Piedmont · Alameda County
ADU Design & Build in Piedmont, California
Piedmont's historic homes and formal gardens call for an ADU designed to match, stucco, tile, and craftsmanship in keeping with the main residence.
Building ADUs in Piedmont, California
SHAPE designs and builds accessory dwelling units for homeowners in Piedmont, California, across The streets around Piedmont Park, Dracena, Wildwood, and the historic estates near Hampton Field and Mountain View Cemetery.
Piedmont's historic architecture and formal gardens set a high bar for any new structure. Owners here need guest houses and in-law units that match stucco, tile, and trim details, not a generic box in the backyard.
We're a licensed California general contractor (CSLB #1158688) with an in-house architecture and modular construction team. That means one contract, one fixed price, and one team responsible from the first site walk through final inspection with the Piedmont building department.
Piedmont ADU Rules at a Glance
- Setbacks: California state law caps rear and side setbacks for new ADUs at 4 feet, and Piedmont follows that standard.
- Height: Detached ADUs are generally allowed up to 16 feet, or up to 18–25 feet on lots that meet transit or multi-story criteria under state law.
- Maximum size: Piedmont follows California ADU law and permits detached ADUs on most single-family lots, with design review expectations that reward an architect-led submittal.
- JADUs: Junior ADUs (up to 500 sq ft) are allowed inside the existing footprint of the primary home, in addition to a detached ADU on most single-family lots.
- Parking: No replacement parking is required when an ADU is built within one half-mile of public transit, which covers most Piedmont lots.
SHAPE handles the full permit package with the Piedmont planning department, zoning verification, building plans, Title 24 energy, and every correction cycle, so you don't have to learn the code.
Our Process
- Site assessment. We walk your Piedmont lot, confirm setbacks and utility locations, and give you a feasibility read and an all-in price the same week.
- Design. Our in-house architects design the ADU around your lot, your family, and your budget, with fixed pricing before you sign.
- Permits. We submit, respond to every planning and building comment, and drive the file to permit issuance with Piedmont.
- Build. Modules are fabricated in our facility while site work, foundation, utilities, landscaping, runs in parallel. Set and finish happen on site.
Frequently asked
- How much does an ADU cost in Piedmont?
- SHAPE's published prices start at $223,000 for Model 1, $263,000 for Model 2, and $343,000 for Model 2X on a typical lot. The final fixed quote in Piedmont depends on size, finishes, utilities, access, and site conditions.
- How long do permits take in Piedmont?
- California law requires ministerial ADU review within 60 days of a complete submittal. Real-world timelines in Piedmont typically run 2–4 months including corrections. SHAPE manages every submittal and response with the Piedmont planning department.
- Do I need to add parking for an ADU in Piedmont?
- In most cases, no. California state law waives ADU parking requirements when the unit is within a half-mile of public transit, which covers most single-family lots in Piedmont.
- What size ADU can I build in Piedmont?
- Piedmont follows California ADU law and permits detached ADUs on most single-family lots, with design review expectations that reward an architect-led submittal. On top of local rules, California state law guarantees at least 800 sq ft on most single-family lots regardless of local FAR limits.
- Can I rent out an ADU in Piedmont?
- Yes. California state law allows long-term (30+ day) rentals of ADUs statewide. Short-term rentals are set by the city, Piedmont, like most Bay Area jurisdictions, restricts or prohibits stays under 30 days.
Nearby cities we serve
Get a Free Site Assessment
Tell us about your Piedmont lot and what you'd like to build. We'll walk the property, confirm feasibility, and come back with a fixed all-in price, no obligation.
