Frequently asked questions
What is an ADU?
An ADU, or Accessory Dwelling Unit, is an additional living space that complements a main home structure. ADUs can be attached to the main home, converted from an existing space, or built as a new, detached unit. In California, ADUs must include areas for living, sleeping, cooking, and a bathroom, making them fully livable structures.
What are the regulations around ADUs?
In California, for ADUs under 800 square feet, all local jurisdictions must adhere to a straightforward set of standard regulations. They are not permitted to impose stricter standards regarding the structure itself, its height, design, lot ratios, or setbacks. ADUs can be situated as close as 4 feet from property lines and can reach a height of up to 16 feet. While ADUs can be as large as 1,200 square feet, once they exceed 800 square feet, local jurisdictions regain some authority to enforce additional local regulations.
Can an ADU be the main home/the only structure on a property?
Yes and no — ADUs, or Accessory Dwelling Units, are designed to be secondary to a main home structure to qualify as ADUs. However, someone could technically buy and use an ADU structure as a primary residence; they would just need to go through the separate process of obtaining the necessary main home permits, which is different from an ADU permit.
Do you need power, water, and sewage connections?
Yes, all ADUs require connections to the property’s existing utilities for power, water, and sewage.
How is the Vessel ADU set up and connected?
The ADU is installed on a slab foundation, with utilities like plumbing, electricity, and AC pre-installed and connected to your property’s grid.
What preparations are needed for delivery?
Land must be prepared for a slab foundation, and the site must allow access for delivery.
How long does installation take?
Once the ADU arrives on-site, installation typically takes a few days, depending on site conditions.
What outlets are available in the Vessel ADU?
Standard outlets are included, allowing easy connection of appliances and devices.
Where are Vessel ADUs produced?
Vessel ADUs are currently manufactured in China and shipped to the U.S. for installation.
How is the Vessel ADU transported and how long does it take?
The ADU is shipped from Yantian Port, China, to Oakland, California, typically taking a few weeks.
Do you need a permit, and how many ADUs are allowed?
Yes, permits are required, and generally, one ADU is allowed per property, depending on local laws.
Do I need to provide parking?
No, parking is generally not required for ADUs in California.