Chino and Chino Hills offer strong incomes, large lots, and growing ADU demand. Hillside specialists and San Bernardino County experts serving the entire Chino Valley.
From detached backyard casitas to garage conversions — full-service design, permits & construction in Chino, CA.
A freestanding backyard unit with its own entrance, kitchen & bath. Highest rental income and biggest property value boost of any ADU type in Chino.
→Repurpose your existing garage into a permitted ADU. $40K–$80K less than new construction — the fastest path to rental income in Chino.
→An addition onto your Chino home. Practical for multigenerational families and lots with limited backyard space. Shares walls and utilities with existing structure.
→Convert a bedroom or interior space into a junior ADU up to 500 sq ft. The lowest-cost ADU path — often permitted faster and under California impact fee thresholds.
→We manage every submission, revision & inspection with Chino's planning department. You never deal with city bureaucracy directly — that's our job.
→ADUs in Chino are governed by City of Chino Development Code and City of Chino Hills Title 16 in conjunction with California ADU statutes (Government Code §66314 (formerly §65852.2)). Compliant applications cannot be denied — the city has no discretionary authority to reject them.
Detached ADUs require minimum 4-foot rear and side setbacks. Front setbacks follow your zone's standard requirements. Maximum size: 1,200 sq ft for detached units. JADUs are capped at 500 sq ft.
Permit fees in Chino run $10,000–$20,000. ADUs under 750 sq ft are exempt from California impact fees — this can save $5,000–$20,000. We always design to this threshold when budget efficiency matters.
The City of Chino currently processes ADU applications in 6–12 weeks. The City of Chino and City of Chino Hills are separate jurisdictions in San Bernardino County. Both follow California's ...
In Chino, Chino Valley has clay-adobe soils on flat areas and decomposed granite on Chino Hills slopes — both require specific foundation approaches we assess during the site visit. We identify all site-specific conditions during the free on-site consultation so there are no cost surprises mid-project.
California Government Code §66314 (formerly §65852.2) generally prohibits HOAs from banning ADU construction. HOAs may enforce objective design standards (materials, colors, architectural style) but cannot deny the right to build. We review your specific HOA rules during the consultation. Your HOA may influence exterior design standards but cannot deny your right to build an ADU on your Chino property.
We've built hundreds of ADUs across Chino Valley / Inland Empire West. Our process is built to keep your project on time and on budget — start to finish.
We visit your Chino property, review your lot and zoning, discuss your goals, and give you a realistic picture — ADU type, realistic budget, and timeline. No sales pressure, just real answers.
Our designers create architectural plans tailored to your lot and Chino's local building codes. Structural engineering, Title 24 energy compliance, and utility plans are all coordinated in-house.
We manage every submission, city response, and follow-up. Typical approval: 6–12 weeks in Chino. We track your application daily and respond to plan check corrections within 48 hours.
Licensed local crews handle everything — foundation, framing, roofing, electrical, plumbing, HVAC, finishes, and all required inspections. Typical detached ADU build: 4–6 months.
We build ADUs throughout Chino and surrounding Chino Valley / Inland Empire West communities — near Chino Hills State Park and the Carbon Canyon Regional Park.
Also serving nearby: Ontario, Montclair, Diamond Bar, and Pomona. Contact us to confirm your address is within our service area.
Average in Chino when an ADU is added — well above construction cost in most markets.
We've built hundreds of ADUs in Chino. We know your inspectors, your soil conditions, and what keeps projects moving — faster and cheaper than contractors without this local knowledge.
Your price is locked before we break ground. No open-ended estimates, no mid-project surprises. What we quote is what you pay — regardless of what we find on site.
Our ongoing relationships with Chino's planning staff mean applications go in complete the first time. Fewer plan check corrections = faster approval = earlier move-in.
Design, engineering, permits, construction — one team, one contract, one point of contact from your first call to the final city sign-off. No subcontracting your project to strangers.
Real-world pricing for Chino ADU projects — 15–25% below LA and San Diego coastal markets.
| ADU Type | Typical Cost Range |
|---|---|
| Garage Conversion | $65,000–$125,000 |
| Junior ADU (JADU) | $32,000–$72,000 |
| Attached ADU | $125,000–$210,000 |
| Detached ADU (500 sf) | $145,000–$200,000 |
| Detached ADU (800 sf) | $195,000–$280,000 |
| Detached ADU (1,200 sf) | $250,000–$340,000 |
| Hillside surcharge | add $15,000–$40,000 |
Estimates include design, permits, all construction trades, and final inspection. Site conditions, soil type, utility distance, slope, and finish level all affect final cost. All estimates are ranges based on typical Inland Empire projects — your actual cost will be determined after a free on-site assessment. We never quote without seeing the property first.
Tell us about your property and goals. A local specialist will be in touch within 1–2 business days to schedule a free on-site visit — no pressure, just real answers.
Mon–Sat 7am–6pm · Typically responds within 1–2 business days
Locally specific guides to help you make informed ADU decisions.
Answers from our team — based on real questions from Chino homeowners.