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What Are You Allowed to Build at 680 Mill Hill Rd, Fairfield, CT, 06890?
Backyard Cottage
(Detached ADU)
Probably Allowed
This property meets the requirements for a Detached ADU of up to 1,274 sq ft allowed By Right, or possibly more by Special Permit.
In Home Apartment
(Conversion or Addition)
Probably Allowed
This property meets the requirements for an Internal ADU of up to 1,274 sq ft allowed By Right, or possibly more by Special Permit.
Swimming Pool
Probably Allowed
This property likely meets the zoning requirements to build a swimming pool. Based on applicable zoning limits, the estimated buildable area for a pool. Final feasibility may depend on site-specific conditions and local interpretation.
Single Family
Probably Allowed
This property likely meets the zoning requirements to build a Single-Family home up to 14,810 sq ft of zoning-counted floor area allowed By Right, or possibly more by Special Permit.
Multifamily
Home Addition
Probably Allowed
We estimate you can expand this property by up to 11,625 sq ft under current zoning rules. This may allow for a horizontal addition, a vertical addition, or both, depending on design and permitting.
Property facts
Zoning Jurisdiction
FAIRFIELD
Parcel ID
2280360000
Property Type
Single Family
Zone
AA
Year Built
1917
Lot Size
74,052 sq ft
Gross Building Area
3,320 sq ft
Gross Floor Area
3,185 sq ft
Living Area
3,051 sq ft
Basement Area
0 sq ft
Impervious Surface
3,320 sq ft
4.5%of lot coverage

Based on public data and AI. Check with a pro. Read More
© 2026 TheBuilder AI Inc. d/b/aFutureLot. All rights reserved.
What Are You Allowed to Build at 680 Mill Hill Rd, Fairfield, CT, 06890?
Backyard Cottage
(Detached ADU)
Probably Allowed
This property meets the requirements for a Detached ADU of up to 1,274 sq ft allowed By Right, or possibly more by Special Permit.
In Home Apartment
(Conversion or Addition)
Probably Allowed
This property meets the requirements for an Internal ADU of up to 1,274 sq ft allowed By Right, or possibly more by Special Permit.
Swimming Pool
Probably Allowed
This property likely meets the zoning requirements to build a swimming pool. Based on applicable zoning limits, the estimated buildable area for a pool. Final feasibility may depend on site-specific conditions and local interpretation.
Single Family
Probably Allowed
This property likely meets the zoning requirements to build a Single-Family home up to 14,810 sq ft of zoning-counted floor area allowed By Right, or possibly more by Special Permit.
Multifamily
Home Addition
Probably Allowed
We estimate you can expand this property by up to 11,625 sq ft under current zoning rules. This may allow for a horizontal addition, a vertical addition, or both, depending on design and permitting.
Property facts
Zoning Jurisdiction
FAIRFIELD
Parcel ID
2280360000
Property Type
Single Family
Zone
AA
Year Built
1917
Lot Size
74,052 sq ft
Gross Building Area
3,320 sq ft
Gross Floor Area
3,185 sq ft
Living Area
3,051 sq ft
Basement Area
0 sq ft
Impervious Surface
3,320 sq ft
4.5%of lot coverage

Based on public data and AI. Check with a pro. Read More
© 2026 TheBuilder AI Inc. d/b/aFutureLot. All rights reserved.