Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$655,650$279 / 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 97How 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 $440,000 on Apr 8, 2020

9 TREATY DR

CHESTERBROOK, PA 19087
3
Beds
2.5
Baths
2,354 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.
3,673 ft²
Lot SizeThe size of the land the home sits on, from county records.
1983
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$656K
$633K low$678K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$440,000 · Apr 8, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$668 (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.$170,670 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$37,850
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$132,820
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$170,670
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$170,670

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
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
20
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
70
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
88
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
49
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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
StyleThe architectural style of the home, such as ranch or colonial.Townhouse
CountyCHESTER
Lot (acres)The size of the land the home sits on, from county records.0.08
ConstructionThe main material the home's frame and walls are built from.Brick
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Central
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.Apt/Condo Complex

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.

M
Valley Forge Middle SchoolA+
Middle · Grades 5–8 · 0.8 mi
E
Valley Forge Elementary SchoolA+
Elementary · Grades KG–4 · 1.0 mi
H
Conestoga High SchoolA+
High · Grades 9–12 · 2.1 mi

District: Tredyffrin-Easttown School District

Neighborhood · ZIP 19087These 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.71
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.99
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.81

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.39%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.36,749
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,190 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$151,608
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$195,038
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.47 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

Owner Tools

Do you own this home?
Claim this home

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

9 Treaty Dr 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 67% of homes in Wayne 19087
  • Costs less per square foot than 83% of homes in Wayne 19087
  • Has a smaller lot than 79% of homes in Chester County
  • Newer than 71% of homes in Wayne 19087

What homes are worth in Wayne 19087

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

This home
$243K$2.6M

This home is worth more than 33% of homes in Wayne 19087.

How it measures up in Wayne 19087

The dot is this home. The mark in the middle is the typical home in Wayne 19087.

Estimated value$655,650
CheaperTypical $869,886Pricier

Pricier than 33% of homes nearby

Price per ft²$279
CheaperTypical $355Pricier

Pricier than 17% of homes nearby

Living area2,354 ft²
SmallerTypical 2,362 ft²Bigger

Bigger than 50% of homes nearby

Lot size3,673 ft²
SmallerTypical 0.36 acBigger

Bigger than 27% of homes nearby

Year built1983
OlderTypical 1967Newer

Newer than 71% of homes nearby

How 9 Treaty Dr ranks against every home in each area.
MeasureThis homeWayne 19087Chester County
Estimated valuepricier than$655,65033% of homes62% of homes
Price per ft²pricier than$27917% of homes62% of homes
Living areabigger than2,354 ft²50% of homes56% of homes
Lot sizebigger than3,673 ft²27% of homes21% of homes
Year builtnewer than198371% of homes48% of homes

About 9 Treaty Dr

How much is 9 Treaty Dr, Chesterbrook, PA worth?

The TopHap Estimate for 9 Treaty Dr, Chesterbrook, PA is $655,650 as of Aug 30, 2026. The likely range is $633,278 to $678,022. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 9 Treaty Dr, Chesterbrook, PA last sell?

9 Treaty Dr, Chesterbrook, PA last sold on Apr 8, 2020 for $440,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 9 Treaty Dr, Chesterbrook, PA?

9 Treaty Dr, Chesterbrook, PA has 3 bedrooms, 2.5 bathrooms, 2,354 square feet of living space and a 0.08-acre lot.

When was 9 Treaty Dr, Chesterbrook, PA built?

9 Treaty Dr, Chesterbrook, PA was built in 1983, making it 43 years old. It is a townhouse home. The building has 2 stories.

What schools serve 9 Treaty Dr, Chesterbrook, PA?

9 Treaty Dr, Chesterbrook, PA is assigned to Valley Forge Middle School (middle), rated A+; Valley Forge Elementary School (elementary), rated A+; Conestoga High School (high), rated A+. All sit in Tredyffrin-Easttown School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 9 Treaty Dr, Chesterbrook, PA compare to other homes in Wayne 19087?

Among the 11,447 homes in Wayne 19087, it is worth more than 33% of them ($655,650 against a typical $869,886), its price per square foot is higher than 17% of them ($279 against a typical $355), it is bigger than 50% of them (2,354 ft² against a typical 2,362 ft²), its lot is bigger than 27% of them (3,673 ft² against a typical 0.36 ac) and it is newer than 71% of them (1983 against a typical 1967). Measured against all of Chester County, it is worth more than 62% 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 9 Treaty Dr, Chesterbrook, PA?

The 2026 property tax bill for 9 Treaty Dr, Chesterbrook, PA was $668. The county assessed it at $170,670.

More homes on Treaty Dr

Closest homes

More homes in Chesterbrook 19087

Assigned schools

Explore the area

See this home in context

Open 9 Treaty Dr on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map