Special zoning regulations apply to ADU construction in Calabasas. ADUs are allowed in residential areas, but there are some specific restrictions. In our city, we can build ADUs in zones from R-1 to R-20. All ADUs are required to comply with local building codes and zoning laws.
| Plot Size | Single-family (maximum floor area) | Duplex and Multi-Family (Maximum floor area) |
| 4,500 | 1,000 sq ft | 700 sq ft |
| 6,500 | 1,300 sq ft | 900 sq ft |
| 9,000 | 1,600 sq ft | 1,100 sq ft |
| 13,000 | 2,200 sq ft | 1,400 sq ft |
| 18,000 | 2,800 sq ft | 1,800 sq ft |
The height of the ADU in Calabasas cannot exceed the height of the main house. Detached ADUs can have a maximum height of up to 16 feet. The attached ADU can be equal to the height of the main house. Two-story ADUs are allowed, but special approval is required.
The extent of building coverage is very important for ADUs in Calabasas. The total coverage of the main building and ADU should not exceed 40% of the area of the plot. Our experienced engineers will help you follow this rule. It is essential to maintain adequate open space on the plot.
Single-Family:
Duplexes and Multi-Family:
The exterior design of the ADU should match the main house. We take special care of color, material and architectural style. It is necessary to use high-quality materials on the exterior walls of the ADU in Calabasas. Our team will provide you with the best design options.
An additional parking space is required for ADU in Calabasas. This place can be in the garage or in the open. The size of the parking lot should be at least 9×18 feet. Exemption from parking requirement may be obtained in certain circumstances.
Setback rules are very important for ADUs in Calabasas. A minimum setback of 20 feet is required at the front. The side yard setback should be 5 feet and the rear yard setback 10 feet. It is necessary to follow these rules.
| Zone | Minimum Lot Area |
| R-18 | 4,800 sq. ft. |
| R-12 | 7,200 sq. ft. |
| R-8 | 9,500 sq. ft. |
| R-6 | 14,000 sq. ft. |
| R-3 | 18,000 sq. ft. |
Proper utility connections are extremely important for ADUs. We install separate meters for electricity, water and sewer. All connections are made according to local codes. Our team will help you get all the necessary permits.
Gas and electricity connections are installed by specialists. We work in coordination with utility companies. All connections are designed for safe and long-term use. We also provide regular maintenance advice.
Fire safety is a top priority for ADUs in Calabasas. Each ADU should have a smoke detector and carbon monoxide alarm. Windows and doors for emergency exits must be in accordance with the rules. We install all necessary fire safety equipment.
There are special rules for renting out short-term ADUs in Calabasas. ADUs cannot be rented out for a period of less than 30 days. The use of ADU for commercial activities is limited. Home offices are allowed, but cannot create customer service centers or retail stores.
ADU construction in Calabasas must be in accordance with California building codes. The safety and stability of the building is a top priority. We follow all the necessary codes. Regular inspection and quality control are ensured.
The process of obtaining an ADU permit in Calabasas is simple. Our team will help you prepare all the necessary documents. The permit application should include all necessary maps and details.
| Permit Type | cost |
| Building Permits | $1,800 – $4,500 |
| Electrical Permit | $200 – $450 |
| Plumbing Permit | $180 – $380 |
| Mechanical Permit | $130 – $280 |
| Demolition Permit | $90 – $180 |
| Landscaping Permit | $40 – $90 |
Property for ADU in Calabasas must meet some basic requirements. The plot size should exceed the minimum requirement. The land should be flat or have a minimum slope. The existing infrastructure should be in good condition.
Setback rules on the front are very important. A distance of at least 25 feet from the main road is required. Special rules apply to corner plots. Landscaping can be done in the setback area.
The side yard setback should be 5 feet on both sides. A minimum setback of 10 feet at the rear is required. Discounts can be obtained in special circumstances. It is essential to keep the setback area clean.
There are special rules for open spaces and backyards. At least 30% of the total plot area should remain open. There should be enough space for children to play and garden. Natural light and air flow should be maintained.
Properties eligible for ADUs in Calabasas include single-family homes, duplexes, and multi-family buildings. The plot size must meet the minimum requirements. All necessary permits and approvals must be obtained.
The existing structure on the property should be in good condition. Utility connections must be available. The land should be in a special zone. There should be parking.
Junior ADUs are built inside the main house. Their size is limited to a maximum of 500 square feet. The kitchen can be shared. Separate entrance is required. Parking is not required for junior ADUs.
Pre-approved ADU designs are available in Calabasas. Using these designs speeds up the permit process. Adherence to all the necessary standards and codes is ensured beforehand. The manufacturing process is simple and fast.
Our team will help you choose the most suitable pre-approved design. Small changes can be made to these designs as needed. Cost and time saved.
ADU Builders CA is ready to make your ADU project a success. Our expert team will provide you with guidance every step of the way. Contact us today for a free consultation. Your dream is our priority.
Fire sprinklers are only required if the primary dwelling also has them.
ADUs typically require a minimum setback of 4 feet from property lines.
Separate utility connections are optional but not mandatory for most ADUs.
The checklist includes design review, site plans, structural plans, permits, and financing.
You need site plans, floor plans, construction details, and a permit application.
Inspections typically include foundation, framing, plumbing, electrical, and final review.
Work with licensed professionals to design and construct your ADU to code.
You may need to revise and resubmit plans to the Calabasas planning office.
Submit complete and accurate documents and work with professionals to avoid delays.
ADUs under 750 sq. ft. are exempt from impact fees.
Yes, it includes checking structure, utilities, and obtaining conversion permits.
Yes, ADUs must meet height, size, and setback requirements, and their design should complement the primary dwelling.
Yes, but you need to ensure the ADU fits within allowable lot coverage and setback rules.
ADUs must comply with California Building Codes, including foundation, framing, insulation, plumbing, and electrical requirements.
Yes, ADUs must comply with California Energy Code (Title 24) and include energy-efficient windows, insulation, and appliances.
You must submit a revised plan to the Calabasas Building Department and may incur additional fees or inspections.
Yes, ADUs near high-noise areas (e.g., busy roads) must include soundproofing measures such as double-glazed windows.
Yes, you can appeal to the city’s Planning Commission or seek adjustments to meet requirements.
Lot coverage varies by zoning but generally allows for up to 50% of the lot to be developed, including the primary dwelling and ADU.
