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TownhouseResidential
$796,906$340 / 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 94How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $317,750 on Mar 3, 2000

13640 MILLS FARM RD

ROCKVILLE, MD 20850
3.5
Baths
2,346 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.
1,982 ft²
Lot SizeThe size of the land the home sits on, from county records.
2000
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

$797K
$749K low$845K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$317,750 · Mar 3, 2000

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,548 (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.$714,400 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$669,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$759,500

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.8 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.Townhouse
StyleThe architectural style of the home, such as ranch or colonial.Townhouse
CountyMONTGOMERY
Lot (acres)The size of the land the home sits on, from county records.0.05
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

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
Stone Mill Elementary SchoolA
Elementary · Grades KG–5 · 1.0 mi
H
Thomas S. Wootton High SchoolA+
High · Grades 9–12 · 2.5 mi
M
Cabin John Middle SchoolA
Middle · Grades 6–8 · 4.6 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%

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

13640 Mills Farm 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 66% of homes in Montgomery County
  • Costs more per square foot than 65% of homes in Montgomery County
  • Has a smaller lot than 78% of homes in Montgomery County
  • Newer than 85% of homes in Montgomery County

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
$181K$1.6M

This home is worth more than 53% 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$796,906
CheaperTypical $768,988Pricier

Pricier than 53% of homes nearby

Price per ft²$340
CheaperTypical $341Pricier

Pricier than 49% of homes nearby

Living area2,346 ft²
SmallerTypical 2,038 ft²Bigger

Bigger than 60% of homes nearby

Lot size1,982 ft²
SmallerTypical 4,138 ft²Bigger

Bigger than 31% of homes nearby

Year built2000
OlderTypical 1990Newer

Newer than 69% of homes nearby

How 13640 Mills Farm Rd ranks against every home in each area.
MeasureThis homeRockville 20850Montgomery County
Estimated valuepricier than$796,90653% of homes66% of homes
Price per ft²pricier than$34049% of homes65% of homes
Living areabigger than2,346 ft²60% of homes61% of homes
Lot sizebigger than1,982 ft²31% of homes22% of homes
Year builtnewer than200069% of homes85% of homes

About 13640 Mills Farm Rd

How much is 13640 Mills Farm Rd, Rockville, MD worth?

The TopHap Estimate for 13640 Mills Farm Rd, Rockville, MD is $796,906 as of Jul 14, 2026. The likely range is $749,109 to $844,703. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 13640 Mills Farm Rd, Rockville, MD last sell?

13640 Mills Farm Rd, Rockville, MD last sold on Mar 3, 2000 for $317,750, according to the county's recorded deed.

How big is 13640 Mills Farm Rd, Rockville, MD?

13640 Mills Farm Rd, Rockville, MD has 3.5 bathrooms, 2,346 square feet of living space and a 0.05-acre lot.

When was 13640 Mills Farm Rd, Rockville, MD built?

13640 Mills Farm Rd, Rockville, MD was built in 2000, making it 26 years old. It is a townhouse home. The building has 2 stories.

What schools serve 13640 Mills Farm Rd, Rockville, MD?

13640 Mills Farm Rd, Rockville, MD is assigned to Stone Mill Elementary School (elementary), rated A; Thomas S. Wootton High School (high), rated A+; Cabin John Middle School (middle), rated A. All sit in Montgomery County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 13640 Mills Farm Rd, Rockville, MD compare to other homes in Rockville 20850?

Among the 14,094 homes in Rockville 20850, it is worth more than 53% of them ($796,906 against a typical $768,988), its price per square foot is higher than 49% of them ($340 against a typical $341), it is bigger than 60% of them (2,346 ft² against a typical 2,038 ft²), its lot is bigger than 31% of them (1,982 ft² against a typical 4,138 ft²) and it is newer than 69% of them (2000 against a typical 1990). Measured against all of Montgomery County, it is worth more than 66% 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 13640 Mills Farm Rd, Rockville, MD?

The 2025 property tax bill for 13640 Mills Farm Rd, Rockville, MD was $7,548. The county assessed it at $714,400.

More homes on Mills Farm Rd

Closest homes

More homes in Rockville 20850

Assigned schools

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