Adu company — San Diego, CA | AccessoryDwellingUnit Services

Looking for adu company in San Diego, CA? Call AccessoryDwellingUnit Services for a contact a provider — no obligation. Licensed adu builders serve San Diego and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.

About this service

A professional company handles the heavy lifting, including architecture, engineering, permit submittals, and the actual construction labor. You need an experienced team when you want to ensure your unit is built to code, structurally sound, and completed on a predictable schedule. We act as your single point of contact, coordinating every trade and inspection so you aren't managing subcontractors yourself. We provide professional oversight from start to finish. Exact pricing confirmed free on the call.

Frequently asked in San Diego

What are the disadvantages of ADUs in San Diego?

How much does an ADU cost in California?

What are the rules for ADUs in California?

California has state laws that streamline ADU approvals, but local San Diego ordinances still apply regarding setbacks, height, and lot coverage. These rules ensure ADUs fit within the community. Understanding these regulations is key to a smooth process. We can help you navigate these rules for your San Diego home.

Is an ADU allowed in San Diego?

Yes, ADUs are generally allowed in San Diego, with specific regulations set by the city. These rules often depend on your property's zoning and lot size. We can help you determine the specific requirements for your address. Call us to discuss the possibilities for your San Diego property.

What are the advantages of ADUs in San Diego?

The primary advantages of ADUs in San Diego include generating rental income, providing housing for family members, and increasing your property's overall value. They offer a flexible way to add density without significantly changing the neighborhood's character. An ADU can be a valuable addition to your San Diego home. Let's discuss how it can benefit you.

Also serving nearby: El Cajon · Chula Vista · San Marcos · Escondido · Carlsbad

All cities in California →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

1,388,320residents

4,257per sq mile

8ZIP codes served

Serving all of San Diego — population 1,388,320; about 4,257 residents per square mile across 326.1 sq mi. ZIP codes covered include 92101, 92102, 92103, 92104, 92105, 92106, 92107, 92108.

Neighborhoods served in San Diego: La Jolla, North Park, Coronado, Hillcrest, Ocean Beach, Point Loma — and every surrounding area.