Rosemead is a classic San Gabriel Valley suburb — diverse, family-oriented, and full of postwar and mid-century homes that have sheltered generations. Many of these houses are now due for real updates: kitchens and baths from another era, plumbing systems that have served their full life, and floor plans that need more room for multigenerational households. In a community like this, homeowners need a contractor who gives straight answers, fair written estimates, and work that holds up — not upsells. And because so many projects here combine construction with plumbing or HVAC, a multi-trade contractor saves both money and headaches.
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, so a Rosemead homeowner gets one contract and one team responsible for the whole job.
Construction & Remodeling Services in Rosemead, CA
Kitchen and bathroom remodels are the heart of our Rosemead work. We take these projects from demolition to finish — framing, plumbing, tile, fixtures — with our C-36 plumbing license in-house, so moving a sink, adding a shower, or converting a tub stays inside one job. Many Rosemead kitchens also benefit from practical upgrades done at the same time: a gas line run for a new range, better ventilation, and water lines brought up to current standards.
Additions are common here too, as families grow and households span generations. We build room additions — bedrooms, expanded living areas, primary suites — engineered and permitted as part of the existing home. And ADUs have become one of the most practical investments in the San Gabriel Valley: through our sister brand ADU Cities, we’ve built more than 100 ADUs in four years, giving families flexible space for relatives or long-term rental income.
Behind the walls, older Rosemead homes often need repipes, water heater replacements, and gas line work — all in-house trades for us. Our drain and sewer services include camera inspection, hydro jetting, and trenchless sewer repair, with a 20-year warranty on sewer lining. We also install, replace, and repair HVAC systems, which matters in the Valley’s summer heat.
- 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 Rosemead Property Owners Choose Mars
One accountable team — that’s the whole model. Four licenses in-house (A, B, C-36, C-20) means your remodel’s plumbing and HVAC don’t get handed off to strangers; they’re done by us, under 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. 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 Rosemead and Los Angeles County
Rosemead 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 small businesses here get the same licensed, multi-trade team we bring everywhere.
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 visit 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 — no pressure, no upsell.
Can you build an ADU on my lot?
In many cases, yes. We’ve built more than 100 ADUs in four years through our sister brand ADU Cities. We’ll look at your lot and talk through what fits and what the project involves.
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 — for backups, burst pipes, and water heater failures.
Which trades do you handle in-house?
General construction and remodeling, plumbing, drain and sewer, and HVAC, all under our own licenses. Electrical work is performed by qualified licensed electricians we bring in, since we do not hold the C-10 electrical classification.
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.