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Single Family ResidenceResidential
$659,000$399 / 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 95How 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
Last sold for $408,000 on Nov 15, 2022

28915 229TH PL SE

BLACK DIAMOND, WA 98010
4
Beds
1.8
Baths
1,650 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.
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.
1976
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$659K
$625K low$693K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$408,000 · Nov 15, 2022

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,496 (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.$541,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$269,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$272,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$549,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$541,000

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyKING
Lot (acres)The size of the land the home sits on, from county records.0.24
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 100 ft²Porch · 50 ft²

Transaction History(3)

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
Tahoma Senior High SchoolA+
High · Grades 9–12 · 1.1 mi
E
Rock Creek Elementary SchoolA-
Elementary · Grades KG–5 · 2.1 mi
M
Summit Trail Middle SchoolA+
Middle · Grades 6–8 · 2.7 mi

District: Tahoma School District

Neighborhood · ZIP 98010These 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.116
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.237

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.7%
PopulationHow many people live in this area.6,853
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.363 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$136,748
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$169,893
Average tempThe average temperature here across a full year.50°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.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

28915 229th Pl Se 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 69% of homes in King County
  • Costs less per square foot than 72% of homes in King County
  • Smaller than 74% of homes in Black Diamond 98010
  • Older than 81% of homes in Black Diamond 98010

What homes are worth in Black Diamond 98010

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

This home
$409K$1.8M

This home is worth more than 33% of homes in Black Diamond 98010.

How it measures up in Black Diamond 98010

The dot is this home. The mark in the middle is the typical home in Black Diamond 98010.

Estimated value$659,000
CheaperTypical $765,564Pricier

Pricier than 33% of homes nearby

Price per ft²$399
CheaperTypical $361Pricier

Pricier than 64% of homes nearby

Living area1,650 ft²
SmallerTypical 2,270 ft²Bigger

Bigger than 26% of homes nearby

Lot size0.24 ac
SmallerTypical 0.17 acBigger

Bigger than 64% of homes nearby

Year built1976
OlderTypical 2009Newer

Newer than 19% of homes nearby

How 28915 229th Pl Se ranks against every home in each area.
MeasureThis homeBlack Diamond 98010King County
Estimated valuepricier than$659,00033% of homes31% of homes
Price per ft²pricier than$39964% of homes28% of homes
Living areabigger than1,650 ft²26% of homes41% of homes
Lot sizebigger than0.24 ac64% of homes61% of homes
Year builtnewer than197619% of homes46% of homes

About 28915 229th Pl Se

How much is 28915 229th Pl Se, Black Diamond, WA worth?

The TopHap Estimate for 28915 229th Pl Se, Black Diamond, WA is $659,000 as of Sep 24, 2026. The likely range is $624,908 to $693,092. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 28915 229th Pl Se, Black Diamond, WA last sell?

28915 229th Pl Se, Black Diamond, WA last sold on Nov 15, 2022 for $408,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 28915 229th Pl Se, Black Diamond, WA?

28915 229th Pl Se, Black Diamond, WA has 4 bedrooms, 1.8 bathrooms, 1,650 square feet of living space and a 0.24-acre lot.

When was 28915 229th Pl Se, Black Diamond, WA built?

28915 229th Pl Se, Black Diamond, WA was built in 1976, making it 50 years old. The building has 2 stories.

What schools serve 28915 229th Pl Se, Black Diamond, WA?

28915 229th Pl Se, Black Diamond, WA is assigned to Tahoma Senior High School (high), rated A+; Rock Creek Elementary School (elementary), rated A-; Summit Trail Middle School (middle), rated A+. All sit in Tahoma School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 28915 229th Pl Se, Black Diamond, WA compare to other homes in Black Diamond 98010?

Among the 3,590 homes in Black Diamond 98010, it is worth more than 33% of them ($659,000 against a typical $765,564), its price per square foot is higher than 64% of them ($399 against a typical $361), it is bigger than 26% of them (1,650 ft² against a typical 2,270 ft²), its lot is bigger than 64% of them (0.24 ac against a typical 0.17 ac) and it is newer than 19% of them (1976 against a typical 2009). Measured against all of King County, it is worth more than 31% 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 28915 229th Pl Se, Black Diamond, WA?

The 2026 property tax bill for 28915 229th Pl Se, Black Diamond, WA was $5,496. The county assessed it at $541,000.

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