This New Virginia Law Could Turn Your Backyard Into Income
What homeowners across Virginia need to know about the state’s push to make ADUs more accessible by 2027
Senate Bill 531
Across Virginia, your backyard could soon become more than just outdoor space. It could become a source of income.
For years, adding a guest house, garage apartment, or in-law suite meant navigating zoning hurdles, public hearings, and strict local rules. In many cases, accessory dwelling units (ADUs) were allowed in theory but difficult to actually build. That’s about to change.
In April 2026, Governor Abigail Spanberger signed Senate Bill 531, a law that requires localities to allow ADUs in single-family residential zones starting July 1, 2027.
What’s Changing
At a high level, ADUs are shifting from a “maybe” to something much more predictable.
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Statewide Access: ADUs must be allowed statewide in single-family zoning areas
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"By-Right" Approval: No special use permits required if your project meets local code
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Fee Caps: Permit fees capped at $500 (excluding other building costs)
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Rental Freedom: You can rent to non-family members
For homeowners, this removes some of the biggest barriers that made ADUs difficult to pursue.
What’s Still Regulated
This isn’t a free-for-all. Localities can still require:
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Lease Minimums: Cities can require a minimum 30-day lease to prevent "short-term rental only" builds.
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Owner Occupancy: Localities can still require the owner to live in either the primary home or the ADU at the time of application.
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HOA Restrictions: Crucially, while this law overrides city zoning, it does not override private HOA covenants. If your neighborhood has a specific ban on secondary structures, the HOA can still enforce it.
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Compliance with building codes, utilities, and historic guidelines
There are also limits:
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One ADU per lot
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No selling the ADU separately
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No ADUs on multi-unit properties
For homeowners in Alexandria, this legislative shift brings a welcome sense of consistency and predictability to what has historically been a complex zoning navigation. While Alexandria was ahead of the curve with its own 2021 ordinance, Senate Bill 531 establishes a new statewide "floor" for property rights and fee caps that simplifies the path to approval. In neighborhoods like Old Town, historic district guidelines and design reviews will still play a vital role in the process to ensure architectural integrity; however, the new law provides a significant win for functional design: for lots over 2,500 square feet, the city can no longer limit an ADU to less than 500 square feet. This change offers homeowners much-needed flexibility to create a truly livable guest cottage or high-end rental suite that balances modern utility with our local community's historic character.
Virginia is currently facing a statewide home shortage, and this law is designed to add housing without large-scale development. For homeowners, that opens the door to rental income, flexible living spaces and increased property value. Even though this goes into effect in 2027, demand for builders, designers, and permit help could ramp up quickly. Planning early may give homeowners a real advantage.
Starting in 2027, your property may be able to do more than it could before. And for many homeowners, that could mean something simple: Your backyard becomes an opportunity.
