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What Are You Allowed to Build at 9511 Interlake Ave N, Seattle, WA, 98103?

Backyard Cottage

(Detached ADU)

Probably Allowed
This property meets the requirements for a Detached ADU of up to 1,000 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 1,000 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.

Multifamily

Home Addition

Probably Allowed
We estimate you can expand this property under current zoning rules. We weren't able to identify a specific size limit, but an addition may be possible horizontally, vertically, or both, depending on design and permitting.

Property facts

Streetview picture of 9511 Interlake Ave N, Seattle, WA, 98103

Zoning Jurisdiction

SEATTLE

Parcel ID

4310701333

Property Type

Residential

Zone

LR3

Year Built

2015

Lot Size

1,518 sq ft

Gross Building Area

223 sq ft

Gross Floor Area

1,140 sq ft

Estimated

Living Area

1,140 sq ft

Basement Area

0 sq ft

Impervious Surface

223 sq ft

Estimated
14.7%of lot coverage

ADU rules for Seattle, WA

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 9511 Interlake Ave N, Seattle, WA, 98103?

Backyard Cottage

(Detached ADU)

Probably Allowed
This property meets the requirements for a Detached ADU of up to 1,000 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 1,000 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.

Multifamily

Home Addition

Probably Allowed
We estimate you can expand this property under current zoning rules. We weren't able to identify a specific size limit, but an addition may be possible horizontally, vertically, or both, depending on design and permitting.

Property facts

Streetview picture of 9511 Interlake Ave N, Seattle, WA, 98103

Zoning Jurisdiction

SEATTLE

Parcel ID

4310701333

Property Type

Residential

Zone

LR3

Year Built

2015

Lot Size

1,518 sq ft

Gross Building Area

223 sq ft

Gross Floor Area

1,140 sq ft

Estimated

Living Area

1,140 sq ft

Basement Area

0 sq ft

Impervious Surface

223 sq ft

Estimated
14.7%of lot coverage

ADU rules for Seattle, WA

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

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