Special zoning regulations apply to ADU construction in Rancho Palos Verdes. ADUs are allowed in all residential areas. An ADU can be created with one main unit in the residential area. Two ADUs can also be sanctioned under special circumstances.
The size of the ADU depends on the area of your plot. The minimum ADU size is 150 square feet. The maximum size can be up to 50 percent of the main unit. Larger sizes may also be allowed in some special cases.
Lot Size Table:
| Plot Size | Single-family (maximum floor area) | Duplex and multi-family (maximum floor area) |
| 5,000 | 1,100 sq ft | 900 sq ft |
| 7,500 | 1,400 sq ft | 950 sq ft |
| 10,000 | 1,000 sq ft | 1,100 sq ft |
| 15,000 | 2,600 sq ft | 1,500 sq ft |
| 20,000 | 2,800 sq ft | 1,800 sq ft |
It is very necessary to follow the height limit of the ADU. The maximum height of ADU in our city has been set at 16 feet. The height of the ADU should be less than the height of the main building. Special rules apply in sloping areas.
Building coverage includes both the main house and the ADU. A maximum of 40 percent of your plot can be covered. It is necessary to maintain open space and greenery. All construction regulations must be followed.
There are several things to keep in mind while choosing the location of the ADU. Making ADUs in the back courtyard is considered the best option. ADU can also form in the side yard. Proper distance should be maintained from the main building.
Single-Family Homes:
Duplexes and Multi-family:
The exterior design should match the main building. Decide the location of windows and doors thoughtfully. Use the same material on exterior walls. The roof design should be like the main building.
Parking arrangements will have to be made according to the rules. Parking of a car is compulsory. The option will have to be provided when the garage is converted to an ADU. Roadside parking is allowed in some areas.
Adherence to setback rules is mandatory. Keep a distance of at least 20 feet towards the front. A setback of 5 feet on the side is a must. A distance of 10 feet towards the back is required.
There is a rule of minimum plot size in the RF zone. The size of ADU will be limited in small plots. There are more options available in larger plots. The rules vary by zone.
Zone Table:
| Zone | Minimum plot area |
| R-20 | 4,800 sq. ft. |
| R-10 | 7,200 sq. ft. |
| R-7 | 9,500 sq. ft. |
| R-5 | 14,500 sq. ft. |
| R-2.5 | 19,500 sq. ft. |
Utility connection is one of the most important aspects for ADUs. It may be necessary to install a new meter for electricity. The water connection may have to be separated from the main line. Safety rules must be followed for the gas line. Sewer connections require special permits. Separate arrangements may have to be made for internet and cable.
All utility connections to ADUs should be installed by a qualified certified contractor. There is a rule to keep electrical wires underground. Decide the location of the water meter carefully. The slope of the sewer line should be reasonable. Storm water drainage systems may have to be built separately. All connections must conform to the local code.
There are strict rules for fire safety. It is mandatory to install smoke detectors and carbon monoxide alarms. There should be an emergency exit. Availability of fire extinguishers is essential. All doors must be fire resistant.
Special rules apply for short-term rentals. Permission to run a business from home is limited. Airbnb will require a separate license. Adherence to parking and noise rules is essential. Complaints of neighbours must be addressed.
It is necessary to follow the building code. All construction works should be carried out by a recognized contractor. Regular inspections are necessary. Adherence to safety standards is mandatory. Get all permits on time.
The process of obtaining a permit can be time-consuming. Keep all the documents ready in advance. Make a detailed map of the plan. Be available in time for inspection. Submit all fees on time.
Permit Cost Table:
| Permit Type | cost |
| Building Permits | $1,800 – $4,800 |
| Electrical Permit | $200 – $450 |
| Plumbing Permit | $180 – $750 |
| Mechanical Permit | $130 – $450 |
| Demolition Permit | $90 – $180 |
| Landscaping Permit | $40 – $90 |
Some basic requirements must be met for the property. The minimum size of the plot should exceed the prescribed limit. The slope of the ground should be less than 25%. Special clearance is necessary in areas of earthquakes and landslides.
Parking arrangements should be made according to rules. A car parking space is mandatory. Arrange alternative parking when the garage is converted into an ADU. Get special permission for roadside parking.
A distance of at least twenty feet from the front is mandatory. Build the ADU backwards from the line of the main building. Perform landscaping to maintain visibility. Plan the gate and entryway.
The side setback should be at least five feet. Ten feet of distance in the back part is required. Take care of the privacy of the neighbor. Leave way for emergency vehicles.
Provision of open space is important. Keep at least 20% of the space free in the back courtyard. Keep children’s play areas safe. Arrange greenery and trees.
Eligible properties include single-family housing. Our team will examine your property and determine its eligibility. The size of the plot should be suitable for the ADU. Permission must be granted as per zoning regulations. Parking and setback requirements must be met. Sufficient space should be available for construction.
ADUs can also be built in multi-family buildings. Special rules apply to this. The consent of all existing tenants is required. The capacity of the utility connection will be checked. It is important to follow fire safety standards. Impact on community facilities will be assessed.
Multifamily properties
The junior ADU is built inside the main building. Its size is limited to 500 square feet. The kitchen can be shared. A separate entrance is necessary. The bathroom can be attached to the existing home.
We have many pre-approved ADU designs available. These designs will save you time and money. The permit process will be completed faster. Construction work will start soon.
Choose designs according to different size and budget. Our team will help you choose the best option. All designs conform to local regulations. Quality and convenience are guaranteed.
Start your ADU project today. Our expert team will guide you. We will be happy to make your dreams come true. Contact us for a free consultation. Your success 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 Rancho Palos Verdes 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 Rancho Palos Verdes 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.
