City of Charlottesville ADU rules — what you can build and when.
A ground-up zoning rewrite made Charlottesville broadly ADU-permissive.
Verify locally — rules are changing ahead of July 1, 2027. This page reflects our working understanding at publication. Always confirm with the City of Charlottesville zoning department before you design or file. We handle that verification as part of every Readiness Assessment.
Charlottesville in one screen.
- New Development Code (Chapter 34) effective February 19, 2024
- Written to be ADU-permissive across residential districts
- BAR approval required for exterior work in architectural design control districts
- Municipal water and sewer — no septic constraint
Reading between the lines.
Charlottesville did something unusual: rather than bolting an ADU provision onto an old ordinance, it replaced the entire zoning code. The Development Code adopted in December 2023 and effective February 2024 was written from the ground up to allow more housing on existing residential lots, accessory dwellings included.
One naming caution worth stating plainly: Charlottesville also runs an inclusionary 'Affordable Dwelling Unit' program that shares the ADU acronym. It is a completely separate thing from an accessory dwelling unit, and conflating the two is a common source of confusion in city documents and news coverage.
The practical constraints are urban ones. Historic districts require Board of Architectural Review approval for exterior work, small in-town lots limit footprint, and mature tree canopy is protected. On the plus side, city water and sewer mean the septic question that governs most Piedmont projects simply doesn't arise here.
Charlottesville answers.
Are ADUs allowed in Charlottesville?
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Yes. Charlottesville's Development Code (Chapter 34), effective February 19, 2024, was written as part of the Cville Plans Together reform to permit accessory dwellings in residential districts.
Is an 'ADU' in Charlottesville an accessory dwelling or an affordable unit?
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Both terms are used. Charlottesville runs a separate inclusionary Affordable Dwelling Unit program that shares the acronym — it is unrelated to accessory dwelling units, so read city documents carefully.
How big can a Charlottesville accessory dwelling be?
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The prior framework used 40% of the principal dwelling's floor area for internal units and 40% of its footprint for detached units. Confirm whether those caps carried into the 2024 Development Code before designing.
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