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San Diego ADU Builder

ADU Construction
San Diego, CA

Complete Builders Inc builds accessory dwelling units across San Diego County with our own crew. Detached ADUs, garage conversions, and attached units — from foundation to final walkthrough.

Get a Free Estimate (619) 295-3123
$1,500–$3K+
Monthly rental income potential
6–10 Mo
Typical build timeline
100%
Primarily in-house crew
Add a Rental Unit

Built by Our Team, Start to Finish

An ADU is one of the smartest investments a San Diego homeowner can make — adding rental income, increasing property value, and providing flexible living space. Complete Builders Inc handles the entire process with our own licensed crew.

Our crew handles the majority of phases from foundation to finish.

  • Detached ADU construction
  • Garage conversion ADUs
  • Attached ADUs & junior ADUs (JADUs)
  • Foundation, framing & structural work
  • Plumbing, electrical & HVAC
  • Insulation, drywall & finish work
  • Kitchen & bathroom build-out
Request a Free Quote →
Completed detached ADU white navy siding iron gate San Diego - Complete Builders Inc
Our Work

Recent ADU Projects by Our Own Team

Every project built by our own licensed crew — with minimal use of outside specialists.

Project Sequence — Two-Story ADU Build
During Two-story ADU framing and window install San Diego - Complete Builders Inc

Framing & Window Install

During ADU steel exterior staircase construction San Diego - Complete Builders Inc

Steel Staircase — Construction

Near Complete Two-story ADU near completion white stucco exterior dark trim staircase San Diego - Complete Builders Inc

Exterior Stucco & Staircase

Featured Project — Completed

Apartment Renovation — Gut to Studs

San Diego · Full gut-to-studs renovation — new kitchen, bathroom, bedroom, living area & in-unit laundry.

After Apartment renovation dark cabinets quartz counters stainless appliances San Diego - Complete Builders Inc

Kitchen — Dark Shaker Cabinets & Quartz

After Apartment renovation open kitchen island bar stools San Diego - Complete Builders Inc

Kitchen — Open Layout with Island & Bar Seating

After Apartment renovation bathroom stone tile glass shower San Diego - Complete Builders Inc

Bathroom — Stone Tile & Glass Shower

After Apartment renovation living area hardwood floors mini split San Diego - Complete Builders Inc

Living Area — New Floors & Mini-Split

After Apartment renovation bedroom closet recessed lighting San Diego - Complete Builders Inc

Bedroom — Closet & Recessed Lighting

After Apartment renovation in-unit stacked washer dryer San Diego - Complete Builders Inc

In-Unit Laundry — Stacked W/D

Project Sequence — ADU Construction Progress
Before ADU foundation rebar and forms before pour San Diego - Complete Builders Inc

Foundation — Rebar & Forms

During ADU cabinet installation in progress San Diego - Complete Builders Inc

Cabinet Installation

How It Works

Our Simple Process

01

Free Estimate

We visit your home, assess the site, and give you a detailed written quote — no pressure.

02

Design & Planning

We coordinate all design details and work through the planning phase with you before construction begins.

03

Our Crew Builds

Our own team handles the majority of trades — the same trusted team throughout your project.

04

Final Walkthrough

We walk through the finished ADU with you and handle any final items before handover.

Service Areas

ADU Construction Across San Diego County

Our crew serves all of San Diego County — from La Jolla to Escondido, North Park to the coast.

San Diego
La Jolla
Del Mar
North Park
Mission Hills
Point Loma
Ocean Beach
Pacific Beach
Hillcrest
Kensington
Clairemont
Mira Mesa
Escondido
El Cajon
Santee
Poway
Spring Valley
FAQ

Common Questions About ADU Construction

ADU costs in San Diego typically range from $150,000 to $350,000+ depending on size, type, and finishes. Garage conversions are generally on the lower end. We provide free detailed estimates.
From start to completion, most ADUs take 6–10 months depending on size and complexity.
We self-perform the majority of every project with our own licensed crew. When highly specialized work is needed, we use the same trusted tradespeople we have worked with for years.
Yes. ADUs in San Diego can be rented out as long-term rentals. Many of our clients generate $1,500–$3,000+/month in rental income from their ADU.
We build detached ADUs, attached ADUs, garage conversion ADUs, junior ADUs (JADUs), and full apartment gut-to-studs renovations. We can advise on which option works best for your property and lot.

Ready to Build
Your ADU?

Our crew is ready. Estimates are always free.

Call (619) 295-3123

Get Your Free ADU Estimate

Tell us about your project and we'll get back to you within one business day.

Your info is private and only used to contact you about your project.

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