Skip to content
Skip to content
TopHapOpen in map
CondominiumResidential

503 King Farm Blvd

ROCKVILLE, MD 20850
922 ft²
Lot SizeThe size of the land the home sits on, from county records.
2004
Year BuiltThe year the home was originally built, according to county records.
Built 20044 floors28 units1,348–3,694 ft²
$15M
All units combinedThe sum of our current value estimates for every unit in the building — roughly what the whole building's homes are worth together.
$519K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$314
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

-10.4%vs the Rockville ZIP median sale $/ft² ($351)

Sales Performance

—
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
—
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
0
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
0.0%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+2.2%per yeartypical hold 8.7 yrsfrom 13 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
20042006201020122015201720212025
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
20042006201020122015201720212025

35 arms-length sales on record for this building.

Unit Mix & Floor PlansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.

Every unit: size vs estimated valueEvery unit in the building as one dot: across is its size, up is our current value estimate, and color is its bedroom count. Vertical columns of dots are recurring floor plans; the height spread within a column shows how much floor, view and condition move prices for the same layout.
$441K$604K$767K$930K1,348 ft²1,817 ft²2,286 ft²2,756 ft²3,225 ft²3,694 ft²
Studio
Studio
28 units
Recurring floor plansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
Studio · 0 ba · 1,608 ft²
6 units
Studio · 0 ba · 1,729 ft²
6 units
Studio · 0 ba · 1,436 ft²
4 units
Studio · 0 ba · 1,703 ft²
4 units
Studio · 0 ba · 1,348 ft²
2 units
Studio · 0 ba · 2,322 ft²
2 units
One-off layouts
4 units

Value DistributionHow the building's units spread across value ranges by our current estimates. A wide spread usually means big differences in size, floor or view.

$441K–$500K
7 units
$505K–$554K
18 units
$624K–$624K
2 units
$930K–$930K
1 unit

Value by Floor & LineAverage estimated price per square foot by floor range, using unit numbers to infer floors. Higher floors usually price higher — the gap shows how much the view is worth here.

Floor 1
$311/ft²
Floor 2
$316/ft²
Floor 3
$314/ft²
Floor 4
$290/ft²
Unit lines by $/ft²Condo units stacked vertically share a unit line — the last digits of the unit number (like 05 in 1205, 1305, 1405). Lines share a layout and exposure, so comparing estimated $/ft² by line shows which position in the building commands a premium.
Line ·07
$319/ft²
Line ·04
$316/ft²
Line ·01
$316/ft²
Line ·03
$308/ft²
Line ·02
$303/ft²
Line ·05
$296/ft²
Line ·06
$295/ft²

Ownership & Financing

Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.50%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.29%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.12.7 yrs
Cash purchases (5 yrs)The share of purchases in the last 5 years with no mortgage recorded. High cash share is common in second-home and investor buildings.33%
Avg. loan-to-valueAverage current loan balance against unit value across the building. Low numbers mean owners hold lots of equity — a sign of financial stability.31%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$509,577
Median tax billThe middle annual property tax bill among the building's units.$5,641
Pre-foreclosure noticesUnits with an active pre-foreclosure or foreclosure notice on file.0

Recent SalesThe latest recorded arms-length sales in the building, newest first.

Unit 306Sep 4, 2025$450,000Unit 307Jun 16, 2025$445,000Unit 204Apr 29, 2025$495,000Unit 203Jan 16, 2025$595,000Unit 403Aug 9, 2023$575,000Unit 406May 17, 2023$834,000Unit 305Jun 17, 2021$430,000Unit 207May 19, 2021$455,000Unit 207Feb 24, 2021$400,000Unit 105Oct 20, 2020$479,000

Values are TopHap estimates, not appraisals. Sales, ownership and tax figures come from recorded county documents via ATTOM and can lag by several weeks.

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.38
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
4
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
74
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
77
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
34
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyMONTGOMERY
Lot (acres)The size of the land the home sits on, from county records.0.02
PoolWhether the property has a pool, and what kind, such as in-ground.No

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Washington Grove Elementary SchoolC+
Elementary · Grades PK–5 · 1.4 mi
H
Gaithersburg High SchoolD
High · Grades 9–12 · 1.9 mi
M
Gaithersburg Middle SchoolD
Middle · Grades 6–8 · 2.3 mi

District: Montgomery County Public Schools

Neighborhood · ZIP 20850These 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.104
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 100.40

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.95%
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.7.8%
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.51,693
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,703 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$126,425
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$154,183
Average tempThe average temperature here across a full year.54°F
Annual precipHow much rain and melted snow falls here in a typical year.43 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%

All UnitsEvery property record the county has at this street address, such as the units in a condo building. Prices shown are our estimates, not asking prices.

503 King Farm Blvd # 101
1,635 ft²
$522K
503 King Farm Blvd # 102
1,348 ft²
$443K
503 King Farm Blvd # 103
1,348 ft²
$441K
503 King Farm Blvd # 104
1,636 ft²
$523K
503 King Farm Blvd # 105
2,074 ft²
$543K
503 King Farm Blvd # 201
1,608 ft²
$505K
503 King Farm Blvd # 202
1,703 ft²
$531K
503 King Farm Blvd # 203
1,703 ft²
$531K
503 King Farm Blvd # 204
1,608 ft²
$515K
503 King Farm Blvd # 205
1,729 ft²
$546K
503 King Farm Blvd # 206
1,436 ft²
$454K
503 King Farm Blvd # 207
1,436 ft²
$465K
503 King Farm Blvd # 208
1,729 ft²
$539K
503 King Farm Blvd # 301
1,608 ft²
$507K
503 King Farm Blvd # 302
1,703 ft²
$515K
503 King Farm Blvd # 303
1,703 ft²
$554K
503 King Farm Blvd # 304
1,608 ft²
$500K
503 King Farm Blvd # 305
1,729 ft²
$536K
503 King Farm Blvd # 306
1,436 ft²
$456K
503 King Farm Blvd # 307
1,436 ft²
$456K
503 King Farm Blvd # 308
1,729 ft²
$544K
503 King Farm Blvd # 401
1,608 ft²
$505K
503 King Farm Blvd # 402
2,322 ft²
$624K
503 King Farm Blvd # 403
2,322 ft²
$624K
503 King Farm Blvd # 404
1,608 ft²
$505K
503 King Farm Blvd # 405
1,729 ft²
$512K
503 King Farm Blvd # 406
3,694 ft²
$930K
503 King Farm Blvd # 407
1,729 ft²
$544K

Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

About 503 King Farm Blvd

How many units are in 503 King Farm Blvd, Rockville, MD?

503 King Farm Blvd, Rockville, MD has 28 residential units across 4 floors, built in 2004, according to county assessor records.

What is a unit at 503 King Farm Blvd, Rockville, MD worth?

The median TopHap Estimate across the 28 units at 503 King Farm Blvd, Rockville, MD is $518,655. That works out to $314 per square foot. Units run from 1,348 to 3,694 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 503 King Farm Blvd, Rockville, MD expensive for Rockville?

Units at 503 King Farm Blvd, Rockville, MD carry a median of $314 per square foot, 10% below the Rockville median of $351 per square foot.

How often do units sell at 503 King Farm Blvd, Rockville, MD?

0 units at 503 King Farm Blvd, Rockville, MD sold in the last 12 months, out of 35 recorded arms-length sales all time. That is a turnover rate of 0.0% of the building per year.

Have units at 503 King Farm Blvd, Rockville, MD appreciated?

Across 13 repeat sales of the same unit, 503 King Farm Blvd, Rockville, MD returned a median 2.2% per year. Because each pair is the same unit bought and sold, the figure is not distorted by which units traded. The median owner held for 8.7 years.

What floor plans does 503 King Farm Blvd, Rockville, MD have?

The most common plan at 503 King Farm Blvd, Rockville, MD is a 0-bedroom of 1,608 square feet, repeated 6 times, with a median estimate of $504,744. TopHap identifies 6 recurring plans in the building.

More homes on King Farm Blvd

Closest homes

More homes in Rockville 20850

Assigned schools

Explore the area

See this home in context

Open 503 King Farm Blvd 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