General Contractor in Rancho Cucamonga

Green Design and Build is a licensed general contractor (CSLB #1110975) based at 16120 Sherman Way in Van Nuys and working across western San Bernardino County, including Rancho Cucamonga, about an hour and a quarter east by the 210 outside rush hour. We are a full-service residential general contractor and design-build remodeler for projects of every size — kitchens, bathrooms, ADUs, room additions, roofing, patio covers and whole-home renovations — serving homeowners across Los Angeles County, Orange County, Ventura County, western Riverside County and western San Bernardino County. Led by Dekel Sofer, we have completed hundreds of projects and hold a 4.7-star rating across 146 Yelp reviews.

Rancho Cucamonga runs from the 10 up to the base of the San Gabriel Mountains, and the house you own depends on where on that slope it sits: half-acre equestrian lots in Alta Loma, 1970s and 1980s tracts through the middle, and master-planned HOA communities in Terra Vista, Victoria and Etiwanda. The city permits everything online, and its northern edge is in the state’s fire hazard severity zones. This page covers what that means for a residential project.

Rancho Cucamonga’s own permits

The city’s Building and Safety Services are at 10500 Civic Center Drive, with in-person help Monday to Thursday 7 AM to 4:30 PM, permitting questions at (909) 488-4668 and inspections at (909) 477-2710. Rancho Cucamonga does not issue permits over the counter: every application is filed through the city’s Online Permit Center, resubmittals after the first plan check are reviewed within five business days, and inspections are scheduled through the same account with next-day availability, Monday through Thursday between 8 AM and 5 PM. That is one of the more predictable permit systems in Southern California, and a well-prepared set moves through it quickly. We open the case, upload the set, clear corrections and schedule every inspection.

Three things shape Rancho Cucamonga projects more than the code itself:

• Fire zones. The State Fire Marshal’s fire hazard severity zone maps for the city went to public review through the Rancho Cucamonga Fire District in April 2025. The neighborhoods against the foothills fall in those zones, and additions and new structures there use the state wildland-urban interface standards: a Class A roof, ember-resistant vents, ignition-resistant siding and tempered glazing. We verify the zone by address before we design.
• HOAs. Terra Vista, Victoria, the Etiwanda enclaves built since the 1990s and most other master-planned tracts have associations that review exterior changes — additions, second stories, patio covers, ADUs — before the city issues a permit. Alta Loma is one of the few parts of the city where most lots have no association.
• Wind, heat and the foothill soils. Santa Ana winds come down the Cajon Pass and across the alluvial fans every fall, so patio covers here are engineered for wind exposure, not copied from a coastal design. Summers run well above 100°F in Climate Zone 10. The foothill lots sit on decomposed granite and cobble that make excavation slow and footings deep, and the scarp of the Sierra Madre fault zone is visible at the north end of Etiwanda Avenue, so lots along the mountain front may fall in a state earthquake fault zone with its own setback rules.

Electrical service changes go through Southern California Edison; water and sewer connections go through the Cucamonga Valley Water District.

Rancho Cucamonga housing stock, by area

Alta Loma and the foothills (1960s–1980s, with custom estates). The north side of the city, with older ranch homes, custom estates and half-acre and larger lots, many under an Equestrian/Rural Overlay with access to the bridle trails. Slab and raised foundations, big attics and lots with room for a detached ADU, a barn conversion or a real outdoor kitchen. Fire-zone rules apply along the mountain front.

The central tracts along Foothill Boulevard and Base Line (1970s–1990s). Single-story and two-story ranch and stucco tracts on 7,000 to 10,000-square-foot lots, the Route 66 corridor of the city. Kitchen remodels that open the wall to the family room, rear additions, garage conversions and re-roofs are the common projects.

Terra Vista, Victoria, Etiwanda and Day Creek (1990s–2010s). Two-story stucco-and-tile homes on HOA lots around Victoria Gardens, many on post-tension slabs, with lot sizes from about 6,500 square feet up to a quarter acre and larger in the older Etiwanda pockets. Finish-level remodels, outdoor living and pool decks, and ADUs designed for HOA review.

ADUs in Rancho Cucamonga

Rancho Cucamonga permits ADUs and junior ADUs under Chapter 17.100 of its Municipal Code. A detached ADU may be up to 1,200 square feet; an attached ADU up to 50 percent of the main house or 1,200 square feet, whichever is less; both keep a four-foot setback from the side and rear property lines, with detached height limits of 16 to 18 feet depending on transit distance. A junior ADU is 220 to 500 square feet inside the walls of the house, with the owner living in either the house or the JADU. ADUs do not need fire sprinklers if the main house has none, and a new detached ADU provides one parking space unless a state exception applies. Under state law, a permit for a pre-approved or previously approved detached ADU plan must be decided within 30 days. Alta Loma’s large lots and the older Etiwanda parcels are the best candidates for a detached unit; in the HOA communities the association reviews the design first. Our ADU rules calculator shows the state-law floor for your lot, and our guides on how much it costs to build an ADU and garage conversion cost explain the budget.

What we build in Rancho Cucamonga

• Kitchen remodeling — opening 1970s and 1980s kitchens to the family room; finish-level remodels in the Victoria and Terra Vista homes. See our kitchen remodel cost guide.
• Bathroom remodeling — see how much a bathroom remodel costs.
• ADUs and garage conversions — detached units on the Alta Loma lots, conversions in the tracts, designed for HOA review where it applies.
• Room additions — rear additions and second stories; see our room addition cost guide.
• Whole-home renovations of the older Alta Loma and Cucamonga homes. See our remodeling services.
• Foundation and structural work — footings in the foothill soils, slab repair, seismic bolting on raised foundations. See warning signs your foundation needs repair.
• Roofing — cool-rated tile and shingle, Class A assemblies in the fire zones; see our roof replacement cost guide.
• Patio covers, pavers and outdoor living — engineered for the wind; see our patio cover cost guide.
• Concrete, retaining walls, artificial turf, fencing, outdoor kitchens and decks and landscaping and irrigation.
• Windows and doors with low-E and tempered glass, flooring and painting with coatings specified for sun exposure.
• Plumbing and electrical upgrades as part of remodels, performed by licensed tradespeople.

Permits in Rancho Cucamonga: how we run it

Fire zone and HOA first, then the city. We verify the fire hazard zone and any earthquake fault zone by address, prepare the HOA architectural package where one applies, and submit it before the Online Permit Center set so the two match. Plans, structural engineering and Title 24 energy compliance go in as one set; we clear corrections within the city’s five-day resubmittal cycle and book next-day inspections through to final. Our San Bernardino County page covers the rest of the western county — Ontario, Upland, Montclair, Chino, Chino Hills and Fontana — and explains where our service area ends.

Frequently asked questions

Can I build an ADU in Rancho Cucamonga?

Yes. Under Chapter 17.100 of the Municipal Code a detached ADU may be up to 1,200 square feet and an attached ADU up to 50 percent of the house or 1,200 square feet, with four-foot side and rear setbacks; a junior ADU is 220 to 500 square feet inside the house. Sprinklers are not required if the main house has none, and a pre-approved plan must be decided within 30 days under state law. HOA communities review the design first.

Is my Rancho Cucamonga home in a fire zone?

If it is in Alta Loma, north Etiwanda or anywhere against the foothills, possibly. The State Fire Marshal’s fire hazard severity zone maps for the city went to public review through the Rancho Cucamonga Fire District in April 2025, and a home in a Very High zone builds additions and new structures to the state wildland-urban interface standards. We verify the zone by address before we design.

Will my HOA need to approve my remodel?

In Terra Vista, Victoria, the newer Etiwanda enclaves and most master-planned tracts, yes for anything visible from outside: patio covers, additions, ADUs, new windows and exterior colors. Interior kitchen and bathroom remodels generally need no HOA approval. Much of Alta Loma has no association.

Who issues building permits in Rancho Cucamonga?

The City of Rancho Cucamonga Building and Safety Services at 10500 Civic Center Drive, entirely through its Online Permit Center; the city does not issue permits over the counter. Resubmittals are reviewed within five business days and inspections are available the next day, Monday through Thursday.

How far is Green Design and Build from Rancho Cucamonga?

About 60 miles, an hour and a quarter by the 210 outside rush hour and closer to two hours in it. We group Inland Empire site visits into the same days, and once a project starts the crew assigned to it is on site every working day until it is finished.

Are you licensed to work in Rancho Cucamonga?

Yes. A California contractor’s licence is valid statewide, so CSLB #1110975 covers Rancho Cucamonga the same as Van Nuys. We are licensed, bonded and insured, and the licence and workers’ compensation can be verified on the CSLB site.

Ready to talk about your Rancho Cucamonga project?

Send us the address and what you want to build. We will tell you whether the lot is in a fire zone or an HOA, what the Online Permit Center submittal needs, and what the schedule looks like. The site visit and the written estimate are free.