- Detached ADU
- Attached ADU
- Garage Conversion
- Basement Conversion
- Junior ADU (JADU)
- Prefab / Modular ADU
Detached ADU
Just ADUs
979 Palm Valley Circle, 91915, Chula Vista, CAADUPALS
1420 Kettner Boulevard, 92101, San Diego, CATiny Home Associates
740 Hilltop Drive, 91911, Chula Vista, CAVeteran-owned US ADU & tiny home builder serving San Diego & LA County. Premium materials, ANSI A119.5-compliant builds, Class A fire ratings, 3D design, site assessment, permitting support & NOAH/RVIA certification included.
read moreCrest Backyard Homes - ADU Builders San Diego CA
2982 Ora Avo Terrace, 92084, Vista, CACrest Backyard Homes is San Diego's trusted ADU builder, specializing in prefab, detached ADUs, granny flats & garage conversions. Their all-inclusive team guides homeowners from design to completion, ensuring code-compliant, high-quality accessory dwelling units.
read moreOneStop ADU
2667 Camino del Rio South, 92108, San Diego, CAOneStop ADU is a San Diego County ADU contractor with 25+ years of experience. They offer custom-built detached ADUs from ~$335/sq ft, including solar, permits & plans. Free feasibility studies available. ADA-compliant units offered.
read moreTrueBuild ADU
4901 70th Street, 92115, San Diego, CATrueBuild ADU is an owner-operated ADU builder serving San Diego County, offering detached ADUs, garage conversions, and JADUs. Known for transparent pricing and hands-on service, they deliver quality construction without corporate markups.
read moreADUs & Garage Conversions | Sprawl Design
1893 Lorient Place, 91913, Chula Vista, CASprawl-Design offers expert ADU design in San Diego, including garage conversions, attached & detached units. Starting from $60K, they manage design to construction with local expertise & budget clarity.
read moreNestadu
402 West Broadway, 92101, San Diego, CANestadu is a full-service ADU builder offering custom site-built and prefab ADUs. Site-built units start at $400/sqft; prefab models from $115K. They handle design, permitting, and construction, plus financing guidance including HELOCs and grants.
read moreADUplus consulting
119 Fletcher Parkway, 92020, El Cajon, CAADUplus Consulting Inc., trusted since 1979, offers full-service ADU design, permitting, and construction in California. From detached ADUs to garage conversions, they help homeowners boost property value and generate rental income.
read moreOrganic ADU
4432 Ingraham Street, 92109, San Diego, CACalifornia ADUs (granny flats) add rental income or family housing to existing lots. Detached units up to 1,200 sq ft are allowed. Building costs start at $1,200/sq ft. Hire a specialized ADU contractor in San Diego for permits and zoning compliance.
read moreADU Geeks
2835 Camino del Rio South, 92108, San Diego, CAADU Geeks is a full-service ADU contractor offering planning, design, permitting, and build support. They also provide a $150 online ADU Development Masterclass covering feasibility, financing, and construction, ideal for California homeowners and investors.
read moreRitz ADU Design Build
7878 Clairemont Mesa Boulevard, 92111, San Diego, CARITZ ADU Design Build has served San Diego County since 1965, offering full-service ADU construction including granny flats, garage conversions, backyard offices & rental units. Expert planning, 3D design, permitting & builds that boost property value.
read moreADU O’SIDE
5074 Gold Drive, 92057, Oceanside, CAADU Of Oceanside is a full-service accessory dwelling unit builder in Oceanside, CA, handling design, permitting, and construction. Led by UC Berkeley-certified owner Colin Pond, they specialize in detached ADUs, granny flats, and garage conversions.
read moreMillan Construction | ADU & Remodeling
325 West Washington Street, 92103, San Diego, CAMillan Construction is a San Diego ADU contractor specializing in ADU construction, home remodeling, kitchen & bathroom renovations, structural repairs, and permit management. Known for honest pricing and quality craftsmanship, they offer free consultations.
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