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What Are You Allowed to Build at 22212 Ne Union Hill Rd, Unincorporated (King), WA, 98053?

Backyard Cottage

(Detached ADU)

Probably Allowed
This property meets the requirements for a Detached ADU of up to 2,000 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 2,000 sq ft allowed By Right, or possibly more by Special Permit.

Swimming Pool

Probably Not Allowed
This property likely does not meet the zoning requirements for a swimming pool. A variance or other zoning relief may be required. 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 22212 Ne Union Hill Rd, Unincorporated (King), WA, 98053

Zoning Jurisdiction

King County

Parcel ID

0925069041

Property Type

Single Family

Zone

RA

Year Built

1963

Lot Size

145,118 sq ft

Gross Building Area

4,023 sq ft

Gross Floor Area

3,441 sq ft

Estimated

Living Area

2,860 sq ft

Basement Area

0 sq ft

Impervious Surface

4,023 sq ft

Estimated
2.8%of lot coverage

ADU rules for Unincorporated King, 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 22212 Ne Union Hill Rd, Unincorporated (King), WA, 98053?

Backyard Cottage

(Detached ADU)

Probably Allowed
This property meets the requirements for a Detached ADU of up to 2,000 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 2,000 sq ft allowed By Right, or possibly more by Special Permit.

Swimming Pool

Probably Not Allowed
This property likely does not meet the zoning requirements for a swimming pool. A variance or other zoning relief may be required. 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 22212 Ne Union Hill Rd, Unincorporated (King), WA, 98053

Zoning Jurisdiction

King County

Parcel ID

0925069041

Property Type

Single Family

Zone

RA

Year Built

1963

Lot Size

145,118 sq ft

Gross Building Area

4,023 sq ft

Gross Floor Area

3,441 sq ft

Estimated

Living Area

2,860 sq ft

Basement Area

0 sq ft

Impervious Surface

4,023 sq ft

Estimated
2.8%of lot coverage

ADU rules for Unincorporated King, WA

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

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