South Gate is a southeast Los Angeles County suburb of single-family neighborhoods — tract and postwar homes on residential streets, home to families who’ve often lived in the same house for decades. The work here reflects that: kitchens and baths ready for real updates, additions as households grow and span generations, ADUs adding flexible space, and the infrastructure behind it all — plumbing, water heaters, sewer lines, HVAC — reaching the age where renewal beats repair. Homeowners here value straight talk and fair dealing, and a multi-trade contractor who can handle the remodel and the repipe under one contract.
Mars Construction Industries Corp is a multi-trade general contractor based in Orange, CA, operating with 30+ years of hands-on experience. We hold four CSLB licenses in-house — A General Engineering, B General Building, C-36 Plumbing, and C-20 HVAC (CSLB #1138550). One accountable team handles your construction, plumbing, drain and sewer work, and HVAC — one call, one contract, one team responsible.
Construction & Remodeling Services in South Gate, CA
Kitchen and bathroom remodels are the core of our South Gate residential work. We take these from demolition to finish — framing, plumbing, tile, fixtures — with our C-36 plumbing license in-house, so moving a sink or shower, replacing supply lines, or upgrading a water heater happens inside the same job. Many homeowners pair the visible remodel with a full repipe, opening walls once to renew the plumbing and deliver new finishes together.
Additions serve South Gate’s growing and multigenerational households: bedrooms, expanded living areas, primary suites, built as engineered extensions of the existing home. ADUs are another strong fit — through our sister brand ADU Cities, we’ve built more than 100 ADUs in four years, giving families independent space for relatives on the same lot.
Behind the walls and under the yard, we handle repipes, water heater and gas line work, and drain and sewer services: camera inspection, hydro jetting, and trenchless sewer repair. Our sewer lining carries a 20-year warranty — meaningful protection for a homeowner facing a failing lateral. We also install, replace, and repair HVAC systems, and we handle commercial tenant improvement for the small businesses along the city’s corridors.
- Kitchen and bathroom remodels
- Room additions for growing and multigenerational households
- ADUs — 100+ built in four years through ADU Cities
- Repipes, water heaters, and gas lines
- Drain and sewer services: camera inspection, hydro jetting, trenchless repair, sewer lining (20-year warranty)
- HVAC installation, replacement, and repair
- Whole-home renovations
- Commercial and tenant improvement for local businesses
Why South Gate Property Owners Choose Mars
One accountable team — that’s our whole model. Four licenses in-house (A, B, C-36, C-20) means your project’s construction, plumbing, sewer, and HVAC are all done by us, with no gaps between trades and no finger-pointing. With 30+ years of hands-on experience, we’re licensed, bonded, and insured (CSLB #1138550), and we’re SB-PW and SB(Micro) certified. You get straight answers, written estimates, and a single team responsible from start to finish. Our sister brands — 911 Drain Lines, ADU Cities, Get Your Roof Certified, and Universal Inspect — extend what one call covers.
Proudly Serving South Gate and Los Angeles County
South Gate is in southeastern Los Angeles County, well within our service area. Our home base is at 1119 W. Collins Ave, Orange, CA 92867, and we serve the southeast LA communities within roughly a 50-mile radius. Homeowners and businesses here get the same licensed, multi-trade team.
Frequently Asked Questions
Do I need a licensed contractor for my project?
In California, any construction project totaling $1,000 or more in labor and materials must be performed by a licensed contractor. Check any contractor’s license on the CSLB website before hiring. Ours is CSLB #1138550 — A General Engineering, B General Building, C-36 Plumbing, and C-20 HVAC.
How does your estimate process work?
We come to your home, walk through the project with you, and provide a written estimate. We’ll tell you plainly what needs doing, what can wait, and what the work involves.
Can you do a remodel and a repipe in one project?
Yes — that’s exactly what our licenses are structured for. Our B license covers the construction, our C-36 covers the plumbing: one coordinated job, one contract, walls opened once.
Can you build an ADU on my lot?
Often, yes. We’ve built more than 100 ADUs in four years through ADU Cities. We’ll evaluate your lot and talk through the options.
Do you handle plumbing or sewer emergencies?
Yes. Our sister brand 911 Drain Lines offers 24/7 drain and plumbing emergency service at 714.746.7611.
Get a Straight Answer on Your Project
Tell us what your home needs — a remodel, an addition, an ADU, a repipe — and we’ll give you a straight answer and a written estimate. Call 310.880.9718 or email brett@marsx.construction. One accountable team, four licenses in-house, operating with 30+ years of hands-on experience.