
Design · Permit · Build
ADU Builder in San Marcos, CA
Nucave is a licensed ADU builder serving San Marcos. One team designs, permits and builds your ADU, start to finish.
- Licensed CA contractor, CSLB #1013360
- Design, permits and construction under one roof
- Based in Vista, in business since 2016
Get a free San Marcos ADU consultation
Tell us where to reach you. We usually reply within one business day.
Prefer to talk? (760) 310-2393
Built near San Marcos
Nucave ADUs near San Marcos
Real projects, built by our own crew. Tap any build for the full photo tour.
Building in San Marcos
What we handle for your San Marcos ADU
Every city plays by different rules. These are the ones that shape an ADU here.
The 10-foot separation rule
San Marcos asks for 10 feet eave-to-eave between a detached ADU and the main house, wider than neighboring cities. On tighter lots this one rule often decides the placement, so we check it first.
Two-story setbacks
Two-story designs move your side and rear setbacks from 4 feet to 5 feet. We size and place the unit so the second story works on your lot.
No owner-occupancy requirement
A standard ADU in San Marcos does not require you to live on the property, so it works as a pure rental investment.
How it works
One team from lot check to keys
No handoffs between a designer, an expediter and a contractor. We own every step.
- 1
Lot check
We review your parcel against San Marcos rules: size, setbacks, utilities and any coastal or fire overlays.
- 2
Design and engineering
Floor plan, elevations, structural and Title 24, designed around how you will use the unit.
- 3
San Marcos permits
We submit to the City of San Marcos, answer every correction and keep your permit moving.
- 4
Build to keys
One crew, one point of contact, through final inspection and move-in.
Client reviews
What ADU clients say about Nucave
“Nucave was a lifesaver after another contractor was fired. The workmanship was exceptional, the price was competitive, and the materials were top of the line. They had my back in every way.”
“Nucave brought my ADU vision to life. I had a dilapidated detached garage with many issues, and they guided me in the right direction and helped me overcome obstacle after obstacle with the city of San Diego. They did everything they said they would do and more.”
“Love my new ADU, every detail's exquisite, and I was shocked at how quickly it was done. Vaulted ceilings with skylights make mornings magical. Ryan and his team are absolutely amazing: efficient, attentive, meticulous. If you want a luxury ADU, not a prefab paper-thin build, it's quality.”
San Marcos ADU questions
Before you hire an ADU builder
Free consultation
Ready to build your San Marcos ADU?
Thirty minutes with a licensed ADU builder who knows the San Marcos rules. No pressure, no obligation.



