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CondominiumResidential
$960,326$308 / 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 Sep 24, 2026
Last sold for $875,000 on Nov 5, 2020

9405 BLACKWELL RD

ROCKVILLE, MD 20850
Building report
0
Baths
3,119 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.
1,329 ft²
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.

Valuation

$960K
$927K low$993K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$875,000 · Nov 5, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,661 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$845,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$253,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$591,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$845,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$845,000

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.38
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
6
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
75
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
78
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
34
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.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyMONTGOMERY
Lot (acres)The size of the land the home sits on, from county records.0.03
PoolWhether the property has a pool, and what kind, such as in-ground.No

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
Julius West Middle SchoolA
Middle · Grades 6–8 · 2.1 mi
E
Ritchie Park Elementary SchoolA-
Elementary · Grades KG–5 · 2.7 mi
H
Richard Montgomery High SchoolA-
High · Grades 9–12 · 2.7 mi

District: Montgomery County Public Schools

Neighborhood · ZIP 20850These 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.104
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.89
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.40

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.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.51,693
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,703 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$126,425
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$154,183
Average tempThe average temperature here across a full year.54°F
Annual precipHow much rain and melted snow falls here in a typical year.43 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%

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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

9405 Blackwell Rd 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 more than 81% of homes in Rockville
  • Costs less per square foot than 76% of homes in Rockville
  • Bigger than 88% of homes in Rockville
  • Has a smaller lot than 90% of homes in Montgomery County
  • Newer than 91% of homes in Rockville

What homes are worth in Rockville 20850

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

This home
$182K$1.7M

This home is worth more than 75% of homes in Rockville 20850.

How it measures up in Rockville 20850

The dot is this home. The mark in the middle is the typical home in Rockville 20850.

Estimated value$960,326
CheaperTypical $754,033Pricier

Pricier than 75% of homes nearby

Price per ft²$308
CheaperTypical $340Pricier

Pricier than 29% of homes nearby

Living area3,119 ft²
SmallerTypical 2,038 ft²Bigger

Bigger than 80% of homes nearby

Lot size1,329 ft²
SmallerTypical 4,138 ft²Bigger

Bigger than 16% of homes nearby

Year built2004
OlderTypical 1991Newer

Newer than 89% of homes nearby

How 9405 Blackwell Rd ranks against every home in each area.
MeasureThis homeRockvilleRockville 20850Montgomery County
Estimated valuepricier than$960,32681% of homes75% of homes77% of homes
Price per ft²pricier than$30824% of homes29% of homes52% of homes
Living areabigger than3,119 ft²88% of homes80% of homes79% of homes
Lot sizebigger than1,329 ft²13% of homes16% of homes10% of homes
Year builtnewer than200491% of homes89% of homes89% of homes

About 9405 Blackwell Rd

How much is 9405 Blackwell Rd, Rockville, MD worth?

The TopHap Estimate for 9405 Blackwell Rd, Rockville, MD is $960,326 as of Sep 24, 2026. The likely range is $927,454 to $993,198. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 9405 Blackwell Rd, Rockville, MD last sell?

9405 Blackwell Rd, Rockville, MD last sold on Nov 5, 2020 for $875,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 9405 Blackwell Rd, Rockville, MD?

9405 Blackwell Rd, Rockville, MD has 3,119 square feet of living space and a 0.03-acre lot.

When was 9405 Blackwell Rd, Rockville, MD built?

9405 Blackwell Rd, Rockville, MD was built in 2004, making it 22 years old. It is a condo/apartment home.

What schools serve 9405 Blackwell Rd, Rockville, MD?

9405 Blackwell Rd, Rockville, MD is assigned to Julius West Middle School (middle), rated A; Ritchie Park Elementary School (elementary), rated A-; Richard Montgomery High School (high), rated A-. All sit in Montgomery County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 9405 Blackwell Rd, Rockville, MD compare to other homes in Rockville 20850?

Among the 14,094 homes in Rockville 20850, it is worth more than 75% of them ($960,326 against a typical $754,033), its price per square foot is higher than 29% of them ($308 against a typical $340), it is bigger than 80% of them (3,119 ft² against a typical 2,038 ft²), its lot is bigger than 16% of them (1,329 ft² against a typical 4,138 ft²) and it is newer than 89% of them (2004 against a typical 1991). Measured against all of Montgomery County, it is worth more than 77% 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 9405 Blackwell Rd, Rockville, MD?

The 2025 property tax bill for 9405 Blackwell Rd, Rockville, MD was $10,661. The county assessed it at $845,000.

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