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Quick Tips on Accessory Dwelling Units (ADUs)

Updated: Jan 23

Picture of inside of an ADU.
ADUs are small separate living spaces, that can be attached or detached from a single-family home.

ADUs are small separate living spaces, that can be attached or detached from a single-family home, and adds lower cost great private living space to a home.

There are many benefits to build an ADU on your property, including:

  • Adding to your property value with lower budget

  • More living space in an existing home, while offers privacy

  • Provides space to work from home

  • Keeps guests close and offers privacy for both parties

  • Provides great space to take care of aging parents, and still provide them privacy and independent lifestyle

  • Saves money on rent in an expensive market

  • Gives great cash flow by renting it out for short-term rentals

Here are some quick tips on Accessory Dwelling Units (ADUs) and State of California ADU regulations:

  • In a residential or mixed-use zone, California State Law allows you to build up to one ADU and one Jr. ADU if there are adequate water and sewage services.

  • An ADU may be attached or detached from the primary residence. A Jr. ADU must be attached.

  • An ADU must have its own living, sleeping, eating, cooking, and sanitation facilities, including a full kitchen and bathroom.

  • A Junior ADU (Jr. ADU) is no more than 500 square feet and must be contained entirely within a single-family residence. It must have a separate entrance and an efficiency kitchen but may share a bathroom with primary dwelling.

  • ADUs may be built up to 1200 square feet.

  • Attached ADUs can never be more than 50% of the primary dwelling size except to allow for a minimum size of 800 square feet.

  • ADUs may be up to 16 feet in height, although taller structures allowed if they meet residential setback requirements.

  • Under California State Law, deed restrictions and HOA rules that ban ADUs are void.

  • To get started, you must apply for ministerial planning approval and building permits.

  • At MOKA Construction, our dedicated engineering team can help you with custom designed ADU from designing to permitting to construction, hassle free.

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