A homeowner in Fenton, California, approached New Avenue because she wanted to add a guest house to her property. She planned to use the new space for her children and grandchildren, and she wanted the option of renting it out occasionally. Here’s what it cost.

Converting a garage into a livable space like this is one of the best ways to update a home. An ADU is so versatile, and with quality design and construction, it will last for generations, adapting to the needs of the homeowner and bringing sustainability, freedom, and connection, throughout its long lifetime. Here are floor plans for a garage conversion in Berkeley

A small accessory building like this one costs around $208,000 for design, permitting, all site work/engineering, and construction. When adding a backyard cottage or in-law suite of this size in Berkeley, you can expect to see a tax increase equal to about one-half of one percent of the full cost of the project. Here's what that means for this Berkeley home.