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Rural ResidenceResidential
$699,314$206 / 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 82How 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

4209 OSBORN RD

BORING, MD 21020
4 / 1
Baths
3,394 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.
8.31 ac
Lot SizeThe size of the land the home sits on, from county records.
2002
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

$699K
$575K low$824K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,986 (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.$534,333 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$476,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$649,400

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Rural Residence
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountyBaltimore
Lot (acres)The size of the land the home sits on, from county records.8.31
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
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 · 540 ft²Porch · 36 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.

M
Franklin Middle SchoolD
Middle · Grades 6–8 · 4.7 mi
E
Franklin Elementary SchoolB+
Elementary · Grades PK–5 · 4.8 mi
H
Franklin High SchoolC-
High · Grades 9–12 · 5.6 mi

District: Baltimore County Public Schools

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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

4209 Osborn 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 90% of homes in Baltimore County
  • Costs less per square foot than 67% of homes in Baltimore County
  • Bigger than 94% of homes in Baltimore County
  • Has a bigger lot than 98% of homes in Baltimore County
  • Newer than 90% of homes in Baltimore County

What homes are worth in Baltimore County

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

This home
$269K$704K

This home is worth more than 93% of homes in Baltimore County.

How it measures up in Baltimore County

The dot is this home. The mark in the middle is the typical home in Baltimore County.

Estimated value$699,314
CheaperTypical $357,356Pricier

Pricier than 90% of homes nearby

Price per ft²$206
CheaperTypical $231Pricier

Pricier than 33% of homes nearby

Living area3,394 ft²
SmallerTypical 1,483 ft²Bigger

Bigger than 94% of homes nearby

Lot size8.31 ac
SmallerTypical 0.17 acBigger

Bigger than 98% of homes nearby

Year built2002
OlderTypical 1965Newer

Newer than 90% of homes nearby

How 4209 Osborn Rd ranks against every home in each area.
MeasureThis homeBaltimore County
Estimated valuepricier than$699,31490% of homes
Price per ft²pricier than$20633% of homes
Living areabigger than3,394 ft²94% of homes
Lot sizebigger than8.31 ac98% of homes
Year builtnewer than200290% of homes

About 4209 Osborn Rd

How much is 4209 Osborn Rd, Boring, MD worth?

The TopHap Estimate for 4209 Osborn Rd, Boring, MD is $699,314 as of Sep 24, 2026. The likely range is $574,886 to $823,742. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4209 Osborn Rd, Boring, MD last sell?

4209 Osborn Rd, Boring, MD last sold on Apr 28, 1999, according to the county's recorded deed.

How big is 4209 Osborn Rd, Boring, MD?

4209 Osborn Rd, Boring, MD has 4 bathrooms, 3,394 square feet of living space and a 8.31-acre lot.

When was 4209 Osborn Rd, Boring, MD built?

4209 Osborn Rd, Boring, MD was built in 2002, making it 24 years old. It is a conventional home. The building has 2 stories.

What schools serve 4209 Osborn Rd, Boring, MD?

4209 Osborn Rd, Boring, MD is assigned to Franklin Middle School (middle), rated D; Franklin Elementary School (elementary), rated B+; Franklin High School (high), rated C-. All sit in Baltimore County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4209 Osborn Rd, Boring, MD compare to other homes in Baltimore County?

Among the 259,543 homes in Baltimore County, it is worth more than 90% of them ($699,314 against a typical $357,356), its price per square foot is higher than 33% of them ($206 against a typical $231), it is bigger than 94% of them (3,394 ft² against a typical 1,483 ft²), its lot is bigger than 98% of them (8.31 ac against a typical 0.17 ac) and it is newer than 90% of them (2002 against a typical 1965). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 4209 Osborn Rd, Boring, MD?

The 2025 property tax bill for 4209 Osborn Rd, Boring, MD was $5,986. The county assessed it at $534,333.

More homes on Osborn Rd

Closest homes

More homes in Boring 21020

Assigned schools

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