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Single Family ResidenceResidential
$606,031$372 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 94How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026

4721 ROCK RD

SUMAS, WA 98295
1
Beds
1
Baths
1,630 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
128.03 ac
Lot SizeThe size of the land the home sits on, from county records.
1939
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$606K
$572K low$640K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,558 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$563,884 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$319,436
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$244,448
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,508,957

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.50
81
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
21
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
43
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
98
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
10
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.28 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyWhatcom
Lot (acres)The size of the land the home sits on, from county records.128.03
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Concrete
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Forced Air
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Carport (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 130 ft²

Transaction History(4)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Sumas Elementary SchoolB-
Elementary · Grades KG–5 · 1.3 mi
H
Nooksack Valley High SchoolB
High · Grades 9–12 · 3.7 mi
M
Nooksack Valley Middle SchoolB
Middle · Grades 6–8 · 6.3 mi

District: Nooksack Valley School District

Neighborhood · ZIP 98295These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.83
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.100
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.184

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.12%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.3,263
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.112 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$80,325
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$94,352
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.70 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.43%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

4721 Rock Rd measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth more than 89% of homes in Sumas 98295
  • Costs more per square foot than 89% of homes in Sumas 98295
  • Bigger than 67% of homes in Sumas 98295
  • Among the largest lots in Sumas 98295
  • Older than 87% of homes in Whatcom County

What homes are worth in Sumas 98295

Each bar is how many homes fall in that price range. The marker is this home.

This home
$20K$761K

This home is worth more than 89% of homes in Sumas 98295.

How it measures up in Sumas 98295

The dot is this home. The mark in the middle is the typical home in Sumas 98295.

Estimated value$606,031
CheaperTypical $375,000Pricier

Pricier than 89% of homes nearby

Price per ft²$372
CheaperTypical $258Pricier

Pricier than 89% of homes nearby

Living area1,630 ft²
SmallerTypical 1,344 ft²Bigger

Bigger than 67% of homes nearby

Lot size128.03 ac
SmallerTypical 0.25 acBigger

Bigger than almost all homes nearby

Year built1939
OlderTypical 1993Newer

Newer than 18% of homes nearby

How 4721 Rock Rd ranks against every home in each area.
MeasureThis homeSumas 98295Whatcom County
Estimated valuepricier than$606,03189% of homes51% of homes
Price per ft²pricier than$37289% of homes42% of homes
Living areabigger than1,630 ft²67% of homes58% of homes
Lot sizebigger than128.03 acalmost all homesalmost all homes
Year builtnewer than193918% of homes13% of homes

About 4721 Rock Rd

How much is 4721 Rock Rd, Sumas, WA worth?

The TopHap Estimate for 4721 Rock Rd, Sumas, WA is $606,031 as of Sep 24, 2026. The likely range is $572,283 to $639,779. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4721 Rock Rd, Sumas, WA last sell?

4721 Rock Rd, Sumas, WA last sold on Feb 10, 2021, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 4721 Rock Rd, Sumas, WA?

4721 Rock Rd, Sumas, WA has 1 bedrooms, 1 bathrooms, 1,630 square feet of living space and a 128.03-acre lot.

When was 4721 Rock Rd, Sumas, WA built?

4721 Rock Rd, Sumas, WA was built in 1939, making it 87 years old. The building has 1 story.

What schools serve 4721 Rock Rd, Sumas, WA?

4721 Rock Rd, Sumas, WA is assigned to Sumas Elementary School (elementary), rated B-; Nooksack Valley High School (high), rated B; Nooksack Valley Middle School (middle), rated B. All sit in Nooksack Valley School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4721 Rock Rd, Sumas, WA compare to other homes in Sumas 98295?

Among the 1,162 homes in Sumas 98295, it is worth more than 89% of them ($606,031 against a typical $375,000), its price per square foot is higher than 89% of them ($372 against a typical $258), it is bigger than 67% of them (1,630 ft² against a typical 1,344 ft²), its lot is bigger than almost all of them (128.03 ac against a typical 0.25 ac) and it is newer than 18% of them (1939 against a typical 1993). Measured against all of Whatcom County, it is worth more than 51% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 4721 Rock Rd, Sumas, WA?

The 2024 property tax bill for 4721 Rock Rd, Sumas, WA was $4,558. The county assessed it at $563,884.

More homes on Rock Rd

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