ADUs are allowed in ClintonTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Clinton, CT
Is your property eligible for an ADU?
# of Properties
5,976
Owner-occupied
78%
Zoning districts
20
Avg Home Value
$298,260
Median Lot Size
0.47 acres
Avg Income
$130,620
Residential Types:
5,976 housing units
Single Family
74%
2-3 Family
2%
Apts (4+ units)
3%
Other
20%
Zoning Districts:
7,239 parcels · 20 districts
R-10
26%(1,883)
R-20
21%(1,546)
R-80
19%(1,408)
R-30
13%(952)
Other
20%(1,450)
ADU Rules
What can you build in Clinton, CT?
Clinton, CT follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: By Right
- –Detached ADU: By Right
Interior / Attached ADU Size Limits
- –Maximum size of 1,000 sq ft or 30% of the principal dwelling’s floor area in residential districts
- –Maximum size of 1,000 sq ft or one-half of the principal building’s floor area in Business and Village zones (by Special Exception)
Detached ADU Size Limits
- –Residential districts: maximum 1,000 sq ft or 30% of the principal dwelling’s floor area for a detached ADU, whichever is less.
- –Business/Village districts by Special Exception: maximum 1,000 sq ft or one-third of the principal structure’s floor area for a detached ADU, whichever is less.
Max Units
- –1 ADU per single-family lot
- –0 ADUs for two-family or multifamily uses
- –Total ADUs per lot limited to 1, regardless of whether attached/internal or in an accessory structure
Parking
- –1/studio-1BR, 2/2BR ADU (plus principal-dwelling req.); shared access; no new curb cut; no front-yard parking
ADU State Law
What can you build in Connecticut?
- –Connecticut Public Act 21-29 (now CGS § 8-2o) established statewide ADU rules.
- –115 municipalities opted out of the state ADU provisions. In those towns, ADUs may still be allowed, but they are regulated solely under local zoning bylaws.
- –54 municipalities did not opt out and are subject to the state's default ADU standards. Local bylaws in these towns must allow at least the minimums required by state law.
- –At least one accessory apartment must be allowed as of right on any lot with a single-family home.
- –Towns must allow an ADU to be at least the lesser of 1,000 sq ft or 30% of the principal dwelling's Net Floor Area.
- –Setbacks, lot size, building frontage, lot coverage, height, and design requirements cannot be more restrictive than those applied to the principal dwelling.
- –Only one parking space can be required per ADU.
- –A passageway between units
- –A separate exterior entrance (unless required by code)
- –A relationship (e.g. familial or employment) between occupants
- –Age minimums for ADU tenants
- –Separate utility billing
- –Periodic permit renewals
- –Owner-occupancy is not required under state law, but towns may impose it.
- –Towns may regulate short-term rentals.
- –Requirements for wells or private sewerage systems still apply, but approval cannot be unreasonably withheld.
- –Towns may not condition ADU approval on fixing unrelated nonconformities on the lot.
- –No new utility connection fees may be charged unless the ADU is built with a new principal dwelling.
What's allowed on your lot?
These are the municipality-wide rules. What's allowed on a specific property also depends on state laws, setbacks, floor area ratio, lot coverage, environmental constraints, topography, and other property-specific factors. Search your address on FutureLot to see what's allowed on your property.
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ADU rules in other Connecticut municipalities
Rules change at the town line. Check the municipality your property is actually in.
Lower Connecticut River Valley County