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Single Family ResidentialResidential

1337 21st Ave

ROCK ISLAND, IL 61201
10.46 ac
Lot SizeThe size of the land the home sits on, from county records.
1968
Year BuiltThe year the home was originally built, according to county records.
Built 1968107 units790–3,750 ft²
$13M
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.
$108K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$94
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

+6.9%vs the Rock Island ZIP median sale $/ft² ($88)

Sales Performance

$110K
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
+29.4%
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
8
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
7.5%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+1.5%per yeartypical hold 4.2 yrsfrom 62 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
19982005200820122015201920222026
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
19982005200820122015201920222026

145 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.
$87K$143K$200K$257K790 ft²1,382 ft²1,974 ft²2,566 ft²3,158 ft²3,750 ft²
1 bd2 bd3 bd
Studio
68 units
1 bed
3 units
2 bed
34 units
3 bed
2 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.
2 bd · 2 ba · 1,250 ft²
29 units
1 bd · 1 ba · 900 ft²
2 units
One-off layouts
76 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.

$87K–$107K
10 units
$108K–$127K
79 units
$133K–$150K
9 units
$151K–$165K
6 units
$186K–$186K
1 unit
$215K–$215K
1 unit
$257K–$257K
1 unit

Ownership & Financing

Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.79%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.25%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.6.0 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.68%
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.17%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$137,737
Median tax billThe middle annual property tax bill among the building's units.$86
Pre-foreclosure noticesUnits with an active pre-foreclosure or foreclosure notice on file.2

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

Unit 4DJun 5, 2026$110,000Unit 4DJun 5, 2026$110,000Unit 4DJun 5, 2026$110,000Unit 3DMay 7, 2026$120,000Unit 3DMay 7, 2026$120,000Unit 3BOct 24, 2025$105,000Unit 3BOct 24, 2025$105,000Unit 3BOct 24, 2025$105,000Unit 12AApr 14, 2025$225,000Unit 3BMar 13, 2025$85,000

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

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residential
CountyROCK ISLAND
Lot (acres)The size of the land the home sits on, from county records.10.46
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
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.

H
Rock Island High SchoolD-
High · Grades 9–12 · 0.3 mi
E
Frances Willard Elementary SchoolC+
Elementary · Grades PK–6 · 0.6 mi
M
Edison Jr High SchoolD
Middle · Grades 7–8 · 1.5 mi

District: Rock Island School District 41

Neighborhood · ZIP 61201These 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.114
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.82
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.32

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.90%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.15%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.21%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.36,706
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,955 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$60,990
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$78,271
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.36 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.55%

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.

1337 21st Ave # G1
$106K
1337 21st Ave # 2a
$108K
1337 21st Ave # 2a
$108K
1337 21st Ave # 2a
2 bd · 2 ba · 1,250 ft²
$125K
1337 21st Ave # 2b
$108K
1337 21st Ave # 2b
$108K
1337 21st Ave # 2b
2 bd · 2 ba · 1,250 ft²
$125K
1337 21st Ave # 2d
$94K
1337 21st Ave # G2
$106K
1337 21st Ave # 3a
$108K
1337 21st Ave # 3a
$108K
1337 21st Ave # 3a
2 bd · 2 ba · 1,250 ft²
$111K
1337 21st Ave # 3b
2 bd · 2 ba · 1,250 ft²
$118K
1337 21st Ave # 3b
$127K
1337 21st Ave # 3b
$108K
1337 21st Ave # 3c
2 bd · 2 ba · 1,250 ft²
$111K
1337 21st Ave # 3c
$108K
1337 21st Ave # 3d
$120K
1337 21st Ave # 3d
2 bd · 2 ba · 1,250 ft²
$114K
1337 21st Ave # 4a
2 bd · 2 ba · 1,250 ft²
$111K
1337 21st Ave # 4a
$108K
1337 21st Ave # 4a
$108K
1337 21st Ave # 4b
2 bd · 2 ba · 1,250 ft²
$118K
1337 21st Ave # 4b
$152K
1337 21st Ave # 4c
$108K
1337 21st Ave # 4c
2 bd · 2 ba · 1,250 ft²
$102K
1337 21st Ave # 4d
$108K
1337 21st Ave # 4d
2 bd · 2 ba · 1,250 ft²
$111K
1337 21st Ave # 4d
$108K
1337 21st Ave # 5a
2 bd · 2 ba · 1,250 ft²
$107K
1337 21st Ave # 5a
$108K
1337 21st Ave # 5a
$108K
1337 21st Ave # 5b
2 bd · 2 ba · 1,250 ft²
$91K
1337 21st Ave # 5b
$108K
1337 21st Ave # 5c
$108K
1337 21st Ave # 5c
2 bd · 2 ba · 1,710 ft²
$146K
1337 21st Ave # 5d
1 bd · 1 ba · 790 ft²
$87K
1337 21st Ave # 5d
$108K
1337 21st Ave # 6a
$108K
1337 21st Ave # 6a
2 bd · 2 ba · 1,250 ft²
$115K
1337 21st Ave # 6a
$102K
1337 21st Ave # 6b
$108K
1337 21st Ave # 6b
2 bd · 2 ba · 1,600 ft²
$144K
1337 21st Ave # 6c
$108K
1337 21st Ave # 6c
$108K
1337 21st Ave # 6c
2 bd · 2 ba · 1,250 ft²
$113K
1337 21st Ave # 6d
1 bd · 1 ba · 900 ft²
$91K
1337 21st Ave # 7a
2 bd · 2 ba · 1,250 ft²
$116K
1337 21st Ave # 7a
$108K
1337 21st Ave # 7b
$108K
1337 21st Ave # 7b
2 bd · 2 ba · 1,250 ft²
$119K
1337 21st Ave # 7c
2 bd · 2 ba · 1,250 ft²
$112K
1337 21st Ave # 7c
$108K
1337 21st Ave # 7d
2 bd · 2 ba · 1,250 ft²
$119K
1337 21st Ave # 7d
$108K
1337 21st Ave # 8a
2 bd · 2 ba · 1,250 ft²
$125K
1337 21st Ave # 8a
$108K
1337 21st Ave # 8a
$108K
1337 21st Ave # 8b
3 bd · 2 ba · 2,250 ft²
$186K
1337 21st Ave # 8b
$165K
1337 21st Ave # 8b
$108K
1337 21st Ave # 8b
$108K
1337 21st Ave # 8c
$108K
1337 21st Ave # 8c
$108K
1337 21st Ave # 8c
3 bd · 2 ba · 1,500 ft²
$143K
1337 21st Ave # 9a
$152K
1337 21st Ave # 9a
$108K
1337 21st Ave # 9a
2 bd · 2 ba · 1,250 ft²
$126K
1337 21st Ave # 9b
$108K
1337 21st Ave # 9b
2 bd · 2 ba · 1,250 ft²
$119K
1337 21st Ave # 9b
$108K
1337 21st Ave # 9c
$108K
1337 21st Ave # 9c
2 bd · 2 ba · 1,250 ft²
$121K
1337 21st Ave # 9c
$108K
1337 21st Ave # 9d
$108K
1337 21st Ave # 9d
2 bd · 2 ba · 1,250 ft²
$119K
1337 21st Ave # 10a
2 bd · 2 ba · 1,250 ft²
$126K
1337 21st Ave # 10a
$108K
1337 21st Ave # 10a
$108K
1337 21st Ave # 10b
$108K
1337 21st Ave # 10b
2 bd · 2 ba · 1,250 ft²
$126K
1337 21st Ave # 10b
$108K
1337 21st Ave # 10c
2 bd · 2 ba · 1,250 ft²
$120K
1337 21st Ave # 10c
$108K
1337 21st Ave # 10c
$108K
1337 21st Ave # 10d
$133K
1337 21st Ave # 10d
$108K
1337 21st Ave # 10d
2 bd · 2 ba · 1,250 ft²
$118K
1337 21st Ave # 11a
$108K
1337 21st Ave # 11a
$108K
1337 21st Ave # 11a
2 bd · 2 ba · 2,500 ft²
$215K
1337 21st Ave # 11a
$151K
1337 21st Ave # 11b
$146K
1337 21st Ave # 11b
$150K
1337 21st Ave # 11b
2 bd · 2 ba · 1,640 ft²
$144K
1337 21st Ave # 11d
$108K
1337 21st Ave # 11d
2 bd · 2 ba · 1,250 ft²
$135K
1337 21st Ave # 11d
$108K
1337 21st Ave # 12a
$108K
1337 21st Ave # 12a
$152K
1337 21st Ave # 12a
2 bd · 2.5 ba · 3,750 ft²
$257K
1337 21st Ave # 12b
$141K
1337 21st Ave # 12b
2 bd · 2 ba · 1,250 ft²
$154K
1337 21st Ave # 12b
$108K
1337 21st Ave # 12d
$108K
1337 21st Ave # 12d
$108K
1337 21st Ave # 55
1 bd · 1 ba · 900 ft²
$88K

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

About 1337 21st Ave

How many units are in 1337 21st Ave, Rock Island, IL?

1337 21st Ave, Rock Island, IL has 107 residential units across built in 1968, according to county assessor records.

What is a unit at 1337 21st Ave, Rock Island, IL worth?

The median TopHap Estimate across the 107 units at 1337 21st Ave, Rock Island, IL is $108,361. That works out to $94 per square foot. Units run from 790 to 3,750 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 1337 21st Ave, Rock Island, IL expensive for Rock Island?

Units at 1337 21st Ave, Rock Island, IL carry a median of $94 per square foot, 7% above the Rock Island median of $88 per square foot.

How often do units sell at 1337 21st Ave, Rock Island, IL?

8 units at 1337 21st Ave, Rock Island, IL sold in the last 12 months, out of 145 recorded arms-length sales all time. That is a turnover rate of 7.5% of the building per year. The median sale over that period was $110K.

Have units at 1337 21st Ave, Rock Island, IL appreciated?

Across 62 repeat sales of the same unit, 1337 21st Ave, Rock Island, IL returned a median 1.5% 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 4.2 years.

What floor plans does 1337 21st Ave, Rock Island, IL have?

The most common plan at 1337 21st Ave, Rock Island, IL is a 2-bedroom of 1,250 square feet, repeated 29 times, with a median estimate of $118,194. TopHap identifies 2 recurring plans in the building.

More homes on 21st Ave

Closest homes

More homes in Rock Island 61201

Assigned schools

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