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CondominiumResidential

405 Prospect St

SEATTLE, WA 98109
0.1 ac
Lot SizeThe size of the land the home sits on, from county records.
1930
Year BuiltThe year the home was originally built, according to county records.
Built 19303 floors9 units406–2,580 ft²
$6M
All units combinedThe sum of our current value estimates for every unit in the building — roughly what the whole building's homes are worth together.
$368K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$602
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

-19.2%vs the Seattle ZIP median sale $/ft² ($745)

Sales Performance

$725K
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
—
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
1
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
11.1%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+4.0%per yeartypical hold 8.0 yrsfrom 11 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
20052006201120162018201920232026
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
20052006201120162018201920232026

20 arms-length sales on record for this building.

Unit Mix & Floor PlansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.

Studio
2 units
1 bed
3 units
2 bed
2 units
3 bed
1 unit

Value DistributionHow the building's units spread across value ranges by our current estimates. A wide spread usually means big differences in size, floor or view.

$224K–$410K
6 units
$710K–$710K
1 unit
$794K–$794K
1 unit
$2.5M–$2.5M
1 unit

Value by Floor & LineAverage estimated price per square foot by floor range, using unit numbers to infer floors. Higher floors usually price higher — the gap shows how much the view is worth here.

Floor 1
$590/ft²
Floor 2
$613/ft²
Floor 3
$967/ft²

Ownership & Financing

Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.44%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.11%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.7.3 yrs
Cash purchases (5 yrs)The share of purchases in the last 5 years with no mortgage recorded. High cash share is common in second-home and investor buildings.33%
Avg. loan-to-valueAverage current loan balance against unit value across the building. Low numbers mean owners hold lots of equity — a sign of financial stability.46%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$392,393
Median tax billThe middle annual property tax bill among the building's units.$4,020
Pre-foreclosure noticesUnits with an active pre-foreclosure or foreclosure notice on file.0

Recent SalesThe latest recorded arms-length sales in the building, newest first.

Unit 201Feb 20, 2026$725,000Unit 102Oct 17, 2023$320,000Unit 100BJan 25, 2023$260,000Unit 300Apr 14, 2021$2,450,000Unit 104Jul 24, 2019$470,000Unit 201Mar 1, 2018$712,575Unit 100AJun 24, 2016$294,000Unit 201Sep 21, 2011$299,000Unit 104Mar 6, 2007$335,000Unit 202Feb 21, 2007$753,500

Values are TopHap estimates, not appraisals. Sales, ownership and tax figures come from recorded county documents via ATTOM and can lag by several weeks.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyKING
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2001
Lot (acres)The size of the land the home sits on, from county records.0.10
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
FireplaceWhether the home has a fireplace, and what kind.Yes
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.Elevator

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

E
John Hay Elementary SchoolA-
Elementary · Grades PK–5 · 0.3 mi
M
McClure Middle SchoolA-
Middle · Grades 6–8 · 0.7 mi
H
Lincoln High SchoolA+
High · Grades 9–12 · 2.2 mi

District: Seattle School District

Neighborhood · ZIP 98109These 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.157
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.104
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.366

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.42%
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.1.8%
PopulationHow many people live in this area.38,427
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.15,976 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$121,320
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$161,434
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.37 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.43%

All UnitsEvery property record the county has at this street address, such as the units in a condo building. Prices shown are our estimates, not asking prices.

405 Prospect St # 100a
1 bd · 1 ba · 569 ft²
$323K
405 Prospect St # 100b
1 ba · 406 ft²
$224K
405 Prospect St # 101
1 ba · 468 ft²
$302K
405 Prospect St # 102
1 ba · 517 ft²
$328K
405 Prospect St # 103
1 bd · 1 ba · 651 ft²
$368K
405 Prospect St # 104
1 bd · 1 ba · 713 ft²
$410K
405 Prospect St # 201
2 bd · 2 ba · 1,139 ft²
$710K
405 Prospect St # 202
2 bd · 2 ba · 1,320 ft²
$794K
405 Prospect St # 300
3 bd · 2 ba · 2,580 ft²
$2.5M

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

About 405 Prospect St

How many units are in 405 Prospect St, Seattle, WA?

405 Prospect St, Seattle, WA has 9 residential units across 3 floors, built in 1930, according to county assessor records.

What is a unit at 405 Prospect St, Seattle, WA worth?

The median TopHap Estimate across the 9 units at 405 Prospect St, Seattle, WA is $367,880. That works out to $602 per square foot. Units run from 406 to 2,580 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 405 Prospect St, Seattle, WA expensive for Seattle?

Units at 405 Prospect St, Seattle, WA carry a median of $602 per square foot, 19% below the Seattle median of $745 per square foot.

How often do units sell at 405 Prospect St, Seattle, WA?

1 units at 405 Prospect St, Seattle, WA sold in the last 12 months, out of 20 recorded arms-length sales all time. That is a turnover rate of 11.1% of the building per year. The median sale over that period was $725K.

Have units at 405 Prospect St, Seattle, WA appreciated?

Across 11 repeat sales of the same unit, 405 Prospect St, Seattle, WA returned a median 4.0% per year. Because each pair is the same unit bought and sold, the figure is not distorted by which units traded. The median owner held for 8.0 years.

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