521 Brookside Ave is a 2,879 square foot house on a 0.32 acre lot with 4 bedrooms and 2.5 bathrooms. Based on Redfin's Algonquin data, we estimate the home's value is $526,379.
Single-familyProperty Type
2001Year Built
0.32 acresLot Size
$183Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$526,379
$1,000 since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 3% lower than the average sale price ($543K) of 6 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2025
$11,021 (+6.9%)
$25,250 + $125,923
$151,173
2024
$10,313 (+5.2%)
$23,356 + $116,477
$139,833
2023
$9,800 (−3.5%)
$20,889 + $104,174
$125,063
2022
$10,152 (+4.1%)
$26,065 + $98,308
$124,373
2021
$9,749 (+2.7%)
$24,283 + $91,586
$115,869
2020
$9,497 (+2.4%)
$23,423 + $88,344
$111,767
2019
$9,272 (−11.3%)
$22,419 + $84,556
$106,975
2018
$10,451 (+1.9%)
$20,710 + $94,931
$115,641
2017
$10,251 (+1.4%)
$20,710 + $94,931
$115,641
2016
$10,113 (+1.9%)
$19,510 + $89,431
$108,941
2015
$9,927 (−1.4%)
$18,299 + $83,878
$102,177
2013
$10,068 (+1.7%)
$17,070 + $83,015
$100,085
2012
$9,902 (+4.1%)
$18,196 + $88,493
$106,689
2011
$9,509 (−4.0%)
$20,009 + $97,309
$117,318
2010
$9,905 (+2.9%)
$21,384 + $111,568
$132,952
2008
$9,625 (+5.1%)
$21,384 + $125,297
$146,681
2007
$9,161
$20,793 + $121,837
$142,630
Tax history for 521 Brookside Ave
Year
Property tax
Land + Additions
Assessment*
2025
$11,021 (+6.9%)
$25,250 + $125,923
$151,173
2024
$10,313 (+5.2%)
$23,356 + $116,477
$139,833
2023
$9,800 (−3.5%)
$20,889 + $104,174
$125,063
2022
$10,152 (+4.1%)
$26,065 + $98,308
$124,373
2021
$9,749 (+2.7%)
$24,283 + $91,586
$115,869
2020
$9,497 (+2.4%)
$23,423 + $88,344
$111,767
2019
$9,272 (−11.3%)
$22,419 + $84,556
$106,975
2018
$10,451 (+1.9%)
$20,710 + $94,931
$115,641
2017
$10,251 (+1.4%)
$20,710 + $94,931
$115,641
2016
$10,113 (+1.9%)
$19,510 + $89,431
$108,941
2015
$9,927 (−1.4%)
$18,299 + $83,878
$102,177
2013
$10,068 (+1.7%)
$17,070 + $83,015
$100,085
2012
$9,902 (+4.1%)
$18,196 + $88,493
$106,689
2011
$9,509 (−4.0%)
$20,009 + $97,309
$117,318
2010
$9,905 (+2.9%)
$21,384 + $111,568
$132,952
2008
$9,625 (+5.1%)
$21,384 + $125,297
$146,681
2007
$9,161
$20,793 + $121,837
$142,630
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Property details
Interior
Basement Information
Basement Sq. Ft: 1,134
Bathroom Information
# of Full Baths: 2
# of 1/2 Baths: 1
Heating & Cooling
Heating Type: Forced Air Gas
Exterior
Exterior Information
Exterior Wall: Frame Siding
Property Information
Subdivision Name: CREEKSIDE/ALGONQUIN/GLENS PH 02
Living Sq. Ft: 2,879
Ground Floor Sq. Ft: 1,432
Building Sq. Ft: 4,013
# of Stories: 2
Legal Description: DOC 2001R0074175 (RE-RECORD) LT 54 CREEKSIDE OF ALGONQUIN THE GLENS PHASE 1 MEMO: AGABIN, TERENCE C/ TUBAYAN, ELENA P MEMO: COPY OF MARRIAGE CERTIFICATE ON FILE BETWEEN TERENCE C AGABIN AND ELENA P TUBAYAN NKA ELENA P AGABIN
Lot Information
# of Buildings: 1
Land Sq. Ft: 13,835
Legal Lot Number: 54
Municipality Name: ALGONQUIN TOWNSHIP
Acres: 0.3176
County Use Description: RESIDENTIAL
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 4
Baths: 2.5
Sq. Ft.: 2,879
Stories: 2.0
Lot Size: 0.32 acres
Style: Single Family Residential
Year Built: 2001
Year Renovated: —
County: McHenry County
APN: 19-30-376-016
Home facts updated by county records on Sep 2, 2026
Around this home
Schools
Lincoln Prairie Elementary School
Public PreK-5 • Assigned • 0.6mi
7/10
Westfield Community School
Public PreK-8 • Assigned • 2.2mi
7/10
Harry D Jacobs High School
Public 9-12 • Assigned • 0.5mi
8/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
2/10 Heat Factor
7 days above 100° expected this year, 14 days in 30 years
2/10 Wind Factor
1% chance of strong winds in next 30 years
2/10 Air Factor
1 unhealthy days expected this year, 2 days in 30 years
Provided by First Street
Historical weather
Algonquin, IL • 60102
Average low and high temperatures (°F)
28
13
36
20
53
32
61
42
69
47
81
61
85
66
80
62
78
56
67
47
49
35
35
21
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 10.1 hours in
June and 3.4 hours in December, placing it below the
U.S. average for solar exposure.
10.1 hrs
3.4 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$501,000 – $607,000
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