20826 SE May Valley Rd is a 1,920 square foot house on a 4.82 acre lot with 4 bedrooms and 1 bathroom. Based on Redfin's Issaquah data, we estimate the home's value is $909,588.
Single-familyProperty Type
1922Year Built
4.82 acresLot Size
$474Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$909,588
$15K since September
Recently sold homes
Estimate history
This home's estimate is 19.3% lower than the average sale price ($1.13M) 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
$10,235 (+6.8%)
$585,000 + $403,000
$988,000
2025
$9,580 (+4.2%)
$585,000 + $403,000
$988,000
2024
$9,193 (+4.3%)
$516,000 + $416,000
$932,000
2023
$8,815 (+9.8%)
$403,000 + $454,000
$857,000
2022
$8,026 (+4.5%)
$443,000 + $494,000
$937,000
2021
$7,679 (+2.6%)
$331,000 + $368,000
$699,000
2020
$7,483 (+5.6%)
$331,000 + $282,000
$613,000
2019
$7,088 (+8.4%)
$325,000 + $262,000
$587,000
2018
$6,536 (+7.8%)
$325,000 + $262,000
$587,000
2017
$6,064 (+4.9%)
$273,000 + $216,000
$489,000
2016
$5,780 (+15.4%)
$263,000 + $195,000
$458,000
2015
$5,007 (+6.6%)
$245,000 + $181,000
$426,000
2014
$4,698 (+1.1%)
$226,000 + $147,000
$373,000
2013
$4,649 (−3.6%)
$200,000 + $117,000
$317,000
2012
$4,821 (+0.8%)
$197,000 + $114,000
$311,000
2011
$4,784
$198,000 + $144,000
$342,000
2010
$4,788 (−0.9%)
$198,000 + $162,000
$360,000
2009
$4,830
$236,000 + $196,000
$432,000
Tax history for 20826 SE May Valley Rd
Year
Property tax
Land + Additions
Assessment*
2026
$10,235 (+6.8%)
$585,000 + $403,000
$988,000
2025
$9,580 (+4.2%)
$585,000 + $403,000
$988,000
2024
$9,193 (+4.3%)
$516,000 + $416,000
$932,000
2023
$8,815 (+9.8%)
$403,000 + $454,000
$857,000
2022
$8,026 (+4.5%)
$443,000 + $494,000
$937,000
2021
$7,679 (+2.6%)
$331,000 + $368,000
$699,000
2020
$7,483 (+5.6%)
$331,000 + $282,000
$613,000
2019
$7,088 (+8.4%)
$325,000 + $262,000
$587,000
2018
$6,536 (+7.8%)
$325,000 + $262,000
$587,000
2017
$6,064 (+4.9%)
$273,000 + $216,000
$489,000
2016
$5,780 (+15.4%)
$263,000 + $195,000
$458,000
2015
$5,007 (+6.6%)
$245,000 + $181,000
$426,000
2014
$4,698 (+1.1%)
$226,000 + $147,000
$373,000
2013
$4,649 (−3.6%)
$200,000 + $117,000
$317,000
2012
$4,821 (+0.8%)
$197,000 + $114,000
$311,000
2011
$4,784
$198,000 + $144,000
$342,000
2010
$4,788 (−0.9%)
$198,000 + $162,000
$360,000
2009
$4,830
$236,000 + $196,000
$432,000
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning and permits
Zoning
Permits
RA-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-5 in rural areas where the predominant lot pattern is five acres or greater but less than ten acres in size and the area is generally environmentally unconstrained
Permitted uses
Include but are not limited to:
Livestock production
Winery & vineyard
Housing-Other
Infrastructure
Police station
Agriculture-Cropland
Oct 24, 2025 • Final
Residential building - addition-improvement
Perform a below-grade basement alteration to improve exterior egress access, including the construction of a retaining site wall. Add one full bathroom to the single-family home. No changes will be made to the existing use, number of bedrooms, or other interior spaces.
Bathroom
Remodel
Jul 3, 2012 • Final
Building historical
Install a gas forced air heating system.
Gas
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Interior
Basement Information
Basement Sq. Ft: 960
Bathroom Information
# of Full Baths: 1
Heating & Cooling
Heating Fuel Type: Oil
Heating Type: Forced Air
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Exterior
Exterior Information
Physical Condition: Good
Building Construction Quality: Good
Building Type: Single Family
Property Information
Living Sq. Ft: 1,920
Ground Floor Sq. Ft: 960
Building Sq. Ft: 2,880
# of Stories: 2
Legal Description: POR OF SE 1/4 OF NE 1/4 LY W OF E 565 FT THOF & N OF MAY VALLEY RD & SELY OF A STREAM DESC BEG AT NXN OF N MGN SD RD & W LN OF E 1073 FT SD SUBD TH ALG SD STREAM N 06-14-00 W 30.5 FT TH N 22-10-00 E 190 FT TH N 61-24-00 E 325 FT TH N 16-21-00 E 72 FT TH N 49-24-00 E 48.5 FT TH S 55-03-00 E 44.5 FT TH N 62-10-00 E 56 FT TH N 29-39-00 E 64 FT M/L TO W LN OF SD E 565 FT LESS C/M RGTS PLAT BLOCK: PLAT LOT:
Lot Information
# of Buildings: 1
Land Sq. Ft: 209,959
Legal Lot Number: 20826
Municipality Name: KING COUNTY
Acres: 4.82
Zoning Code: RA5
County Use Description: SINGLE FAMILY(RES USE/ZONE)
Utility Information
Sewer Type: Private
Water Service Type: Public
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 4
Baths: 1.0
Sq. Ft.: 1,920
Stories: 2.0
Lot Size: 4.82 acres
Style: Single Family Residential
Year Built: 1922
Year Renovated: —
County: King County
APN: 172306 9079
Home facts updated by county records on Sep 4, 2026
Around this home
Schools
Maple Hills Elementary School
Public K-5 • Assigned • 1.4mi
8/10
Maywood Middle School
Public 6-8 • Assigned • 2.6mi
8/10
Liberty Senior High School
Public 9-12 • Assigned • 2.6mi
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
3/10 Heat Factor
8 days above 87° expected this year, 17 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
7/10 Air Factor
10 unhealthy days expected this year, 13 days in 30 years
Provided by First Street
Historical weather
Issaquah, WA • 98027
Average low and high temperatures (°F)
45
35
46
35
50
39
59
42
65
47
71
52
76
56
77
58
72
54
59
45
50
41
47
39
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 8.8 hours in
June and 1.7 hours in December, placing it below the
U.S. average for solar exposure.
8.8 hrs
1.7 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$865,000 – $1.05M
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