What does accessory dwelling unit mean — Portsmouth, VA
Last updated: September 24, 2026
What affects the price
Building an ADU involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.
About this service
An accessory dwelling unit is simply a secondary, self-contained living space located on the same lot as a primary house. It includes its own kitchen, bathroom, and sleeping area. People build them to increase property value, house family members, or create a source of passive income. If you are looking to maximize your land use, this is the definition you need.
Frequently asked in Portsmouth
Where can I find an accessory dwelling unit near me in Portsmouth?
Can I get accessory dwelling unit financing in Portsmouth?
What is a modular accessory dwelling unit?
A modular accessory dwelling unit is constructed in sections or modules off-site in a factory setting and then transported to your Portsmouth property for assembly. This method can offer a streamlined building process and consistent quality. These units are designed to meet all building codes and can be customized to fit your needs. They provide an efficient way to add living space.
What are local ADU services in Portsmouth?
Can I get an affordable accessory dwelling unit in Portsmouth?
Can I get 24-hour ADU service in Portsmouth?
What are accessory dwelling units (ADUs)?
Accessory dwelling units (ADUs) are secondary housing units on a single-family residential lot. They are smaller than the primary home and can be attached or detached. ADUs provide additional living space for family, guests, or rental income. They are designed to be self-sufficient with their own kitchen, bathroom, and living areas. ADUs are a flexible housing solution for many homeowners. We help you understand their potential.
Also serving nearby: Norfolk · Chesapeake · Hampton · Newport News · Virginia Beach
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Portsmouth — population 96,793; about 2,906 residents per square mile across 33.3 sq mi. ZIP codes covered include 23701, 23702, 23703, 23704, 23705, 23707, 23708, 23709.
Neighborhoods served in Portsmouth: Downtown Portsmouth, Olde Towne, Cradock, Olive Branch — and every surrounding area.
Areas we serve
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