Schedule ADU Consultation
(707) 346-5335 ext: 496
Schedule ADU Consultation (707) 346-5335 ext: 496

Cotati ADUs

Everything about building Accessory Dwelling Units in Cotati, CA

Research local zoning codes for ADU design
Calculate returns and costs to get financing
Estimate your project costs and timeline

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Cotati ADU Guidelines Last Updated 10/13/20

The city government of Cotati will approve ADUs under California's statewide mandated regulations.
The California Building Code (CBC) 2019 is adopted.



hintsights

City Hint: The city has not yet responded to requests for ADU permit volumes for the past year, but they will be provided here once a response has been received.


Number of ADUs allowed:

According to state law, all single-family homes are allowed at least one Accessory Dwelling Unit. Additionally, single-family lots which are owner-occupied may create one Accessory Dwelling Unit and one JADU. Also, multi-family lots may now add one ADU per every four existing residential units, so long as they were legally established.

Types of ADUs allowed:

Detached ADU, Attached ADU, Junior ADU are approved. Accessory Dwelling Units may be new construction or converted from existing space. Junior Accessory Dwelling Units must be converted from existing space.

Lot size:

Residential properties will not be subject to any minimum lot size for Accessory Dwelling Unit (ADU)s by ordinance or of the underlying zoning district. ~ According To AB68

ADU size:

Residential properties will be approved to create up to 850 square ft. for a one bed ADU or up to 1,000 square ft. for a two bed ADU, regardless of the underlying zoning standards of the property. A JADU is approved up to 500 square ft.. According to Califronia Residential Code, the minimum size of any living unit is 150 square ft. (including Accessory Dwelling Unit (ADU)s and JADUs). ~ According To AB68

Setbacks:

The maximum required setback for a detached new construction Accessory Dwelling Unit (ADU) shall be no more than 4 ft. from the rear and side property lines. Setbacks will not be required for Accessory Dwelling Unit (ADU)s and Junior Accessort Dwelling Unit (JADU)s converted from existing space that was legally eastablished. Attached Accessory Dwelling Unit (ADU)s and conversions from existing space to be expanded will be required to comply with the setbacks of the underlying zone. ~ AB-68

Parking:

Replacement parking shall not apply to parcels which convert an existing garage to an Accessory Dwelling Unit (ADU) or Junior Accessort Dwelling Unit (JADU). ~ AB68

Fire Safety:

Accessory dwelling units shall not be required to provide fire sprinklers unless they are also required for the primary dwelling. ~ State Standards

Shape, materials and style:

Specific design styles and restrictions are not specified under State Standards. Passageways shall not be required in conjunction with the construction of an accessory dwelling unit. ~ State Standards

Height:

The maximum height of an ADU is not specified in the state standards. If ADU maximum height is not established locally, the height limitations of the underlying zone shall apply. ~ State Standards

Design review:

The municipality shall provide a ministerial review process which is not based on a discretionary approval for an ADU. The process shall take no less than 120 days. Valid applications submitted for ADUs, if not approved or denied within 120 days from submission, shall be considered approved. ~ State Standards

Number of Bedrooms:

No maximum number of bedrooms is established other than that implied by the maximum size of an ADU allowed. ~ State Standards

Ownership:

Owner-occupancy will not be required for new Accessory Dwelling Unit (ADU)s (conversion and new construction) built between 2020 and 2025. ~ SB13 Update

Utility connections:

Connection and utility fees shall be reasonable, and shall not be disproportionately higher than those to develop primary dwellings, so as not to deter the development of ADUs. If a private sewage disposal system is used, such as a septic system, review and approval by a local health officer may be required. ~ State Standards

Allowed Zones:

*** Beginning in 2020, according to state law, all residential zoning districts, including single-family and multi-family, are allowed to build Accessory Dwelling Units. ***

Residential Building Code:

The California Building Code (CBC) 2019 is adopted.

Call/Text ADU Operator (707) 346-5335
Dial Ext: 496
Detached ADU in Livermore, CA $11,875 saved


ADU Design Library

Browse hundreds of models to find the right fit for your property.

ADU Model 450 sqft

W 30 ft L 15 ft

ADU Model 600 sqft

W 40 ft L 15 ft

ADU Model 665 sqft

W 38 ft L 18 ft


Customer Reviews


"Housable has been a great resource regarding my ADU project. I purchased both the Property and Design Reports. In both cases, they delivered as promised and on time."

Ed in Corona, CA

"My experience with Housable was exceptional. The team was extremely helpful and responsive. I am very satisfied and happy to have used these services. As a home owner I do not know the construction lingo or process but the Housable team very kind and helpful and patient with me. My expectations were exceeded. Thank you for everything."

Monica H. in Oakland, CA

"The property report was great! Made me feel like my project is feasible."

Alexandria in Santa Ana, CA



Complete 5-Step Process

Design
Browse hundreds of permit-ready ADU designs and order one to customize to your needs.
Marketplace
Connect with local contractors to get site visits and cost estimates for your project.
Customization
Mark up changes to your plans and provide critical info needed to permit your project.
Permits
Finalize your project blueprints to submit for building permits.
Construction
Select your contractor and build your project.


What our customers say:



Customer Reviews


"My permits were APPROVED, thank you for all your hard work. I am in the process of meeting with contractors. "

Mary S. in San Jose, CA

"I just wanted to let you know that the permit process has been completed and we are currently in the construction phase. The work you guys did was great and I will definitely be using this service again in the future. I will keep you guys updated on anything important. Thanks!"

Patrick L. in Orange County, CA

Detached ADU in Livermore, CA

1,003 sq. ft., 3 bed, 2 bath - Built in 2020

Completed Project

Total Project Cost:
$225,000
Architectural Design Fees
Market Rate
Architecture Fees:
$18,000
Percentage of Project Cost:
8.00%
Housable Fees
Design + Permitting
ADU Permit Set:
$6,125
Percentage of Project Cost:
2.72%

Net Savings With Housable:
$11,875

Estimate Your ADU Potential
Financing
Costs / ROI

SELECT ADU SIZE & TYPE

APPRECIATION ESTIMATE

* upon completion of ADU

CONSTRUCTION COST ESTIMATE

* based on local average price per sqft

RENTAL ESTIMATE

* estimated by location

MORTGAGE ESTIMATE

* 30 years / 5% interest rate / 20% down payment

SELECT ADU SIZE & TYPE

Size: 500 sqft

BASED ON LOCAL AVERAGE PROPERTY DATA & VALUE

Appreciation Estimate = (Base Value: $) / (Home's Living Space: sqft) * (ADU's Living Space: sqft)

Rental Estimate = (Rent Per Sqft: $2.91) * (ADU's Living Space: sqft)

Check your property's zoning, browse designs & get contractor estimates for your ADU project:

Everything you need to get accurate estimates from contractors for your ADU project. Get help with ADU feasibility, design, permitting and sourcing contractors for your project in one place.

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