By Donny Zanger • Published October 27, 2026 • Updated October 27, 2026
Commercial buildout Chicago projects share one pattern: approvals first, construction second. Most spaces need zoning approval, drawings from an Illinois architect, and a city building permit before work starts. Budget about $50 to $180 per square foot for an office and $200 or more for a restaurant.
A buildout is the work that turns a leased space into your space. It covers walls, ceilings, power, plumbing, HVAC, and finishes. This commercial buildout Chicago guide shows what it costs, which permits apply, how long it takes, and how to hire help.
Article Overview
- Hard costs run $50 to $180 per square foot for offices and $200 to $480 for restaurants. Add 8% to 15% for soft costs and 5% to 10% for contingency.
- The city’s Express Permit Program does not cover the first buildout of a shell, a new food business, or a change of occupancy.
- Clear zoning before you sign a lease. The city advises against signing first.
- A four-week plan-review delay can cost more in rent than a $10-per-square-foot price gap.
- Chicago’s Small Business Improvement Fund can reimburse 30% to 90% of eligible costs in open TIF districts.
What Is a Commercial Buildout in Chicago?
A commercial buildout is construction inside a commercial space to fit one business. Landlords and contractors also call it a tenant improvement, a TI, or a fit-out. The scope runs from new paint and lighting to full demolition and new systems.
The starting condition of the space sets your scope. Landlords deliver space in four common states:
- Cold dark shell: bare structure with no HVAC, power distribution, or plumbing.
- Gray shell: utilities are stubbed to the space. You build the distribution, HVAC, and restrooms.
- Vanilla shell or white box: finished walls and ceiling, HVAC in place, and a working restroom.
- Second-generation space: the last tenant’s buildout. It saves money only if the layout fits your use.
Read the lease for the shell condition before you plan anything else.
Commercial Buildout Chicago: What Does It Cost?
Cost depends on your use, the shell, and the finish level. The table shows July 2026 hard-cost benchmarks from Terrapin Construction Group. They are national ranges for second-generation space. They are not Chicago quotes.
| Use | Hard cost per square foot |
|---|---|
| Office and coworking | $50 to $180 |
| Basic retail | $40 to $90 |
| Mid-tier retail | $90 to $180 |
| Premium retail | $150 to $300 |
| Medical office | $150 to $350 |
| Full-service restaurant | $200 to $400 |
| Quick-service restaurant | $260 to $480 |
Add 8% to 15% for soft costs, such as design and permit fees. Add 5% to 10% for contingency.
Chicago runs above the wider Midwest. The same benchmark puts mid-tier retail here at $95 to $150 per square foot. It cites union jurisdiction on most commercial work. A May 2026 Loop market report says landlord office packages once topped out near $100 to $150. Now they clear $200.
Not every buildout is a gut job. A July 2026 city permit for a 1,650-square-foot Loop retail space listed $80,000 in work. That is about $48 per square foot, for new finishes, lighting, and a fitting room.
Four items often surprise tenants. These are national benchmarks:
- Accessibility upgrades: $15 to $60 per square foot of affected area.
- Electrical service upsize: $35,000 to $180,000 for restaurant, medical, or fitness uses.
- Sprinkler head moves: $4 to $12 per square foot of affected area.
- Grease interceptor: $15,000 to $80,000 for food service.
Ask your contractor to check each item before you sign the lease.
Who Pays: You or the Landlord?
Most leases include a tenant improvement allowance. That is money the landlord puts toward your buildout. Allowances are shrinking. Contractor benchmarks show them down 8% to 15% in core retail markets in early 2026. Chicago office landlords have also pushed back on paying for upgrades.
Benchmark allowances for Q3 2026 look like this:
- Second-generation retail in a Class B center: $15 to $35 per square foot.
- Office on a longer term: $30 to $90 per square foot.
- Restaurant, where the landlord wants a food anchor: $40 to $100 per square foot.
Weigh the allowance and the shell together. A $40 allowance on a cold dark shell can still leave you paying $50 to $90 per square foot. Price the space before you sign the letter of intent.
Which Chicago Permits Does a Commercial Buildout Need?
The Chicago Department of Buildings runs four permit paths. Most commercial buildout Chicago projects land in plan review. Here is how the paths compare:
| Permit path | Best fit | Key limit |
|---|---|---|
| Express Permit Program | Small nonstructural work in an existing space | In a non-residential unit: up to 2,000 square feet, or 500 in assembly use. Drawings from an Illinois-licensed architect or structural engineer. |
| Standard Plan Review | Most tenant buildouts and structural work | Plans go through electronic review. A city project manager coordinates departments. |
| Self-Certification | Eligible projects with an architect of record | The architect certifies code compliance. Liability shifts to the design team and contractor. |
| Developer Services | Large or complex projects | Requires a scheduled intake with the Department first. |
The city’s Express Permit eligibility rules rule out several common buildout cases. You cannot use that path for:
- The first buildout of a space that was never legally occupied, such as a shell or vanilla box.
- A new food establishment or a new food operator.
- A change of occupancy, such as turning an office into an event space.
- Structural work or new interior stairs.
- Work in educational, factory, high-hazard, institutional, or storage occupancies.
Two more rules matter. A general contractor on the permit must hold a City of Chicago license. The Department also checks that listed contractors carry proper insurance.
Watch the clock after approval. You must pay within 120 days of the ready-for-payment notice. For a plan-based permit, you then have 180 days to begin work.
You may also start demolition early. After you upload demolition plans for a Standard Plan Review application, a separate express permit can cover nonstructural interior demolition. It does not work with self-certified or Developer Services applications.
Planning work at a home or condo instead? Read our Chicago renovation permit guide.
What Should You Clear Before You Sign the Lease?
Zoning comes first
The city’s business licensing office tells applicants not to sign a lease until a zoning review confirms the use. It also warns you not to assume the last tenant’s zoning applies to you. Every new license, expansion, and change of location goes through zoning review.
Food service adds a health review
City health staff review plans for a new or remodeled food establishment. That review runs alongside the building permit process. Chicago’s restaurant start-up guide adds another rule. Expect more than 100 people, or want a liquor license? Then you need zoning approval for occupancy capacity signs.
Accessibility and energy codes
Chicago applies its own accessibility chapter in the Chicago Building Code, plus the Illinois Accessibility Code. City code says an alteration cannot reduce accessibility. It also does not demand more than new construction would. New HVAC equipment must meet the Chicago Energy Transformation Code.
How Long Does a Commercial Buildout Take in Chicago?
No single number fits every project. Use this sequence and treat the ranges as estimates:
| Step | Time estimate |
|---|---|
| 1. Lease and zoning check | Finish before you sign |
| 2. Design and drawings | Set by scope. Ask your architect for a schedule. |
| 3. City plan review | 15 to 45 business days for tenant improvements, per permit expediters |
| 4. Corrections | 10 to 20 business days per cycle. Most commercial projects need 2 to 4 cycles. |
| 5. Long-lead equipment | Plan a 90-day buffer for new electrical service |
| 6. Construction | 8 to 16 weeks for retail, 12 to 22 weeks for restaurants |
| 7. Final inspections | Includes the inspections tied to your business license |
Delay costs money. One contractor benchmark finds a four-week plan-review slip costs more in rent than a $10-per-square-foot price gap. Ask for a rent start date that follows your permit date, not your lease date.
The Department of Buildings posts average issuance times for plan-based permits from the past two weeks. Check them before you set your open date.
Can Chicago Grants Help Pay for a Buildout?
Yes, in some districts. The Small Business Improvement Fund, or SBIF, reimburses part of the cost of permanent building improvements. It applies inside designated tax increment financing districts. The grant does not have to be repaid.
The 2025 program rules list grants of 30% to 90% of improvement costs. The maximum is $150,000 for a commercial property with one owner or tenant. Past projects have included interior demolition and buildout, storefront windows, plumbing, electrical, and HVAC work.
Know the catches before you apply:
- SBIF reimburses costs. You pay contractors first.
- You need a current Chicago business license.
- A tenant needs the property owner’s prior written approval.
- Chains and franchises are not eligible.
- Funds open district by district. Past rounds have covered areas such as Pilsen and Lawrence and Pulaski.
Ask SomerCor, the program administrator, about start-of-work rules before you sign a contract.
How Do You Hire the Right Contractor for a Commercial Buildout?
Chicago General Contractor is a referral service. We connect you with licensed, independent contractors for commercial buildout Chicago work. Those contractors do the work, not us. Ask each one these questions:
- Is the general contractor licensed by the City of Chicago?
- Has the contractor handled Department of Buildings permits for your use?
- Is the bid fixed-price or open-ended? What does it leave out?
- Who pulls the permits, and who pays for correction cycles?
- How does the contractor handle the landlord’s rules for work hours and elevators?
Bring the lease, the floor plan, and your target open date to every call. Need help comparing bids? Read our guide on how to choose Chicago renovation contractors.
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Frequently Asked Questions
How much does a commercial buildout cost in Chicago?
Hard costs run about $50 to $180 per square foot for offices and $40 to $300 for retail. Restaurants run $200 to $480. Chicago sits above the Midwest average. Add 8% to 15% for soft costs and 5% to 10% for contingency. A commercial buildout Chicago bid should rest on your drawings.
Do I need a permit for a commercial buildout in Chicago?
Most buildouts do. Work that changes structure, electrical, plumbing, or HVAC needs a permit. Paint and floor finishes alone may not. Confirm your scope with the Department of Buildings before you start.
Can I use the Express Permit Program for my buildout?
Only for small nonstructural work in an existing space. The program excludes the first buildout of a shell, new food establishments, and changes of occupancy. Most full buildouts go through Standard Plan Review.
How long does a commercial buildout take in Chicago?
Permit expediters estimate 15 to 45 business days of plan review for tenant improvements. Construction takes 8 to 16 weeks for retail and 12 to 22 weeks for restaurants. Add design time before both.
What is a tenant improvement allowance?
It is money your landlord contributes toward the buildout. Negotiate it together with the shell condition. A bare shell can erase the value of a large allowance.
Reviewed by Donny Zanger, founder of Chicago General Contractor and BuildWrks, a contractor lead-generation platform. Chicago General Contractor is a referral service. Commercial buildout work described here is performed by independent contractors in our network, not by Chicago General Contractor directly.
Published: October 27, 2026 • Last updated: October 27, 2026
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