Detached ADU near Valley Center, CA

Casita ADU is a San Diego-based full-service ADU builder handling permitting, design, and construction. As a trusted accessory dwelling unit contractor, they manage every project phase, ensuring on-time, on-budget builds for California homeowners.

California ADUs are self-contained units on single-family lots, offering rental income, family housing, and no land purchase. Build up to 1,200 sq ft. Fassino Development guides homeowners through ADU construction, ensuring local code compliance.

Bastion Structures offers modular concrete masonry homes, ADUs, and tiny houses that are fire-, mold-, and termite-resistant. Models range from 305 SF studios to 3,955 SF homes, ideal for California properties seeking durable, weatherproof living solutions.

Sprawl-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.

Block Contracting specializes in crafting the best Accessory Dwelling Units (ADUs) in Oceanside, CA. Our designs are meant to enhance your property’s value and functionality. Whether you’re seeking a modern guest house, a stylish rental unit, pool house, or a versatile space for family.

California 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.

B&A Construction Inc. is a licensed general contractor in Manteca, CA, with 35 years of experience. Services include ADU construction, garage conversions, kitchen & bathroom remodeling, and room additions across San Joaquin and Central Valley counties.

Nestadu 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.

Veteran-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.

ADU San Diego is a licensed contractor specializing in accessory dwelling unit design and construction across San Diego County. Services include garage conversions, detached ADUs, and JADUs, with costs ranging from $100,000–$400,000.

GW Construction is a San Diego general contractor specializing in ADU construction, home renovations, custom homes, and commercial projects. Services include garage conversions, backyard cottages, home additions, and multi-unit builds.

Motif Architecture offers ADU, JADU, and garage conversion design services in Orange County, CA. Their five-phase process covers space planning, permitting, and construction. Projects include backyard cottages and garage-to-ADU conversions in Costa Mesa and Irvine.

Woolsey Construction is a San Diego design-build firm with 15+ years of experience in custom homes, remodels, and ADU construction. Based in El Cajon, they offer expert project management, clear communication, and quality craftsmanship throughout Southern California.

Streamline Design Group offers ADU design and permitting in San Diego, covering detached, attached, JADU, garage conversions, and multi-family units. Referenced in the State ADU handbook, they deliver permit-ready plans at 40–60% less than architect fees.

Peak Construction and Design LLC builds custom ADUs in Springfield, OR, including detached cottages, attached units, in-law suites, and rental spaces. Expert ADU contractor offering full design-to-build services tailored to your property.