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Residential (General/Single)Residential
$1,024,850
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 89How 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

N RIVER RUN

COLUMBIA, MD 21045
0
Baths
4.28 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$1M
$915K low$1.1M high
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$1,024,850
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$819,880

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential (General/Single)
CountyHoward
Lot (acres)The size of the land the home sits on, from county records.4.28
HeatingThe type of heating system in the home.Yes
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

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
Clarksville Middle SchoolA
Middle · Grades 6–8 · 1.2 mi
E
Swansfield Elementary SchoolB+
Elementary · Grades PK–5 · 1.6 mi
H
River Hill High SchoolA+
High · Grades 9–12 · 1.8 mi

District: Howard County Public Schools

Neighborhood · ZIP 21045These 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.113
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 100.39

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.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.6%
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.40,881
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,128 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$115,208
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$141,105
Average tempThe average temperature here across a full year.54°F
Annual precipHow much rain and melted snow falls here in a typical year.45 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.No

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

N River Run 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.

  • Among the most valuable homes in Columbia 21045
  • Has a bigger lot than 97% of homes in River Hill

What homes are worth in Columbia 21045

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

This home
$192K$778K

This home is worth more than almost all homes in Columbia 21045.

How it measures up in Columbia 21045

The dot is this home. The mark in the middle is the typical home in Columbia 21045.

Estimated value$1,024,850
CheaperTypical $476,709Pricier

Pricier than almost all homes nearby

Lot size4.28 ac
SmallerTypical 0.2 acBigger

Bigger than 93% of homes nearby

How N River Run ranks against every home in each area.
MeasureThis homeRiver HillColumbia 21045Howard County
Estimated valuepricier than$1,024,85065% of homesalmost all homes88% of homes
Lot sizebigger than4.28 ac97% of homes93% of homes93% of homes

About N River Run

How much is N River Run, Columbia, MD worth?

The TopHap Estimate for N River Run, Columbia, MD is $1,024,850 as of Jul 14, 2026. The likely range is $914,638 to $1,135,062. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

What schools serve N River Run, Columbia, MD?

N River Run, Columbia, MD is assigned to Clarksville Middle School (middle), rated A; Swansfield Elementary School (elementary), rated B+; River Hill High School (high), rated A+. All sit in Howard County Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does N River Run, Columbia, MD compare to other homes in Columbia 21045?

Among the 12,675 homes in Columbia 21045, it is worth more than almost all of them ($1,024,850 against a typical $476,709) and its lot is bigger than 93% of them (4.28 ac against a typical 0.2 ac). Measured against all of Howard County, it is worth more than 88% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

Closest homes

More homes in Columbia 21045

Assigned schools

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