Skip to content
Skip to content
TopHapOpen in map
TownhouseResidential
$761,926$294 / 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 96How 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 $541,000 on Jul 26, 2013

623 HIGHLAND RIDGE AVE

GAITHERSBURG, MD 20878
3.5
Baths
2,588 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.
3,928 ft²
Lot SizeThe size of the land the home sits on, from county records.
1998
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

$762K
$728K low$796K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$541,000 · Jul 26, 2013

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,175 (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.$686,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$249,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$436,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$656,467
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$686,700

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.0.09
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
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 · 200 ft²

Transaction History(5)

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
Lakelands Park Middle SchoolB-
Middle · Grades 6–8 · 0.7 mi
E
Diamond Elementary SchoolA
Elementary · Grades KG–5 · 1.1 mi
H
Northwest High SchoolB+
High · Grades 9–12 · 3.5 mi

District: Montgomery County Public Schools

Neighborhood · ZIP 20878These 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.62
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 100.42

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.9%
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.66,167
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,976 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$145,457
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$176,656
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%

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

623 Highland Ridge Ave 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 79% of homes in Gaithersburg
  • Bigger than 78% of homes in Gaithersburg
  • Has a bigger lot than 68% of homes in Gaithersburg
  • Newer than 83% of homes in Montgomery County

What homes are worth in Gaithersburg 20878

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

This home
$172K$1.6M

This home is worth more than 54% of homes in Gaithersburg 20878.

How it measures up in Gaithersburg 20878

The dot is this home. The mark in the middle is the typical home in Gaithersburg 20878.

Estimated value$761,926
CheaperTypical $733,777Pricier

Pricier than 54% of homes nearby

Price per ft²$294
CheaperTypical $306Pricier

Pricier than 42% of homes nearby

Living area2,588 ft²
SmallerTypical 2,254 ft²Bigger

Bigger than 62% of homes nearby

Lot size3,928 ft²
SmallerTypical 0.11 acBigger

Bigger than 47% of homes nearby

Year built1998
OlderTypical 1988Newer

Newer than 75% of homes nearby

How 623 Highland Ridge Ave ranks against every home in each area.
MeasureThis homeGaithersburgGaithersburg 20878Montgomery County
Estimated valuepricier than$761,92679% of homes54% of homes64% of homes
Price per ft²pricier than$29455% of homes42% of homes46% of homes
Living areabigger than2,588 ft²78% of homes62% of homes69% of homes
Lot sizebigger than3,928 ft²68% of homes47% of homes36% of homes
Year builtnewer than199871% of homes75% of homes83% of homes

About 623 Highland Ridge Ave

How much is 623 Highland Ridge Ave, Gaithersburg, MD worth?

The TopHap Estimate for 623 Highland Ridge Ave, Gaithersburg, MD is $761,926 as of Aug 30, 2026. The likely range is $728,127 to $795,725. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 623 Highland Ridge Ave, Gaithersburg, MD last sell?

623 Highland Ridge Ave, Gaithersburg, MD last sold on Jul 26, 2013 for $541,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 623 Highland Ridge Ave, Gaithersburg, MD?

623 Highland Ridge Ave, Gaithersburg, MD has 3.5 bathrooms, 2,588 square feet of living space and a 0.09-acre lot.

When was 623 Highland Ridge Ave, Gaithersburg, MD built?

623 Highland Ridge Ave, Gaithersburg, MD was built in 1998, making it 28 years old. It is a townhouse home. The building has 2 stories.

What schools serve 623 Highland Ridge Ave, Gaithersburg, MD?

623 Highland Ridge Ave, Gaithersburg, MD is assigned to Lakelands Park Middle School (middle), rated B-; Diamond Elementary School (elementary), rated A; Northwest High School (high), rated B+. All sit in Montgomery County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 623 Highland Ridge Ave, Gaithersburg, MD compare to other homes in Gaithersburg 20878?

Among the 20,757 homes in Gaithersburg 20878, it is worth more than 54% of them ($761,926 against a typical $733,777), its price per square foot is higher than 42% of them ($294 against a typical $306), it is bigger than 62% of them (2,588 ft² against a typical 2,254 ft²), its lot is bigger than 47% of them (3,928 ft² against a typical 0.11 ac) and it is newer than 75% of them (1998 against a typical 1988). Measured against all of Montgomery County, it is worth more than 64% 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 623 Highland Ridge Ave, Gaithersburg, MD?

The 2025 property tax bill for 623 Highland Ridge Ave, Gaithersburg, MD was $8,175. The county assessed it at $686,700.

More homes on Highland Ridge Ave

Closest homes

More homes in Gaithersburg 20878

Assigned schools

Explore the area

See this home in context

Open 623 Highland Ridge Ave 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