A SIP ADU moves through eight clear stages. Because the shell is manufactured, not stick-built, the on-site timeline is measured in days at the point that usually takes weeks.
Use the placement tool to drop a to-scale ADU footprint on your satellite view. We resolve your jurisdiction, zoning, and assessor parcel from live county GIS and email you a free, branded feasibility summary.
We match a ready-to-assemble model to your goals and lot, then give you a clear budget across kit-only, dry-in, and turnkey delivery. A drafting deposit starts your working plan set.
Your set is drawn to whole SIP modules and PE-stamped by Maple Brook Engineering. We coordinate the plan library, Premier drafting, and any site-specific engineering.
We submit a complete application to your jurisdiction to start California's 60-day ministerial clock. Under 750 sf models stay clear of impact fees where the rules allow.
Premier SIPS manufactures your wall and roof panels to spec. Typical panel lead times run four to twelve weeks while your site and foundation are prepared.
Elkins Build Group erects the SIP shell in days, not weeks, then dries it in weather-tight. Fewer trades, a tighter envelope, less time exposed.
MEP, interior, and finishes are completed to your chosen tier. On turnkey builds, Elkins carries the job to final inspection.
You take delivery of a permit-final, energy-smart second home, ready for family, rental income, or resale value.
You always know who is responsible for each part of your project.
The whole process begins with a free feasibility summary for your lot. No obligation, no sales pressure.