ADUs & Guest Houses in San Diego

California law strongly favours accessory dwellings, and San Diego has leaned into it further than most.

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San Diego has been one of the more enthusiastic adopters of California's accessory dwelling rules, and the result is that a great many lots here can carry a second unit that could not a few years ago.

The building is the straightforward part. What decides the project is what your specific parcel permits - and on canyon and coastal lots that answer is less obvious than elsewhere.

The interior of a compact guest unit opening to a patio

What's included

ADUs & Guest Houses

  • Feasibility against state and local ADU standards
  • Detached, attached, above-garage and conversion options
  • Architectural and structural drawings
  • Utility strategy - shared or separately metered
  • Kitchen, bathroom and laundry installation
  • Independent HVAC and electrical service
  • Title 24 compliance for the new dwelling
  • Permitting through to final sign-off

How it works

Our process

  1. Feasibility

    Permitted size, height, setbacks, slope and access for your specific parcel.

  2. Design

    A unit that works as an independent home, with privacy for both households.

  3. Permitting

    Drawings submitted with utility and energy documentation.

  4. Construction

    Foundation, shell, systems and finishes with staged inspections.

  5. Close-out

    Final inspection and handover as a legal dwelling.

Building in Broward

What this means in San Diego

State law caps how restrictive local ADU standards can be and sets review timelines, and San Diego has gone further than the minimum in encouraging them. In practical terms that means more lots qualify than owners assume, and the additional parking requirement that used to kill projects frequently does not apply.

Canyon lots are the local complication. Slope, access for construction, and brush management setbacks between structure and vegetation can all constrain where a detached unit can physically sit - sometimes more than the zoning does. On coastal parcels, coastal zone review may add a layer as well.

Utility capacity is the practical one. An older panel often cannot carry a second dwelling without an upgrade, and on a detached unit the trench run for services is a real line item worth knowing about before design rather than after.

Questions

Frequently asked

Do I need extra parking?

Frequently not - state law removes the requirement in a range of common situations. It depends on your parcel, which feasibility settles.

Can I build one on a canyon lot?

Often, but slope, access and brush management setbacks decide where it can sit. That is exactly what we establish first.

Should I meter it separately?

If it will ever be rented, usually yes. It costs more up front and makes the unit far simpler to run.

Testimonials

Happy Clients

★★★★★

“They are an amazing construction company. They gutted and redesigned my entire kitchen, created an island, opened up the space to the living room and the entire front of the house. My house looks completely different and much, much more inviting. They make great suggestions. They stayed within the budget and even gave more than what was originally discussed for the price. They have an awesome team, and they are reasonably priced AND ON TIME with the schedule. And, they were always available to discuss any questions, and so on. I will not go anywhere else for my construction needs.”

Cheryl Tiano
Cheryl Tiano

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Ready to start your project in San Diego?

Start with a free consultation. Tell us about the project and we will talk through scope, budget and what is realistic.

Book a Free Consultation Call (888) 610-5525