Westminster is two essential Orange County stories in one city: Little Saigon, the vibrant Vietnamese commercial and cultural capital with its dense restaurant and retail corridors, and the surrounding 1960s tract neighborhoods where families have lived for generations. Both need the same thing — real trade capability, honest pricing, work done right the first time — applied to very different buildings.
Mars Construction Industries Corp delivers exactly that, backed by 30+ years of hands-on experience. Four CSLB licenses in-house — A General Engineering, B General Building, C-36 Plumbing, C-20 HVAC (Lic. #1138550) — makes us equally at home building out a restaurant kitchen on Bolsa Avenue and repiping a 1960s tract home. One licensed, bonded, and insured team, one detailed written estimate, crews who respect both the business owner’s opening date and the homeowner’s budget.
Construction & Remodeling Services in Westminster, CA
Little Saigon’s restaurant corridor is demanding, high-value commercial work — and our C-36 plumbing crews’ home turf. Commercial kitchen plumbing, drainage, and gas lines for cooking equipment have to be right the first time; our C-20 crews handle the HVAC and ventilation restaurants live or die by. Both trades in-house means restaurant build-outs and TI projects stay on our schedule, coordinated by one project manager who’s done it before. In the tract neighborhoods, the 1960s infrastructure story is familiar: galvanized supply lines, cast-iron drains, laterals due for inspection. We camera-inspect before recommending, repipe cleanly with our own C-36 crews, and trenchless lining with our 20-year warranty renews failing laterals without excavating the yard.
Multigenerational households drive steady ADU demand — 100+ built in four years through ADU Cities — garage conversions and detached units as a single design-build package. Kitchen and bath remodels get planned around real budgets: honest numbers, no theater. And 911 Drain Lines answers 24/7 at 714.746.7611 for emergencies that don’t keep business hours.
- Restaurant and commercial kitchen build-outs — kitchen plumbing, gas lines, drainage, HVAC by our own licensed crews.
- Retail and office tenant improvement — coordinated TI along Westminster’s commercial corridors.
- Repipes and sewer renewal — camera inspection, repipes, trenchless lining with a 20-year warranty for 1960s tracts.
- Kitchen and bath remodels — budget-honest renovations with in-house plumbing and mechanical.
- ADUs and garage conversions — via our ADU Cities team.
- HVAC install, replacement, and repair — C-20 crews for homes and commercial spaces.
- 24/7 emergency drain and plumbing — through 911 Drain Lines at 714.746.7611.
Why Westminster Property Owners Choose Mars
Most projects don’t fail because of one bad trade — they fail in the gaps between trades. Mars Construction Industries Corp was built to eliminate those gaps. We hold four CSLB licenses in-house — A General Engineering, B General Building, C-36 Plumbing, C-20 HVAC (Lic. #1138550) — so the engineering, building, plumbing, and mechanical work on your project all answer to one accountable team.
One estimate covers the whole scope. One project manager runs the schedule. And when something unexpected turns up behind a wall in Westminster, our plumber and our carpenter already work for the same company — work doesn’t stall while you hunt for another contractor.
With 30+ years of hands-on experience and based in Orange, California, we’re licensed, bonded, and insured, with SB-PW and SB(Micro) certifications. Our sister brands — 911 Drain Lines, ADU Cities, Get Your Roof Certified, Universal Inspect — cover a property’s full life, and our trenchless sewer lining carries a 20-year warranty. One call, one team, one throat to choke.
Proudly Serving Westminster and Orange County
Westminster sits in central Orange County — our home county — minutes from our office at 1119 W. Collins Ave in the city of Orange. Our crews are across Westminster constantly, from the Little Saigon commercial corridors to the tract neighborhoods. Restaurant build-out or tract-home repipe: four licenses, one accountable team, a written estimate before work begins. Call 310.880.9718.
Frequently Asked Questions
Are you licensed to do this work?
Yes. Mars Construction Industries Corp holds CSLB #1138550 — A General Engineering, B General Building, C-36 Plumbing, and C-20 HVAC. We’re licensed, bonded, and insured, with SB-PW and SB(Micro) certifications. Verify any California contractor at cslb.ca.gov — we encourage it.
Do you offer emergency service?
Yes. 911 Drain Lines runs 24/7 for drain and plumbing emergencies at 714.746.7611. For urgent construction issues, call 310.880.9718 and we’ll get the right crew moving.
Do you take on commercial work?
Absolutely — offices, retail, restaurants, and light industrial/warehouse interiors. We’re licensed, bonded, and insured for commercial work with SB-PW and SB(Micro) certifications, and in-house plumbing and HVAC keep TI schedules tight.
We’re opening a restaurant and need kitchen plumbing and gas lines. Is that in-house?
Yes — commercial kitchen plumbing and gas lines are our own C-36 crews’ work, not subcontracted. Kitchen drainage, gas runs for cooking equipment, and health-code plumbing requirements are handled by plumbers who do restaurant work regularly, alongside our C-20 crews on HVAC and ventilation. One team, one schedule, and a written estimate covering the full kitchen mechanical scope.
Get a Straight Answer on Your Project
Remodel, addition, repipe, new HVAC, or commercial build-out in Westminster — talk to the contractor who can do all of it. Call Mars Construction Industries Corp at 310.880.9718 or email brett@marsx.construction. We’ll give you a straight assessment and a detailed written estimate. Our office: 1119 W. Collins Ave, Orange, CA 92867.
One accountable team. Four licenses. 30+ years of hands-on experience. That’s Mars.