San Gabriel is one of the San Gabriel Valley’s oldest cities — a historic mission city where the housing stock spans from early-20th-century homes to mid-century tracts to newer infill. That range means San Gabriel projects vary widely: vintage homes needing repipes and sewer work, mid-century houses ready for kitchen and bath remodels, and growing families adding bedrooms or ADUs. The city’s commercial corridors are busy with small businesses, many operating in older buildings that need practical tenant improvements. Across all of it, the pattern is the same: construction plus plumbing, or remodeling plus HVAC — and one contractor holding all those licenses keeps the project simple.
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 under a single contract.
Construction & Remodeling Services in San Gabriel, CA
Kitchen and bathroom remodels anchor our San Gabriel work. With our C-36 plumbing license in-house, a remodel can include moving fixtures, replacing supply and drain lines, and upgrading water heaters or gas lines as part of the same job. In the city’s older homes, we frequently pair a remodel with a full repipe — opening walls once to renew the plumbing and deliver new finishes together, instead of paying for the disruption twice.
Additions and ADUs serve San Gabriel’s multigenerational households. We build room additions — bedrooms, expanded living space, primary suites — and ADUs through our sister brand ADU Cities, which has built more than 100 ADUs in four years. An ADU gives extended family independent space on the same lot, and we handle the entire project as your general contractor.
Our drain and sewer services — camera inspection, hydro jetting, trenchless repair — address the aging laterals common in older neighborhoods, with a 20-year warranty on sewer lining. We also install, replace, and repair HVAC systems for the Valley’s hot summers. And for local businesses, we perform commercial tenant improvement: build-outs and renovations for retail, restaurant, and office spaces, including the plumbing and HVAC work older commercial buildings so often require.
- Kitchen and bathroom remodels with in-house plumbing
- Repipes, water heaters, and gas lines
- Drain and sewer services: camera inspection, hydro jetting, trenchless repair, sewer lining (20-year warranty)
- Room additions for growing and multigenerational households
- ADUs — 100+ built in four years through ADU Cities
- HVAC installation, replacement, and repair
- Commercial and tenant improvement for retail, restaurant, and office spaces
Why San Gabriel Property Owners Choose Mars
One accountable team is our model. With A, B, C-36, and C-20 licenses in-house, your project’s construction, plumbing, sewer, and HVAC are all performed by us — no gaps between trades, no finger-pointing, one contract. We’ve been operating with 30+ years of hands-on experience, we’re licensed, bonded, and insured (CSLB #1138550), and we’re SB-PW and SB(Micro) certified. Whether it’s a vintage home’s repipe or a restaurant’s build-out, one team owns the result. Our sister brands — 911 Drain Lines, ADU Cities, Get Your Roof Certified, and Universal Inspect — extend what a single call covers.
Proudly Serving San Gabriel and Los Angeles County
San Gabriel is in the western San Gabriel Valley in Los Angeles County, well within our service area. Our home base is at 1119 W. Collins Ave, Orange, CA 92867, and we serve SGV 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. Verify any 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 visit the property, walk through the project with you, and provide a written estimate. In older homes, we check plumbing, sewer, and HVAC conditions so the estimate reflects the real scope of work.
Can you handle both a remodel and a repipe in one project?
Yes. Our B license covers the construction and our C-36 covers the plumbing, so both happen as one coordinated job under one contract — walls opened once, not twice.
Do you build ADUs?
Yes — more than 100 in four years through our sister brand ADU Cities. ADUs are a practical fit for San Gabriel’s multigenerational households.
Do you do commercial work?
Yes. We handle tenant improvement for retail, restaurant, and office spaces, including the plumbing and HVAC upgrades older commercial buildings typically need.
Get a Straight Answer on Your Project
From a kitchen remodel to a repipe to a commercial build-out, tell us what you’re planning and we’ll give you a straight answer. Call 310.880.9718 or email brett@marsx.construction. One accountable team, four licenses in-house, operating with 30+ years of hands-on experience.
Plumbing or drain emergency? Our sister brand 911 Drain Lines answers around the clock at 714.746.7611.