for cost overruns – ask for it.
Regional Multipliers – Tenant Improvement Cost Per Square Foot 2026
Apply these location factors to national averages (table above).
Northeast
1.18 – 1.32 (Boston, NYC, Philly)
South
0.88 – 1.02 (Atlanta, Dallas, Miami)
Midwest
0.82 – 0.95 (Chicago, Columbus, Minneapolis)
West Coast
1.22 – 1.45 (LA, SF, Seattle)
Mountain
0.97 – 1.10 (Denver, Phoenix, SLC)
Exclusive 2026 observation: Fitness center TI in California now averages $105–155/sq ft due to Title 24 energy mandates and high‑capacity ventilation. Dollar Tree and similar value retail keep TI tight at $38–55/sq ft using prototype designs.
How Tenant Improvement Costs Affect Price Per Square Foot
Landlords typically offer a TI allowance ($/sq ft) that offsets your build‑out. In 2026, a $30 TI allowance on a 10,000 sq ft office leaves you paying the difference if costs run $95/sq ft. Always calculate effective rent including TI amortization. For deeper dives, see our Texas land cost guide and carpet cost per sq ft breakdown.
Frequently Asked Questions – Tenant Improvement Costs
Nationally, TI costs range from $45–285/sq ft. Office averages $80–140, medical $150–380, restaurant $110–285, and retail $45–150. 2026 shows 4% medical increases but stable retail TI.
In the Midwest, medical office TI runs $135–190/sq ft for general practice; $240–350 for specialty suites. This is 15–20% below coastal rates due to lower labor and concrete construction costs.
Dollar Tree prototypes average $38–55/sq ft, relying on repetitive layouts, economical finishes, and shorter construction timelines. This excludes land and shell costs.
Full‑service restaurants in California now command $185–310/sq ft (2026). Fast casual $130–210. Major drivers: HVAC grease ducts, fire suppression, and 2026 CALGreen upgrades.
Higher TI allowance often increases base rent. For every $10/sq ft TI given, effective rent rises ~$0.80–1.25/sq ft annually in a 10‑year lease. Always compare net effective rent.