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What Are You Allowed to Build at 23 Montgomery St, Unincorporated (Madison), IL, 62067?

Backyard Cottage

(Detached ADU)

Probably Not Allowed
This lot does not meet the requirements for a Detached ADU. A variance may be requested through your local zoning authority

In Home Apartment

(Conversion or Addition)

Might be Allowed
This property may qualify for an Internal ADU, but there are some special considerations.

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 Not Allowed
This lot does not meet the zoning requirements to build a Single-Family home. A variance may be requested through your local zoning authority

Multifamily

Home Addition

Might be Allowed
The property may meet the zoning requirements to build a Home Addition up to 1,740 sq ft of zoning-counted floor area. Additional factors may affect feasibility.

Property facts

Streetview picture of 23 Montgomery St, Unincorporated (Madison), IL, 62067

Zoning Jurisdiction

Madison County

Parcel ID

162033203301020

Property Type

Residential

Zone

R-3

Year Built

1946

Lot Size

6,722 sq ft

Gross Building Area

2,267 sq ft

Gross Floor Area

1,621 sq ft

Estimated

Living Area

976 sq ft

Basement Area

0 sq ft

Impervious Surface

2,267 sq ft

Estimated
33.7%of lot coverage

ADU rules for Unincorporated Madison, IL

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 23 Montgomery St, Unincorporated (Madison), IL, 62067?

Backyard Cottage

(Detached ADU)

Probably Not Allowed
This lot does not meet the requirements for a Detached ADU. A variance may be requested through your local zoning authority

In Home Apartment

(Conversion or Addition)

Might be Allowed
This property may qualify for an Internal ADU, but there are some special considerations.

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 Not Allowed
This lot does not meet the zoning requirements to build a Single-Family home. A variance may be requested through your local zoning authority

Multifamily

Home Addition

Might be Allowed
The property may meet the zoning requirements to build a Home Addition up to 1,740 sq ft of zoning-counted floor area. Additional factors may affect feasibility.

Property facts

Streetview picture of 23 Montgomery St, Unincorporated (Madison), IL, 62067

Zoning Jurisdiction

Madison County

Parcel ID

162033203301020

Property Type

Residential

Zone

R-3

Year Built

1946

Lot Size

6,722 sq ft

Gross Building Area

2,267 sq ft

Gross Floor Area

1,621 sq ft

Estimated

Living Area

976 sq ft

Basement Area

0 sq ft

Impervious Surface

2,267 sq ft

Estimated
33.7%of lot coverage

ADU rules for Unincorporated Madison, IL

Based on public data and AI. Check with a pro. Read More

© 2026 TheBuilder AI Inc. d/b/aFutureLot. All rights reserved.