4521 Rock Rd is a 2,163 square foot house on a 41.9 acre lot with 3 bedrooms and 1.5 bathrooms.
Single-familyProperty Type
1948Year Built
41.9 acresLot Size
Source:Public Records
Redfin Estimate
Unfortunately, we don't have enough data to generate an accurate Estimate at this time.
Earn from this home
Rent
$2,633/mo
Redfin rental estimate
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Market trends in 98295, WA
Last updated August 2026
Buyer's Market
Seller's Market
Seller's market
Sale-to-List Price
97.8%
0.5% MoM
Median sale price
$484K
$73K MoM
Avg. days on market
23d
4 days MoM
Recently sold homes
6
1 MoM
Provided by Redfin
Sale history for 4521 Rock Rd
Date
Event
Price
Public Records
Jul 28, 2011
Sold
$13,934,000
$6,442/sq ft
Public Records
Mar 30, 2007
Sold
$3,049,989
$1,410/sq ft
Year
Property tax
Land + Additions
Assessment*
2026
$51,610
$128,164 + $5,391,449
$5,519,613
2025
$51,567 (+0.6%)
$128,164 + $5,391,449
$5,519,613
2024
$51,265 (+151.0%)
$111,997 + $5,594,421
$5,706,418
2023
$20,423 (−21.5%)
$111,997 + $5,594,421
$5,706,418
2022
$26,031 (−6.3%)
$81,109 + $2,087,643
$2,168,752
2021
$27,775 (+3.8%)
$79,370 + $2,362,377
$2,441,747
2020
$26,746 (+16.0%)
$79,167 + $2,147,558
$2,226,725
2019
$23,056 (−17.5%)
$82,201 + $2,087,643
$2,169,844
2017
$27,935 (+141.2%)
$83,663 + $2,083,672
$2,167,335
2016
$11,582 (+18.7%)
$84,498 + $1,968,859
$2,053,357
2015
$9,759 (+133.1%)
$81,648 + $715,253
$796,901
2014
$4,186 (−1.3%)
$75,962 + $271,235
$347,197
2013
$4,242 (−1.8%)
$75,962 + $271,235
$347,197
2011
$4,319
$61,384 + $291,530
$352,914
Tax history for 4521 Rock Rd
Year
Property tax
Land + Additions
Assessment*
2026
$51,610
$128,164 + $5,391,449
$5,519,613
2025
$51,567 (+0.6%)
$128,164 + $5,391,449
$5,519,613
2024
$51,265 (+151.0%)
$111,997 + $5,594,421
$5,706,418
2023
$20,423 (−21.5%)
$111,997 + $5,594,421
$5,706,418
2022
$26,031 (−6.3%)
$81,109 + $2,087,643
$2,168,752
2021
$27,775 (+3.8%)
$79,370 + $2,362,377
$2,441,747
2020
$26,746 (+16.0%)
$79,167 + $2,147,558
$2,226,725
2019
$23,056 (−17.5%)
$82,201 + $2,087,643
$2,169,844
2017
$27,935 (+141.2%)
$83,663 + $2,083,672
$2,167,335
2016
$11,582 (+18.7%)
$84,498 + $1,968,859
$2,053,357
2015
$9,759 (+133.1%)
$81,648 + $715,253
$796,901
2014
$4,186 (−1.3%)
$75,962 + $271,235
$347,197
2013
$4,242 (−1.8%)
$75,962 + $271,235
$347,197
2011
$4,319
$61,384 + $291,530
$352,914
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
AG
Agricultural District
The primary purposes of this district are to implement the agricultural designation of the Comprehensive Plan, established pursuant to RCW 36.70A.170, preserve, enhance and support the production of food and fiber in Whatcom County, to maintain a sufficiently large agricultural land base to ensure a viable agriculture industry and to maintain the economic feasibility of supporting services. Whatcom County supports agricultural activities as the highest priority use in the Agriculture District, with all other uses being subordinate to agricultural activities. Whatcom County seeks to minimize conflict with surrounding zoning districts, in conjunction with Chapter 14.02 WCC, Right to Farm. In order to limit the further fragmentation of the commercial agricultural land base, the Agriculture District includes smaller areas of land with poorer quality soils or nonagricultural uses, which do not meet the definition of agriculture lands of long-term commercial significance.; A secondary purpose of this district is to serve as a holding district when located within the urban growth area Comprehensive Plan designation to allow agricultural uses in the near term while protecting the area from suburban sprawl and preserving the potential for future urban development consistent with the protection of the resource land.
Permitted uses
Include but are not limited to:
Dairy
Livestock production
Housing-Single unit
Housing-Senior
Housing-Student
Agriculture-Cropland
Property details
Interior
Bathroom Information
# of Full Baths: 1
# of 1/2 Baths: 1
Heating & Cooling
Heating Type: Heat Pump
Exterior
Exterior Information
Physical Condition: Average
Foundation Type: Concrete
Exterior Wall: Stucco
Building Type: Residential
Property Information
Living Sq. Ft: 2,163
Ground Floor Sq. Ft: 2,163
Building Sq. Ft: 2,163
# of Stories: 1
Stories Type: 1
Legal Description: BEG AT NW COR OF GOVT LOT 3-TH E ALG N LI OF GOVT LOT 3 158.5 FT-TH S 1362 FT TO S LI OF GOVT LOT 3-TH W 158.5 FT TO SW COR OF GOVT LOT 3-TH N ALG W LI OF GOVT LOT 3 1365 FT TO BEG-GOVT LOT 4-LESS RD-SUBJ TO PIPELINE ESMT REC AF 770154
Parking & Garage Information
Parking Type: Detached Garage
Garage/Parking Sq. Ft: 880
Garage / Carport Type: Detached
Lot Information
# of Buildings: 3
Land Sq. Ft: 1,825,164
Legal Lot Number: 3
Municipality Name: 506 F14 EMS14
Acres: 41.9
Zoning Code: AG
County Use Description: OSAG DAIRY PRODUCTS
Financial
Assessor Information
Assessment Year: 2025
Tax District County: 506 F14 EMS14
Public facts
Beds: 3
Baths: 1.5
Sq. Ft.: 2,163
Stories: 1.0
Lot Size: 41.9 acres
Style: Single Family Residential
Year Built: 1948
Year Renovated: 1986
County: Whatcom County
APN: 4004010874920000
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Sumas Elementary School
Public PreK-5 • Assigned • 0.8mi
6/10
Nooksack Valley High School
Public 7-12 • Assigned • 3.6mi
6/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
10/10 Flood Factor
Estimated 80%+ chance 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
7 days above 87° expected this year, 15 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
7/10 Air Factor
12 unhealthy days expected this year, 14 days in 30 years
Provided by First Street
Historical weather
Sumas, WA • 98295
Average low and high temperatures (°F)
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58
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41
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38
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Sun exposure
In this area, properties receive around 7 hours in
June and 1.6 hours in December, placing it below the
U.S. average for solar exposure.
7 hrs
1.6 hrs
JuneDecember
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