427 Upper Cow Hill Rd is a 1,728 square foot house on a 5.01 acre lot with 2 bedrooms and 2 bathrooms. Based on Redfin's Olga data, we estimate the home's value is $860,661.
Single-familyProperty Type
2002Year Built
5.01 acresLot Size
$498Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$860,661
$6,000 since September
Recently sold homes
Estimate history
This home's estimate is 17.6% lower than the average sale price ($1.04M) of 6 comparable homes.
Claim this home to receive a free report every month with insights on the changing estimate.
Earn from this home
Rent
$2,816/mo
Redfin rental estimate
List your home for rent
Market trends in 98279, WA
Last updated September 2026
Buyer's Market
Seller's Market
Balanced market
Sale-to-List Price
95.6%
3.0% MoM
Median sale price
$928K
$310K MoM
Avg. days on market
39d
3 days MoM
Recently sold homes
5
1 MoM
Provided by Redfin
Sale history for 427 Upper Cow Hill Rd
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2026
$5,803 (+15.1%)
$338,910 + $500,410
$839,320
2025
$5,041 (+26.1%)
$338,910 + $500,410
$839,320
2024
$3,998 (−2.4%)
$268,130 + $585,210
$853,340
2023
$4,098 (−12.6%)
$214,500 + $512,530
$727,030
2022
$4,691 (+13.7%)
$214,500 + $459,940
$674,440
2021
$4,124 (−4.0%)
$195,000 + $429,960
$624,960
2020
$4,294 (+9.9%)
$195,000 + $331,450
$526,450
2019
$3,908 (−5.8%)
$188,480 + $294,150
$482,630
2018
$4,146 (+21.4%)
$252,960 + $263,750
$516,710
2017
$3,416 (+4.9%)
$252,960 + $263,750
$516,710
2016
$3,255 (+8.1%)
$265,600 + $203,060
$468,660
2014
$3,010 (−3.4%)
$229,950 + $199,780
$429,730
2013
$3,117 (−1.1%)
$250,540 + $205,090
$455,630
2012
$3,152 (+9.0%)
$335,670 + $240,390
$576,060
2011
$2,893 (+9.0%)
$335,670 + $240,390
$576,060
2010
$2,654 (−1.7%)
$335,670 + $240,390
$576,060
2009
$2,701
$335,670 + $240,390
$576,060
Tax history for 427 Upper Cow Hill Rd
Year
Property tax
Land + Additions
Assessment*
2026
$5,803 (+15.1%)
$338,910 + $500,410
$839,320
2025
$5,041 (+26.1%)
$338,910 + $500,410
$839,320
2024
$3,998 (−2.4%)
$268,130 + $585,210
$853,340
2023
$4,098 (−12.6%)
$214,500 + $512,530
$727,030
2022
$4,691 (+13.7%)
$214,500 + $459,940
$674,440
2021
$4,124 (−4.0%)
$195,000 + $429,960
$624,960
2020
$4,294 (+9.9%)
$195,000 + $331,450
$526,450
2019
$3,908 (−5.8%)
$188,480 + $294,150
$482,630
2018
$4,146 (+21.4%)
$252,960 + $263,750
$516,710
2017
$3,416 (+4.9%)
$252,960 + $263,750
$516,710
2016
$3,255 (+8.1%)
$265,600 + $203,060
$468,660
2014
$3,010 (−3.4%)
$229,950 + $199,780
$429,730
2013
$3,117 (−1.1%)
$250,540 + $205,090
$455,630
2012
$3,152 (+9.0%)
$335,670 + $240,390
$576,060
2011
$2,893 (+9.0%)
$335,670 + $240,390
$576,060
2010
$2,654 (−1.7%)
$335,670 + $240,390
$576,060
2009
$2,701
$335,670 + $240,390
$576,060
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Jan 24, 2023 • Final
Res - remodel or addition
Work on an accessory structure.
Addition
Remodel
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
Bathroom Information
# of Bathroom Fixtures: 9
Heating & Cooling
Heating Type: Radiant
Exterior
Exterior Information
Physical Condition: Good
Floor Construction Type: Concrete
Foundation Type: Pier
Building Construction Quality: Average
Exterior Wall: Stucco
Roof Covering Type: Metal
Roof Shape Type: Metal
Building Type: Residential
Property Information
Living Sq. Ft: 1,728
Ground Floor Sq. Ft: 1,152
Building Sq. Ft: 1,728
# of Stories: 1.5
Stories Type: 1 1/2
Legal Description: PR NW-SW (MOD PER BLM AFN 2021-1208031) SEC 36, T 37N, R 1W
Lot Information
# of Buildings: 1
Land Sq. Ft: 218,131
Municipality Name: ORCAS
Acres: 5.0076
County Use Description: RESIDENTIAL SINGLE FAMILY UNIT
Location Information
Parcel Location Influence: Good
Utility Information
Sewer Type: Septic
Financial
Assessor Information
Assessment Year: 2025
Tax Area: ORCAS
Public facts
Beds: 2
Baths: 2.0
Sq. Ft.: 1,728
Stories: 1.5
Lot Size: 5.01 acres
Style: Single Family Residential
Year Built: 2002
Year Renovated: —
County: San Juan County
APN: 173632006000
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Orcas Island Elementary School
Public K-5 • Assigned • 7.1mi
7/10
Orcas Island Middle School
Public 6-8 • Assigned • 7.0mi
9/10
Orcas Island High School
Public 9-12 • Assigned • 7.0mi
9/10
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
1/10 Heat Factor
6 days above 78° expected this year, 18 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
5/10 Air Factor
7 unhealthy days expected this year, 8 days in 30 years
Provided by First Street
Historical weather
Olga, WA • 98279
Average low and high temperatures (°F)
45
38
44
37
49
41
57
44
63
49
68
53
71
56
72
58
67
56
55
47
49
43
47
41
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 8 hours in
June and 1.8 hours in December, placing it below the
U.S. average for solar exposure.
8 hrs
1.8 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$818,000 – $990,000
Sell confidently with a local market expert in Olga. 3 minutes to get started.