Montclair anchors the west end of San Bernardino County — an established suburb of mid-century homes and busy commercial corridors, close enough to LA County that its housing stock and its business mix reflect both. Homeowners here are practical improvers: the house needs a real update, the budget needs to make sense, and the work needs to last.
Mid-century suburbs like Montclair are where multi-trade licensing quietly saves the most money. The kitchen remodel reveals galvanized pipes that should have been replaced years ago; the addition needs HVAC extended and a sewer lateral checked; the storefront remodel needs plumbing, HVAC, and general construction coordinated around business hours. One contractor holding the A, B, C-36, and C-20 plans for all of it upfront instead of discovering it in change orders.
Construction & Remodeling Services in Montclair, CA
We modernize Montclair’s mid-century homes from the systems outward: whole-home repipes, water heater and gas line upgrades, and HVAC replacement by our in-house C-20 team — then the kitchens and bathrooms that make the house feel new, with layouts opened up and finishes chosen to last. Additions give growing families room without giving up the neighborhood, and ADUs turn underused lots into flexible space.
Our 911 Drain Lines division handles what is underground: camera inspections that show the real condition of older laterals, hydro jetting for root and scale, and trenchless rehabilitation backed by a 20-year warranty when replacement is the honest answer. On the commercial side, we serve Montclair’s corridors with tenant improvements and multi-trade repairs for retail, office, and food service — coordinated to keep businesses running while we work.
- Mid-century kitchen and bathroom modernization
- Whole-home repipes, water heaters, and gas lines
- HVAC replacement and repair (C-20 licensed)
- Room additions and ADUs
- Sewer camera inspection, hydro jetting, trenchless repair — 20-year lining warranty
- Commercial tenant improvement for retail, office, and food service
Why Montclair 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 Montclair and San Bernardino County
Montclair 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.