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HB 900

Zoning; developmental and use of accessory dwelling units.

2025 Regular Session Introduced by Laura Jane Cohen

Virginia bill to ease zoning restrictions on accessory dwelling units to increase affordable housing supply while potentially reducing local land-use control.

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Bill Summary · HB 900

Legislative bill overview

HB 900 would modify Virginia's zoning laws to facilitate the development and use of accessory dwelling units (ADUs)—smaller, independent housing units on single-family residential lots, such as converted garages, basement apartments, or detached cottages. The bill aims to streamline local approval processes and reduce barriers to ADU creation, though specific provisions were modified through a committee substitute in early 2024.

Why is this important

ADUs are increasingly recognized as a tool to address housing shortages and affordability while maximizing existing residential land use. Virginia localities currently have significant discretion in restricting ADUs through zoning ordinances, limiting supply in tight housing markets. Changes to state zoning law could substantially increase housing options for renters, aging parents, adult children, and others seeking affordable housing alternatives.

Potential points of contention

  • Local control vs. state mandate: Municipalities may resist state-level requirements that override local zoning decisions and community preferences regarding neighborhood density and character
  • Infrastructure and services capacity: Concerns about whether existing utilities, parking, schools, and emergency services can accommodate increased housing density without public investment
  • Property value and neighborhood impacts: Homeowners in single-family areas may worry about effects on property values, privacy, parking availability, and perceived changes to neighborhood character

Compiled from official sources — confirm details with the bill’s official record.

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