JADU & ADU garage conversions for Sunnyvale homeowners

It depends on your goal. A JADU is faster to permit and cheaper to build since it shares utilities with the main house, but a full ADU rents independently and tends to be what Sunnyvale homeowners choose when the plan is to lease it out separately given the area's rental demand. We'll walk through both against your budget and goals.

A JADU stays within your garage's existing footprint, is capped at 500 square feet, and can share utilities with the main house — usually a simpler, faster permit. An ADU can be larger or detached, requires independent utilities, and has no owner-occupancy requirement.

It depends on project type and the city's current plan check volume — a JADU with shared utilities typically moves faster than a detached ADU with new utility connections. We'll give you a realistic timeline once we've reviewed your specific garage and plans.

Yes — we prepare the Title 24 energy calculations and CF1R documentation as part of every permit package, and manage plan check correspondence directly with the city so you're not the one interpreting correction letters.