Vermont Statewide Rule

Vermont Mandates Accessory Dwelling Units Statewide

Few RestrictionsApplies statewide across Vermont (2026)

Vermont law requires every municipality with zoning to permit at least one accessory dwelling unit per single-family lot as a permitted use, preempting local prohibitions. The HOME Act of 2023 further expanded ADU rights and limited local restrictions on size and parking.

Key Facts

Statute: 24 V.S.A. § 4412(1)(E)
ADUs per lot: At least one allowed
HOME Act: Act 47 of 2023
Permitted use: Required statewide
Appeal venue: Environmental Division

Source: Vermont General Assembly

Full Breakdown

Under 24 V.S.A. § 4412(1)(E), municipal zoning bylaws must allow an accessory dwelling unit on any owner-occupied single-family lot as a permitted use, subject only to standards equivalent to those for single-family dwellings. Act 47 of 2023 (HOME Act) eliminated owner-occupancy requirements in many cases, capped local parking demands, and prohibited municipalities from requiring conditional use review for ADUs meeting basic criteria. Setbacks, lot coverage, and height must mirror those for the principal dwelling. Municipalities cannot impose minimum ADU size requirements above state code.

Violations & Penalties

Municipal denial of conforming ADU applications is appealable to Environmental Division. Towns face reversal, attorney fees under 24 V.S.A. § 4470, and Vermont Housing Finance Agency penalties.

Frequently Asked Questions

Can my Vermont town ban accessory dwelling units?

No. State law in 24 V.S.A. § 4412(1)(E) requires every zoning municipality to allow at least one ADU per single-family lot. Outright bans are preempted and unenforceable.

Does the owner have to live on the property?

Following the HOME Act of 2023, owner-occupancy requirements were largely eliminated. Some municipalities retain limited residency conditions only where consistent with state law.

Can towns require extra parking for ADUs?

State law limits parking demands. Municipalities generally cannot require more than one space per ADU, and cannot require parking that exceeds principal dwelling standards.

Sources

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