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Single Family ResidenceResidential
$1,641,306$211 / 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 95How 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 $1,075,000 on Sep 20, 2018

17517 SIR GALAHAD WAY

ASHTON, MD 20861
7 / 2
Baths
7,781 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.
5.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1992
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.6M
$1.6M low$1.7M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,075,000 · Sep 20, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$17,361 (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.$1,530,500 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$318,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,212,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,430,867
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,530,500

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.24 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.34%
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.0.2 percent flood zone

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
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.Yes
ViewThe type of view from the property, or another feature of the site that affects value.Waterfront
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Tennis courtPatio · 544 ft²Porch · 42 ft²

Transaction History(4)

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.

H
Sherwod High SchoolB-
High · Grades 9–12 · 1.1 mi
E
Sherwood Elementary SchoolA-
Elementary · Grades KG–5 · 1.9 mi
M
William H. Farquhar Middle SchoolB
Middle · Grades 6–8 · 2.6 mi

District: Montgomery County Public Schools

Neighborhood · ZIP 20861These 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.76
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.3%
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.2,094
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.545 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$177,998
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$201,963
Average tempThe average temperature here across a full year.54°F
Annual precipHow much rain and melted snow falls here in a typical year.44 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%

Owner Tools

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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

17517 Sir Galahad Way 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 98% of homes in Ashton 20861
  • Costs less per square foot than 91% of homes in Montgomery County
  • Among the largest homes in Montgomery County
  • Among the largest lots in Montgomery County
  • Newer than 76% of homes in Montgomery County

What homes are worth in Ashton 20861

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

This home
$428K$1.6M

This home is worth more than 98% of homes in Ashton 20861.

How it measures up in Ashton 20861

The dot is this home. The mark in the middle is the typical home in Ashton 20861.

Estimated value$1,641,306
CheaperTypical $946,303Pricier

Pricier than 98% of homes nearby

Price per ft²$211
CheaperTypical $241Pricier

Pricier than 31% of homes nearby

Living area7,781 ft²
SmallerTypical 3,960 ft²Bigger

Bigger than 94% of homes nearby

Lot size5.14 ac
SmallerTypical 0.77 acBigger

Bigger than 95% of homes nearby

Year built1992
OlderTypical 1992Newer

Newer than 51% of homes nearby

How 17517 Sir Galahad Way ranks against every home in each area.
MeasureThis homeAshton 20861Montgomery County
Estimated valuepricier than$1,641,30698% of homes94% of homes
Price per ft²pricier than$21131% of homes9% of homes
Living areabigger than7,781 ft²94% of homesalmost all homes
Lot sizebigger than5.14 ac95% of homesalmost all homes
Year builtnewer than199251% of homes76% of homes

About 17517 Sir Galahad Way

How much is 17517 Sir Galahad Way, Ashton, MD worth?

The TopHap Estimate for 17517 Sir Galahad Way, Ashton, MD is $1,641,306 as of Aug 30, 2026. The likely range is $1,559,478 to $1,723,134. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 17517 Sir Galahad Way, Ashton, MD last sell?

17517 Sir Galahad Way, Ashton, MD last sold on Sep 20, 2018 for $1,075,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 17517 Sir Galahad Way, Ashton, MD?

17517 Sir Galahad Way, Ashton, MD has 7 bathrooms and 7,781 square feet of living space.

When was 17517 Sir Galahad Way, Ashton, MD built?

17517 Sir Galahad Way, Ashton, MD was built in 1992, making it 34 years old. It is a bi-level home. The building has 2 stories.

What schools serve 17517 Sir Galahad Way, Ashton, MD?

17517 Sir Galahad Way, Ashton, MD is assigned to Sherwod High School (high), rated B-; Sherwood Elementary School (elementary), rated A-; William H. Farquhar Middle School (middle), rated B. All sit in Montgomery County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 17517 Sir Galahad Way, Ashton, MD compare to other homes in Ashton 20861?

Among the 1,029 homes in Ashton 20861, it is worth more than 98% of them ($1,641,306 against a typical $946,303), its price per square foot is higher than 31% of them ($211 against a typical $241), it is bigger than 94% of them (7,781 ft² against a typical 3,960 ft²), its lot is bigger than 95% of them (5.14 ac against a typical 0.77 ac) and it is newer than 51% of them (1992 against a typical 1992). Measured against all of Montgomery County, it is worth more than 94% 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 17517 Sir Galahad Way, Ashton, MD?

The 2025 property tax bill for 17517 Sir Galahad Way, Ashton, MD was $17,361. The county assessed it at $1,530,500.

More homes on Sir Galahad Way

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