ADU builders and rules in Encinitas

Encinitas pre-approved ADU plans (PRADU)

Encinitas runs its own pre-approved plan program, the Permit-Ready Accessory Dwelling Unit (PRADU) program. If you searched for “city of Encinitas pre approved ADU plans,” this is it. The city has approved plan sets from two architecture firms, and you work with the firm whose plans you pick.

• Who can use them. The lot must be zoned residential and already have a single-family home, duplex, multifamily or mixed-use building, and the project must meet Fire Department requirements.
• No changes. Encinitas doesn't allow modifications to the approved plans. A change goes back to the plan preparer and then through a standard plan check.
• Still site-specific. You need a site plan showing where the unit goes, which your builder can usually prepare. The plan preparers set their own prices, so the city suggests asking several.
• Faster review. State law gives a city 30 days to act on an ADU permit that uses a pre-approved plan.

Encinitas plans travel: the City of San Diego accepts them too. Compare every regional option in our pre-approved ADU plans guide, and see ADU floor plans for layouts by size.

Encinitas ADU rules in the coastal zone

Encinitas's ADU rules are in Municipal Code § 30.48.040(T), and they are part of the city's Local Coastal Program, so changes go to the California Coastal Commission. In a 2022 review of the city's ADU update, Coastal Commission and city staff agreed to spell out that an ADU or junior ADU needs a coastal development permit if it isn't completely inside the existing house, adds habitable area, or converts non-habitable space. The city is to decide those permits within 60 days where feasible.

The ADU rules the Commission reviewed let an ADU sit 4 feet from side and rear lot lines. Bigger setbacks still apply where the city's coastal bluff, inland hillside, sensitive habitat or scenic view policies require them, including on lots next to a coastal bluff. Converting space wholly inside an existing house or accessory building needs no setback, unless those same policies say otherwise.

Encinitas also sets green building rules. Under its 2024 local building codes, new detached ADUs must meet higher energy performance standards and install solar panels. For the state rules on size, height and unit counts, see California ADU laws and our junior ADU guide.

Encinitas ADU fees

San Dieguito Union takes payment by check, by appointment, at its Encinitas office. For a plan that isn't PRADU, Encinitas's permit page lists the fees that can apply, including permit, school, water, sewer, traffic impact and climate action fees. Under state law, impact fees can't be charged on an ADU under 750 sq ft. For build costs, see what an ADU costs in San Diego or the ADU cost calculator.

Getting an Encinitas ADU permit

The city's ADU page is the starting point for both custom and PRADU projects. For a PRADU permit, you download the checklist and plan set, then take the agency forms to the water, sewer and school agencies, get their signatures, pay their fees and upload the final forms through the CSS Portal before the building permit is issued. A covenant is recorded with the County Recorder.

Before you hire, read how to hire an ADU contractor, check a contractor's license, and compare verified ADU builders in San Diego County.

Common questions