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County of Marin

ADU support for homeowners 

The County of Marin is excited to launch their new Accessory Dwelling Unit Technical Assistance Program to support homeowners who are ready to take the next steps in building an Accessory Dwelling Unit (ADU) or a Junior Accessory Dwelling Unit (JADU), but could benefit from support and expertise in doing so.

The County has hired nonprofit Hello Housing to provide free feasibility and project management support through it's HelloADU program to eligible homeowners who want to add an ADU/JADU to their property. Our team of design and construction experts are ready to help you figure out what is possible on your property, help you identify and vet good professionals to work with and will help support you in the management of your ADU team throughout the design and permitting process.

Here are the basics:

  • Your home must be located in the Unincorporated Areas of the County.

  • You must own and live in your home.

  • You must have access to financial resources to design and build your unit.

  • You must enter into a written lease with your tenant(s), who can be friends, family members, or someone new to you.

  • For participants who earn greater than 120% of the Area Median Income, the rent for your newly constructed unit is subject to reasonable rent caps for a 3-year period. 

Interested?

To learn more about program eligibility and to get answers to common questions please read through our Frequently Asked Questions

HelloADU program services are an innovative collaboration between nonprofit Hello Housing, philanthropy, major employers, local government, and homeowners like you. 

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