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Local ADU Rules

City of Windsor

Last Updated September 13, 2024

ADU Contact:

Kim Jordan, kjordan@townofwindsor.com
Kim Voge, kvoge@townofwindsor.com
Kevin Locke, klocke@townofwindsor.com
Jennifer Sedna, jsedna@townofwindsor.com

Standards	Details
Zones allowed	Any residential.
Lot Restrictions	800 sf ADU allowed regardless of lot coverage limitations.
Minimum Lot Size	None.
Min/Max ADU Size	Minimum: None. Maximum: 850 sf for studio or one bedroom; 1,000 sf for two or more bedrooms.
ADU Building Height	Detached: 16 feet, or 25 feet if built above garage. Attached: Same as that of primary dwelling.
Setbacks	Attached: Same front setback as primary dwelling, 4-foot setback from side and rear property lines. Detached: 4 foot side and rear yard setbacks and cannot be located with a required front yard setback. 6 foot separation from other accessory structures and the main dwelling unit are also required.
Parking Requirements	One off-street parking space, allowed in driveway or in tandem.
Owner Occupancy	Not required.
Sample fees from recent permits	450 sf garage converted to ADU: Total: $419.57, School fees exempt under 500 SF. 840 sf new detached ADU: Total: $2,990.70 (Town), School Fees: $1,183.20 *Fees are specific to each project and will vary. Fees change regularly. These are provided as examples only.
Other requirements	Cannot be used as a short-term rental (terms of less than 30 days).
Process	ADUs are processed through a building permit within 60 days of a complete application. Planning reviews the building permit plans and submittal information for compliance with the Zoning Ordinance requirements for ADUs. ADUs are required to be architecturally compatible with the main house and to include privacy features, when they have the potential to impact residences on adjacent parcel(s). Disclaimer: standards and process may vary. Consultation with the contact is recommended before starting any project.
Exceptions	A person with disabilities may be able to request a reasonable accommodation to allow modifications to the requirements.

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