Commercial tenant improvement contractor in Los Angeles, serving West LA and the Westside — office, medical, and retail tenant improvements and build-outs delivered on time, including work in occupied buildings.
Tenant improvements — also called build-outs or leasehold improvements — are the heart of what we do. As a commercial tenant improvement contractor in Los Angeles, we handle office, medical, and retail tenant improvements across West LA and the Westside. Whether a landlord is repositioning vacant space for a new tenant or a business is fitting out a suite to match how it works, ASEP delivers build-outs that are planned precisely, permitted properly, and completed on schedule.
From open-plan offices and medical suites to retail tenant spaces, we handle the full scope of commercial tenant improvement work across West LA and the Westside. One accountable team manages design coordination, construction, and finishes.
Need plans as well as a builder? ASEP provides integrated tenant improvement design and construction. You can bring your own architect, or we provide architectural plans through our design partner, working with you directly or through us. Either way, design, engineering coordination, pricing, and permitting stay in sync, so drawings are buildable, priced early, and ready for plan check. Our work is engineering-led, which helps when a TI touches structure, mechanical systems, or tricky existing conditions.
We handle the full scope in-house as general contractor: interior demolition of walls, ceilings, flooring, and abandoned systems; framing and drywall; electrical, mechanical, and plumbing; ceilings and lighting; millwork; flooring and paint; and final punch list and closeout.
Medical tenant improvements bring heavier plumbing, dedicated equipment power, and stricter accessibility review. See our medical office tenant improvements page for how we deliver turnkey medical and dental build-outs.
Much of LA's TI work happens in buildings that are still in use. We sequence and stage work to keep neighboring tenants operating, manage noise and access, and meet building-management requirements without slipping the schedule.
We manage LADBS permitting and code compliance end to end. Because commercial plan check in Los Angeles can take time, we plan for it from day one so approvals don't become the bottleneck.
We build across West LA and the Westside, including tenant improvements in Santa Monica, Marina del Rey, Playa del Rey, and Playa Vista, Venice, Mar Vista, Culver City, Brentwood, and Downtown LA. Each city has its own permitting path; our LADBS permitting guide explains how it works in the City of Los Angeles.
Tell us about your project — we reply quickly and the consultation is free.
Request a ConsultationThey're essentially the same thing. “Tenant improvement” (TI) is the term used more often by commercial real estate agents and landlords, while “build-out” is more common in the construction industry. “Leasehold improvement” means the same as well. All describe interior work to make a commercial space fit a tenant's needs.
Cost depends on the size of the space, the existing condition, the level of finishes, and how much the layout and systems (electrical, HVAC, plumbing) need to change. Medical and specialty spaces cost more due to added requirements. We provide a clear, itemized estimate so there are no surprises.
Yes. We manage LADBS permitting and code compliance for your project end to end, and we plan around plan-check timelines so they don't delay your move-in.
Yes. We routinely work in occupied buildings, sequencing the work to keep you and neighboring tenants operating with minimal disruption.
Yes. ASEP Contractors holds California license CSLB #1093086 and is fully bonded and insured. Our work is led by a licensed professional, and we're happy to provide verification on request.
We provide a clear, itemized estimate up front and manage scope, schedule, and change orders closely throughout. If something needs to change, we flag it early with pricing before any work proceeds — no surprise costs at the end.
Yes. Interior demolition is part of our tenant improvement scope. We remove walls, ceilings, flooring, and abandoned systems safely and cleanly, coordinate with building management, and haul away debris before the new build-out begins.
Yes. We offer integrated design and construction. You can work with your own architect, or we provide architectural plans through our design partner, so design, pricing, and permitting stay coordinated under one team.
On time, on budget, and communicated every step of the way.
ASEP