Whether you are a business owner fitting out a new lease or a property owner preparing a space for a tenant, a tenant improvement project turns a raw or dated commercial space into one that works. The costs and the deal structure vary widely by space type, so it pays to understand both before you sign a lease or break ground.
What tenant improvement covers
Tenant improvement, also called TI or a build-out, is the interior construction that makes a commercial space ready for use. It ranges from cosmetic updates like paint, flooring and lighting, to layout changes such as new partition walls, to system work including HVAC, electrical and plumbing. The scope depends entirely on the gap between the space as delivered and what the business needs.
Who pays: the TI allowance
In most commercial leases, the landlord contributes a tenant improvement allowance, a set dollar amount per square foot toward the build-out, usually reimbursed after the work is complete. In Los Angeles, allowances commonly run around $50 to $80 per square foot, though it varies with the market, the term and the space.
The allowance rarely covers a full build-out. Most business owners pay for the scope above the allowance out of pocket, so the lease should spell out clearly what the allowance covers, how it is paid, and what happens to any unused amount. The allowance is one slider in the larger lease negotiation, alongside rent rate, term and free rent.
Typical cost by space type
Build-out cost depends heavily on the space type and the condition of the shell. Realistic 2026 Los Angeles ranges:
- Office: roughly $80 to $200 per square foot, with mid-range fit-outs around $75 to $150.
- Retail and showroom: roughly $75 to $250 per square foot, depending on finish and brand requirements.
- Restaurant and bar: roughly $200 to $500 per square foot, driven by kitchens, grease traps, plumbing and venting.
- Medical and dental: roughly $300 per square foot and up, because of specialized plumbing, equipment and compliance.
The single biggest cost variable is the shell condition. A second-generation space with usable existing systems costs far less to convert than a cold dark shell that needs everything.
Permits and timeline
Most TI work that touches structure, electrical or plumbing requires permits from LADBS, along with zoning and ADA compliance. Simple projects can sometimes be permitted over the counter in days, while a full build-out with plan check typically takes several weeks to a few months. California’s accessibility and energy codes are stricter than the federal baseline, so factor compliance into both budget and schedule.
How to choose a commercial contractor
Commercial TI rewards a contractor who knows the local process. Look for a licensed general contractor with commercial experience in your space type, fluency with LADBS permitting and California accessibility and energy codes, the ability to work within a landlord’s building rules and timeline, and transparent, milestone-based billing that aligns with how TI allowances are disbursed. Getting a detailed estimate during lease negotiation, before you sign, helps you understand your true out-of-pocket cost and negotiate a better allowance.
Frequently Asked Questions
How much does a commercial build-out cost in Los Angeles?
It depends on the space. Office fit-outs run roughly $80 to $200 per square foot, retail $75 to $250, restaurants $200 to $500, and medical spaces $300 and up. Shell condition is the biggest variable, since a second-generation space costs far less than a cold dark shell.
What is a tenant improvement allowance?
It is a dollar amount per square foot the landlord contributes toward the build-out, usually reimbursed after completion. In LA, allowances commonly run around $50 to $80 per square foot, though they rarely cover a full build-out, so the tenant typically pays the difference.
Do I need a permit for tenant improvement in LA?
Usually, yes. Work that affects structure, electrical or plumbing requires permits from LADBS, and zoning and ADA compliance may also apply. Simple cosmetic work may be exempt, but most build-outs need a permit.
How long does a commercial TI project take?
Simple projects can sometimes be permitted over the counter in days, while a full build-out with plan check typically takes several weeks to a few months, plus construction time. California’s stricter accessibility and energy codes can affect the schedule.
Should I negotiate the TI allowance before signing the lease?
Yes. The allowance is part of the larger lease negotiation. Getting a detailed build-out estimate before you sign lets you understand your real out-of-pocket cost and negotiate a stronger allowance and terms.
| Planning a commercial build-out in LA?
Ground Up Builders handles commercial tenant improvements across Greater Los Angeles, including permitting, code compliance and construction. Get a detailed estimate before you sign your lease. Schedule a free, no-obligation consultation. Visit groundupbuilders.com | Free estimates, no obligation. |