


ADU Construction/ Renovation
 
At North County ADU Construction Contractors, we bring over 20 years of experience as an expert ADU contractor serving across northern San Diego County. We specialize in helping you meet your goals regardless of whether you are seeking a custom ADU design, a simple garage conversion (which accounts for 25- 30% of new ADUs in southern California, according to the California Department of Housing), or a stylish backyard stand-alone guesthouse ADU. Our expertise also includes prefab ADUs and shipping container ADUs tailored to your property’s needs, budget, and long-term goals.
We are a trusted ADU contractor and ADU builder. We quarterback every step of the process—from designing ADU floor plans, handling zoning regulations and permits, to financing guidance, clear through to final construction. We have experience in creating ADU additions for extended family, building granny flats for multi-generational living, designed ADU style home offices, and developed on property rental units that have generated reliable income for homeowners.
When you choose North County ADU Construction Contractors, you get more than construction—you get a competent partner dedicated to high-quality craftsmanship, open communication, and the long-term results you seek.
At North County ADUs we specialize in interpreting and applying San Diego County's specific ADU regulations and building codes. These codes vary between cities like Carlsbad, Oceanside, and Encinitas, etc.
Our contractors maintain current knowledge of setback requirements, height restrictions, and parking regulations unique to each jurisdiction. This expertise prevents costly mistakes and redesigns.
We can identify potential zoning issues before construction begins. We help determine the maximum allowable square footage and optimal placement on your property.In addition to ADU construction,
North County ADU Construction handles all types of renovations; everything, from loft bathrooms to complete home renovations. Our process is transparent, so you get the design you want, within budget, and on time. We also have a partnership with a fine cabinet maker South Bend, IN
Across north San Diego County, property owners choose us for stress-free ADU projects. With 500+ completed builds and a 96% satisfaction rate, based on our 2024 post-construction survey, we deliver full-service design, permitting, and construction for a variety of ADUs, including garage conversions, and junior ADUs (JADUs). We are also skilled in detached new construction ADUs, modular and prefab ADU installations, and even ADU remodeling to update existing living spaces. We are a locally based business. So we know how to navigate San Diego County’s complex zoning ordinances and regulations. At North County ADU, you will have peace of mind knowing you have a team committed to excellence in every aspect of your project. 
Types of ADUs We Build
In all, we build 13 different types of ADUs in North San Diego County, including garage conversions, detached backyard units, modular homes, and second-story additions—all tailored for comfort, local code compliance, and long-term value.
List of Services
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 Strand Alone Backyard ADUsItem Link List Item 1
A separate free-standing living unit built in your backyard—typically up to 1,200 square feet. It’s ideal for rental income, multigenerational living, or guest accommodations.
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 Attached Room AdditionsItem Link List Item 2
This type of ADU is constructed as an extension to your existing home. The additions range from 400 to 1,200 square feet, it offers extra living space with direct access to the main living space.
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 Garage ConversionsItem Link List Item 3
Converted garages generally range from 200 to 400 square feet in size. It's a legal living space in San Diego County, which isperfect for creating an independent rental or in-law suite.
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 Junior ADUs (“JADU”s)Item Link List Item 4
A smaller, (500 sq. ft.or so) unit built within your existing home. The JADU includes a kitchenette and separate entry—perfect for students, relatives, or caregivers.
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 Basement ADU ConversionsItem Link
Although less common in Southern California, we can convert your basement into a legal living unit (400–800 sq. ft.). Ideal for rentals or creating private living quarters.
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 Multi-Unit Property ADUItem Link
Add 1–2 ADUs to a duplex or triplex. Maximizes rental income while staying compliant with San Diego County law.
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 Above-Garage ADUItem Link
We can add 400–1,000 sq. ft. above your existing garage space. This can offer private, elevated living space with a separate entry.
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 Shipping Container ADUsItem Link
We can convert shipping containers (approx. 160–320 sq. ft.) into new compact rental units or studios. This option is eco-friendly and ideal for stand alone / backyard use.
 
In addition to ADU construction, we are one of the top kitchen and bath renovation firms in north San Diego County, CA


How it works
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1. Send a request
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2. Take measurements
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3. Approve budget
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4. Start project
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5. Finish on schedule
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Testimonials
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“Hands down, this was the easiest home renovations project I've ever experienced. Not a single delay or extra expense.”
Lucy Monroe
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“Hands down, this was the easiest home renovations project I've ever experienced. Not a single delay or extra expense.”
Lucy Monroe
"
“Hands down, this was the easiest home renovations project I've ever experienced. Not a single delay or extra expense.”
Lucy Monroe









