We service Woodside, CA and surrounding areas including zip code 94027, 94028, 94061, and 94062.


ADU in Woodside, CA

Woodside, California, is a beautiful place for families to live and an even better place to own an accessory dwelling unit (ADU). The town is known for its large number of family-owned businesses, its strong community spirit, and its commitment to environmental stewardship. Woodside is also home to a variety of excellent schools, both public and private. As a result, families who move to Woodside can rest assured that their children will receive a top-notch education. 

Additionally, the town is located just a short drive from San Francisco, making it easy for families to take advantage of all the city has to offer. And, with its mild climate and beautiful scenery, Woodside is an ideal place to call home.


The Construction of an ADU

Getting a high quality ADU built is no simple task. The process of planning and building an ADU in Woodside, 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 Woodside, 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 Woodside, CA

Acton ADU, operates in Woodside, 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 Woodside, CA, property that would otherwise go unused by adding an ADU. Call Acton ADU right away to get started!

Questions about ADUs in Woodside? Inquire Below
  • Attached
  • Detached
  • Interior

Get All the ADU Zoning & Regulation Details

CITY OR COUNTYWoodside, California
DATE UPDATED11/30/2020
Detached: SCP/RR/SR/R-1/MFRD
Barn conversion
Junior ADU
STORIESMust adhere to underlying zoning district regulations.
LOT SIZEAttached: must meet zoning requirements.
Detached: must meet zoning requirements, except in R-1 districts where min. lot area is 20,000 sq.ft. Two ADUs max per parcel allowed.
For lots smaller than 1 acre, one attached or detached ADU is allowed, and one junior.
For lots larger than 1 acre but smaller than 1.5 acres, one attached and one detached ADU are allowed.
For lots larger than 1.5 acres, two ADUs (attached or detached) are allowed.
MAXIMUM ADU FLOOR AREAAttached: not exceed 50% of main residence, or 1,500 sq.ft., whichever is less.
Detached: 1,500 sq.ft. max.
Within a barn: no greater than 50% of barn footprint or 1,200 sq.ft, whichever is less.
Junior ADU: no more than 500 sq.ft.
Note: If an ADU only has the minimum 4’ side and rear setbacks, then it will be limited to 800 sq.ft.
OWNER OCCUPANCYRequired for Junior ADUs.
LOT COVERAGEThe requirements of § 153.049 related to accessory buildings shall apply.
STORAGENo min/max
KITCHENADUs require separate kitchen facilities (permanent range, counters, refrigerator, sink).
Efficiency ADUs may have an efficiency kitchen which includes a cooking facility with appliances, and a food preparation counter and storage cabinets of a reasonable size in relation to the size of the Junior ADU.
BATHADUs require separate bathroom facilities.
Junior ADUs may contain separate or may share sanitation facilities with existing dwelling.
Note: Drainage and sewer connections should be assessed on a project by project basis.
SETBACKSAttached, Detached: 4’ side and rear. Front are subject to requirements of the underlying district.
When there are two ADUs on site, only one unit may have a side or rear of 4’.
Garage conversion: 4’
Note: Fire Department regulations should be assessed on a project by project basis.
PARKINGOne parking space per ADU. Off-street parking to be permitted in setback areas in locations determined by the Town, or through tandem parking, unless specific findings are made that parking in setback areas or tandem parking not feasible based upon specific site, regional, topographic, or fire and life safety conditions. State parking exceptions apply (public transit, historic district, no permits for ADU occupants, car share, attached/conversion/junior)
HEIGHT17′ maximum
LOCATIONMust be subordinate to main dwelling and approved by Planning Director.
SPRINKLERSAutomatic sprinklers required for barn ADUs and the barn itself.
REAR YARD COVERAGEThe requirements of § 153.049 related to accessory buildings shall apply.
DESIGNThe Planning Director to be required to find that ADUs compatible with neighboring property and uses in height, bulk, location, appearance, color, materials, and landscaping. Barn ADUs must be separated from other portions of the barn with a one-hour firewall, in accordance with the Town’s Building Code.
Note: Historic Neighborhoods or Districts should be assessed on a project by project basis.
ENTRYWAYSAn efficiency accessory dwelling unit shall include a separate entrance from the main entrance to the structure, with an interior entry to the main living area. For garage conversion ADUs, a new access stair built a minimum of 5’ from rear and side property lines, or existing setback (whichever is greater) for the ADU built above the garage is allowed.
RESOURCES>> Union City, CA City Website
>> Union City, CA City Housing Element Updates
>> Union City, 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 Woodside, 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.