Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$348,448$292 / 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 Sep 24, 2026
Last sold for $136,750 on May 12, 1999

3 MAINSAIL CT

BALTIMORE, MD 21220
2
Baths
1,192 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1999
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$348K
$326K low$371K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$136,750 · May 12, 1999

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,022 (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.$280,533 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$259,167
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$301,900

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.Split Foyer
CountyBaltimore
Lot (acres)The size of the land the home sits on, from county records.0.14
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Forced Air
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
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 · 144 ft²Porch · 24 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
Seneca Elementary SchoolC-
Elementary · Grades PK–5 · 0.3 mi
M
Stemmers Run Middle SchoolD
Middle · Grades 6–8 · 3.6 mi
H
Kenwood High SchoolD-
High · Grades 9–12 · 3.8 mi

District: Baltimore County Public Schools

Neighborhood · ZIP 21220These 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.107
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.95
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.48

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.18%
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.43,388
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,388 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$88,236
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$102,046
Average tempThe average temperature here across a full year.56°F
Annual precipHow much rain and melted snow falls here in a typical year.46 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

3 Mainsail Ct 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 more per square foot than 84% of homes in Middle River 21220
  • Smaller than 74% of homes in Baltimore County
  • Newer than 87% of homes in Baltimore County

What homes are worth in Middle River 21220

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

This home
$154K$855K

This home is worth more than 55% of homes in Middle River 21220.

How it measures up in Middle River 21220

The dot is this home. The mark in the middle is the typical home in Middle River 21220.

Estimated value$348,448
CheaperTypical $333,948Pricier

Pricier than 55% of homes nearby

Price per ft²$292
CheaperTypical $215Pricier

Pricier than 84% of homes nearby

Living area1,192 ft²
SmallerTypical 1,431 ft²Bigger

Bigger than 37% of homes nearby

Lot size0.14 ac
SmallerTypical 0.13 acBigger

Bigger than 54% of homes nearby

Year built1999
OlderTypical 1980Newer

Newer than 71% of homes nearby

How 3 Mainsail Ct ranks against every home in each area.
MeasureThis homeMiddle River 21220Baltimore County
Estimated valuepricier than$348,44855% of homes48% of homes
Price per ft²pricier than$29284% of homes82% of homes
Living areabigger than1,192 ft²37% of homes26% of homes
Lot sizebigger than0.14 ac54% of homes41% of homes
Year builtnewer than199971% of homes87% of homes

About 3 Mainsail Ct

How much is 3 Mainsail Ct, Baltimore, MD worth?

The TopHap Estimate for 3 Mainsail Ct, Baltimore, MD is $348,448 as of Sep 24, 2026. The likely range is $326,210 to $370,686. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3 Mainsail Ct, Baltimore, MD last sell?

3 Mainsail Ct, Baltimore, MD last sold on May 12, 1999 for $136,750, according to the county's recorded deed.

How big is 3 Mainsail Ct, Baltimore, MD?

3 Mainsail Ct, Baltimore, MD has 2 bathrooms, 1,192 square feet of living space and a 0.14-acre lot.

When was 3 Mainsail Ct, Baltimore, MD built?

3 Mainsail Ct, Baltimore, MD was built in 1999, making it 27 years old. It is a split foyer home. The building has 1 story.

What schools serve 3 Mainsail Ct, Baltimore, MD?

3 Mainsail Ct, Baltimore, MD is assigned to Seneca Elementary School (elementary), rated C-; Stemmers Run Middle School (middle), rated D; Kenwood High School (high), rated D-. All sit in Baltimore County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3 Mainsail Ct, Baltimore, MD compare to other homes in Middle River 21220?

Among the 13,110 homes in Middle River 21220, it is worth more than 55% of them ($348,448 against a typical $333,948), its price per square foot is higher than 84% of them ($292 against a typical $215), it is bigger than 37% of them (1,192 ft² against a typical 1,431 ft²), its lot is bigger than 54% of them (0.14 ac against a typical 0.13 ac) and it is newer than 71% of them (1999 against a typical 1980). Measured against all of Baltimore County, it is worth more than 48% 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 3 Mainsail Ct, Baltimore, MD?

The 2025 property tax bill for 3 Mainsail Ct, Baltimore, MD was $4,022. The county assessed it at $280,533.

More homes on Mainsail Ct

Closest homes

More homes in Baltimore 21220

Assigned schools

Explore the area

See this home in context

Open 3 Mainsail Ct 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