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Single Family ResidenceResidential
$547,907$199 / 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 91How 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 $425,000 on Apr 1, 2004

9405 BAC PL

GAITHERSBURG, MD 20877
4.5
Baths
2,752 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.
0.65 ac
Lot SizeThe size of the land the home sits on, from county records.
1963
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$548K
$501K low$595K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$425,000 · Apr 1, 2004

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,861 (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.$581,800 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$186,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$395,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$531,533
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$581,800

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.76 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.Bi-Level
CountyMONTGOMERY
Lot (acres)The size of the land the home sits on, from county records.0.65
ConstructionThe main material the home's frame and walls are built from.Brick
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Yes
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 800 ft²

Transaction History(1)

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.

E
Whetstone Elementary SchoolC-
Elementary · Grades PK–5 · 0.7 mi
M
Montgomery Village Middle SchoolD-
Middle · Grades 6–8 · 1.1 mi
H
Watkins Mill High SchoolD
High · Grades 9–12 · 1.9 mi

District: Montgomery County Public Schools

Neighborhood · ZIP 20877These 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.124
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.83
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.36

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.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.14%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.38,931
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6,116 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$84,983
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$109,325
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 Bac 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 94% of homes in Montgomery County
  • Bigger than 86% of homes in Gaithersburg 20877
  • Has a bigger lot than 97% of homes in Gaithersburg 20877
  • Older than 88% of homes in Gaithersburg 20877

What homes are worth in Gaithersburg 20877

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

This home
$159K$806K

This home is worth more than 64% of homes in Gaithersburg 20877.

How it measures up in Gaithersburg 20877

The dot is this home. The mark in the middle is the typical home in Gaithersburg 20877.

Estimated value$547,907
CheaperTypical $469,775Pricier

Pricier than 64% of homes nearby

Price per ft²$199
CheaperTypical $259Pricier

Pricier than 15% of homes nearby

Living area2,752 ft²
SmallerTypical 1,703 ft²Bigger

Bigger than 86% of homes nearby

Lot size0.65 ac
SmallerTypical 4,008 ft²Bigger

Bigger than 97% of homes nearby

Year built1963
OlderTypical 1980Newer

Newer than 12% of homes nearby

How 9405 Bac Pl ranks against every home in each area.
MeasureThis homeGaithersburg 20877Montgomery County
Estimated valuepricier than$547,90764% of homes38% of homes
Price per ft²pricier than$19915% of homes6% of homes
Living areabigger than2,752 ft²86% of homes73% of homes
Lot sizebigger than0.65 ac97% of homes92% of homes
Year builtnewer than196312% of homes28% of homes

About 9405 Bac Pl

How much is 9405 Bac Pl, Gaithersburg, MD worth?

The TopHap Estimate for 9405 Bac Pl, Gaithersburg, MD is $547,907 as of Sep 24, 2026. The likely range is $500,702 to $595,112. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 9405 Bac Pl, Gaithersburg, MD last sell?

9405 Bac Pl, Gaithersburg, MD last sold on Apr 1, 2004 for $425,000, according to the county's recorded deed.

How big is 9405 Bac Pl, Gaithersburg, MD?

9405 Bac Pl, Gaithersburg, MD has 4.5 bathrooms, 2,752 square feet of living space and a 0.65-acre lot.

When was 9405 Bac Pl, Gaithersburg, MD built?

9405 Bac Pl, Gaithersburg, MD was built in 1963, making it 63 years old. It is a bi-level home. The building has 2 stories.

What schools serve 9405 Bac Pl, Gaithersburg, MD?

9405 Bac Pl, Gaithersburg, MD is assigned to Whetstone Elementary School (elementary), rated C-; Montgomery Village Middle School (middle), rated D-; Watkins Mill High School (high), rated D. All sit in Montgomery County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 9405 Bac Pl, Gaithersburg, MD compare to other homes in Gaithersburg 20877?

Among the 6,654 homes in Gaithersburg 20877, it is worth more than 64% of them ($547,907 against a typical $469,775), its price per square foot is higher than 15% of them ($199 against a typical $259), it is bigger than 86% of them (2,752 ft² against a typical 1,703 ft²), its lot is bigger than 97% of them (0.65 ac against a typical 4,008 ft²) and it is newer than 12% of them (1963 against a typical 1980). Measured against all of Montgomery County, it is worth more than 38% 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 Bac Pl, Gaithersburg, MD?

The 2025 property tax bill for 9405 Bac Pl, Gaithersburg, MD was $6,861. The county assessed it at $581,800.

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