We service Sunnyvale, CA and surrounding areas including zip codes 94043, 94085, 94086, 94087, and 94089.


Sunnyvale ADU Requirements

If you’re considering building an Accessory Dwelling Unit (ADU) in Sunnyvale, it’s crucial to familiarize yourself with the specific regulations governing ADU construction. Sunnyvale has established clear guidelines to ensure that ADUs are built in compliance with local laws while providing homeowners with the flexibility to create additional housing units on their property.

What are Sunnyvale, CA ADU Regulations?

Sunnyvale ADU regulations encompass various aspects, including size, setback, parking, and design standards. These rules are designed to maintain the character of residential neighborhoods while increasing housing options. For instance, Sunnyvale ADU requirements typically specify the maximum square footage allowed for an ADU, the minimum setbacks from property lines, and whether additional parking spaces are necessary.

To meet Sunnyvale’s ADU rules, you’ll need to carefully plan your project and obtain the necessary permits. Additionally, it’s essential to stay up-to-date with any changes in local regulations to ensure that your ADU construction remains compliant.

Your Guide to Sunnyvale ADU Rules

Navigating Sunnyvale ADU rules may seem like a complex journey, but at Acton ADU, we simplify the process for you. We understand that each ADU project is unique, and our expertise in Sunnyvale ADU requirements allows us to provide tailored solutions that align with your specific goals. Whether you’re exploring ADUs for multigenerational living, rental income, or enhancing your property’s overall value, Acton ADU is your trusted partner. We’ll guide you through every step of the process, from initial concepts and permits to construction, ensuring your project not only complies with local regulations but also enriches your property and lifestyle. Discover the endless possibilities of ADU construction in Sunnyvale with Acton ADU as your dedicated partner.

Why Choose Acton ADU?

With our extensive experience navigating the intricacies of Sunnyvale’s ADU requirements, our team can help you design and build an ADU that not only adheres to all regulations but also maximizes the potential of your property. Whether you’re interested in an attached ADU, detached ADU, or garage conversion, we’ll work with you to create a functional and beautiful living space that complies with Sunnyvale’s ADU rules. Contact us today to learn more about how we can assist you in bringing your ADU project to life in Sunnyvale.


The Construction of an ADU

Getting a high quality ADU built is no simple task. The process of planning and building an ADU in Sunnyvale , CA, has its challenges, but also has tremendous rewards. We endeavor to make it as simple for you as possible. . Here is a brief description of how it works:

  • The first step in establishing whether your project meets the requirements for an ADU is to validate it. To ensure your property conforms to all rules, we’ll inspect it. Answer the question of what can actually be built on your property legally.
  • We’ll work with you to personalize your ADU.. There are numerous pre-designed layouts available that can be used right out of the box or tweaked to your needs. There are also many interior packages to choose from, with a variety of design options.
  • Once designed, we’ll acquire your ADU permit and then start building your ADU. Our experienced craftsmen will begin ADU construction to the exact specifications.

The Acton ADU procedure is intended to be straightforward. To ensure that your ADU in Sunnyvale, CA, is exactly what you’ve envisioned, we’ll work directly with you at every stage. To start working on your project right now, get in touch with us!


Your ADU Contractors in Sunnyvale, CA

Acton ADU, operates in Sunnyvale, CA, as well as many other cities in the Bay Area. We have a group of knowledgeable experts who can work with you to design and construct the best ADU for your requirements. We also understand the applicable code requirements and can secure the required permissions for your project.

Adding an ADU can increase your home’s living space, potential income, and value. An ADU may be used for any purpose you can think of, such as a guest house or a home office. You might utilize additional space on your Sunnyvale, CA, property that would otherwise go unused by adding an ADU. Call Acton ADU right away to get started!

Questions about ADUs in Sunnyvale? Inquire Below
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Get All the ADU Zoning & Regulation Details

CITY OR COUNTYSunnyvale, California
DATE UPDATED11/24/2020
ZONINGNew or Expanded ADUs: R-0/R-1/R-2/Residential DSP blocks
Conversion ADUs: R-0/R-1/R-1.5/R-1-7/PD/R-2/Residential DSP blocks
TYPES OF ADUSStandard ADUs (SADU), which are attached/ detached/ conversion, and Junior ADUs (JADU)
Streamlined and non-streamlined processing are also important in Sunnyvale
Second-story only allowed above primary dwelling unit
MAXIMUM ADU FLOOR AREAMin. 150 sq.ft., Max 850 sq.ft. one bedroom, 1000 sq.ft. two or more bedrooms
JADU: 500 sq. ft.
LOT COVERAGEFor ADUs greater than 800 sq.ft., lot coverage zoning requirements found in Title 19 must be satisfied.
BEDROOMNo min/max
STORAGENo min/max
KITCHENRequire separate kitchen facilities (permanent range, counters, refrigerator, sink). JADU can have “independent” kitchen.
BATHRequire separate bathroom.

Note: Drainage and sewer connections should be assessed on a project by project basis.
PARKINGIn addition to required spaces for primary dwelling, one off-street parking space must be provided for each ADU, can be in tandem on existing driveway.
PARKING EXCEPTIONSNo parking space is required if unit:
1. Is located within one-half mile of major transit stop.
2. Is located within a designated historic district.
3. Is part of existing main dwelling or existing residential accessory structure intended for human habitation.
4. When on-street parking permits required but not offered to the occupant of ADU.
5. Has car share vehicle located within one block of ADU.
SETBACKSSide and Rear 4’

Note: Fire Department regulations should be assessed on a project by project basis.
FIRE SPRINKLERSDetached: not required
Attached: required if required for primary, or if new attached unit is >50% of existing living space
HEIGHT16’ for Detached
Attached as per municipal review
LOCATIONCannot be placed in front of main dwelling.
TRAFFIC IMPACT FEE (TIF)TIF is required for ADU 750 sq.ft. or greater, and calculated proportional to size of primary residence
DESIGNExterior materials, colors and appearance to match primary structures on same lot. 1-Hour Fire Rated Construction Wall is required between an attached SADU (conversion and addition) and the primary residence. Detached SADUs located 5’ from any property line shall be fire rated construction. If an interior door is proposed between the main building and the attached SADU, such door shall be 45-minute fire rated, self-closing and self-latching.

Note: Historic Neighborhoods or Districts should be assessed on a project by project basis.
ENTRYWAYSEntrances and outside stairways serving ADU shall not be constructed on any building elevation facing public street.
RESOURCES>> Sunnyvale, CA City Website
>> Sunnyvale, CA City Housing Element Updates
>> Sunnyvale, CA Post Offices
SOURCE CODEImportant Note: Rules and regulations are updated and changed frequently. It’s one of our jobs to be up to speed and navigate those regulations. Let us know if our website isn’t up to date or if you have any information that could help. Cheers!


Considering an ADU in Sunnyvale, CA? It’s a great way to enhance living space and boost property value. With Acton ADU, you’re partnering with experts who bring your vision to life. From design to construction, we’re with you every step of the way. Reach out today to explore the possibilities.