Construction
San Jose ADU Construction Time: What to Expect in 2026
What if the timeline you’ve seen for a San Jose ADU includes months when no construction is happening? The average adu construction time san jose homeowners ask about is only one part of the schedule: building a detached ADU typically takes four to eight months once construction begins, while design and permitting happen beforehand. Online estimates can blur those stages, making it hard to tell what a contractor’s timeline actually covers.
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