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Prefab ADU in South San Francisco

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

About South San Francisco

An accessory dwelling unit (ADU), or guest house, is a separate dwelling on the same property as your house. There is enough living space in an ADU for at least one person to work, rest, and cook. One efficient and affordable way of adding an ADU on your property is to choose a prefab ADU, which comes pre-built.

Abodu offers a diverse range of customizable high-quality finishes and floor plans to suit any space available on your South San Francisco property. With rents climbing and the Bay Area housing crisis continuing to escalate, there’s never been a better time to invest in an ADU project to ease the housing crisis with affordable rent for a long-term tenant.

Abodu has a prefab ADU option for any property configuration without the drawn-out hassle of on-site construction.

What are the benefits of having an ADU?

There are three major benefits to having an ADU:

  1. More space: Bay Area residents know how precious space can be. Adding an ADU to your property creates new opportunities for a work-from-home suite, a living space, or a dedicated creative studio. Also, a modular home can increase your property value by up to 30%, depending on the square footage of your current home.

  2. Rental opportunities: You can earn extra income while providing a solution to the California housing crisis. In fact, adding more affordable housing is such a priority for California that they’ve reduced friction in building and permitting ADUs.

  3. Host without hassle: Stop worrying about sharing one bathroom with eight people by building an ADU. Guests can enjoy privacy in the comfort of your backyard with their own bathroom and kitchen. For older relatives, an ADU offers independence and peace of mind knowing that family is nearby.

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South San Francisco ADU requirements

Streamline your ADU construction by researching the South San Francisco permit procedures, utility regulations, and ways to finance your ADU project.

Building Permits

How do I get an ADU permit in South San Francisco?

First, you need to submit your application to build an ADU to the Building Division of South San Francisco. The review takes no more than 60 days. You’ll need to pay the Building Permit Fee once the permit is awarded. If you’re concerned about having all the correct applications, permits, and fees, consider working with an all-inclusive prefab ADU home builder to handle the project management for the permitting process.


What are the top ADU requirements in South San Francisco?

In South San Francisco, you do not need to pay utility connection fees or capacity charges for an ADU unit unless it is built with a new single-family home or if you requested separate connections for the ADU. You will be responsible for paying for the unit’s electricity, water, sewage, and gas.

For power and gas, contact PG&E to better understand how your ADU will affect your bill. Most ADUs are energy efficient, so there should not be a significant change. Sewage, recycling, and trash are handled by South San Francisco’s Department of Public Works, while water should go through the Westborough Water District.


How do I finance an ADU in South San Francisco?

South San Francisco has partnered with several agencies to help make building a prefab ADU more affordable. They include:

  • Housing Trust Silicon Valley

  • HEART of San Mateo County

  • The Second Unit Center

  • Bright in Your Own Backyard

You can also apply for a grant through the California Housing Finance Agency. They offer funding opportunities for homeowners up to $40,000 toward pre-development and non-recurring closing costs. Pre-development costs include:

  • ​​Site prep

  • Architectural designs

  • Permits

  • Soil tests

  • Impact fees

  • Property survey

  • Energy reports

FAQs: Prefab ADUs in South San Francisco

Yes, it is possible to build an ADU in South San Francisco. California has passed state laws that encourage applying for an ADU permit and constructing a unit to ease the current housing crisis. The City of South San Francisco has also partnered with various agencies to make building an ADU on your property more accessible and financially possible.

You apply for a permit to build an ADU through the City of South San Francisco’s Building Division. After the permit is approved, the Planning Division has up to 60 days to review your application.

The timeline for construction depends heavily on the floor plan chosen, the ADU design, material availability, the pace at which the city or county can process applications for permits, and cooperation from any other major agency required. Having a knowledgeable builder on site can improve the time to completion for any construction project, and an ADU is no different.

There are currently no minimum size requirements for an ADU in South San Francisco.

Learn more about Abodu Prefab ADUs

Abodu can have your new ADU ready in as little as nine months. We build and deliver prefab homes across the state of California, whether for earning extra rental income or creating additional living space. Contact our experts today to schedule a tour.

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All-in-One Service

Featuring an impressive selection of pre-approved plans, Abodu streamlines the process of building and installing premium built-to-order ADUs.

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Unparalleled Design

Each floor plan showcases timeless designs using sustainable, high-quality materials—all with upfront pricing.

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Committed to delivering a straightforward, hassle-free experience for California homeowners, our efficient approach to prefab ADUs lets you enjoy your newly added living space as soon as seven months after signing on the dotted line.

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A Great Investment

Take advantage of an exceptional return on investment with an Abodu ADU.

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Book a call or tour today.