ADUs & Conversions In

ADUs & Conversions Experts

The California Licensed Contractor

Stonehammer Construction

What Is ADUs & Conversions?

Residential Construction & Rehabilitation

An Accessory Dwelling Unit (ADU) is a secondary housing unit on a single-family residential lot. At Stonehammer Construction, we specialize in both detached ADUs (stand-alone structures) and conversions, such as transforming an underutilized garage or basement into a fully functional living space. These projects are designed to provide independent living quarters complete with a kitchen, bathroom, and sleeping area.

Stonehammer Construction

When Is ADUs & Conversions Necessary?

Adding an ADU or converting existing space is an ideal solution for homeowners looking to increase their property value or generate rental income. It is also a popular choice for families needing "multigenerational living" options, such as providing a private space for aging parents or adult children. If you have unused square footage in a garage or a spacious backyard, a conversion allows you to maximize your property’s footprint without the need for a traditional home addition.

Stonehammer Construction

What Is Required For ADUs & Conversions?

Success in ADU development requires a deep understanding of local California zoning laws, setback requirements, and utility connections. Our team at Stonehammer Construction manages the technical requirements, including structural engineering, specialized plumbing for new kitchen/bath lines, and electrical upgrades to support the new unit. As a licensed contractor (CSLB# 1048500), we ensure that every conversion meets strict California building codes and safety standards.