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What Are You Allowed to Build at 311 Ne 56th Ave, Portland, OR, 97213?

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)

Probably Allowed
This property meets the requirements for an Internal ADU of up to 800 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 1,742 sq ft of zoning-counted floor area allowed By Right, or possibly more by Special Permit.

Multi Family

Home Addition

Probably Allowed
We estimate you can expand this property by up to 413 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

Streetview picture of 311 Ne 56th Ave, Portland, OR, 97213

Zoning Jurisdiction

PORTLAND

Parcel ID

R239503

Property Type

Single Family

Zone

RM1

Year Built

1997

Lot Size

1,742 sq ft

Gross Building Area

812 sq ft

Gross Floor Area

1,329 sq ft

Estimated

Living Area

1,329 sq ft

Basement Area

0 sq ft

Impervious Surface

812 sq ft

Estimated
46.6%of lot coverage

ADU rules for Portland, OR

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 311 Ne 56th Ave, Portland, OR, 97213?

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)

Probably Allowed
This property meets the requirements for an Internal ADU of up to 800 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 1,742 sq ft of zoning-counted floor area allowed By Right, or possibly more by Special Permit.

Multi Family

Home Addition

Probably Allowed
We estimate you can expand this property by up to 413 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

Streetview picture of 311 Ne 56th Ave, Portland, OR, 97213

Zoning Jurisdiction

PORTLAND

Parcel ID

R239503

Property Type

Single Family

Zone

RM1

Year Built

1997

Lot Size

1,742 sq ft

Gross Building Area

812 sq ft

Gross Floor Area

1,329 sq ft

Estimated

Living Area

1,329 sq ft

Basement Area

0 sq ft

Impervious Surface

812 sq ft

Estimated
46.6%of lot coverage

ADU rules for Portland, OR

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

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