A secondary unit, also known as an “in-law unit,” is an additional self-contained dwelling located on the same lot as an existing residential building. These units are often created within a pre-existing structure, but they can also be added as an extension to the main building or built separately as a carriage house or converted storage unit in the rear yard.
Secondary units are cost-effective because they typically require no additional land or government funding. They make use of existing structures and infrastructure—such as water, sewer, utilities, and landscaping—and owners can often participate in some of the construction work, making them less expensive to build than traditional housing.
The community benefits of secondary units are significant. They provide more affordable housing options throughout neighborhoods, expand the city’s housing supply through modest increases rather than concentrated developments, and create minimal visual impact on the surrounding area. Additionally, they support life-cycle housing, offering flexibility and stability for families over time.
Building a high-quality secondary unit requires the right expertise. At Blackhorse Construction, we are happy to discuss your project in detail and provide free estimates for individual projects.
Our team at Blackhorse Construction is skilled, innovative, and dedicated to serving our clients. We take pride in delivering smart, effective solutions and advancing industry standards while meeting the unique needs of each customer.