El Monte is a working city — generations of families in modest homes they maintain with pride, where a contractor’s honesty matters more than a showroom. The housing stock is older and hardworking: postwar bungalows and ranch homes whose plumbing, drains, and HVAC have given decades of service and are ready for renewal. Here, the right contractor tells you what you need, what can wait, and what isn’t worth doing.
Mars Construction Industries Corp operates that way, 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) — so when we recommend a repipe or a sewer lining, it’s our own licensed crews doing the work, not a sales commission for a subcontractor. One detailed written estimate, one accountable team, straight answers.
Construction & Remodeling Services in El Monte, CA
Practical systems work is the backbone of what El Monte needs: whole-home repipes for corroded galvanized lines, water heater replacements before the old unit floods the garage, sewer camera inspections showing you — on video — whether that slow drain is a cleaning or a collapsed lateral. Failing laterals get trenchless lining with a 20-year warranty, without the excavation cost of dig-and-replace. Our C-36 crews do it all in-house. HVAC gets the same honest treatment from our C-20 crews: repair when there’s life left, right-sized replacement when there isn’t. No upselling, no scare tactics — just the math, in writing.
When systems are sound, we do the living-space work: budget-honest kitchen and bath remodels, room additions under our A and B licenses, and ADUs — 100+ built in four years through ADU Cities — a strong fit for El Monte’s multigenerational households. And 911 Drain Lines answers 24/7 at 714.746.7611 when something can’t wait.
- Whole-home repipes — corroded supply lines replaced with modern piping, priced honestly.
- Sewer camera inspection and trenchless lining — see the problem on video; 20-year warranty.
- Water heater replacement — before the old unit fails, by licensed C-36 plumbers.
- HVAC repair and replacement — honest C-20 assessments; right-sized new systems.
- Drain cleaning and hydro jetting — 24/7 emergency response via 911 Drain Lines at 714.746.7611.
- Kitchen and bath remodels — budget-honest renovations built around your home’s actual conditions.
- Room additions and ADUs — via our ADU Cities team, for multigenerational living.
Why El Monte 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 El Monte, 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 El Monte and Los Angeles County
El Monte sits in the heart of the San Gabriel Valley in Los Angeles County, within our roughly 50-mile radius from Orange County — our crews run the SGV regularly. Diagnostics before recommendations, video evidence for underground work, one written estimate covering the whole job. Call 310.880.9718 or email brett@marsx.construction.
Frequently Asked Questions
What areas do you serve?
We’re based in Orange, California, working within roughly a 50-mile radius across Orange County, LA County, and the Inland Empire. El Monte is squarely in our service area — our crews are in Los Angeles County regularly.
Do you handle every trade in-house?
The trades that matter most — building, plumbing, HVAC — are our own licensed crews under CSLB #1138550. For specialty scopes outside our four licenses, we bring in vetted specialists and manage them. Either way, you deal with one accountable team and one point of contact.
Can you build an ADU on my property?
Yes — through ADU Cities we’ve built 100+ ADUs in four years. Design, permitting support, and construction in one design-build package: garage conversions, detached units, and attached additions.
How do we know you’re not upselling work we don’t need?
We lead with diagnostics. Camera inspections show you the pipe on video; HVAC assessments come with actual readings. Written estimates separate must-do from nice-to-do, and with in-house crews rather than commissioned salespeople, we have no incentive to invent work. If something can wait, we’ll tell you it can wait.
Get a Straight Answer on Your Project
Remodel, addition, repipe, new HVAC, or commercial build-out in El Monte — 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. With 30+ years of hands-on experience. That’s Mars.