MULTI-GENERATIONAL LIVING AT ITS BEST! Welcome to 640 Ash Street, offering 5 bedrooms, 3 full baths, a possible 6th bedroom, and a private in-law suite with its own separate entrance! This flexible layout provides incredible options for extended family, guests, a home office, or additional living space. The main home features a remodeled kitchen (2016), newer windows, fresh paint, and professionally cleaned carpets. For added convenience, laundry hookups are available on the main level AND within the in-law suite. The outdoor space is just as inviting! Enjoy a fully fenced backyard featuring a deck plus a patio with pergola-perfect for summer entertaining, grilling, or relaxing outdoors. An expanded driveway provides plenty of additional parking. Located on a quiet street with beautiful lush greenery directly across the street, this home offers a peaceful setting while still being close to everything Algonquin has to offer. Major updates include siding and gutters (2016) and roof (2019). If you've been searching for a home with SPACE, FLEXIBILITY, and a true separate in-law living arrangement, this is one you don't want to miss. Schedule your showing today!
Single-familyProperty Type
1978Year Built
0.25 acresLot Size
$149Price/Sq.Ft.
2 car garageParking
Listed by Nicole Ramirez• Keller Williams Inspire - Geneva
Seller needs offers now! Freshly painted living areas - huge 5/6 bedrm, 3 ba home, 2 fully loaded kitchens. New deck, quiet neighborhood, tree lined pvt back yard and no homes across street. Full, finished walk out lower level all on large lot! A little TLC & you can be settled for the holidays!
MRED as Distributed by MLS Grid #07915875
Jan 10, 2012
Listing Removed
—
Dec 15, 2011
Price Changed (Price Change)
*
Oct 26, 2011
Price Changed (Price Change)
*
Oct 2, 2011
Listed (New)
*
MRED as Distributed by MLS Grid #07136280
Aug 18, 2010
Listing Removed
—
Mar 30, 2010
Price Changed (Price Change)
*
Aug 22, 2009
Price Changed (Price Change)
*
Mar 31, 2009
Price Changed
*
Feb 15, 2009
Listed
*
MRED as Distributed by MLS Grid #06689276
May 27, 2008
Listing Removed
—
Oct 1, 2007
Listed
*
MRED as Distributed by MLS Grid #06456150
Sep 11, 2007
Listing Removed
—
Mar 27, 2007
Listed
*
Public Records
Jul 2, 1991
Sold
$170,000
$57/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$9,250 (+7.5%)
$24,169 + $111,990
$136,159
2024
$8,601 (+6.3%)
$22,356 + $103,589
$125,945
2023
$8,090 (−1.7%)
$19,995 + $92,647
$112,642
2022
$8,232 (+4.6%)
$19,398 + $87,596
$106,994
2021
$7,869 (+2.9%)
$18,072 + $81,606
$99,678
2020
$7,646 (+2.8%)
$17,432 + $78,717
$96,149
2019
$7,440 (+5.5%)
$16,685 + $75,342
$92,027
2018
$7,055 (−4.4%)
$15,413 + $69,600
$85,013
2017
$7,378 (−6.6%)
$15,413 + $69,600
$85,013
2016
$7,899 (+1.5%)
$14,520 + $65,568
$80,088
2015
$7,785 (+7.3%)
$13,618 + $61,497
$75,115
2013
$7,256 (+1.5%)
$12,703 + $61,106
$73,809
2012
$7,152 (+3.9%)
$13,541 + $65,138
$78,679
2011
$6,881 (+1.9%)
$14,890 + $71,627
$86,517
2010
$6,751 (+2.8%)
$15,913 + $76,549
$92,462
2008
$6,569 (+4.8%)
$15,913 + $86,097
$102,010
2007
$6,270
$15,474 + $83,719
$99,193
Public record
Beds
5
Baths
3
Stories
1
Lot width
—
Lot depth
—
Lot size
0.25 Acres
Year renovated
—
Finished Sq. Ft.
2,992
Unfinished Sq. Ft.
—
Total Sq. Ft.
2,992
Year built
1978
Style
Single Family Residential
County
McHenry County
APN
19-27-330-025
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Sep 2, 2026.
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 101° expected this year, 14 days in 30 years
2/10 Wind Factor
0% 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
84
67
80
62
78
56
67
47
49
35
35
21
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
92/ 100
Exceptional sunlight
Sunscore
There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
10.3 hrs
5.6 hrs
JuneDecember
Provided by Shadowmap
Redfin Estimate for 640 Ash St
$444,780
$220 under list price of $445K
Nearby comparable homes
The Redfin Estimate uses 6 recent nearby sales, priced between $375K to $500K.