80 Decatur Ave is a 672 square foot house on a 4,356 square foot lot with 1 bedroom and 1 bathroom. - it last sold on September 22, 2008 for $454,000. Based on Redfin's Guilford data, we estimate the home's value is $600,299.
Single-familyProperty Type
1940Year Built
4,356 sq ftLot Size
$893Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$600,299
$146K since sold in September 2008$15K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 30% lower than the average sale price ($858K) 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.
Permits
Jan 11, 2027 • Active
Building - addition (residential)
Addition
Dec 17, 2025 • Final
Planning & zoning - new additions
Enclose an existing open porch area to create additional living space.
Addition
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: 480
Basement Type: Full
Bathroom Information
# of Full Baths: 1
Heating & Cooling
Heating Type: Baseboard
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 5
Exterior
Exterior Information
Physical Condition: Good
Building Style Type: Cape Cod
Construction Type: Frame
Exterior Wall: Wood Siding/Shingle
Roof Shape Type: Gable
Property Information
Living Sq. Ft: 672
# of Units: 1
# of Stories: 1
Lot Information
# of Buildings: 1
Land Sq. Ft: 4,356
Municipality Name: GUILFORD
Acres: 0.1
Zoning Code: R-2
State Use Description: 1-FAMILY RESIDENCE
Utility Information
Sewer Type: Septic
Water Service Type: Well
Financial
Assessor Information
Assessment Year: 2023
Public facts
Beds: 1
Baths: 1.0
Sq. Ft.: 672
Stories: 1.0
Lot Size: 4,356 square feet
Style: Single Family Residential
Year Built: 1940
Year Renovated: 1986
County: New Haven County
APN: 1118123
Home facts updated by county records on Jul 13, 2023
Around this home
Schools
A. W. Cox School
Public K-4 • Assigned • 2.1mi
7/10
E. C. Adams Middle School
Public 7-8 • Assigned • 2.4mi
8/10
Guilford 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
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
6/10 Heat Factor
7 days above 92° 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
$571,000 – $691,000
Reach more buyers when you sell with Redfin. Save up to $6,003 in fees.3 minutes to get started.
Get a free, detailed breakdown of how we calculated your estimate.