We turn underused spaces into the rooms, rentals, and living areas your property actually needs.
Trusted by homeowners in San Diego and surrounding areas
Design, permits, and construction all under one roof. You get a single point of contact instead of juggling multiple contractors.
We know the local codes and work directly with the city's Development Services Department. That means faster approvals and fewer headaches for you.
You get a detailed estimate before any work begins, and we don't hit you with surprise charges halfway through. What we quote is what you pay.

We design and build detached and attached accessory dwelling units from the ground up. Every ADU is custom-planned to fit your lot, your goals, and San Diego's local codes.

Turn your existing garage into a livable space without the cost of building from scratch. Garage conversions are one of the fastest ways to add square footage to your San Diego home.

We remodel kitchens that actually work for the way you cook and live. From layout changes to full gut renovations, we handle every detail.
We handle ADU builds, home additions, kitchen and bath remodels, and garage conversions throughout San Diego County. Each project gets a dedicated point of contact so you always know what's happening and what comes next.
Call or send a request with the property details, the service you need, and anything important about the project in San Diego.
We review the request, explain the service path, and make the scope feel easy to understand before work begins.
The work is completed with the same focus on communication, professionalism, and follow-through that customers expect from North Star ADU San Diego.
North Star ADU San Diego should feel established, local, and easy to hire. The system now uses one clean home-services design language instead of changing the whole visual style by category.
Design, permits, and construction all under one roof. You get a single point of contact instead of juggling multiple contractors.
We know the local codes and work directly with the city's Development Services Department. That means faster approvals and fewer headaches for you.
You get a detailed estimate before any work begins, and we don't hit you with surprise charges halfway through. What we quote is what you pay.
We choose materials and construction methods that hold up to coastal weather, salt air, and year-round sun. Your remodel should look great five years from now, not just on move-in day.
The website is built to make the business feel professional, easy to contact, and grounded in the neighborhoods it serves.
"They built a detached ADU in our backyard in Clairemont and the whole process was way less stressful than I expected. The crew was respectful of our space and the finished unit looks amazing — our tenant moved in two weeks after completion."
"We hired North Star to remodel our kitchen and master bath at the same time. They kept everything on schedule and the final result is exactly what we wanted — clean, modern, and built to last."
"After getting quotes from four different contractors, North Star was the only one that gave us a clear breakdown of costs and a realistic timeline. They converted our garage into a studio for my mother-in-law and it turned out beautifully."
Have a question? We've got answers. If you don't see what you're looking for, give us a call.
Call (858) 751-6863ADU costs in San Diego typically range from $150,000 to $350,000 depending on size, site conditions, and finishes. A garage conversion usually comes in on the lower end since the shell already exists. We provide detailed estimates after a free site visit so you know exactly what to expect before committing.
Yes, all ADUs in San Diego require building permits from the city's Development Services Department. California state law has streamlined the process significantly, but there are still local requirements around setbacks, height, and utility connections. We handle the full permit process for every project we take on.
A kitchen or bathroom remodel usually takes 4 to 8 weeks depending on the scope. ADU construction typically runs 6 to 10 months including the permit phase. We give you a realistic timeline upfront and keep you updated weekly so there are no surprises.
In most cases, yes. California's ADU laws allow units on lots as small as 1,200 square feet under certain conditions. Setback and size requirements vary, but many San Diego homeowners are surprised by what's possible. We evaluate your specific lot during our free consultation.
We handle everything — design, engineering, permits, and construction. Having one team manage the full process means fewer delays and better communication. You won't need to hire a separate architect or chase down permit approvals on your own.
Almost always, yes. ADUs in San Diego can add significant value because they generate rental income and increase usable square footage. Kitchen and bathroom remodels consistently rank among the highest-ROI home improvements. The exact return depends on your neighborhood and the quality of the work.
Contact us today for a free, no-obligation estimate. We serve San Diego and surrounding areas.