Sunnyside Ave, Darien, CT Property Records

Darien Town property records for 15 addresses on Sunnyside Ave, Darien, CT · Last verified July 2026

Sunnyside Ave Highlights

Properties 15
Median Sale Price $1,675,000
Deeds and Mortgages on File 27
Median Price per Sqft $571
Owner Occupied 93%
Median Annual Tax Bill $15,511
Median Year Built 1930
Median Ownership Tenure 10 years

Properties on Sunnyside Ave

Owner names and prior sale amounts shown locked below are available instantly with a free trial.

1 Sunnyside Ave

5 bd · 3.5 ba · 2,830 sqft · built 1928 · 0.5 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,000,000Jun 2005 $19,3872025 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

5 Sunnyside Ave

4 bd · 2.5 ba · 2,139 sqft · built 1930 · 0.21 acres

Last Sale Tax Bill Prior Sale Owner Records
$880,000Sep 2016 $17,0712025 Amount on Record Jun 2011 2 Names on Record Owner Occupied Assessor + 5 DocumentsUpdated Jul 2026

6 Sunnyside Ave

3 bd · 1.5 ba · 1,534 sqft · built 1923 · 0.15 acres

Last Sale Tax Bill Prior Sale Owner Records
$810,000Dec 2004 $13,6772025 Amount on Record Jun 1997 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

7 Sunnyside Ave

3 bd · 2 ba · 1,485 sqft · built 1948 · 0.2 acres

Last Sale Tax Bill Prior Sale Owner Records
$13,0732025 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

8 Sunnyside Ave

3 bd · 3 ba · 1,982 sqft · built 1930 · 0.21 acres

Last Sale Tax Bill Prior Sale Owner Records
$360,000Apr 1991 $15,3722024 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

9 Sunnyside Ave

3 bd · 1.5 ba · 1,312 sqft · built 1935 · 0.2 acres

Last Sale Tax Bill Prior Sale Owner Records
$750,000Mar 2021 $12,9922025 Amount on Record Dec 1988 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

10 Sunnyside Ave

4 bd · 1.5 ba · 1,948 sqft · built 1930 · 0.21 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,600,000Jun 2007 $14,9742025 Amount on Record Sep 1993 1 Name on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

11 Sunnyside Ave

4 bd · 2.5 ba · 2,176 sqft · built 1930 · 0.2 acres

Last Sale Tax Bill Prior Sale Owner Records
$480,000Jun 1997 $15,6292025 Amount on Record Dec 1996 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

12 Sunnyside Ave

4 bd · 3.5 ba · 2,720 sqft · built 1926 · 0.21 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,999,000Jan 2022 $21,2522025 Amount on Record Mar 2021 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

13 Sunnyside Ave

3 bd · 3 ba · 2,284 sqft · built 1946 · 0.2 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,150,000Oct 2016 $15,5112025 Amount on Record Jul 1991 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

14 Sunnyside Ave

3 bd · 2.5 ba · 2,107 sqft · built 1929 · 0.21 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,350,000Feb 2016 $17,3802025 Amount on Record Jul 2013 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

15 Sunnyside Ave

3 bd · 2 ba · 1,858 sqft · built 1926 · 0.192 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,875,000Dec 2025 $15,2942024 Amount on Record Aug 2022 1 Name on Record Assessor + 4 DocumentsUpdated Jul 2026

16 Sunnyside Ave

4 bd · 2 ba · 3,032 sqft · built 1950 · 0.169 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,155,000Apr 2016 $15,9832025 Amount on Record Oct 1993 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

17 Sunnyside Ave

3 bd · 2.5 ba · 1,378 sqft · built 1927 · 0.189 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,675,000Mar 2026 $13,7562025 Amount on Record May 2018 2 Names on Record Owner Occupied Assessor + 5 DocumentsUpdated Jul 2026

19 Sunnyside Ave

4 bd · 3.5 ba · 4,050 sqft · built 1936 · 0.31 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,740,000Dec 2021 $22,9052025 Amount on Record Dec 2000 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

Wildfire Risk on Sunnyside Ave

Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020

Wildfire RiskLow
this street's cells rank above 20% of the US · above 55% of Connecticut
Wildfire LikelihoodAbout 1 in 10,000 per year
ExposureDirect
1 of 3 cells directly exposed · 3 adjoin burnable vegetation

Property Records in Nearby Streets