Tucked into the foothills between Riverside and San Bernardino, Grand Terrace is a small city with a close-knit feel — modest postwar and tract homes on streets where neighbors know each other. Homeowners here tend to improve rather than move, which means additions, updated kitchens and baths, and ADUs for extended family are the projects that define the local market.
Smaller homes make coordination matter more, not less. When a Grand Terrace addition needs new plumbing tied into an older system, a sewer lateral checked before the new slab goes down, and HVAC extended into the new space, three separate contractors will burn your budget on mobilization alone. A single multi-license contractor sequences it as one job — that is the whole point of holding the A, B, C-36, and C-20 under one roof.
Construction & Remodeling Services in Grand Terrace, CA
Room additions are our bread and butter in foothill suburbs like Grand Terrace: bedrooms, family rooms, and primary suites that match the existing home instead of looking bolted on. Our A General Engineering and B General Building licenses cover the structural and grading side, while our in-house C-36 plumbers and C-20 HVAC techs handle everything the new space needs behind the walls.
We also build ADUs for multigenerational households — a common-sense answer in a community where families stay close — and we remodel the kitchens and bathrooms that date these homes the most. Aging supply lines and root-prone sewer laterals get the 911 Drain Lines treatment: camera inspection first, then hydro jetting or trenchless repair with a 20-year lining warranty when replacement is warranted. Add in HVAC replacement and water heater upgrades, and one call genuinely covers the house.
- Room additions, primary suites, and family rooms
- ADUs for multigenerational living
- Kitchen and bathroom remodeling
- Sewer camera inspection and trenchless repair — 20-year lining warranty
- HVAC installation, replacement, and repair
- Repipes, water heaters, and gas lines
- General home repairs and improvements
Why Grand Terrace Property Owners Choose Mars
Most construction projects fall apart in the gaps between trades. The general contractor blames the plumber, the plumber blames the HVAC tech, and the homeowner is left playing referee. Mars Construction Industries Corp was built to eliminate that problem. We have been a licensed general contractor in Southern California backed by 30+ years of hands-on experience, and we hold four CSLB licenses in-house: A General Engineering, B General Building, C-36 Plumbing, and C-20 HVAC — CSLB #1138550.
That means one accountable team from the first walkthrough to the final punch list. When your project needs a repipe, a new sewer lateral, and an HVAC changeout in the same week, you make one call and we sequence all of it. No finger-pointing, no scheduling gaps, no “that’s not my trade.”
We are licensed, bonded, and insured, and we carry SB-PW and SB(Micro) small business certifications. Our family of brands — 911 Drain Lines for drain and sewer work, ADU Cities for accessory dwelling units, Get Your Roof Certified, and Universal Inspect for property inspections — means the same company you trust with your remodel can also camera your sewer line, build your ADU, or inspect a property before you buy it.
Proudly Serving Grand Terrace and San Bernardino County
Grand Terrace is one of the San Bernardino County communities we serve. Our home base is at 1119 W. Collins Ave in Orange, CA, and our Inland Empire crews serve communities across the region. Inland Empire customers can also reach us directly at 909.325.0020.
Frequently Asked Questions
Are you a licensed contractor?
Yes. Mars Construction Industries Corp holds California CSLB license #1138550, covering A General Engineering, B General Building, C-36 Plumbing, and C-20 HVAC. We are licensed, bonded, and insured, and we hold SB-PW and SB(Micro) small business certifications.
How does the estimate process work?
It starts with a conversation about what you need. We walk the project, put together a clear written scope, and give you straightforward combined pricing — no buried markups, no vague allowances. Call 310.880.9718 or email brett@marsx.construction and we will set up a time to look at your project.
Which trades do you handle in-house?
General construction and remodeling, plumbing, drain and sewer, and HVAC — all under our own CSLB licenses, so one team is accountable for the whole job. If your project also needs electrical work, we coordinate it through licensed C-10 electrical subcontractors and manage them as part of your project.
Do you offer emergency service?
For drain and plumbing emergencies, our 911 Drain Lines team is available 24/7 at 714.746.7611 — camera inspections, hydro jetting, and sewer repairs, day or night.
Can you build an ADU on my property?
In many cases, yes. Through our sister brand ADU Cities, we have built more than 100 ADUs in the last four years, so we know how to evaluate a lot, design to the space, and build it right.
Do you take on commercial work?
Yes. We handle commercial and tenant improvement projects — office and retail buildouts, restaurant plumbing, and multi-trade renovations — with the same single-point accountability we bring to residential work.
Get a Straight Answer on Your Project
Whether it is a kitchen remodel, a sewer line that keeps backing up, an HVAC system that cannot keep up, or plans still on paper — talk to a contractor licensed to do the whole job. Call Mars Construction Industries Corp at 310.880.9718 or email brett@marsx.construction. One call, one accountable team, and a straight answer about what your project really needs.
Prefer email? Send your project details to brett@marsx.construction.