OFF MARKET
$1,469,046
4
bd
3 ba
2,656
sq ft

520 Colonial Rd, Guilford, CT 06437

map-entry

About this home

520 Colonial Rd is a 2,656 square foot house on a 0.92 acre lot with 4 bedrooms and 3 bathrooms. Based on Redfin's Guilford data, we estimate the home's value is $1,469,046.
Single-familyProperty Type
1960Year Built
0.92 acresLot Size
$553Est. Price/Sq.Ft.
Source:Public Records

Redfin Estimate

$1,469,046
$6,000 since July

This home's estimate is 72.5% higher than the average sale price ($852K) of 6 comparable homes.

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Earn from this home

Sell
$1,382,638
Est. take-home

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Rent
$4,019/mo
Redfin rental estimate

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Market trends in 06437, CT

Sale history for 520 Colonial Rd

As the MLS and public records start to fill up, we'll list the details here.

Tax history for 520 Colonial Rd

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Permits

Nov 20, 2026Active
Building - mechanical lp tank (residential)

Install two above-ground propane tanks. All work must comply with safety standards regarding separation distances from buildings, property lines, and sources of ignition.

Gas

Oct 24, 2026Active
Building - mechanical (stand alone work)

Replace an existing electric hot water boiler with a new propane boiler system. Install ductless systems to add air conditioning to the home.

Gas

HVAC

Plumbing

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

Around this home

Schools

A. W. Cox School

Public K-4 • Assigned • 2.7mi

7/10
E. C. Adams Middle School

Public 7-8 • Assigned • 3.2mi

8/10
Guilford High School

Public 9-12 • Assigned • 4.5mi

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

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

6/10 Heat Factor

7 days above 93° expected this year, 17 days in 30 years

7/10 Wind Factor

78% chance of strong winds in next 30 years

4/10 Air Factor

5 unhealthy days expected this year, 7 days in 30 years

Provided by First Street

Historical weather

Guilford, CT • 06437
Average low and high temperatures (°F)
35
22
37
23
52
34
61
42
69
52
81
61
85
68
81
62
76
57
65
47
54
38
40
26
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Sun exposure

In this area, properties receive around 9 hours in June and 4.5 hours in December, which is comparable to the U.S. average for solar exposure.

9 hrs
4.5 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.40M – $1.69M

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GreatSchools Ratings provided by GreatSchools.org.