Updated 2026-07-11 · By the Tell Projects Team · Office Tenant Improvement Houston TX: Process, Permits & Timeline
Commercial construction is a fundamentally different business from residential work - and Houston commercial projects require a contractor with specific experience navigating the City of Houston Development Services commercial permit process, the International Building Code (IBC) instead of the residential IRC, and the AEC industry standard contracts (AIA A101, A102, A201) that protect owners from the moment you sign. Tell Projects has delivered Houston commercial projects since 2026 - office tenant improvements, restaurants, retail build-outs, medical clinics, warehouse conversions, and ground-up tenant finish-outs ranging from 1,500 sq ft to 75,000 sq ft.
This guide covers what Houston commercial property owners, brokers, and tenants need to know in 2026: the realistic cost ranges per square foot, the permitting differences between the City of Houston and the ETJ municipalities, the specific trade contractors (HVAC, electrical, plumbing) you need to have on the bid list, and the contract documents that protect you when project scope inevitably shifts.
Why Commercial Construction in Houston Isn't Residential Plus
Three structural differences catch Houston investors off guard the first time they hire a residential contractor for a commercial project:
- Code. The International Building Code (IBC) governs commercial. It's denser, more specific, and requires stamped drawings from a licensed Texas architect or engineer for almost every scope of work. The residential IRC - which most Houston remodelers know cold - does not.
- Liability. Commercial contracts typically include indemnification language and require $1M-$2M general liability plus workers' comp with employer's liability limits your residential remodeler may not carry. Many Houston landlords require additional insured endorsements on the COI.
- Pay applications. AIA G702/G703 pay applications are the industry standard. Residential progress payments ('demo done, give the contractor a check') don't fit. Commercial owners expect monthly draws against a stored schedule of values with signed lien waivers.
Hiring a Houston residential remodeler to handle a commercial project is one of the leading causes of cost overruns and schedule slippage we see in the local market. The opposite direction - commercial GCs bidding on home remodels - is also problematic for different reasons.
Commercial Build-Out Scope Types in {pc}
Tenant Improvement (TI) — Most Common
A landlord delivers a 'vanilla shell' (HVAC, electrical service, plumbing stubs, fire sprinkler mains, concrete slab) and the tenant pays for the build-out to their use. TI work is the largest single category of {pc} commercial construction and ranges from cosmetic (paint, carpet, fixtures) to full second-generation buildouts (demolish to slab and rebuild).
Second-Generation Build-Out
Vacant space left by a previous tenant typically needs full demo, new HVAC zoning, new electrical distribution, new plumbing, new life-safety systems. This is the most complex and expensive scope in commercial. {pc}'s office vacancy rate has been elevated 2024-2026, meaning second-generation projects dominate the market.
Specialty Build-Outs
Restaurants need commercial kitchen exhaust, grease traps, and TDSHS health permits. Medical needs HIPAA-compliant infrastructure, negative-pressure rooms, and infection-control specifications. Retail needs high-finish fixtures, lighting, and customer-flow design. Each type has trade-specific expertise that affects cost 30-200% versus vanilla office TI.
2026 Houston Commercial Build-Out Cost by Type
| Use Type | Low $/sq ft | Mid $/sq ft | High $/sq ft | Notes |
|---|---|---|---|---|
| Vanilla shell TI — office | $35 | $55 | $85 | Paint, carpet, fixtures only |
| Second-generation office | $65 | $95 | $140 | Full demo + new systems |
| Restaurant build-out (full kitchen) | $150 | $225 | $350 | Exhaust, grease trap, walk-ins |
| Medical clinic / dental | $120 | $190 | $280 | Medical gas, lead-lined rooms |
| Retail strip-mall | $55 | $95 | $160 | High-finish fixtures, signage |
| Warehouse office build-out | $45 | $75 | $120 | Mezzanines, dock work |
| Boutique fitness / salon | $85 | $140 | $220 | Specialty HVAC, plumbing, finishes |
Houston observed range 2026. Add TI allowance funded by landlord (typically $20-$60/sq ft for Class A office) before calculating tenant out-of-pocket.
City of Houston Commercial Permitting - 2026 Reality
The City of Houston Development Services Department processes commercial permits via the iPermits portal. For Houston addresses, expect:
- Plan review timeline: First review 4-6 weeks; second review 2-3 weeks with resubmittal
- Permit fees: Calculated by valuation; valuation is computed from your signed contract
- Inspections: Daily inspection windows for an active job - schedule 48 hours in advance via the portal
- Certificate of Occupancy: Final, after all TCOs and life-safety sign-off; required before opening for business
ETJ properties
Most Houston commercial projects outside the city limits fall under the City of Sugar Land, City of Pearland, The Woodlands Township, City of Pasadena, or unincorporated Harris County (HCAD). Each has its own portal, fee schedule, and timeline. Tell Projects navigates all of them in-house.
Design and construction documents you'll need
- Signed architectural drawings (Texas architect stamp required)
- Stamped structural drawings for any load-bearing modifications
- MEP drawings (mechanical, electrical, plumbing) stamped by Texas PE
- Life-safety / fire-protection drawings stamped by NICET-certified designer
- Owner acknowledgement of hazardous-materials survey (asbestos, lead) for buildings pre-1980
A Realistic Houston Commercial Schedule
For a 5,000 sq ft second-generation office TI in Houston, the typical 2026 schedule runs:
- Weeks 1-2: Architect selection, base scope / test fits
- Weeks 3-6: Architectural drawings (30%/60%/100%)
- Weeks 5-9: MEP / structural stamped drawings (parallel)
- Weeks 8-13: Permitting first review + revisions
- Weeks 13-14: GC bidding + contract signing
- Weeks 14-16: Long-lead procurement (HVAC units, custom fixtures, glass)
- Weeks 16-18: Demolition
- Weeks 18-22: Rough-in (MEP + framing)
- Weeks 22-24: Inspections + drywall
- Weeks 24-28: Finishes, flooring, paint, fixtures
- Weeks 28-30: Punch list + CO
Total elapsed: 28-34 weeks from kickoff to Certificate of Occupancy for a standard office TI. Restaurant build-outs typically add 4-8 weeks for health department, kitchen equipment lead times, and exhaust-system inspections.
Contracts: AIA Documents That Protect You
Tell Projects uses the AIA (American Institute of Architects) standard document family for Houston commercial contracts. These are the industry norm and have been litigated for 60+ years - so everyone knows exactly what each clause means.
The core documents
- AIA A101 / A102: The contract itself (lump sum or cost-plus)
- AIA A201: General conditions - the legal framework (changes, delays, payments, termination)
- AIA G702 / G703: Pay application format - what your monthly draw request must include
- AIA G715: Supplementary conditions - your project-specific add-ons (insurance limits, security requirements, etc.)
- AIA G732 / G736: Change order forms - the only way scope changes should be documented
The five Houston clauses to negotiate
- Schedule: Substantial Completion date with liquidated damages (typically $200-$1,000/day)
- Change-order markups: Cap contractor markups on owner-initiated change orders at 10-15%
- Retainage: Hold 5-10% of each draw until substantial completion, then reduce or release
- Insurance: GL $1M per occurrence / $2M aggregate; workers' comp per Texas limits; additional insured endorsements for owner and landlord
- Warranty period: 1-year workmanship warranty as standard, plus separate manufacturer warranties on major systems
Frequently Asked Questions
How long does the project typically take from start to finish in Houston?
Most projects in the Houston metro take between 4-12 weeks depending on scope. Cosmetic refreshes can wrap in 2-3 weeks, mid-range remodels average 6-8 weeks, and full gut renovations with structural work often run 10-14 weeks. Permitting timelines at the City of Houston Development Services add 2-6 weeks to the front of the schedule.
Do you handle all permits and inspections, or do I need to pull them myself?
Tell Projects pulls all required City of Houston building, electrical, plumbing, and mechanical permits as the licensed general contractor on file. We coordinate every required inspection through the project and ensure the work passes the City's standards before we consider the project complete.
What does a typical project cost in the Houston market in 2026?
Houston prices have risen 4-7% year-over-year due to insurance, materials, and labor. Concrete project budgeting depends on scope, finish level, and structural surprises uncovered during demolition. Tell Projects provides a written, line-item estimate after the in-home consultation so you know the exact number before contract signing.
Are you licensed and insured to work in Harris County and surrounding municipalities?
Yes. Tell Projects carries Texas Residential Construction Contractor licensing with the City of Houston, an active general liability policy, and workers' compensation coverage that meets or exceeds municipal minimums. We provide COIs on request for HOAs, condos, and commercial landlords.
Can I live in my home during the project?
Most Houston-area projects allow the family to stay in the home, though kitchens and bathrooms generate the most disruption. For full kitchen remodels we typically set up a temporary kitchenette in the garage, dining room, or adjacent living area with a microwave, induction plate, mini-fridge, and Keurig. For bathroom remodels we sequence so at least one bathroom remains functional whenever possible.
What warranty do you provide on the work?
Tell Projects provides a written one-year warranty on workmanship covering installation defects, plus the manufacturer warranty on materials (typically 10 years to lifetime depending on product). Roofing projects receive a separate 5-year workmanship warranty on top of the manufacturer's 25-50 year shingle warranty.
Do you offer design services or do I need a separate architect/designer?
Tell Projects provides in-house design for kitchens, bathrooms, and most residential remodels. For projects requiring stamped architectural drawings (load-bearing wall removal, additions, commercial build-outs) we partner with a licensed Texas architect whose fees are quoted separately and transparently in your proposal.
How do payment schedules work?
Tell Projects uses a milestone-based payment schedule tied to project phases - typically a small mobilization deposit, draws at demolition complete, rough-in complete, drywall complete, and final payment at punch-list closeout. We never request full payment upfront, and we never accept cash. ACH, check, and major credit cards are accepted.
Starting Your Houston Commercial Project
The fastest way to scope a Houston commercial build-out is a 30-minute discovery call followed by a site walk. Tell Projects provides initial feasibility budgeting the same week - including the scope, the timeline, and the hard costs you need to decide whether to move forward.
(832) 203-7987 or use the quote form to set up a discovery call. We work with Houston landlords, brokers, franchisees, and tenants - and we can usually start a feasibility study within 5 business days.