12121 Upper Preston Rd SE is a 450 square foot home on a 1.01 acre lot with 1 bedroom and 1 bathroom. Based on Redfin's Issaquah data, we estimate the home's value is $488,477.
ManufacturedProperty Type
1970Year Built
1.01 acresLot Size
$1,086Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$488,477
$37K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 44.6% lower than the average sale price ($881K) of 6 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2026
$7,069 (+4.6%)
$344,000 + $318,000
$662,000
2025
$6,755 (+5.2%)
$344,000 + $318,000
$662,000
2024
$6,422 (−5.9%)
$325,000 + $310,000
$635,000
2023
$6,823 (+17.9%)
$296,000 + $281,000
$577,000
2022
$5,789 (+7.2%)
$362,000 + $341,000
$703,000
2021
$5,402 (+20.8%)
$302,000 + $184,000
$486,000
2020
$4,472 (+2.7%)
$280,000 + $136,000
$416,000
2019
$4,353 (+4.2%)
$207,000 + $137,000
$344,000
2018
$4,177 (+12.2%)
$207,000 + $137,000
$344,000
2017
$3,723 (+3.2%)
$182,000 + $120,000
$302,000
2016
$3,609 (−63.6%)
$169,000 + $101,000
$270,000
2015
$9,908 (+198.6%)
$163,000 + $95,000
$258,000
2014
$3,318 (−67.6%)
$150,000 + $77,000
$227,000
2013
$10,231 (+198.1%)
$172,000 + $52,000
$224,000
2012
$3,433 (−2.8%)
$172,000 + $52,000
$224,000
2011
$3,533 (+5.2%)
$187,000 + $59,000
$246,000
2010
$3,359 (−2.7%)
$187,000 + $55,000
$242,000
2009
$3,452
$220,000 + $76,000
$296,000
Tax history for 12121 Upper Preston Rd SE
Year
Property tax
Land + Additions
Assessment*
2026
$7,069 (+4.6%)
$344,000 + $318,000
$662,000
2025
$6,755 (+5.2%)
$344,000 + $318,000
$662,000
2024
$6,422 (−5.9%)
$325,000 + $310,000
$635,000
2023
$6,823 (+17.9%)
$296,000 + $281,000
$577,000
2022
$5,789 (+7.2%)
$362,000 + $341,000
$703,000
2021
$5,402 (+20.8%)
$302,000 + $184,000
$486,000
2020
$4,472 (+2.7%)
$280,000 + $136,000
$416,000
2019
$4,353 (+4.2%)
$207,000 + $137,000
$344,000
2018
$4,177 (+12.2%)
$207,000 + $137,000
$344,000
2017
$3,723 (+3.2%)
$182,000 + $120,000
$302,000
2016
$3,609 (−63.6%)
$169,000 + $101,000
$270,000
2015
$9,908 (+198.6%)
$163,000 + $95,000
$258,000
2014
$3,318 (−67.6%)
$150,000 + $77,000
$227,000
2013
$10,231 (+198.1%)
$172,000 + $52,000
$224,000
2012
$3,433 (−2.8%)
$172,000 + $52,000
$224,000
2011
$3,533 (+5.2%)
$187,000 + $59,000
$246,000
2010
$3,359 (−2.7%)
$187,000 + $55,000
$242,000
2009
$3,452
$220,000 + $76,000
$296,000
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
RA-2.5
Rural Area Zone
The purpose of the rural zone (RA) is to provide for an area-wide long-term rural character and to minimize land use conflicts with nearby agricultural or forest production districts or mineral extraction sites. These purposes are accomplished by: Limiting residential densities and permitted uses to those that are compatible with rural character and nearby resource production districts and sites and are able to be adequately supported by rural service levels; Allowing small scale farming and forestry activities and tourism and recreation uses that can be supported by rural service levels and that are compatible with rural character; Increasing required setbacks to minimize conflicts with adjacent agriculture, forest or mineral zones; and Requiring tracts created through cluster development to be designated as permanent open space or as permanent resource use.; Use of this zone is appropriate in rural areas designated by the Comprehensive Plan as follows: RA-2.5 in rural areas where the predominant lot pattern is below five acres in size for lots established prior to the adoption of the 1994 Comprehensive Plan.
Permitted uses
Include but are not limited to:
Livestock production
Winery & vineyard
Housing-Other
Infrastructure
Police station
Agriculture-Cropland
Property details
Interior
Bathroom Information
# of Full Baths: 1
Heating & Cooling
Heating Fuel Type: Electric
Heating Type: Baseboard Electric
Exterior
Exterior Information
Physical Condition: Average
Building Construction Quality: Fair
Building Type: Single Family
Mobile Home Information
Is Mobile Home
Property Information
Living Sq. Ft: 450
Ground Floor Sq. Ft: 450
Building Sq. Ft: 450
# of Stories: 1
Legal Description: PP ACT 39917711 MOBILE HOME POR OF N 1/2 OF NW 1/4 OF SE 1/4 LY WLY OF ACCESS RD DESC AUD NO 5508070 LESS N 516 FT PLAT BLOCK: PLAT LOT:
Lot Information
# of Buildings: 1
Land Sq. Ft: 43,995
Municipality Name: KING COUNTY
Acres: 1.01
Zoning Code: RA2.5
County Use Description: SINGLE FAMILY(RES USE/ZONE)
Utility Information
Sewer Type: Private
Water Service Type: Private
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 1
Baths: 1.0
Sq. Ft.: 450
Stories: 1.0
Lot Size: 1.01 acres
Style: Mobile/Manufactured Home
Year Built: 1970
Year Renovated: —
County: King County
APN: 102307 9132
Home facts updated by county records on Sep 5, 2026
Around this home
Schools
Clark Elementary School
Public K-5 • Assigned • 6.9mi
9/10
Issaquah Middle School
Public 6-8 • Assigned • 6.6mi
8/10
Issaquah High School
Public 9-12 • Assigned • 6.5mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
2/10 Heat Factor
8 days above 84° expected this year, 18 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
8/10 Air Factor
12 unhealthy days expected this year, 16 days in 30 years
Provided by First Street
Historical weather
Issaquah, WA • 98027
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Sun exposure
Try the sun simulator tool to see how light moves across the property at different times of day and year.