Closure Any Property For Addition In Contra Costa
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Detached ADUs may be built up to two stories not exceeding 20 feet in height. Conversion of an existing accessory structure or a portion of the existing primary residence to an ADU is not subject to height requirements.
A Junior ADU has a maximum size of 500 square feet and is located within the footprint of a single-family residence. These may be converted from the existing square footage of a single-family residence and/or an attached garage. Junior ADUs are only allowed in single-family residential districts.
Code Enforcement - Conservation & Development Storage sheds, tool sheds and play houses that have a foot print of less than 120 square feet do not require a building permit however do have other restrictions. .
Now, homeowners can build an ADU with a minimum size of 800 square feet and a maximum height of 16 feet, adhering to a 4-foot setback from side and rear yards. These changes significantly ease the process of ADU construction, allowing for more flexibility in design and placement on the property.
Homeowner's Exemption If you own and occupy the property as your principal place of residence, you are eligible for a Homeowners' Exemption of $7,000 in assessed value for that property. The exemption will reduce the annual property tax bill by at least $70 each year.
For those considering a detached ADU, such as a backyard cottage or a container home, California state law permits up to 1,200 sqft ADUs on most residential properties, subject to 4′ side and rear setbacks.
These include, but are not limited to, new structures, demolitions, additions, alterations, interior/exterior remodels, running new electrical, water or gas lines, repairs, outdoor kitchens, pergolas, pavilions, decks, carports, garages, docks, pools, foundation repairs, ADUs, and Junior ADUs, solar, energy storage ...
ADUs in Contra Costa can be no larger than 1,200 square feet and 16 feet tall. An ADU must have its own kitchen and bathroom and function as a complete, independent dwelling separate to the main residence on the lot.
8. Do I need a permit for a storage shed or small building? One-story detached accessory buildings used as tool and storage sheds, playhouses, and similar uses, provided the floor area does not exceed 120 square feet, do not require a Building Permit (per California Building Code 105.2 "Work Exempt from Permit").
Per the California Residential Code detached accessory structure not exceeding 120 square feet does not require a building permit if there is no plumbing, electrical, and or mechanical equipment. Please note, Sheds and/or Structures under 120 square feet do require a Planning Permit.
