4403 Mud Bay Rd is a 780 square foot house on a 4.65 acre lot with 1 bedroom. Based on Redfin's Lopez Island data, we estimate the home's value is $645,314.
Single-familyProperty Type
1979Year Built
4.65 acresLot Size
$827Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$645,314
$4,000 since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 49.3% lower than the average sale price ($1.27M) 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
$3,246 (+11.6%)
$302,030 + $177,530
$479,560
2025
$2,909 (+10.9%)
$302,030 + $177,530
$479,560
2024
$2,623 (+31.3%)
$287,650 + $161,470
$449,120
2023
$1,997 (+0.7%)
$258,890 + $163,310
$422,200
2022
$1,984 (+9.6%)
$146,840 + $146,340
$293,180
2021
$1,810 (+2.2%)
$122,370 + $113,360
$235,730
2020
$1,770 (+31.7%)
$122,370 + $100,610
$222,980
2019
$1,344 (−0.7%)
$122,370 + $41,200
$163,570
2018
$1,354 (+22.2%)
$122,370 + $33,880
$156,250
2017
$1,108 (+2.4%)
$122,370 + $33,880
$156,250
2016
$1,082 (+11.5%)
$128,490 + $22,200
$150,690
2014
$970 (−1.1%)
$116,810 + $22,300
$139,110
2013
$981 (+2.3%)
$116,810 + $28,980
$145,790
2012
$959 (−4.8%)
$133,000 + $32,780
$165,780
2011
$1,007 (+8.4%)
$160,650 + $16,890
$177,540
2010
$929 (+2.6%)
$160,650 + $16,890
$177,540
2009
$906
$160,650 + $16,890
$177,540
Tax history for 4403 Mud Bay Rd
Year
Property tax
Land + Additions
Assessment*
2026
$3,246 (+11.6%)
$302,030 + $177,530
$479,560
2025
$2,909 (+10.9%)
$302,030 + $177,530
$479,560
2024
$2,623 (+31.3%)
$287,650 + $161,470
$449,120
2023
$1,997 (+0.7%)
$258,890 + $163,310
$422,200
2022
$1,984 (+9.6%)
$146,840 + $146,340
$293,180
2021
$1,810 (+2.2%)
$122,370 + $113,360
$235,730
2020
$1,770 (+31.7%)
$122,370 + $100,610
$222,980
2019
$1,344 (−0.7%)
$122,370 + $41,200
$163,570
2018
$1,354 (+22.2%)
$122,370 + $33,880
$156,250
2017
$1,108 (+2.4%)
$122,370 + $33,880
$156,250
2016
$1,082 (+11.5%)
$128,490 + $22,200
$150,690
2014
$970 (−1.1%)
$116,810 + $22,300
$139,110
2013
$981 (+2.3%)
$116,810 + $28,980
$145,790
2012
$959 (−4.8%)
$133,000 + $32,780
$165,780
2011
$1,007 (+8.4%)
$160,650 + $16,890
$177,540
2010
$929 (+2.6%)
$160,650 + $16,890
$177,540
2009
$906
$160,650 + $16,890
$177,540
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Sep 8, 2017 • Final
Accessory structure - residential
ADU
Jun 26, 2017 • Final
Public works
Grading
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: 1
Heating & Cooling
Heating Type: Baseboard Electric
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Exterior
Exterior Information
Physical Condition: Very Good
Floor Construction Type: Dirt
Foundation Type: Block
Building Construction Quality: Low
Exterior Wall: Plywood
Roof Covering Type: Metal
Roof Shape Type: Metal
Building Type: Residential
View Information
View: Obstructed
Property Information
Subdivision Name: PAVEYS SALT-WATER-FRONT TR
Living Sq. Ft: 780
Ground Floor Sq. Ft: 468
Building Sq. Ft: 780
# of Stories: 1.5
Stories Type: 1 1/2
Legal Description: SUPP PLAT OF PAVEY'S ETC - TRACT 54 SEC 17, T 34N, R 1W
Parking & Garage Information
Parking Type: Unfinished Detached Garage
Garage/Parking Sq. Ft: 1,121
Garage / Carport Type: Unfinished Detached
Lot Information
# of Buildings: 1
Land Sq. Ft: 202,685
Legal Lot Number: 54
Municipality Name: LOPEZ
Acres: 4.653
County Use Description: RESIDENTIAL SINGLE FAMILY UNIT
Utility Information
Sewer Type: Septic
Financial
Assessor Information
Assessment Year: 2025
Tax Area: LOPEZ
Public facts
Beds: 1
Baths: —
Sq. Ft.: 780
Stories: 1.5
Lot Size: 4.65 acres
Style: Single Family Residential
Year Built: 1979
Year Renovated: —
County: San Juan County
APN: 141750054000
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Lopez Elementary School
Public K-6 • Assigned • 4.5mi
6/10
Lopez Middle High School
Public 7-12 • Assigned • 4.5mi
6/10
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
7 days above 76° expected this year, 20 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
6/10 Air Factor
8 unhealthy days expected this year, 9 days in 30 years
Provided by First Street
Historical weather
Lopez Island, WA • 98261
Average low and high temperatures (°F)
47
39
46
39
51
42
58
45
63
49
67
52
69
53
72
56
66
54
57
48
51
44
49
42
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 8.2 hours in
June and 1.8 hours in December, placing it below the
U.S. average for solar exposure.