ADU Builder in Rancho Santa Fe
Custom guest houses and ADUs designed, permitted and built for Rancho Santa Fe's estate lots — and its Covenant design review.
Get your free feasibility check → or call (619) 404-0125Rancho Santa Fe is unlike anywhere else in San Diego County. Most of it is unincorporated County jurisdiction, but the real gatekeeper is the Rancho Santa Fe Association — the Covenant — whose Art Jury enforces strict design review over how a guest house or ADU looks and sits on the land. On large estate lots the opportunity is significant; the path runs through design that earns the Covenant's approval.
Why build an ADU in Rancho Santa Fe?
Covenant Art Jury experience
Inside the Covenant, design review often matters more than county rules. We design guest houses and ADUs to earn Art Jury approval.
Estate-scale design
Large lots allow beautiful, well-sited ADUs and guest houses that complement the main residence.
One accountable team
Architecture, permitting and construction under one roof — one contract, one point of contact.
Rancho Santa Fe ADU rules at a glance
| Jurisdiction | County of San Diego + RSF Covenant |
|---|---|
| Max detached ADU | Up to 1,200 sq ft (where lot coverage / FAR allow) |
| Design review | RSF Covenant Art Jury review applies |
| ADUs per lot | 1 ADU + 1 JADU (County baseline) |
| Coastal permit | Undetermined in the small coastal-zone portion |
| Owner-occupancy | Not required for ADUs (required for JADUs) |
County rules set the baseline, but the RSF Covenant's Art Jury controls aesthetics and siting — often more than the county does. Plan for that review from the start. See our San Diego ADU regulations page.
What it costs
Rancho Santa Fe projects are typically bespoke, estate-quality builds at the higher end of the cost spectrum. We give you a real budget in your consult — see our 2026 cost guide.
How we work — design, permits & build under one roof
- Free feasibility check — we confirm your lot's exact rules and what fits.
- Custom design + 3D — we refine the layout and show you the result.
- Permitting — full plan set, structural, and the coastal permit if required.
- Construction — built by our team, on a defined schedule.
- Keys — final inspection, certificate of occupancy, and warranty.
See what your Rancho Santa Fe property can build
We'll confirm your exact rules, what fits your lot, and a realistic budget and timeline — free, with no obligation.
Book your free feasibility check →Rancho Santa Fe ADU — frequently asked questions
Do I need Art Jury approval for an ADU in Rancho Santa Fe?
What jurisdiction governs ADUs in Rancho Santa Fe?
How big can an ADU be in Rancho Santa Fe?
Can I build a guest house on my estate?
How long does the process take in Rancho Santa Fe?
Keep exploring
Note: ADU rules change and vary by lot and overlay. Figures reflect our reading of state and local rules as of May 2026 and are not legal advice — we confirm your exact, current requirements in your free feasibility check. IL Total Design & Build, CSLB #1058676.