Home Remodeling, ADUs & Additions in San Ramon
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Our Services in San Ramon
Backyard ADUs, garage conversions and junior ADUsBathroom Remodeling in San Ramon
Primary suites, hall baths and accessible bathroomsKitchen Remodeling in San Ramon
Open layouts, islands, structural and system upgradesHome Additions in San Ramon
Single-story additions and second storiesNew Home Construction in San Ramon
Custom homes and teardown rebuilds
San Ramon General Contractor for ADUs, Additions and Remodels
Axiom Renovation (CA Lic. #1105006) builds ADUs, additions, remodels and outdoor projects in San Ramon. We handle design, City planning review, permits and construction.
Neighborhoods in Dougherty Valley, such as Gale Ranch and Windemere, follow their own development standards, so we check the rules for your specific lot before design starts.
What We Build in San Ramon
- ADUs: detached, attached and junior ADUs, plus garage conversions
- Home additions and second story additions
- New custom homes, including tear-down and rebuild
- Kitchen and bathroom remodels and whole-home renovations
- Outdoor living: pools and spas, outdoor kitchens, pavers and hardscape, and artificial turf, lawns and landscaping
See finished work in our portfolio.
San Ramon ADU Rules at a Glance
- A single-family lot can have an ADU (attached or detached) plus a JADU; a streamlined option allows a detached ADU up to 800 sq ft and 16 ft tall with 4 ft setbacks.
- Detached ADUs can be 150 to 850 sq ft for a studio or one bedroom, or up to 1,200 sq ft with more than one bedroom. Attached ADUs are capped at 50% of the main home. JADUs can be 150 to 500 sq ft.
- Detached ADUs are limited to 16 ft; attached ADUs to 25 ft or the district limit.
- Front setbacks are 20 ft; side and rear setbacks are 4 ft.
- One parking space is generally required, with exemptions such as being within a half mile of a bus stop.
- Rentals must be at least 30 days, with a deed restriction recorded. The City offers nine free permit-ready ADU plans (one bedroom, about 560 to 708 sq ft).
Source: City of San Ramon ADU handout (December 2024).
Rules change often, so we confirm the current standards for your parcel during the site assessment.
Other San Ramon Rules That Affect Your Project
- Trees: on single-family lots that cannot be subdivided, a permit is generally needed only for native oaks 6 in. or more in diameter.
- Fences: up to 7 ft at sides and rear (with the top foot open lattice) and 3 ft in the front setback.
- Design review: minor additions and remodels are reviewed with the building permit; projects with significant visual impact need Administrative Architectural Review.
- Accessory structures: generally limited to 12 ft in height in most residential zones.
Getting Permits in San Ramon
San Ramon uses an online self-service permit portal, and ADU applications are submitted to the Planning Division by email.
We Also Work Near San Ramon
We also build in nearby Danville, Dublin, Alamo, and across the Bay Area. See all of our service areas.
Frequently Asked Questions
How big can an ADU be in San Ramon?
A detached ADU can be up to 850 sq ft with a studio or one bedroom, or up to 1,200 sq ft with more than one bedroom.
Does San Ramon have free ADU plans?
Yes. The City offers nine free permit-ready one-bedroom ADU plans in Craftsman, Mediterranean and Suburban Ranch styles.
Do I need a permit to remove a tree in San Ramon?
On most single-family lots, a permit is needed mainly for native oaks 6 in. or more in diameter.
Do Dougherty Valley homes follow different rules?
Yes. Neighborhoods such as Gale Ranch and Windemere have their own development standards, so we confirm the rules for each lot.