Commercial & Residential Tenant Improvements.
From office build-outs and retail fit-outs to apartment renovations and ADU upgrades — one licensed contractor, in-house permit expediting, no subcontractor surprises.
One Team for Every Space
Whether you're fitting out a new commercial lease or renovating a residential unit, we handle the full project — from permit to punch list — under one contract and one license.
Commercial TI Scopes
- Office build-outs — open plan, private offices, and conference rooms
- Retail fit-outs — storefront improvements and display environments
- Restaurant & food service — kitchen construction and code compliance
- Medical & dental offices — ADA-compliant layout and plumbing
- Warehouse-to-office conversions with mezzanine additions
- Common area upgrades — lobbies, restrooms, and corridors
Why owners choose Datum for commercial TI
- Permit expediting in-house — no third-party delays
- Experience across LA, OC, Inland Empire, and Bay Area jurisdictions
- Fixed-bid proposals with no allowance padding
- Can work around active tenants with phased scheduling
- Coordinate directly with your architect or broker
All Trades. One Contract.
We self-perform or directly manage every trade required to deliver your space — no subcontractor pass-throughs that inflate cost and risk.
Permit to Punch List
Five steps from scope agreement to certificate of occupancy — managed under one contract with one point of contact.
Site Walk & Scope
We walk the space with you, document existing conditions, and define the full scope of work
Design Coordination
Coordinate with architects or space planners, or work from your existing drawings
Permit Filing
Our in-house permit expediting team pulls all required building, electrical, and plumbing permits
Construction
Licensed crews handle all trades — framing, drywall, flooring, electrical, plumbing, and finishes
Final Inspection
City sign-off, punch list walk, and certificate of occupancy coordination
Frequently Asked Questions
Common questions about tenant improvement projects and how we work.
Yes — we hold a Class B General Contractor license (CSLB #1140201) covering both commercial and residential work in California. Our crews regularly handle office build-outs, retail fit-outs, apartment renovations, and condo improvements under the same license.
Absolutely. Our in-house permit expediting team handles all required permits — building, electrical, plumbing, and mechanical — across Los Angeles, Orange County, and surrounding jurisdictions. We know which departments require plan check and how to move through them fast.
Not always. For simpler scopes (cosmetic renovations, flooring, painting, fixture upgrades), permits may not require stamped plans. For larger build-outs, we coordinate directly with your architect or can refer you to trusted design partners who specialize in TI work.
Timelines depend on scope. A cosmetic apartment renovation can wrap in 2–3 weeks. A full commercial build-out with permit plan check typically takes 6–14 weeks from permit approval. We'll give you a realistic schedule in writing before work begins.
Our proposals break out every trade: demolition, framing, drywall, flooring, painting, electrical, plumbing, and hardware. We don't pad with allowances — you get a firm price for the agreed scope so there are no billing surprises mid-project.
Yes. We regularly phase construction around tenant occupancy and business hours. We can coordinate after-hours work, weekend shifts, or phased builds that keep portions of your space operational throughout the project.