In California, accessory dwelling units (ADUs) are rapidly becoming a popular choice among homeowners who want to expand the usable living space on their properties. Since ADUs offer a solution to the growing need for affordable housing, the state has laws in place that encourage people to build on their land. However, there are also regulations in place to protect property values and neighbors from potential nuisances. For the most part, an ADU must be smaller than the main house. But the laws and regulations regarding ADU sizes can vary from one jurisdiction to the next. Below, the pros from Forever Builders, the full home and kitchen remodelers Costa Mesa homeowners trust for exceptional craftsmanship and outstanding service, explain what you need to know about size restrictions for ADUs in California.
Know the General Size Limits in the State
California requires every city and county in the state to allow detached ADUs that are at least 800 square feet in size. However, you’ll find many local municipalities allow for ADUs that are up to 1,200 square feet. As you explore the building laws and regulations in your area, you’ll also find that attached, detached, and conversion ADUs may be required to follow different rules.
Consider the Difference between Attached & Detached ADUs
Since an ADU is meant to be a secondary residence, the general view is that it should be smaller than the main house. Typically, this means an attached ADU can be no bigger than 50 percent of the current square footage of the house it’s being built onto. You may also face height restrictions for the ADU.
If you choose to build a detached ADU, you only need to worry about the maximum size you can build according to the state and local rulings. Technically, this could mean building an ADU that’s bigger than a main house that has square footage smaller than the maximum size allowed for secondary units. Since most primary homes in the state are larger than 800 to 1,200 square feet, it’s rare but possible to build an ADU that’s bigger than the main house.
Understand the Property Line Setback Rules
When you prefer to maximize the size of the ADU you build, it’s also important to consider the laws regarding how close a new dwelling can be to the property lines. The current general rule is that ADUs must be at least four feet away from the property line, and you’ll also need to ensure detached ADUs are 10 feet away from the primary residence.
Delve Deeper into the Complexities of ADU Sizing
As with any law, there are sometimes loopholes regarding ADU sizes. In some areas, waivers may be available to allow larger-sized ADUs to assist with the need for senior housing or other priorities in a community. You’ll also find builders must meet certain requirements regarding permits, licensing, and inspections whenever you put a new ADU on a property. Working with an established remodeling contractor who is familiar with your local laws and regulations is the best way to find out exactly how big your new ADU can be in comparison to the main house.
When you’re ready to add an ADU to your home, make sure to hire the best contractors in the business. The team from Forever Builders are the Costa Mesa kitchen addition, full home remodeling, and ADU contractors homeowners can trust to provide the most affordable home remodeling services. From design to completion, we’ll help you create an ADU that meets all your expectations while keeping your costs within budget. To find out more about our outstanding remodeling services, give one of our friendly team members a call today.