Cost of building an ADU in San Jose

[Account Closed]

I was wondering what will be a cost of building an apartment quality 1000 sq ft. ADU unit (2 bed/2 bath/ 2 story) in the san francisco bay area. any inputs will be appreciated. I am looking for a quote for construction only excluding all the soft costs like architectural,engineering, permit, etc.

[Chen Zhou]

Hello everyone, I recently got permit approval in SJ (Willow Glen) for a 630 sqft attached ADU + 170 sqft addition to the existing unit. I'm happy to share my experience working with architect, the city, and contractors here. It took me about 4 months to get my permit and now I'm 3 months away from completion of the construction. Let me know if you have any specific questions.

I do want to point out that starting from July 2018, owners now can rent out both units without living in the property. With more relaxed rules from July 2018, it makes a lot more economic sense to invest into building an ADU: http://www.sanjoseca.gov/DocumentCenter/View/78534