Accessory Dwelling Units (ADU) are secondary housing units on the same property as a single-family home. You can build it a small cottage in your backyard or you might turn your garage into a small apartment. You can also fix up your attic or basement to create a separate living space.
ADUs are becoming more popular in San Jose because they offer many benefits. By building these ADUs in San Jose, you can increase your housing space, offer affordable housing options, and rent out this place. But you need to first understand what are the rules and regulations to build an ADU San Jose. Stay with us, as we have discussed all this in the below guide.
Basic Requirements for an ADU San Jose CA
Before you start building ADUs, you must be aware of the rules and regulations set by the state. Here are the specific guidelines:
- Zoning: ADUs are allowed in most residential zones in San Jose. You can also check whether your home falls under the residential zone or not by looking into San Jose’s official zoning Map or San Jose’s zoning ordinance.
- Size Limitations: The limit of detached ADUs in San Jose can be up to 1,000 square feet. Whereas, attached ADUs are limited to 50% of the size of the primary home which equals 800 square feet. Junior ADUs usually max out at 500 square feet.
- Height Restrictions: Detached ADUs can be up to 16 feet in height. However, if you are close to the property line, there might be additional restrictions.
- Setbacks: Most ADUs need a minimum setback of 4 feet from the side and rear property lines.
- Parking: New ADUs typically don’t require additional parking. However, if the property is not near public transit, so specific parking guidelines may apply.
Permitting Process for ADUs in San Jose
1. Design and Planning
You can work with a designer or architect to create plans that meet city requirements.
2. Submit Application
A copy of your plans must be submitted to the San Jose Building Department for review.
3. Permit Review
Once you have submitted it, then the city reviews your plans and makes sure that the plan follows the local requirements or not.
4. Building and Inspections
When your permits are approved, you can start the construction process right away. The city will inspect the San Jose ADU throughout the process.
5. Final Approval
After all inspections are complete, the city issues final approval, and then your ADU is ready for use.
Costs and Financing
In San Jose, the cost of building an ADU can vary based on its design, size, and type. Detached ADUs generally cost more than attached units or garage conversions. To help finance the project, some homeowners consider options like home equity loans or construction loans.
Common FAQs
Is my ADU required to have a separate utility connection?
Not necessarily. ADUs can share utilities with the main home, but this may vary based on the ADU type and your specific needs.
Does San Jose allow the renting out of ADUs?
Yes, you can easily rent out your ADUs in San Jose. But if rentals are short-term rentals (less than 30 days), then it might be possible that more restrictions are applied.
Does San Jose offer incentives for ADU construction?
The city sometimes offers incentives such as fee waivers and financing programs, to encourage the development of ADUs.
