We service Monte Sereno, CA and surrounding areas including zip codes 90503.


Learn About Monte Sereno, CA Unique ADU Guidelines

Embarking on an ADU project in Monte Sereno? Let Acton ADU be your compass through the distinctive regulations of this charming city. We provide a clear, detailed guide to navigate Monte Sereno’s specific ADU rules, from zoning nuances to permit processes. Our aim is to simplify these complexities, ensuring your ADU project in Monte Sereno aligns seamlessly with local standards.

Crafting a Distinctive ADU in Monte Sereno

In Monte Sereno, creating an ADU is more than just construction; it’s about crafting a space that reflects the city’s unique charm. Acton ADU excels in designing ADUs that meet Monte Sereno’s strict codes while catering to your personal aesthetics. We focus on blending traditional and contemporary elements, ensuring your ADU is not only compliant but also a testament to your taste and the city’s distinct character.

Tailoring ADU Designs to Monte Sereno’s Elegance

Monte Sereno is known for its elegance and tranquility, qualities your ADU should embody. Acton ADU specializes in customized ADU solutions that resonate with the serene beauty of Monte Sereno. We offer a range of design options, from quaint cottages to modern retreats, ensuring your ADU is a perfect fit for both your lifestyle and the city’s sophisticated ambiance.

Expert ADU Construction in Monte Sereno

Constructing an ADU in Monte Sereno demands a builder who appreciates finesse and quality. Acton ADU is synonymous with these values. Our expertise in Monte Sereno’s building standards is complemented by our commitment to exceptional craftsmanship. This section will highlight our approach to creating ADUs that are not only structurally superior but also enhance the aesthetic appeal of Monte Sereno properties.

Start Your Monte Sereno ADU Journey with Acton ADU

Ready to add a unique ADU to your Monte Sereno home? Acton ADU is your partner in this exciting venture. We’re here to assist you every step of the way, from design selection to the final build. Reach out to us to embark on your ADU project in Monte Sereno, and watch as we transform your vision into a beautiful reality.

ADU Tips for Monte Sereno, CA

The personalization and design options for your new backyard accessory dwelling unit (ADU), often known as a “casita,” are flexible. Our special stream here at Acton ADU for Monte Sereno, California, specializes in assisting families in designing and constructing their perfect ADUs. To make your new ADU truly special for you, we provide a wide range of customization possibilities.

Make the Exterior Your Own

The community in Monte Sereno, California, is active and hospitable, and your new ADU should showcase your particular taste as well as that of the town itself. The outside of your ADU may be customized in a variety of ways, from selecting the right color palette to including ornamental accents. Here are a few suggestions to get you going:

  • Pick fashionable siding that goes with your main house.
  • For a bit of individuality, add window boxes or planters packed with vibrant flowers.
  • Include a little patio or seating area so you may enjoy the outdoors if you have the space.
  • Install string lights, lanterns, or solar lights to create a cozy, welcoming atmosphere at night.

Personalize the Interior

Your new ADU’s interior is where you’ll have the most creative freedom. You have the opportunity to design a room that is both practical and reflects your individual taste and personality. Don’t forget to give any of the following a try:

  • Choose a color for the walls that expresses your individuality.
  • Include organic materials such as plants, wood, or stone.
  • Display artwork or pictures that express your particular taste.
  • Choose home furnishings and decorations that showcase your style.
  • Fill the ADU with all the things you and your loved ones adore!

The Construction of an ADU

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

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

Questions about ADUs in Monte Sereno? Inquire Below
  • Attached
  • Detached
  • Junior

Get All the ADU Zoning & Regulation Details

CITY OR COUNTYMonte Sereno, California
DATE UPDATED11/15/2020
ZONINGAccessory dwelling units shall be permitted on all residential lots
R-1-8 / R-1-20 / R-1-44 / RM-Multi-Family Residential District / P / PD
TYPES OF ADUSAttached, Detached, Garage Conversion Junior ADUs
850 sq. ft. or 1,000 square feet for an accessory dwelling unit that provides more than one bedroom, with or without parking.

850 sq. ft. or 1,000 square feet for an accessory dwelling unit that provides more than one bedroom, with or without parking.

1,200 square feet for an accessory dwelling unit that provides more than one bedroom, with or without parking.

RM-Multi-Family Residential District:
850 sq. ft. or 1,000 square feet for an accessory dwelling unit that provides more than one bedroom, with or without parking.

850 sq. ft. or 1,000 square feet for an accessory dwelling unit that provides more than one bedroom, with or without parking.

850 sq. ft. or 1,000 square feet for an accessory dwelling unit that provides more than one bedroom, with or without parking.

*Attached ADUs shall not exceed 50% of existing living area, though 800 sq.ft. is always permitted
LOT COVERAGEMust follow requirements established by the zoning district in which the lot is located.
STORAGENo min/max
KITCHENAll ADUs require separate kitchen facilities (permanent range, counters, refrigerator, and sink).
BATHAll ADUs require separate bathroom facilities.
Note: Drainage and sewer connections should be assessed on a project by project basis.
PARKINGAt least 1 parking space shall be provided for each ADU in addition to the minimum number of parking spaces required for the primary dwelling. No additional driveways shall be permitted, except for corner lots. Parking may be provided in setback areas or in a tandem configuration on an existing driveway, unless the Director determines that parking in setback areas or tandem parking is not feasible based upon specific site or regional topographical or fire and life safety conditions.

State parking exceptions apply (public transit, historic district, no permits for ADU occupants, car share, attached/conversion/junior), as well as when a garage, carport, or covered parking structure is demolished to build ADU.
SETBACKSSide and Rear: 4′
Front: In compliance with underlying district
HEIGHTDetached: 16’.
Attached/Junior: Comply with primary structure, which shall comply with any height restrictions for the zoning district.
REAR YARD COVERAGEMust follow requirements established by the zoning district in which the lot is located.
DESIGNAccessory dwelling units shall be constructed with the materials identical in color, texture, and appearance to the primary dwelling, including but not limited to, roofing, siding, windows, and doors; and, the dwelling unit shall match the roof pitch and roof form of the primary dwelling so as to blend with the existing residential design.
Note: Historic Neighborhoods or Districts should be assessed on a project by project basis.
RESOURCES>> Monte Sereno, CA City Website
>> Monte Sereno, CA City Housing Element Updates
>> Monte Sereno, CA Post Offices
SOURCE CODEhttps://library.municode.com/ca/monte_sereno/codes/code_of_ordinances?nodeId=MUCO_TIT10PLZO_CH10.06GEPR_10.06.140ACDWUNJUACDWUNSTRE
Important 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 Monte Sereno, 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.