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Commercial Tenant Improvement Cost Calculator

Build-out cost for office, retail, medical and restaurant space, with plan-review complexity and your local cost level.

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How this Commercial TI estimate works

This tool gives a rough cost range for commercial tenant improvements. It helps business owners and contractors plan budgets for office, retail, medical, or restaurant spaces.

The calculator starts with your space size in square feet. It then applies a base rate based on your use type. Office spaces use a rate of about $150 per square foot. Retail spaces use about $190 per square foot. Medical spaces use about $230 per square foot. Restaurant spaces use about $260 per square foot. Next, it adds a fixed amount for permits and plans. Low complexity adds $3,500. Mid complexity adds $9,000. High complexity adds $18,000. Finally, it applies your area cost multiplier. This adjusts the total for local market conditions. The result is a low and high range. This range helps you see the potential total cost. It also shows the cost per square foot. These numbers are planning estimates only. They do not replace a detailed quote. A local professional should confirm these figures before you sign a lease or contract. Always check local codes and specific site conditions.

What drives the number

  • Space size in square feet sets the base cost.
  • Use type changes the base rate per square foot.
  • Permit and plan complexity adds a fixed fee.
  • Area cost level adjusts for local market prices.
  • Final output shows a low and high range.
  • Estimates are for planning only and need local verification.

Tips before you get bids

  • Measure your space accurately before entering data.
  • Compare multiple local contractor bids for accuracy.
  • Check your lease for any landlord allowances.

Common questions

Is this a final quote?

No, this is a planning estimate. Actual costs vary by location and specific site conditions. Always get a detailed written quote from a local pro.

Why do costs vary by use type?

Different uses have different building code requirements. Restaurants need more plumbing and ventilation than offices. Medical spaces have strict health standards.

What is a cost multiplier?

It adjusts the base cost for your specific area. Some regions have higher labor and material costs. This helps match national averages to local prices.

Can I use this for residential projects?

No, this tool is for commercial spaces only. Residential renovations have different rules and costs. Use a residential calculator for home projects.

Put this Commercial TI calculator on your website

  • Shows your company name, logo and brand color
  • Visitors get an instant estimate and can request a quote
  • Copy-paste embed for most website builders
Own it — $9 one-timeor every calculator for $149Secure Stripe checkout · instant access

Get this Commercial TI estimate configured for your project

Send the details a configured customer form needs so the business can follow up cleanly.