Submit plans, to scale, with a sheet size of 18" X 24" to 24" X 36" and any other required documents through the Public Permit Portal. Application and plans should be submitted on the Building Permitting Online Portal.The Building Section in the Development Services Division ensures that buildings are compliant with current code in order to maintain a safe community standard. The Design phase typically takes 1-6 months. Most ADU projects take 12-18 months to complete, but some extend to 24 months or more. The City of Santa Clara handles blueprints just for Santa Clara. So I'm thinking it must be the City of San Jose that handles this. The construction process typically takes 6-12 months.