Covina is classic San Gabriel Valley — a historic downtown, citrus-era roots, and neighborhoods of mid-century and older homes with real character. Houses here have lived several lives: original construction from the postwar boom, remodels from the 80s and 90s, and now a generation of owners ready to do it properly. That layered history is exactly when a multi-trade general contractor earns its keep. Behind the walls of a Covina home you’ll find the full timeline — old supply lines, updated fixtures, aging drains — and sorting it out takes one licensed team that can handle structure, plumbing, and HVAC together. Mars Construction Industries Corp does that work, backed by 30+ years of hands-on experience.
Construction & Remodeling Services in Covina, CA
Kitchen and bathroom remodels lead our Covina work. Mid-century kitchens open up into the home’s living space with islands and modern storage; bathrooms get rebuilt from the studs with proper waterproofing — critical in homes where decades of small leaks have hidden in walls. Our C-36 plumbers do all the water, drain, and gas work in-house, and our crews handle the framing, tile, and finishes, so the remodel moves as one project instead of a relay between vendors.
Whole-home renovations are common in Covina’s older neighborhoods, where a house needs systems and finishes updated together. We scope the complete project — repipe where supply lines have aged out, water heater replacement, HVAC evaluation and replacement through our C-20 team, plus kitchen, baths, flooring, and paint — and execute it in one coordinated sequence. Our A (General Engineering) license covers structural work too: additions, foundation repairs, and framing corrections in homes that have settled over sixty years.
Drain and sewer service comes through 911 Drain Lines: camera inspections that show you exactly what your lateral looks like, hydro jetting for buildup, and trenchless repair with a 20-year lining warranty for lines that have failed — all without tearing up mature landscaping where it can be avoided. We also build ADUs — more than 100 in four years through our sister brand ADU Cities — and handle commercial tenant improvements along Covina’s corridors.
- Kitchen remodels: open layouts, islands, cabinetry, stone counters
- Bathroom remodels rebuilt from the studs with proper waterproofing
- Whole-home renovations for mid-century and older homes
- Repipes, water heaters, and fixture upgrades
- HVAC installation, replacement, and repair
- Drain & sewer: camera inspection, hydro jetting, trenchless repair (20-year warranty)
- Room additions, structural repairs, and ADUs
- Commercial tenant improvement and commercial mechanical/plumbing
Why Covina Property Owners Choose Mars
A house with sixty years of layered work doesn’t need a contractor with one skill — it needs a team that can read the whole story. Mars holds A General Engineering, B General Building, C-36 Plumbing, and C-20 HVAC licenses in-house under CSLB #1138550. The crew that opens your wall can fix the framing, run the new pipe, and adjust the ductwork — because it’s all the same company. One estimate, one schedule, one accountable team.
Mars Construction Industries Corp: licensed, bonded, and insured — backed by 30+ years of hands-on experience, with SB-PW and SB(Micro) small-business certifications. Emergency drain and plumbing service 24/7 through 911 Drain Lines at 714.746.7611.
Proudly Serving Covina and Los Angeles County
Covina is in the San Gabriel Valley region of Los Angeles County, squarely in our service area. From our Orange, CA headquarters we serve property owners across Los Angeles County — including nearby West Covina, Glendora, Azusa, and San Dimas — and throughout Orange, Riverside, San Bernardino, and San Diego counties.
Frequently Asked Questions
Are you a licensed contractor?
Yes. Mars Construction Industries Corp is CSLB #1138550, holding A (General Engineering), B (General Building), C-36 (Plumbing), and C-20 (HVAC). Licensed, bonded, and insured, with SB-PW and SB(Micro) certifications.
My home has had several remodels over the decades. Can you sort it out?
Yes — that’s a specialty. We diagnose the full picture (structure, plumbing, HVAC) before recommending work, so the new remodel fixes old problems instead of covering them.
Which trades do you keep in-house?
General construction, plumbing, drain and sewer, and HVAC — all under our own licenses. Work outside those classifications, such as electrical contracting, is performed by licensed specialty subcontractors we manage.
Do you offer trenchless sewer repair?
Yes. Trenchless repair or lining replaces a failed lateral without major excavation where conditions allow, backed by a 20-year warranty — a real advantage in neighborhoods with mature landscaping.
Can you build an ADU on my property?
In many cases, yes. Through ADU Cities we’ve built more than 100 ADUs in four years — detached units, garage conversions, and attached additions.
Do you handle plumbing emergencies?
Yes. 911 Drain Lines provides 24/7 drain and plumbing emergency service at 714.746.7611.
Get a Straight Answer on Your Project
For your Covina remodel, renovation, or systems project — done properly this time — call Mars Construction Industries Corp at 310.880.9718 or email brett@marsx.construction. One accountable team, four licenses in-house.