421 Prospect St is a 2,430 square foot house on a 2,700 square foot lot with 4 bedrooms and 1 bathroom. - it last sold on May 31, 1996 for $231,000. Based on Redfin's Seattle data, we estimate the home's value is $1,311,842.
Single-familyProperty Type
1926Year Built
2,700 sq ftLot Size
$540Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,311,843
$1.1M since sold in May 1996$2,000 since October
Recently sold homes
Estimate history
This home's estimate is 0.9% higher than the average sale price ($1.30M) of 6 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Property details
Interior
Basement Information
Basement Sq. Ft: 810
Basement Finish: Finished
Bathroom Information
# of Full Baths: 1
Heating & Cooling
Heating Fuel Type: Gas
Heating Type: Forced Air
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Exterior
Exterior Information
Physical Condition: Average
Building Construction Quality: Average
Building Type: Single Family
View Information
View: City
Property Information
Subdivision Name: MERCERS 2ND ADD TO N SEATTLE
Living Sq. Ft: 2,430
Ground Floor Sq. Ft: 1,020
Building Sq. Ft: 2,460
# of Stories: 1.5
Legal Description: MERCERS 2ND ADD TO N SEATTLE E 45 FT PLAT BLOCK: 41 PLAT LOT: 4
Parking & Garage Information
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 230
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 2,700
Legal Lot Number: 4
Legal Block Number: 41
School Tax District: SEATTLE #1
Municipality Name: SEATTLE
Acres: 0.062
Zoning Code: LR3 (M)
County Use Description: SINGLE FAMILY(RES USE/ZONE)
Utility Information
Sewer Type: Public
Water Service Type: Public
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 4
Baths: 1.0
Sq. Ft.: 2,430
Stories: 1.5
Lot Size: 2,700 square feet
Style: Single Family Residential
Year Built: 1926
Year Renovated: —
County: King County
APN: 545780 1640
Home facts updated by county records on Sep 5, 2026
Around this home
Schools
Hay Elementary School
Public K-5 • Assigned • 0.3mi
6/10
McClure Middle School
Public 6-8 • Assigned • 0.8mi
8/10
Lincoln High School
Public 9-12 • Assigned • 2.2mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
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