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Ridgeline Western Construction
Framing • Additions • New Construction • Remodeling • Residential • Commercial
Accessory Dwelling Unit General Contractor
Accessory dwelling units are secondary homes built on the same lot as a primary residence, either detached, attached, converted from garage space, or built within an existing structure. Ridgeline Western Construction builds ADU projects around the structural work first: foundations, framing, roof tie-ins, wall openings, shear requirements, and inspection sequencing. We self-perform framing and carpentry, then schedule and manage licensed plumbing, electrical, and HVAC subs under the same contract so the ADU is built as one permitted project, not a pile of disconnected trades.
What We Build For ADUs
ADU projects mean framing and carpentry tailored to fit both new and existing structures. On detached units, we handle foundations, raised floor framing, walls, and roof assemblies from the ground up. Attached ADUs and garage conversions require careful tie-in to the original house — opening up walls, setting beams where structure changes, upgrading slabs, reworking headers, and making sure every connection transfers load the right way for the new use. We read shear wall plans, size framing for code, and close up the envelope with weather, fire, and energy assemblies called out in the plans.
All licensed trades — plumbing, electrical, HVAC — are scheduled and managed through us, not farmed out for you to chase. Permits, inspections, and utility hookups are pulled together under one contract, so the inspector sees a coordinated project. Logistics like Title 24 compliance, setbacks, utility tie-ins, and phasing around a main home stay on our checklist, not yours. If the main house stays occupied, we build the ADU process and sequencing to avoid disrupting the daily routine or exposing open structure longer than necessary.
In-Law Suite Addition
An in-law suite addition creates a separate living area connected to your main house. Ridgeline Western Construction manages everything from design consultation through construction, permits, and inspections. You get a fully code-compliant space built for comfort and accessibility, all delivered under a single contract and schedule.
Garage Conversion
A garage conversion changes an existing garage into a livable room or suite with proper permits and inspections. Ridgeline Western Construction manages the full project: structural assessment for framing changes, engineering, drawings, plan check, electrical and plumbing subs, insulation, drywall, flooring, and code-compliant windows and doors. One contract covers the build and every trade until the city signs off.
ADU Construction
ADU construction can turn unused yard space or an underbuilt garage into a code-compliant, permitted dwelling. Ridgeline Western Construction manages the entire ADU process from engineering and permits through buildout. We coordinate every step—design, structural framing, rough trades, and finish work—under a single contract and schedule. The result is one point of responsibility and a legal accessory unit ready for use or rental, with full permit documentation.
Need Accessory Dwelling Unit Work Done?
TEXT/CALL (909) 676-2814
View Accessory Dwelling Unit Services By The Area
About Our Accessory Dwelling Unit Services
Ridgeline Western Construction is owner-operated by Steven Moreno, a general contractor and framing specialist who is on every project from scope meeting through final walkthrough. ADU jobs are all about connecting new structure to old—Steven walks the property to read the foundation, frame, and rooflines before the first excavation or opening is made. He checks bearing paths, shear walls, and tie-in points directly before the ADU layout is finalized, so framing, openings, and utilities are scoped in sync with the main house. Because ADUs demand real structural assessment at the start, Steven’s framing background means what gets built is permitted, solid, and ready for inspection the first time out.
WHY PROPERTY OWNERS CHOOSE US
5 Star Rated ★
Licensed & Insured ⛨
ABOUT US
Ridgeline Western Construction
who we are
Ridgeline Western Construction is owner-operated by Steven Moreno, a general contractor and framing specialist who is on every project from scope meeting through final walkthrough. For us, general contracting means staying hands-on: framing and carpentry self-performed, direct field management during every sequence, and all licensed subcontractors signed onto a unified schedule. Each job starts with engineering and permitting mapped out and ends with a permit record the city and owner both accept as final. Every decision gets made face to face on the project, not handed down. That’s how we deliver accountable completion on each project, with all trades managed and every phase closed out properly.
Frequently Asked Questions
Yes. Ridgeline Western Construction is a licensed California Class B general building contractor, fully insured.
Our license number is #1147197Ridgeline Western Construction is based out of San Bernardino serving them and communities throughout southern California including Riverside, Los Angeles, and Orange County.
If you don't see your city listed, reach out and we'll confirm coverage.Framing, home additions, ADU construction, new home construction, whole-home remodeling, structural work, fire damage rebuilds, and commercial construction in Fontana, CA & throughout San Bernadino. The Owner Steven Moreno is an expert in framing and carpentry with anything falling outside of expertise being managed through him allowing you to have your building under one contract.
Yes. Every starts with engineering and permitting mapped out, and closes with inspections and a completed permit record from the building department. You get documentation for every phase.
Framing and carpentry are performed by us. Electrical, plumbing, HVAC, and roofing are handled by licensed subcontractors that we schedule and manage under the same contract that way you have one point of contact for your project.
Call or text Steven at +1 (909) 676-2814. Go over your project, plans or interest in a plan.. Then he'll walk through the scope and put together an estimate for you to continue
What Our Clients Say about us..
"I connected with Steven Moreno at Ridgeline Western Construction about a year ago when I was scoping out a project. Steven’s knowledge blew me away from framing, additions, new construction, materials, etc. He broke everything down like it was nothing & in a way that I actually could understand. The company is based out of Fontana and covers a huge range from San Bernardino and Riverside all the way through Los Angeles and Orange County. So if you’re in that area and need a general contractor that you can rely on then I would highly recommend Ridgeline Western Construction to get the job done right."
- Thomas Shields
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Service Areas
We provide listings of areas we serve if you don't see your city then contact us to confirm.