Harmony St, New Castle, DE Property Records

New Castle County property records for 39 addresses on Harmony St, New Castle, DE · Last verified August 2026

Harmony St Highlights

Properties 39
Median Sale Price $335,000
Deeds and Mortgages on File 57
Median Price per Sqft $216
Owner Occupied 82%
Median Annual Tax Bill $1,555
Median Year Built 1900
Median Ownership Tenure 14 years

Properties on Harmony St

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

100 Harmony St

6 bd · 2 ba · 5,530 sqft · 0.032 acres

Last Sale Tax Bill Prior Sale Owner Records
$7092025 1 Name on Record AssessorUpdated Apr 2026

103 Harmony St

4 bd · 2.5 ba · 1,404 sqft · 0.069 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,8912025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Apr 2026

105 Harmony St

4 bd · 2 ba · 1,404 sqft · 0.1 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$340,000Nov 2018 $2,0262025 Amount on Record Apr 2007 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated May 2026

114 Harmony St

4 bd · 1.5 ba · 728 sqft · 0.05 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,8362025 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Apr 2026

115 Harmony St

3 bd · 2.5 ba · 2,493 sqft · 0.069 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$390,000Oct 2020 $2,2912025 Amount on Record Aug 1999 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Apr 2026

116 Harmony St

2 bd · 1 ba · 1,024 sqft · 0.06 acres

Last Sale Tax Bill Prior Sale Owner Records
$154,900Nov 1996 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated May 2026

117 Harmony St

3 bd · 2.5 ba · 2,493 sqft · 0.06 acres

Last Sale Tax Bill Prior Sale Owner Records
$293,100Jan 1996 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

118 Harmony St

4 bd · 2 ba · 1,624 sqft · 0.089 acres

Last Sale Tax Bill Prior Sale Owner Records
$325,000Jul 2018 Amount on Record Aug 1993 1 Name on Record Assessor + 2 DocumentsUpdated Apr 2026

119 Harmony St

3 bd · 1.5 ba · 1,644 sqft · 0.03 acres

Last Sale Tax Bill Prior Sale Owner Records
$410,000Jul 2025 $1,6382025 Amount on Record Dec 2020 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

121 Harmony St

3 bd · 2 ba · 1,648 sqft · 0.03 acres

Last Sale Tax Bill Prior Sale Owner Records
$45,000Apr 2000 $1,9882025 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated May 2026

122 Harmony St

3 bd · 1 ba · 886 sqft · 0.019 acres

Last Sale Tax Bill Prior Sale Owner Records
$335,000Nov 2023 $1,4032025 Amount on Record Jun 2023 1 Name on Record Owner Occupied Assessor + 6 DocumentsUpdated Jul 2026

123 Harmony St

3 bd · 1 ba · 1,496 sqft · 0.03 acres

Last Sale Tax Bill Prior Sale Owner Records
$200,000Jun 2005 $1,4612025 Amount on Record Jul 2001 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Apr 2026

124 Harmony St

3 bd · 1.5 ba · 1,108 sqft · 0.03 acres

Last Sale Tax Bill Prior Sale Owner Records
2 Names on Record AssessorUpdated Apr 2026

125 Harmony St

3 bd · 1 ba · 1,136 sqft · 0.03 acres

Last Sale Tax Bill Prior Sale Owner Records
$192,500Dec 2014 $1,5382025 Amount on Record Oct 2007 1 Name on Record Owner Occupied AssessorUpdated May 2026

126 Harmony St

3 bd · 1 ba · 1,212 sqft · 0.03 acres

Last Sale Tax Bill Prior Sale Owner Records
$337,000May 2019 $1,5452025 Amount on Record Jun 2013 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated May 2026

129 Harmony St

6 bd · 2.5 ba · 1,774 sqft · 0.06 acres

Last Sale Tax Bill Prior Sale Owner Records
—Nov 1997 $2,2532025 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Apr 2026

201 Harmony St

3 bd · 1 ba · 1,759 sqft · 0.03 acres

Last Sale Tax Bill Prior Sale Owner Records
$283,000Apr 2012 $1,7882025 Amount on Record Jun 2009 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Apr 2026

203 Harmony St

3 bd · 1.5 ba · 1,284 sqft · 0.019 acres

Last Sale Tax Bill Prior Sale Owner Records
$95,000Nov 1997 $1,0542025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated May 2026

205 Harmony St

3 bd · 1.5 ba · 1,820 sqft · 0.019 acres

Last Sale Tax Bill Prior Sale Owner Records
$110,000Apr 1989 $1,1792025 1 Name on Record Owner Occupied Assessor + 5 DocumentsUpdated May 2026

207 Harmony St

4 bd · 1 ba · 1,144 sqft · 0.019 acres

Last Sale Tax Bill Prior Sale Owner Records
$100,000Apr 2010 $1,5022025 Amount on Record Nov 2006 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Apr 2026

209 Harmony St

3 bd · 1 ba · 1,064 sqft · 0.019 acres

Last Sale Tax Bill Prior Sale Owner Records
$206,000Dec 2019 $1,4722025 —Mar 1988 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated May 2026

211 Harmony St

3 bd · 1 ba · 1,204 sqft · 0.019 acres

Last Sale Tax Bill Prior Sale Owner Records
$330,000Dec 2025 $1,3812025 Amount on Record Apr 2008 1 Name on Record Assessor + 2 DocumentsUpdated Apr 2026

213 Harmony St

4 bd · 1 ba · 1,284 sqft · 0.019 acres

Last Sale Tax Bill Prior Sale Owner Records
—Feb 2024 $1,5582025 Amount on Record Jul 2013 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

215 Harmony St

3 bd · 1 ba · 1,236 sqft · 0.019 acres

Last Sale Tax Bill Prior Sale Owner Records
$65,000Apr 1984 2 Names on Record Owner Occupied AssessorUpdated May 2026

217 Harmony St

3 bd · 1 ba · 1,046 sqft · 0.019 acres

Last Sale Tax Bill Prior Sale Owner Records
$141,000May 2002 $1,3252025 1 Name on Record Owner Occupied AssessorUpdated May 2026

219 Harmony St

4 bd · 1 ba · 1,120 sqft · 0.019 acres

Last Sale Tax Bill Prior Sale Owner Records
$242,000Jun 2024 $1,4352025 1 Name on Record Owner Occupied AssessorUpdated Apr 2026

221 Harmony St

4 bd · 2.5 ba · 1,601 sqft · 0.119 acres

Last Sale Tax Bill Prior Sale Owner Records
$370,000Aug 2009 1 Name on Record Owner Occupied AssessorUpdated Apr 2026

300 Harmony St

3 bd · 2.5 ba · 2,633 sqft · 0.089 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—Jan 2024 $2,4292025 Amount on Record Mar 2011 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

313 Harmony St

3 bd · 1 ba · 1,200 sqft · 0.05 acres

Last Sale Tax Bill Prior Sale Owner Records
$170,000Jan 2020 $1,3992025 Amount on Record Jun 2019 1 Name on Record Assessor + 2 DocumentsUpdated Apr 2026

315 Harmony St

4 bd · 2 ba · 1,612 sqft · 0.039 acres

Last Sale Tax Bill Prior Sale Owner Records
$338,000Aug 2019 $2,0312025 Amount on Record Jul 2009 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Apr 2026

409 Harmony St

4 bd · 1.5 ba · 1,536 sqft · 0.119 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$170,000Jan 2007 $1,5552025 1 Name on Record Owner Occupied AssessorUpdated May 2026

410 Harmony St

3 bd · 1 ba · 1,160 sqft · 0.069 acres

Last Sale Tax Bill Prior Sale Owner Records
$128,000Jul 2002 2 Names on Record Assessor + 1 DocumentUpdated Apr 2026

411 Harmony St

3 bd · 2 ba · 2,873 sqft · 0.139 acres

Last Sale Tax Bill Prior Sale Owner Records
$450,000Mar 2025 $1,9662025 Amount on Record Dec 2012 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Apr 2026

412 Harmony St

4 bd · 2 ba · 1,828 sqft · 0.069 acres

Last Sale Tax Bill Prior Sale Owner Records
—Oct 1985 2 Names on Record Owner Occupied AssessorUpdated May 2026

413 Harmony St

2 bd · 1 ba · 783 sqft · 0.119 acres

Last Sale Tax Bill Prior Sale Owner Records
$37,000Sep 1982 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated May 2026

515 Harmony St

39,443 sqft · Built 1950 · 9.13 acres

Last Sale Tax Bill Prior Sale Owner Records
1 Name on Record AssessorUpdated Apr 2026

516 Harmony St

5 bd · 2.5 ba · 1,136 sqft · 0.11 acres

Last Sale Tax Bill Prior Sale Owner Records
$55,000Aug 2002 $1,9122025 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated May 2026

518 Harmony St

3 bd · 1 ba · 1,472 sqft · 0.13 acres

Last Sale Tax Bill Prior Sale Owner Records
$2832025 1 Name on Record Owner Occupied AssessorUpdated May 2026

520 Harmony St

3 bd · 1 ba · 1,939 sqft · 0.219 acres

Last Sale Tax Bill Prior Sale Owner Records
2 Names on Record Owner Occupied AssessorUpdated May 2026

Wildfire Risk on Harmony St

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

Wildfire RiskLow
this street's cells rank at the 3rd percentile of exposed land nationally · 11th in Delaware
Wildfire LikelihoodLow — less than 1 in 10,000 per year
ExposureDirect
2 of 4 cells directly exposed · 2 adjoin burnable vegetation

Property Records in Nearby Streets