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Single Family ResidenceResidential
$448,235$200 / 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 Aug 30, 2026
Last sold for $549,500 on Aug 31, 2021

20 E NORTHBAY PL

ALLYN, WA 98524
3
Beds
3
Baths
2,244 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.
0.92 ac
Lot SizeThe size of the land the home sits on, from county records.
1978
Year BuiltThe year the home was originally built, according to county records.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$448K
$424K low$473K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$549,500 · Aug 31, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,645 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$386,360 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$66,850
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$319,510
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$407,990
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$386,360

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.45
41
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
24
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.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.9 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

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
StyleThe architectural style of the home, such as ranch or colonial.Split Level
CountyMASON
Lot (acres)The size of the land the home sits on, from county records.0.92
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Heat Pump
CoolingThe type of cooling or air conditioning in the home.Yes
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.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No
ViewThe type of view from the property, or another feature of the site that affects value.Road
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 700 ft²Patio · 700 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 · 2.7 mi
M
Hawkins Middle SchoolC-
Middle · Grades 6–8 · 2.8 mi
E
Belfair Elementary SchoolC
Elementary · Grades PK–5 · 4.5 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

20 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.

  • Costs less per square foot than 93% of homes in Allyn 98524
  • Bigger than 89% of homes in Mason County
  • Has a bigger lot than 79% of homes in Allyn 98524
  • Older than 74% of homes in Allyn 98524

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 44% 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$448,235
CheaperTypical $468,192Pricier

Pricier than 44% of homes nearby

Price per ft²$200
CheaperTypical $290Pricier

Pricier than 7% of homes nearby

Living area2,244 ft²
SmallerTypical 1,651 ft²Bigger

Bigger than 83% of homes nearby

Lot size0.92 ac
SmallerTypical 0.33 acBigger

Bigger than 79% of homes nearby

Year built1978
OlderTypical 1994Newer

Newer than 26% of homes nearby

How 20 E Northbay Pl ranks against every home in each area.
MeasureThis homeAllyn 98524Mason County
Estimated valuepricier than$448,23544% of homes58% of homes
Price per ft²pricier than$2007% of homes14% of homes
Living areabigger than2,244 ft²83% of homes89% of homes
Lot sizebigger than0.92 ac79% of homes64% of homes
Year builtnewer than197826% of homes36% of homes

About 20 E Northbay Pl

How much is 20 E Northbay Pl, Allyn, WA worth?

The TopHap Estimate for 20 E Northbay Pl, Allyn, WA is $448,235 as of Aug 30, 2026. The likely range is $423,505 to $472,965. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 E Northbay Pl, Allyn, WA last sell?

20 E Northbay Pl, Allyn, WA last sold on Aug 31, 2021 for $549,500, according to the county's recorded deed.

How big is 20 E Northbay Pl, Allyn, WA?

20 E Northbay Pl, Allyn, WA has 3 bedrooms, 3 bathrooms, 2,244 square feet of living space and a 0.92-acre lot.

When was 20 E Northbay Pl, Allyn, WA built?

20 E Northbay Pl, Allyn, WA was built in 1978, making it 48 years old. It is a split level home.

What schools serve 20 E Northbay Pl, Allyn, WA?

20 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 20 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 44% of them ($448,235 against a typical $468,192), its price per square foot is higher than 7% of them ($200 against a typical $290), it is bigger than 83% of them (2,244 ft² against a typical 1,651 ft²), its lot is bigger than 79% of them (0.92 ac against a typical 0.33 ac) and it is newer than 26% of them (1978 against a typical 1994). Measured against all of Mason County, it is worth more than 58% 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 20 E Northbay Pl, Allyn, WA?

The 2026 property tax bill for 20 E Northbay Pl, Allyn, WA was $2,645. The county assessed it at $386,360.

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