ADU Builder in Rancho Santa Fe
Permitted ADUs in Rancho Santa Fe, with a free 3D rendering before we start.
Planning a high-end ADU in Rancho Santa Fe? Rancho Santa Fe is known for large estate lots, which often leave room for a detached ADU, guest house, or addition. Proactive Edge Developments is a CSLB-licensed San Diego County general contractor. We build ADUs end to end, handle the County of San Diego permit process, and include a free 3D rendering so you see the result before we start. License CSLB #768545.
Permits for a ADU in Rancho Santa Fe
This area is unincorporated, so permits go through the County of San Diego, not a city. The County publishes free pre-designed ADU plans, and it advises owners to contact the local fire district early, because fire setbacks and sprinkler requirements can shape the design. Source: County of San Diego, County ADU information page.
State timeline: when there is already a home on the lot, California law (Gov. Code §66317) requires the city or county to approve or deny a complete ADU application within 60 days.
We prepare the plan set, submit it, answer plan-check corrections, and schedule every inspection through final sign-off.
What your Rancho Santa Fe ADU includes
- Detached & attached ADUs. Standalone backyard units or additions attached to your existing home, designed to maximize rentable square footage on your lot.
- Permit & plan coordination. We manage the entire San Diego ADU permitting process — code compliance, plan checks, and approvals — so you don't have to.
- Built for rental income. Every ADU is designed around return: livable layouts, durable finishes, and a footprint that appraises and rents.
- Free 3D rendering. See your finished ADU before we build it, with our in-house design software — included free for every new client.
Featured project: the Curlew St lot split
At 3680–3682 Curlew St in San Diego, we added a second story to the main house and converted the garage into a separate unit. The owner now has two rentable addresses on one lot. It's the project we point Rancho Santa Fe homeowners to first, because it shows our permitting, structural, and finish work in one place.
Get your project rendered free.
Every new client gets one free 3D rendering, made with our in-house design software — so you see the finished result before a single nail goes in.
ADU Builder in Rancho Santa Fe, answered.
Who issues ADU permits in Rancho Santa Fe?
Rancho Santa Fe projects are permitted by the County of San Diego (Planning & Development Services (unincorporated areas)). This area is unincorporated, so permits go through the County of San Diego, not a city. The County publishes free pre-designed ADU plans, and it advises owners to contact the local fire district early, because fire setbacks and sprinkler requirements can shape the design.
How long does ADU approval take in Rancho Santa Fe?
Under California law (Gov. Code §66317), when there is already a home on the lot, the County of San Diego has to approve or deny a complete ADU application within 60 days. Plan corrections and resubmittals add time, so we give you a written schedule at your estimate.
Have you built in Rancho Santa Fe?
We work across San Diego County. Our featured project is the Curlew St lot split in the City of San Diego; ask us for the closest completed work to your address during your consult.
What does the free 3D rendering include?
One rendering of your Rancho Santa Fe ADU, made with our in-house design software, so you see the result before construction starts. No cost and no obligation.
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