See real Virginia Beach costs by scope, the permits the city requires, and a realistic timeline — then post one brief and compare bids from licensed, insured local ADU builders.
An accessory dwelling unit (ADU) — an in-law suite, a detached cottage, a garage conversion, or a finished apartment over a garage — lets a Virginia Beach property house a parent, an adult child, or a rental tenant with its own kitchen, bath, and entrance. It is one of the most heavily regulated projects a homeowner can take on here: whether you can build one, and what form it can take, is governed by your zoning district, lot size, setbacks, and utility capacity, so the contractor you choose should confirm what your specific lot allows before quoting the build.
BidBro lets you describe your Virginia Beach ADU once — a detached unit, an attached in-law suite, a basement or garage conversion, or an above-garage apartment — and compare bids from licensed, insured local general contractors who handle the zoning review, permits, foundation, framing, and the separate kitchen/bath, electrical, plumbing, and HVAC that an independent living unit requires. Below are real local cost tiers, the rules that drive them, and a realistic timeline.
Browse the full Virginia Beach contractor directory or post your job to reach all of them at once.
Virginia Beach ADU pricing depends on whether you convert existing space or build new, the size, and the level of finish. Typical local all-in ranges:
| Service | Typical Virginia Beach range |
|---|---|
| Garage or basement conversion (reuses the shell; adds kitchen, bath, egress, MEP) | $60,000 – $110,000 |
| Attached in-law suite addition (ties into the home’s structure, roofline, and utilities) | $90,000 – $170,000 |
| Apartment above a garage (new structure + full second-unit MEP and stairs) | $120,000 – $200,000 |
| Detached ADU / backyard cottage (stand-alone foundation, structure, and utility runs) | $150,000 – $260,000+ |
Ranges are typical local estimates; post your project on BidBro for exact quotes from Virginia Beach pros.
Timelines are typical for Virginia Beach; permitting and material lead times are the biggest variables.
In Virginia Beach, converting an existing garage or basement into an in-law suite typically runs $60,000–$110,000 because it reuses the shell but still adds a kitchen, bath, egress, and mechanical, electrical, and plumbing. An attached in-law suite addition runs $90,000–$170,000, an apartment above a garage $120,000–$200,000, and a stand-alone detached ADU $150,000–$260,000 or more once you add a separate foundation, structure, and utility runs.
It depends on your zoning district, lot size, and setbacks — some Virginia Beach lots allow an attached or detached accessory dwelling unit and others do not, and the rules change over time. Before you design anything, have a licensed local general contractor confirm what your specific lot permits with the city’s Planning and Permits and Inspections Division. Pricing a build before that check is the most common ADU mistake.
Yes. Because an ADU is a full dwelling unit, it needs a building permit plus separate electrical, plumbing, and mechanical permits, all issued through the Permits and Inspections Division at the Municipal Center (2405 Courthouse Drive). Flood-zone lots add elevation requirements and septic lots may need a Health Department review. A licensed general contractor pulls the permits and schedules the inspections.
Often yes, and a garage conversion is usually the most affordable ADU at roughly $60,000–$110,000 because the foundation, walls, and roof already exist. The work is in bringing it up to dwelling standards: a permitted kitchen and bath, proper egress and insulation, and electrical, plumbing, and HVAC for an independent unit. Zoning still has to allow it, so confirm your district and parking requirements first.
Most Virginia Beach ADUs take about 4–8 months from contract to final inspection, with feasibility, zoning, and design (6–12 weeks) typically the longest phase. A garage or basement conversion is faster than a new detached unit because the structure already exists. Flood-zone elevation, septic capacity, or a service-panel upgrade can each extend the schedule.
Post your ADU project on BidBro with the type (detached unit, attached in-law suite, or garage/basement conversion), rough size, and finish level. Local Virginia Beach general contractors respond with quotes you can compare on price, scope, and timeline, and you can confirm each one holds the right DPOR license class and insurance and has built accessory dwelling units before you hire.
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