What's an adu?

 ADU, or Adjacent Dwelling Unit, are self-contained, smaller living dwellings on the same lot of a single-family house. It's either attached to the main house or detached as separate stand alone home. Typically they are independent cottage, granny-unit or guest house. A great way to add value to your home, create income, and/or house a family member.



  • We call your city planning department to confirm your property's ADU requirements.
  • Written analysis of the feasibility for an ADU on your property.
  • Confirmation of allowable ADU designs including garage conversion, modular and two stories.
  • Objective estimates for permit fees, construction costs and property taxes.
  • Summary of potential risks and uncertainties for your project.
  • Records and notes from each contact to city offices for your reference.
  • Suggestions for design concepts, next steps and expected timelines for the project.
  • Delivered within 3-5 business days from your date of order.
  • Scheduled follow up call with our team to answer any questions you have.

Contact us now to design a floor plan that will fit your needs!

Green Galaxy Builders

2398 WALSH AVE, 95051-1301, Santa Clara, CA 95051, US

(800) 564-3148