7770 Old Post Rd is a 2,967 square foot house on a 0.77 acre lot with 4 bedrooms and 2.5 bathrooms. - it last sold on October 06, 1997 for $260,000. Based on Redfin's Crystal Lake data, we estimate the home's value is $501,788.
Single-familyProperty Type
1993Year Built
0.77 acresLot Size
$169Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$501,788
$242K since sold in October 1997$2,000 since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 2.4% higher than the average sale price ($490K) of 6 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning and permits
Zoning
Permits
RE
Residential Estate District
These districts are the City's primary single-family detached residential districts. They permit a wide range of residential living styles and encourage a variety of housing types.
Permitted uses
Include but are not limited to:
Agriculture
Housing-Single unit
Library
Park & open space
May 24, 2023 • Final
Instant
Replace the roof of a residential building.
Roofing
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Interior
Basement Information
Basement Sq. Ft: 1,349
Bathroom Information
# of Full Baths: 2
# of 1/2 Baths: 1
Heating & Cooling
Heating Type: Forced Air Gas
Exterior
Exterior Information
Building Style Type: Colonial
Exterior Wall: Frame Siding
Property Information
Subdivision Name: MONTICELLO SUB
Living Sq. Ft: 2,967
Ground Floor Sq. Ft: 1,604
Building Sq. Ft: 4,316
# of Stories: 2
Legal Description: DOC 2017R0031588 LT 8 MONTICELLO SUB UNIT 2
Lot Information
# of Buildings: 1
Land Sq. Ft: 33,541
Legal Lot Number: 8
Legal Block Number: 429
Municipality Name: ALGONQUIN TOWNSHIP
Acres: 0.77
County Use Description: RESIDENTIAL
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 4
Baths: 2.5
Sq. Ft.: 2,967
Stories: 2.0
Lot Size: 0.77 acres
Style: Single Family Residential
Year Built: 1993
Year Renovated: —
County: McHenry County
APN: 19-10-429-001
Home facts updated by county records on Jun 15, 2026
Around this home
Schools
Canterbury Elementary School
Public K-5 • Assigned • 2.0mi
5/10
Hannah Beardsley Middle School
Public 6-8 • Assigned • 2.0mi
7/10
Prairie Ridge High School
Public 9-12 • Assigned • 4.1mi
9/10
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
3/10 Fire Factor
0.15% chance of being 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
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
Crystal Lake, IL • 60014
Average low and high temperatures (°F)
28
13
36
20
53
32
60
42
68
49
80
62
83
67
80
63
78
57
66
47
49
36
34
20
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
$477,000 – $578,000
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