Emerald Lake Hills · San Mateo County
ADU Design & Build in Emerald Lake Hills, California
Steep, wooded lots above the bay are exactly where a modular ADU pays for itself, months of site work replaced by a single set day.
Building ADUs in Emerald Lake Hills, California
SHAPE designs and builds accessory dwelling units for homeowners in Emerald Lake Hills, California, across The winding streets above Emerald Lake, the Edgewood Park edge, and the hillside lots with bay and bridge views.
Emerald Lake Hills is steep, wooded, and view-driven. Access and grading dominate the budget on conventional builds here, which is exactly where a factory-built module set by crane changes the math.
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 Emerald Lake Hills building department.
Emerald Lake Hills ADU Rules at a Glance
- Setbacks: California state law caps rear and side setbacks for new ADUs at 4 feet, and Emerald Lake Hills 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: Emerald Lake Hills is an unincorporated San Mateo County community that follows California ADU law; slope, access, and tree-protection rules shape what each lot can support, and we confirm all three during feasibility.
- 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 Emerald Lake Hills lots.
SHAPE handles the full permit package with the Emerald Lake Hills 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 Emerald Lake Hills 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 Emerald Lake Hills.
- 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 Emerald Lake Hills?
- 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 Emerald Lake Hills depends on size, finishes, utilities, access, and site conditions.
- How long do permits take in Emerald Lake Hills?
- California law requires ministerial ADU review within 60 days of a complete submittal. Real-world timelines in Emerald Lake Hills typically run 2–4 months including corrections. SHAPE manages every submittal and response with the Emerald Lake Hills planning department.
- Do I need to add parking for an ADU in Emerald Lake Hills?
- 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 Emerald Lake Hills.
- What size ADU can I build in Emerald Lake Hills?
- Emerald Lake Hills is an unincorporated San Mateo County community that follows California ADU law; slope, access, and tree-protection rules shape what each lot can support, and we confirm all three during feasibility. 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 Emerald Lake Hills?
- Yes. California state law allows long-term (30+ day) rentals of ADUs statewide. Short-term rentals are set by the city, Emerald Lake Hills, 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 Emerald Lake Hills 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.
