BNC Builders Inc. is a San Diego County ADU contractor offering detached, attached, garage conversion & JADU construction. Services include permit management, custom design & financing assistance.
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KSH Construction begins each project with a Discovery Call to discuss pricing, timelines, and fit, followed by an in-home consultation where the team measures the space and identifies structural, plumbing, or electrical constraints.
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Woollard Construction is a family run general contractor specializing in ADUs and bathroom remodels. Formed over 25 years ago in Temecula, California, we deliver professional building projects with care and precision in Temecula and Murrieta.
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3 Day Kitchen & Bath is a trusted ADU contractor in San Diego offering full-service accessory dwelling unit construction. From garage conversions to detached ADUs, they manage every project phase with a structured, professional approach.
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Family-owned Home Kitchen Bath Remodeling of San Diego offers 20+ years of expert kitchen, bathroom, ADU, flooring, and interior remodeling services. Competitive pricing, 3D design, guaranteed completion dates, and financing options available.
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Harmony Design & Build specializes in ADU construction in San Diego, CA. Services include detached ADUs, garage conversions, attached units & custom designs. Ideal for rental income, in-law suites & added property value.
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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 archi... read more
OneStop 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.
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Solana Beach is a beautiful coastal community in the City of San Diego, where property values and flexible living are priced at a premium. An accessory dwelling unit (ADU) provides you with the opportunity to take advantage of this by increasing y... read more
Suncoast Construction Inc. is a licensed ADU contractor in Oceanside, CA, building detached ADUs, garage conversions, JADUs & attached units per Oceanside's 2022 ADU Ordinance. No short-term rentals permitted.
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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.... read more
SOHO Architecture & Construction offers full-service ADU design and build in San Diego, handling permitting, construction, and project management for detached, attached, garage conversion, and Junior ADUs with transparent communication and a w... read more
CSL Quality Construction is a trusted ADU contractor in San Diego County, offering full-service design, permits, construction, and renovations. ADUs can boost property value by 20–30% and generate rental income.
read moreSan Diego has become one of the most active markets for Accessory Dwelling Units (ADUs) in the entire state of California. Thanks to its high property values, year-round desirable climate, and a persistent housing shortage, homeowners across neighborhoods like North Park, Ocean Beach, and Chula Vista are turning to ADU contractors in San Diego to maximize their property's potential. The city has embraced state-level ADU reform laws, making it easier than ever to build a secondary unit on your property.
Working with an experienced San Diego ADU contractor is essential because local regulations can be complex. San Diego follows California state law, which allows ADUs on most single-family and multi-family residential lots. Key rules include:
San Diego has streamlined its ADU permitting process through the Development Services Department (DSD). The city offers pre-approved ADU plans, which can significantly reduce approval timelines. A qualified ADU builder in San Diego will handle the permit application, architectural drawings, structural engineering, and coordination with city inspectors. Typical permit approval times in San Diego range from a few weeks for pre-approved plans to several months for custom designs.
Choosing the right contractor is critical to a successful ADU project. Reputable ADU contractors in San Diego will offer end-to-end services, including design, permitting, construction, and final inspection. When evaluating contractors, look for:
The cost to build an ADU in San Diego typically ranges from $150,000 to $350,000 or more, depending on size, type, and finishes. However, given San Diego's strong rental market — with average rents among the highest in California — homeowners can often see a strong return on investment. A well-built ADU can generate $1,500 to $3,000+ per month in rental income, making it a smart long-term investment in one of America's most competitive real estate markets.