Tenant improvement (TI) projects can make or break your commercial space—and your budget. Whether you're opening a new restaurant, expanding an office, or converting warehouse space into retail, choosing the right contractor determines both your timeline and your bottom line. We'll walk you through what to look for, what to expect to pay, and how to vet local providers.
What Tenant Improvement Actually Involves
TI work encompasses everything from demolition and structural changes to MEP (mechanical, electrical, plumbing) installation, flooring, painting, and final finishes. Unlike standard construction, TI projects are tenant-specific and often happen in leased spaces with strict landlord requirements, code compliance deadlines, and sometimes shared building systems you can't modify freely.
The scope varies wildly. A simple office refresh might run $50–$150 per square foot; a full build-out with new HVAC, electrical panels, and custom layouts can hit $200–$400+ per square foot depending on your market and complexity.
Red Flags When Vetting Contractors
Avoid contractors who won't provide references or insurance details. Ask for proof of commercial liability coverage (minimum $1–2M) and workers' comp. Request at least three recent TI projects they've completed in similar building types.
Be wary of bids that skip site conditions. A honest estimate requires an on-site walkthrough to assess existing conditions, code requirements, and building system compatibility. Ballpark quotes over email are nearly useless.
Watch for vague timelines. "Spring completion" doesn't cut it on a TI project. Reputable firms give you a detailed schedule with milestone dates, permit submission windows, and inspection hold points.
Key Questions to Ask Before Signing
- Do they have experience with your specific building? Some commercial buildings have quirky MEP layouts, asbestos considerations, or landlord approval processes. A contractor familiar with your building saves time and money.
- Who handles permits and inspections? Confirm whether the contractor pulls permits, manages city inspections, and handles code compliance—or if you're responsible. This affects your liability and timeline.
- What's included in the contract, and what's a change order? TI projects almost always hit surprises (hidden walls, outdated wiring, structural issues). Clarify the process and typical costs for change orders upfront.
- Do they carry builder's risk insurance? Your landlord likely requires it. Confirm coverage limits and that the policy covers your specific scope.
Typical Tenant Improvement Timeline
A mid-sized build-out (5,000–15,000 sq ft) usually takes 8–16 weeks from signed contract to occupancy, assuming no major code issues or landlord delays. Here's what to expect:
- Weeks 1–2: Permit preparation, landlord approval, final design sign-off
- Weeks 3–4: Permit review and issuance (varies by jurisdiction)
- Weeks 5–10: Demolition, rough MEP work, framing, and rough inspections
- Weeks 11–15: Finishing work—drywall, flooring, paint, fixture installation
- Week 16: Final inspections and occupancy sign-off
Delays often stem from permit hold-ups or surprise structural issues, not contractor speed. A realistic firm builds in 1–2 week buffers.
How to Compare Quotes Fairly
Get at least three detailed proposals that break down labor, materials, and subcontractor costs separately. Don't automatically pick the cheapest; a bid 20–30% lower than others often signals corner-cutting or hidden change orders down the line.
Compare timeline commitments, warranty terms (typically 1 year for defects), and the contractor's process for handling disputes. If one firm includes project management software access or weekly photo documentation and others don't, that's worth pricing into your decision.
Platforms like Mercoly let you compare and review local Tenant Improvement & Build-Out providers side-by-side, complete with past project photos and verified client feedback, so you're not juggling spreadsheets and email chains.
Frequently Asked Questions
Q: How much contingency should I budget for a TI project? Industry standard is 10–15% above your base bid. TI work almost always uncovers hidden costs (asbestos, electrical upgrades, structural repairs), and having a buffer prevents stalled projects or scope cuts.
Q: Can my contractor start work before permits are approved? Not legally. Starting demo or construction without permits creates liability for you, the contractor, and your landlord. Legitimate firms won't begin until permits are in hand.
Q: What happens if the project runs over budget or timeline? Review your contract's change order process and ask about liquidated damages clauses. Some contracts penalize contractors for delays; others protect them. Get clarity in writing before work starts.
Start comparing vetted Tenant Improvement & Build-Out contractors in your area today to avoid costly mistakes.