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Single Family ResidenceResidential
$627,934$291 / 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 $355,000 on Aug 14, 2015

4305 ROUNDNOLL RD

BALDWIN, MD 21013
3 / 1
Baths
2,160 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.
1.21 ac
Lot SizeThe size of the land the home sits on, from county records.
1902
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$628K
$588K low$668K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$355,000 · Aug 14, 2015

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,427 (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.$442,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$199,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$243,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$414,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$442,800

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.Conventional
CountyBaltimore
Lot (acres)The size of the land the home sits on, from county records.1.21
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.Porch · 354 ft²

Transaction History(2)

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
Carroll Manor Elementary SchoolA
Elementary · Grades KG–5 · 1.2 mi
H
Dulaney High SchoolA-
High · Grades 9–12 · 5.9 mi
M
Cockeysville Middle SchoolB
Middle · Grades 6–8 · 6.3 mi

District: Baltimore County Public Schools

Neighborhood · ZIP 21013These 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.86
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.47

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.4,797
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.307 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$166,280
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$190,242
Average tempThe average temperature here across a full year.54°F
Annual precipHow much rain and melted snow falls here in a typical year.47 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%

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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

4305 Roundnoll 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 86% of homes in Baltimore County
  • Costs more per square foot than 81% of homes in Baltimore County
  • Bigger than 79% of homes in Baltimore County
  • Has a bigger lot than 91% of homes in Baltimore County
  • Among the oldest homes in Baltimore County

What homes are worth in Baldwin 21013

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

This home
$358K$1.5M

This home is worth more than 46% of homes in Baldwin 21013.

How it measures up in Baldwin 21013

The dot is this home. The mark in the middle is the typical home in Baldwin 21013.

Estimated value$627,934
CheaperTypical $642,263Pricier

Pricier than 46% of homes nearby

Price per ft²$291
CheaperTypical $273Pricier

Pricier than 68% of homes nearby

Living area2,160 ft²
SmallerTypical 2,364 ft²Bigger

Bigger than 37% of homes nearby

Lot size1.21 ac
SmallerTypical 1.28 acBigger

Bigger than 47% of homes nearby

Year built1902
OlderTypical 1979Newer

Newer than 3% of homes nearby

How 4305 Roundnoll Rd ranks against every home in each area.
MeasureThis homeBaldwin 21013Baltimore County
Estimated valuepricier than$627,93446% of homes86% of homes
Price per ft²pricier than$29168% of homes81% of homes
Living areabigger than2,160 ft²37% of homes79% of homes
Lot sizebigger than1.21 ac47% of homes91% of homes
Year builtnewer than19023% of homesalmost no homes

About 4305 Roundnoll Rd

How much is 4305 Roundnoll Rd, Baldwin, MD worth?

The TopHap Estimate for 4305 Roundnoll Rd, Baldwin, MD is $627,934 as of Jul 14, 2026. The likely range is $588,032 to $667,836. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4305 Roundnoll Rd, Baldwin, MD last sell?

4305 Roundnoll Rd, Baldwin, MD last sold on Aug 14, 2015 for $355,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 4305 Roundnoll Rd, Baldwin, MD?

4305 Roundnoll Rd, Baldwin, MD has 3 bathrooms, 2,160 square feet of living space and a 1.21-acre lot.

When was 4305 Roundnoll Rd, Baldwin, MD built?

4305 Roundnoll Rd, Baldwin, MD was built in 1902, making it 124 years old. It is a conventional home. The building has 2 stories.

What schools serve 4305 Roundnoll Rd, Baldwin, MD?

4305 Roundnoll Rd, Baldwin, MD is assigned to Carroll Manor Elementary School (elementary), rated A; Dulaney High School (high), rated A-; Cockeysville Middle School (middle), rated B. All sit in Baltimore County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4305 Roundnoll Rd, Baldwin, MD compare to other homes in Baldwin 21013?

Among the 1,742 homes in Baldwin 21013, it is worth more than 46% of them ($627,934 against a typical $642,263), its price per square foot is higher than 68% of them ($291 against a typical $273), it is bigger than 37% of them (2,160 ft² against a typical 2,364 ft²), its lot is bigger than 47% of them (1.21 ac against a typical 1.28 ac) and it is newer than 3% of them (1902 against a typical 1979). Measured against all of Baltimore County, it is worth more than 86% 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 4305 Roundnoll Rd, Baldwin, MD?

The 2025 property tax bill for 4305 Roundnoll Rd, Baldwin, MD was $5,427. The county assessed it at $442,800.

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