FAQ
  • ADU Information
  • ADU Regulations in California
  • Building an ADU
  • ADU Grants
  • ADU Permits
  • ADU Loan Options
  • Design and Customization
LiveLarge ADUs are available in Northern California. We serve customers from:

Campbell, Cupertino, Gilroy, Los Altos, Los Altos Hills, Los Gatos, Milpitas, Monte Sereno, Morgan Hill, Mountain View, Palo Alto, San Jose, Santa Clara, Saratoga, Sunnyvale

Atherton, Belmont, Brisbane, Burlingame, Colma, Daly City, East Palo Alto, Foster City, Half Moon Bay, Hillsborough, Menlo Park, Millbrae, Pacifica, Portola Valley, Redwood City, San Bruno, San Carlos, San Mateo, South San Francisco, Woodside

Alameda, Albany, Berkeley, Dublin, Emeryville, Fremont, Hayward, Livermore, Newark, Oakland, Piedmont, Pleasanton, San Leandro, Union City

ADU Information
What is ADU?
An ADU, or Accessory Dwelling Unit, functions as an auxiliary living space alongside the primary residence. These units can be integrated into the main house, repurposed from existing areas, or constructed as separate structures. In California, ADUs are mandated to encompass living, sleeping, cooking, and bathroom facilities, essentially constituting a complete and habitable dwelling.
Why are ADUs becoming more popular?
ADUs, also known as accessory dwelling units, are gaining popularity among homeowners for several reasons. They offer opportunities to boost property value, expand living space, facilitate closer proximity to family and friends, and generate additional income through rental options. Furthermore, their relatively small size and comparatively lower cost make them an attractive alternative to buying traditional single-family homes, particularly in states like California. In California, the state government has incentivized ADU construction as a means to increase population density while preserving neighborhood character, addressing concerns often associated with multifamily property development.
Is an ADU a Good Investment?
Investing in an ADU can be a sound financial decision for many reasons. Firstly, it can increase the overall value of your property, providing a potential return on investment. Additionally, ADUs offer flexible rental opportunities, allowing homeowners to generate supplementary income through long-term leases or short-term rentals like Airbnb. Moreover, as housing markets become increasingly competitive, ADUs can provide affordable housing solutions for renters while also diversifying your investment portfolio. However, like any investment, thorough research and consideration of local regulations and market conditions are crucial to determining if an ADU is the right investment for your specific situation.
How does adding an ADU increase property value?
An ADU can raise property value by generating extra rental income, providing more living space, and making the property more versatile and adaptable to different needs.
ADU Regulations in California Have Questions About Your ADU?
ADU Regulations in California
What are the regulations around ADUs in California?
In California, regulations regarding ADUs under 800 square feet must adhere to a standardized set of rules across local jurisdictions. These regulations prohibit additional restrictions on aspects such as structure design, height, lot ratios, and setbacks. ADUs can be positioned as close as 4 feet from property lines and reach a maximum height of 16 feet. While ADUs can extend up to 1,200 square feet, beyond the 800 square foot threshold, local jurisdictions regain some authority to implement specific regulations.
Can an ADU be the main home or the only building on the property?
ADUs are primarily designed as supplementary living spaces to the main home structure. However, it's possible for someone to use an ADU as their main residence. In such cases, they would need to obtain the appropriate permits for the ADU to function as the main home, which entails a separate process from obtaining an ADU permit.
Building an ADU
Do I need permits to build an ADU?
Yes, in most cases, you will need permits from the local building department to construct an ADU. Permit requirements vary depending on local regulations, but they typically involve zoning approval, building permits, and possibly additional approvals such as historic preservation review or environmental permits.
What are the different types of ADUs?
ADUs come in various forms, including detached cottages, converted garages, basement apartments, attached additions, junior ADUs (JADUs), above-garage units, and tiny houses. The type of ADU suitable for a property depends on factors such as space availability, local regulations, and homeowner preferences.
Are there financing options available for building an ADU?
Yes, financing options for ADUs include home equity loans, construction loans, personal loans, government programs, and cash-out refinancing. Homeowners should explore different financing options and consult with financial advisors or lenders to determine the best option based on their financial situation and goals.
ADU Grants
Are there grants available in California specifically for building ADUs?
While there may not be grants exclusively for ADU construction, various programs and resources in California offer financial assistance and incentives to homeowners interested in building ADUs.
What types of financial assistance are available for ADU construction in California?
Homeowners in California can explore options such as ADU financing programs, low-interest loans, lines of credit, and grant programs offered by local governments, nonprofit organizations, and state agencies.
How can I find out about ADU grant programs in my area?
Homeowners can contact their local government housing departments, community development agencies, or nonprofit organizations to inquire about available grant programs and incentives for ADU construction.
What other funding options are available besides grants?
In addition to grants, homeowners can explore financing options such as loans, lines of credit, and incentives related to energy efficiency and renewable energy installations.
Are there state-level programs in California that support ADU construction?
Yes, programs like the Affordable Housing and Sustainable Communities (AHSC) program, managed by the California Strategic Growth Council, provide funding for affordable housing projects, including ADUs, that promote sustainable development.
What steps should I take to explore ADU grant opportunities in California?
Homeowners interested in ADU grants should research available programs, review eligibility criteria, and reach out to relevant organizations or government agencies to inquire about application procedures and deadlines.
ADU Permits
What is the first step in obtaining permits for building an ADU?
Begin by researching the zoning and building codes specific to your property and jurisdiction. Contact your local city or county planning department to understand the regulations and requirements for ADU construction in your area.
How do I determine if my property is eligible for ADU construction?
Check factors such as lot size, zoning designation, setbacks, and other local requirements. Some areas have restrictions on ADU size, location, and occupancy. Verify eligibility with your local planning department.
What documents are required for the permit application?
The permit application typically includes ADU plans, site plans, property surveys, and any other required documents. Work with an architect, designer, or contractor to prepare detailed drawings and specifications that comply with building codes and regulations.
How long does the permit review process take?
The permit review process can vary depending on the workload of the building department and the complexity of the project. It may take several weeks or months for your ADU plans to be reviewed and approved.
What happens after the permit is issued?
Once your ADU plans are approved, you will receive the necessary permits to begin construction. Follow the approved plans and schedule inspections at various stages of construction to ensure compliance with building codes and regulations.
How do I schedule inspections during construction?
Contact your local building department to schedule inspections at various stages of construction, such as foundation, framing, plumbing, electrical, and final inspection. Inspections are necessary to verify compliance with building codes and regulations.
What is the final step in the permit process?
The final step is to schedule a final inspection with the building department to verify that the ADU meets all applicable building codes and regulations. Upon passing the inspection, the ADU will receive final approval, and the permit process will be complete.
Can I occupy and use the ADU after obtaining permits?
Once all permits and inspections are obtained, you can legally occupy and use the ADU as intended, whether for rental income, family housing, or other purposes. Make sure to adhere to all local regulations and requirements.
ADU Loan Options
What loan options are available for building an ADU?
Several loan options can finance ADU construction, including home equity loans, construction loans, personal loans, cash-out refinancing, and government programs.
How does a home equity loan or HELOC work for ADU financing?
Homeowners with significant equity in their homes can borrow against it with a home equity loan or line of credit. These loans typically offer lower interest rates and provide a lump sum (home equity loan) or a revolving line of credit (HELOC) for ADU construction.
What is a construction loan, and how does it apply to ADUs?
A construction loan is designed to finance the construction of new homes or renovation projects, including ADUs. These loans often have variable interest rates and require a detailed construction plan. After construction, the loan may be converted into a traditional mortgage.
Can I use a cash-out refinance to fund ADU construction?
Yes, homeowners with equity in their homes can refinance their existing mortgage and take out a larger loan amount, receiving the difference in cash. Cash-out refinancing can provide funds for ADU construction while potentially securing a lower interest rate on the mortgage.
Are there government programs or incentives for ADU financing?
Some local governments offer financing programs or incentives for ADUs, such as low-interest loans, grants, or tax credits. These programs aim to promote affordable housing and encourage ADU construction.
What is an FHA 203(k) loan, and how does it apply to ADU construction?
An FHA 203(k) loan allows homebuyers to finance both the purchase of a property and the cost of renovations, including ADU construction, into a single mortgage. This option is beneficial for properties that need significant repairs or improvements.
How do I choose the right loan option for ADU construction?
Consider factors such as interest rates, repayment terms, closing costs, eligibility requirements, and your financial situation. Compare multiple lenders and loan products to find the best fit for your ADU construction plans.
Should I consult with a financial advisor or mortgage broker before selecting a loan?
Yes, consulting with a financial advisor or mortgage broker can provide personalized guidance and help you navigate the loan selection process. They can offer insights into your financial situation and recommend suitable loan options for ADU construction.
Design and Customization:Have Questions About Your ADU?
Design and Customization:
What kind of designs are available for prefab ADUs?
Prefab ADU builders offer a variety of designs, from studios to multi-bedroom units. Customization options may be available depending on the builder.
Can I use my own plans for a prefab ADU?
Some builders may allow customization or working with your own plans, but it’s not a common option.
LiveLarge ADUs are available in Northern California. We serve customers from:

Campbell, Cupertino, Gilroy, Los Altos, Los Altos Hills, Los Gatos, Milpitas, Monte Sereno, Morgan Hill, Mountain View, Palo Alto, San Jose, Santa Clara, Saratoga, Sunnyvale

Atherton, Belmont, Brisbane, Burlingame, Colma, Daly City, East Palo Alto, Foster City, Half Moon Bay, Hillsborough, Menlo Park, Millbrae, Pacifica, Portola Valley, Redwood City, San Bruno, San Carlos, San Mateo, South San Francisco, Woodside

Alameda, Albany, Berkeley, Dublin, Emeryville, Fremont, Hayward, Livermore, Newark, Oakland, Piedmont, Pleasanton, San Leandro, Union City

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