Commercial Tenant Improvements in Phoenix: What Business Owners Need to Know Before Build-Out
A clear 2026 guide to TI timelines, permits, costs, landlord work letters, and commercial build-outs for restaurants, breweries, dispensaries, medical offices, retail spaces, and offices.
Call (480) 862-5069Signing a commercial lease in Phoenix is the easy part. Turning four bare walls into a working restaurant, brewery, dispensary, or medical office is where things get complicated — and expensive — fast. That process is called a commercial tenant improvement, or TI, and how well it is planned in the first 30 days almost always decides whether you open on time and on budget.
This guide walks Phoenix business owners and facility managers through what a TI actually involves in 2026: how the process works, what drives cost, how City of Phoenix permitting fits in, and what to watch for in food service, brewery, dispensary, and medical build-outs. It is written from the perspective of a licensed commercial general contractor working in the Valley.
Tenant Improvement vs. Remodel vs. Ground-Up: What You Actually Have
These three terms get used interchangeably in leasing conversations, but they trigger very different scopes, budgets, and permits.
Most business owners moving into a Phoenix retail center, office park, or industrial flex space are doing a TI or a remodel. Knowing which one you are really doing changes the permit path and who needs to be on the design team.
The Phoenix TI Timeline: What to Expect
Here is a realistic timeline for a mid-sized commercial TI in the City of Phoenix. Complex uses like restaurants, breweries, dispensaries, and medical spaces sit at the longer end of each range.
| Phase | Typical Duration | What Happens |
|---|---|---|
| LOI & Lease Negotiation | 2–6 weeks | Letter of intent, work letter, TI allowance, delivery condition, and use clause negotiated with the landlord. |
| Design & Space Planning | 3–8 weeks | Architect and MEP engineers produce a permit-ready set. Owner selects finishes and equipment. |
| Pre-Construction & Bidding | 2–4 weeks | GC finalizes subcontractor pricing, schedule, and value-engineering options. |
| Permit Submittal & Review | 4–10 weeks | City of Phoenix plan review, plus health department, AZDHS, or fire marshal review as required. |
| Construction | 8–20 weeks | Demo, framing, MEP rough-in, inspections, finishes, equipment set, and punch list. |
| Final Inspections & CO | 1–3 weeks | Building final, health/fire sign-offs, and Certificate of Occupancy. |
What Actually Drives Your TI Budget
Two spaces of identical square footage can have wildly different TI costs. The biggest drivers are not usually finishes — they are the mechanical, electrical, and plumbing scope and any specialty requirements tied to your use.
| Cost Driver | Why It Matters |
|---|---|
| MEP Modifications | New HVAC tonnage, electrical service upgrades, and plumbing relocations often outrun finish budgets. Older Phoenix centers frequently need panel upgrades. |
| Kitchen Hoods & Grease Traps | Type I hoods, make-up air, fire suppression, and exterior grease interceptors are among the most expensive single line items in a restaurant TI. |
| ADA & Restroom Compliance | TIs almost always trigger an ADA path-of-travel review. Older spaces may need restroom rebuilds, door hardware changes, and parking upgrades. |
| Fire & Life Safety | Sprinkler head relocations, occupancy load changes, and alarm modifications trigger separate fire submittals and inspections. |
| Specialty Ventilation | Breweries, dispensaries, nail salons, and dry cleaners require dedicated exhaust and make-up air systems beyond standard commercial HVAC. |
| Security & Access Control | Dispensaries and medical spaces have code-driven camera, alarm, and vault requirements that pull in low-voltage subcontractors early. |
| Landlord Delivery Condition | Cold shell, warm shell, and second-generation spaces have very different starting points. Read the work letter closely. |
| Long-Lead Equipment | Rooftop HVAC units, walk-in coolers, and electrical switchgear can add 12–24 weeks if not ordered during design. |
City of Phoenix Permitting: What to Know
Phoenix TIs are permitted through the City of Phoenix Planning & Development Department. Depending on scope, several other agencies may need to sign off before you can open.
- City of Phoenix Building Permit: Required for most interior alterations, framing, MEP, and change-of-use TIs.
- Maricopa County Environmental Services: Plan review and inspection for spaces serving or preparing food, including breweries with tasting rooms.
- Arizona Department of Health Services: Licensing and facility standards for medical, dental, and marijuana establishment build-outs.
- Phoenix Fire Department: Reviews life safety, sprinkler modifications, hood suppression, and hazardous materials for breweries and manufacturing.
- Zoning & Use Verification: Always verify the space is zoned for your use before signing the lease.
Landlord Work Letters and TI Allowance
The work letter attached to your lease is the single most important construction document you will sign before you have a GC on board. It defines what the landlord delivers, what the tenant is responsible for, and how the TI allowance is paid.
- Delivery Condition: Cold shell, warm shell, or second-generation space can completely change your starting point.
- TI Allowance: Understand whether it is paid as reimbursement or direct payment to the GC.
- Approval Rights: Landlords usually approve plans, contractor selection, and insurance certificates.
- Rent Commencement: A slow permit can eat free-rent months quickly if your dates are not negotiated carefully.
Vertical-Specific Notes
Restaurants & Food Service
Restaurant TIs are the most complex vertical in commercial construction. Expect a Type I hood with fire suppression, make-up air, an exterior grease interceptor, a three-compartment sink, hand sinks at every station, and a mop sink. Health department plan review runs in parallel with the building permit. Equipment lead times drive the schedule more than construction does — order early.
Breweries & Tasting Rooms
Breweries combine food service, light industrial, and assembly occupancies in one space. That triggers trench drains in the brewhouse, dedicated exhaust and make-up air, floor slopes and coatings that stand up to caustic cleaning, glycol lines, upsized electrical for chillers and boilers, and TTB federal licensing on top of state and local approvals.
Cannabis Dispensaries & Cultivation
Arizona dispensary build-outs are driven by AZDHS facility rules: limited-access areas, extensive camera coverage with retention, vault construction, and separation between retail, secure storage, and any cultivation or processing. Local zoning distances from schools, churches, and daycares must be verified before design.
Medical, Dental & Office
Medical and dental TIs frequently involve lead-lined walls for imaging, medical gas rough-in, upgraded plumbing at every operatory, and stricter infection-control detailing. Standard office TIs are the fastest and least expensive commercial TI category, but ADA path-of-travel and restroom compliance still trigger scope in older buildings.
How to Choose a Commercial GC in Phoenix
Not every general contractor is set up for commercial TI work. When you are vetting a GC for a Phoenix build-out, look for:
- An active Arizona Registrar of Contractors commercial license, such as a B-class license or specialty license as appropriate.
- General liability and workers’ comp insurance limits that meet or exceed your lease requirements.
- A verifiable portfolio of similar commercial projects, including restaurant, brewery, dispensary, medical, office, or retail work.
- A pre-construction process with real estimating, subcontractor pricing, and value engineering before you sign a construction contract.
- Experience running City of Phoenix and East Valley municipal permits and working with landlord property management teams.
- Clear communication, weekly owner meetings, written change orders, and a single point of contact throughout the project.
Frequently Asked Questions
How much does a commercial tenant improvement cost per square foot in Phoenix?
How long does a commercial TI take in Phoenix?
Do I need an architect for a commercial TI?
Can my GC start construction before permits are issued?
What is the difference between a TI allowance and a turnkey build-out?
Do I need a separate permit for signage?
What happens if the space does not pass final inspection?
Planning a Commercial Build-Out in Phoenix?
Lions Construction Group is a licensed commercial general contractor based in Phoenix, Arizona, serving the greater Valley. We specialize in tenant improvements, build-outs, and remodels for restaurants, breweries, dispensaries, medical, office, and retail clients.
If you are evaluating a lease, working through design, or ready to price a build-out, we are happy to walk the space and give you an honest read on scope, schedule, and budget before you commit.
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