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Prefab ADU in Marin County

Abodu makes and installs prefab homes for play, passive income and possibility in as little as 6 months.

About Marin County

Marin County, California, stands out for its stunning natural beauty, characterized by rolling hills, coastal landscapes, and redwood forests. As the need for additional living space continues to grow, many homeowners in Marin County are turning towards prefabricated Accessory Dwelling Units (ADUs) as a viable option. A prefab ADU is a secondary housing unit built on the same lot as a primary residence and can serve as a space for multi-generational living, rental income, or simply a place for relaxation and creativity.

What are the benefits of having an ADU?

ADUs offer several advantages for homeowners. They can provide additional rental income, accommodate family members, increase property value, and contribute to the community by addressing housing shortages. Moreover, as prefab units are constructed off-site and delivered ready to be installed, they promise a faster, more efficient, and less disruptive building process compared to traditional construction methods.

Abodu Unit

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Marin County ADU requirements

When planning to build a prefab ADU in Marin County, you must adhere to specific requirements. ADU Marin, a collaboration between cities and towns and the county, is the best place to learn about ADU requirements.


How much does an ADU cost in Marin County?

Estimate the cost by using the ADU Marin calculator tool.

Building Permits

How do I get an ADU permit in Marin County?

Obtaining a permit can be navigated through ADU Marin. You'll need to submit documentation, including detailed plans, site maps, and information on how the ADU meets local zoning regulations. Then your application will be reviewed to ensure compliance with building codes and land-use policies.


What are the top ADU requirements in Marin County?

Requirements vary between the different types of ADUs and junior ADUs (JADUs). In general, secondary units must have access to basic utilities like water, sewage, and electricity according to California law. Additionally, each city within Marin County may have specific requirements for ADU utilities like fire sprinklers and water meters.


How do I finance an ADU in Marin County?

You can finance prefab ADU projects through various channels, including home equity loans, personal loans, or savings. Some prefab ADU companies also offer financing solutions, making the process easier for homeowners.

FAQs: Prefab ADUs in Marin County

Fee schedules for ADU permits in Marin County vary by city and unit size, but you can expect to pay a few thousand dollars. Find more information on your city's permitting page. Our Abodu Project Managers handle the permitting process for all prefab ADU builds.

California state law mandates a minimum distance of 4 feet between the ADU and a homeowner’s property line.

In Marin County, the maximum ADU size varies by jurisdiction and the type of construction (new or conversion of existing structure) or number of bedrooms, but it is typically between 800 square feet ADU and 1200 square feet. The ADU standards for each city are available on the ADU Marin website.

ADUs usually come equipped with several essential appliances, including, but not limited to:

  • Stove or cooktop

  • Refrigerator

  • Oven

  • Dishwasher

  • Washer and dryer

  • Water heater

  • HVAC system

Whether you’re in Corte Madera, Mill Valley, Larkspur, Ross, or Sausalito, Abodu is ready to help you navigate the process of adding a beautiful, functional ADU to your home.

Get your backyard assessment.

Upgrade your property with a custom prefab ADU by Abodu. We off full end-to-end service, including permitting, site work, construction, and delivery. Schedule a call or visit our showroom today.

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