Top ADU Builder in Riverside County | Design + Build Guide
- Kevin Morrison
- May 13
- 2 min read
Updated: Dec 14
Top ADU Builder in Riverside County | Design + Build Guide
Thinking about building an ADU on your property? You’re not alone. With housing prices rising and California laws making it easier to add extra living space, Accessory Dwelling Units (ADUs) have become one of the smartest ways to invest in your property.
At San Gorgonio Builders, we’ve completed over 45 ADUs across Riverside County, from detached guest homes in Redlands to garage conversions in Palm Springs. Here’s what you need to know before getting started.
What Is an ADU? An ADU (Accessory Dwelling Unit) is a secondary home built on the same property as a main house. They can be:
Detached ADUs – standalone structures in your backyard
Attached ADUs – built as an extension to the main home
Garage Conversions – converting an existing garage into living space
Above-garage or interior ADUs – built above or within the main structure
These units can be used as in-law suites, rental units, home offices, or guest houses.
Permit Requirements in Riverside County? Building an ADU requires approval from your local planning department. Most cities in Riverside County allow:
Up to 1,200 sq ft detached ADUs
Garage conversions (with parking solutions)
Reduced setback requirements
Easier permits under California’s ADU laws
We handle all permits and code compliance for you so there are no surprises.
Our Process (Start to Finish)At San Gorgonio Builders, we make it simple:
Site evaluation
Custom design & planning
Permits & city approvals
Full construction
Final inspection & handoff
We’ve built ADUs in Palm Springs, Beaumont, Redlands, Yucaipa, Cherry Valley, and Riverside — and we know how to navigate local codes to get your project done fast and done right.
Ready to Start Your ADU? Whether you’re adding rental income, housing family, or maximizing your property value, a well-built ADU can change everything. Contact San Gorgonio Builders today and let’s talk about what’s possible.
📞 Call: 951-972-9509
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