Murray Lampert, San Diego's trusted ADU builder since 1975, offers full design-build services including granny flats, in-law suites, and garage conversions. With 50+ years of experience, they deliver custom, high-quality accessory dwelling units tailored to your needs.
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King Mahdi Builders is an ADU contractor offering detached ADUs, garage conversions, in-law suites, JADUs, granny flats, and casitas. They also handle general home renovation and remodeling projects.
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RITZ 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.
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IEE Designs is a San Diego County design & build firm founded in 1998, specializing in ADU construction and landscape design. Services include detached ADUs, granny flats, casitas, and custom exterior landscaping for residential clients.
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Home 360 Construction Inc. offers full-service ADU construction in San Diego, including detached, attached, and garage conversion units. They manage planning, permits, design, and inspections across San Diego County neighborhoods.
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GetApprovedADU is a consulting firm specializing in ADU and JADU approvals. They assist with detached ADUs, garage conversions, granny flats, and attached units, helping homeowners boost property value and expand affordable housing options.
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TrueBuild 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.
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Classic Home Contractors offers full-service ADU construction in Oceanside, CA, including custom design, garage conversions, detached units & permit handling. Serving neighborhoods like Rancho Del Oro, San Luis Rey & more.
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Proteus Homes is a custom home and ADU builder with 30+ years of experience in the Southwest US. They offer full-service ADU construction, including design, permitting, and panelized off-site fabrication, with move-in-ready homes in under three months.
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IL Total Design & Build is a San Diego ADU specialist offering full-service design, permitting, and construction for granny flats, garage conversions, detached ADUs, and JADUs. They also provide home additions and remodeling across San Diego County.
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Homes by Hedges is an experienced ADU contractor in North San Diego County, building granny flats, casitas & garage conversions. Serving Valley Center, Escondido & more for 25+ years, managing permits & local zoning regulations.
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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.
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Antoon offers a structured ADU construction process in San Diego, covering consultation, design, permitting, and build. With transparent pricing, quality control, and post-construction support, they deliver high-quality accessory dwelling units.
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URBN BLDRS is a specialized ADU contractor helping homeowners plan and build accessory dwelling units. They offer expert guidance, dedicated project teams, and streamlined processes from consultation to construction completion.
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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.
read moreSpring Valley is a unique community in that it is an unincorporated area of San Diego County, meaning it does not have its own city government. This has significant implications for homeowners looking to build an Accessory Dwelling Unit (ADU). Instead of dealing with a local city planning department, all permits, zoning regulations, and building codes fall under the jurisdiction of the San Diego County Planning & Development Services (PDS). Experienced ADU contractors in Spring Valley understand this distinction and are well-versed in navigating county-level requirements rather than municipal ones.
Because Spring Valley falls under San Diego County's authority, ADU projects here must comply with California state ADU laws as well as the San Diego County Zoning Ordinance. Key regulations that local ADU contractors must work within include:
Spring Valley's housing stock consists largely of single-family homes built between the 1950s and 1980s, many of which sit on lots that are well-suited for ADU additions or garage conversions. A knowledgeable local ADU contractor will be familiar with the typical lot sizes, existing infrastructure, and soil conditions common to the area. They will also have established relationships with the San Diego County PDS office, helping to streamline the permitting process and avoid costly delays.
Given the neighborhood's suburban character and lot configurations, the most popular ADU types in Spring Valley include:
When searching for ADU contractors in Spring Valley, California, it is essential to choose a licensed general contractor with proven experience working under San Diego County's permitting system. Look for contractors who offer full-service solutions including design, permitting, and construction. A qualified contractor will help you maximize your property's potential while ensuring full compliance with all applicable county and state regulations.