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Single Family ResidenceResidential
$335,682$257 / 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 90How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $340,000 on Apr 9, 2020

21 E NORTHBAY PL

ALLYN, WA 98524
3
Beds
2
Baths
1,304 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.
0.26 ac
Lot SizeThe size of the land the home sits on, from county records.
2004
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$336K
$304K low$368K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$340,000 · Apr 9, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,810 (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.$366,660 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$78,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$287,760
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$366,660
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$366,660

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.37
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
23
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
40
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
99
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
23
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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
CountyMason
Lot (acres)The size of the land the home sits on, from county records.0.26
ConstructionThe main material the home's frame and walls are built from.Steel Frame
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 228 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.

H
North Mason High SchoolC-
High · Grades 9–12 · 2.6 mi
M
Hawkins Middle SchoolC-
Middle · Grades 6–8 · 2.7 mi
E
Belfair Elementary SchoolC
Elementary · Grades PK–5 · 4.4 mi

District: North Mason School District

Neighborhood · ZIP 98524These 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.151
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.255

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.85%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.13%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.3,309
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.204 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$114,510
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$120,714
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.54 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.33%

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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

21 E Northbay Pl 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 less than 87% of homes in Allyn 98524
  • Costs less per square foot than 69% of homes in Allyn 98524
  • Smaller than 77% of homes in Allyn 98524
  • Has a smaller lot than 75% of homes in Allyn 98524
  • Newer than 79% of homes in Mason County

What homes are worth in Allyn 98524

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

This home
$218K$1.3M

This home is worth more than 13% of homes in Allyn 98524.

How it measures up in Allyn 98524

The dot is this home. The mark in the middle is the typical home in Allyn 98524.

Estimated value$335,682
CheaperTypical $468,192Pricier

Pricier than 13% of homes nearby

Price per ft²$257
CheaperTypical $290Pricier

Pricier than 31% of homes nearby

Living area1,304 ft²
SmallerTypical 1,651 ft²Bigger

Bigger than 23% of homes nearby

Lot size0.26 ac
SmallerTypical 0.33 acBigger

Bigger than 25% of homes nearby

Year built2004
OlderTypical 1994Newer

Newer than 73% of homes nearby

How 21 E Northbay Pl ranks against every home in each area.
MeasureThis homeAllyn 98524Mason County
Estimated valuepricier than$335,68213% of homes35% of homes
Price per ft²pricier than$25731% of homes39% of homes
Living areabigger than1,304 ft²23% of homes43% of homes
Lot sizebigger than0.26 ac25% of homes30% of homes
Year builtnewer than200473% of homes79% of homes

About 21 E Northbay Pl

How much is 21 E Northbay Pl, Allyn, WA worth?

The TopHap Estimate for 21 E Northbay Pl, Allyn, WA is $335,682 as of Aug 30, 2026. The likely range is $303,666 to $367,698. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 E Northbay Pl, Allyn, WA last sell?

21 E Northbay Pl, Allyn, WA last sold on Apr 9, 2020 for $340,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 21 E Northbay Pl, Allyn, WA?

21 E Northbay Pl, Allyn, WA has 3 bedrooms, 2 bathrooms, 1,304 square feet of living space and a 0.26-acre lot.

When was 21 E Northbay Pl, Allyn, WA built?

21 E Northbay Pl, Allyn, WA was built in 2004, making it 22 years old. The building has 1 story.

What schools serve 21 E Northbay Pl, Allyn, WA?

21 E Northbay Pl, Allyn, WA is assigned to North Mason High School (high), rated C-; Hawkins Middle School (middle), rated C-; Belfair Elementary School (elementary), rated C. All sit in North Mason School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 E Northbay Pl, Allyn, WA compare to other homes in Allyn 98524?

Among the 1,923 homes in Allyn 98524, it is worth more than 13% of them ($335,682 against a typical $468,192), its price per square foot is higher than 31% of them ($257 against a typical $290), it is bigger than 23% of them (1,304 ft² against a typical 1,651 ft²), its lot is bigger than 25% of them (0.26 ac against a typical 0.33 ac) and it is newer than 73% of them (2004 against a typical 1994). Measured against all of Mason County, it is worth more than 35% 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 21 E Northbay Pl, Allyn, WA?

The 2024 property tax bill for 21 E Northbay Pl, Allyn, WA was $2,810. The county assessed it at $366,660.

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