Rancho Santa Margarita is master-planned living at its most complete — village-style neighborhoods, HOA communities, homes designed as a system and now aging as one. The dynamic here is specific: homeowners improving within HOA guidelines, original 1990s-era kitchens and baths ready for reinvention, families adding ADUs or additions as households evolve. It takes a contractor who respects community rules and still delivers a great project.
Mars Construction Industries Corp has navigated HOA communities across Orange County with 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 your remodel, addition, or ADU runs through one licensed, bonded, and insured team that works within community standards: proper documentation, clean job sites, respectful hours, one project manager as your single point of contact.
Construction & Remodeling Services in Rancho Santa Margarita, CA
Kitchen and bath remodels lead our Rancho Santa Margarita work — the 1990s originals are ready, and our re-planning approach treats them as whole projects: C-36 plumbers move the gas range and rough-in new fixtures, C-20 crews rebalance the HVAC for opened-up floor plans, B builders handle the structural and finish work. One design, one sequence, one team — documented the way HOA architectural review expects. Additions and ADUs are the growth story — 100+ built in four years through ADU Cities — detached units, garage conversions, and attached additions for multigenerational families, with the HOA approval path planned alongside the construction plan.
The systems side matters too: HVAC replacements for aging original equipment, sized properly by our C-20 crews; water heaters and repipes by our C-36 plumbers; sewer camera inspections and trenchless lining with our 20-year warranty when a lateral needs renewal. And 911 Drain Lines answers 24/7 at 714.746.7611 when something can’t wait.
- Kitchen and bath remodels — re-planned renovations for 1990s-era homes, HOA-aware and fully documented.
- Room additions and ADUs — via our ADU Cities team, with HOA approval planning built in.
- HVAC replacement and repair — properly sized C-20 installations replacing aging original systems.
- Whole-home repipes — modern supply plumbing by licensed C-36 crews.
- Sewer camera inspection and trenchless lining — diagnose and renew laterals; 20-year warranty.
- Water heaters and gas lines — replacement and new runs by licensed plumbers.
- Garage conversions — underused garages turned into living space, designed and built in-house.
Why Rancho Santa Margarita Property Owners Choose Mars
The classic remodeling horror story goes like this: three contractors, three schedules, and nobody responsible when something goes wrong. We’re the opposite of that. Mars Construction Industries Corp is licensed, bonded, and insured (CSLB #1138550), backed by 30+ years of hands-on experience, and we hold four trade licenses in-house — A General Engineering, B General Building, C-36 Plumbing, C-20 HVAC — so most of your project never leaves our own crews.
That changes the experience: the company that bids your kitchen remodel also moves the gas line, sizes the HVAC for the new floor plan, and handles the structural work. No finger-pointing between subs, no stacked mystery markups, no waiting weeks for a trade contractor to fit you in.
We’re based in Orange, California, and carry SB-PW and SB(Micro) certifications. Through 911 Drain Lines, ADU Cities, Get Your Roof Certified, and Universal Inspect, we serve a property end to end — from the sewer lateral (our trenchless lining has a 20-year warranty) to the roof. Rancho Santa Margarita hires us because one accountable team is simply easier, and the work turns out better.
Proudly Serving Rancho Santa Margarita and Orange County
Rancho Santa Margarita anchors south Orange County’s master-planned communities — our home county — served regularly by our Orange County crews from our office at 1119 W. Collins Ave in the city of Orange. HOA communities get our most organized project management: documentation, communication, and job-site standards that keep neighbors happy and approvals smooth. Call 310.880.9718.
Frequently Asked Questions
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.
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. Rancho Santa Margarita is squarely in our service area — our crews are in Orange County regularly.
How does your estimate process work?
Call 310.880.9718 or email brett@marsx.construction. We’ll walk the property, look at actual conditions, and give you a detailed written estimate spelling out scope, materials, and expectations. No pressure, no vague allowances — you know exactly what you’re buying before work starts.
Our HOA has an architectural review process. Do you work with HOAs?
Regularly. We prepare the documentation architectural committees expect — scope descriptions, material selections, construction plans — and run job sites to community standards: defined hours, clean perimeters, respectful crews. Tell us your HOA’s requirements during the walkthrough and we’ll build the approval timeline into the project plan.
Get a Straight Answer on Your Project
Remodel, addition, repipe, new HVAC, or commercial build-out in Rancho Santa Margarita — 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.