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What Are You Allowed to Build at 21 Fitchburg Rd, Ayer, MA, 01432?
Backyard Cottage
(Detached ADU)
Probably Allowed
This property meets the requirements for a Detached ADU of up to 900 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 900 sq ft allowed By Right, or possibly more by Special Permit.
Swimming Pool
This property may meet the zoning requirements to build a swimming pool. Some factors may affect feasibility. 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
This property may meet the zoning requirements to build a Single-Family home up to 56,084 sq ft of zoning-counted floor area allowed By Special Permit. Additional factors may affect feasibility.
Multi Family
Home Addition
The property may meet the zoning requirements to build a Home Addition up to 53,980 sq ft of zoning-counted floor area. Additional factors may affect feasibility.
Property facts
Zoning Jurisdiction
AYER
Parcel ID
0190110000000500
Property Type
Three Family
Zone
GB
Year Built
1988
Lot Size
44,866 sq ft
Gross Building Area
2,040 sq ft
Gross Floor Area
2,103 sq ft
Living Area
2,103 sq ft
Basement Area
0 sq ft
Impervious Surface
2,103 sq ft
4.7%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 21 Fitchburg Rd, Ayer, MA, 01432?
Backyard Cottage
(Detached ADU)
Probably Allowed
This property meets the requirements for a Detached ADU of up to 900 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 900 sq ft allowed By Right, or possibly more by Special Permit.
Swimming Pool
This property may meet the zoning requirements to build a swimming pool. Some factors may affect feasibility. 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
This property may meet the zoning requirements to build a Single-Family home up to 56,084 sq ft of zoning-counted floor area allowed By Special Permit. Additional factors may affect feasibility.
Multi Family
Home Addition
The property may meet the zoning requirements to build a Home Addition up to 53,980 sq ft of zoning-counted floor area. Additional factors may affect feasibility.
Property facts
Zoning Jurisdiction
AYER
Parcel ID
0190110000000500
Property Type
Three Family
Zone
GB
Year Built
1988
Lot Size
44,866 sq ft
Gross Building Area
2,040 sq ft
Gross Floor Area
2,103 sq ft
Living Area
2,103 sq ft
Basement Area
0 sq ft
Impervious Surface
2,103 sq ft
4.7%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.