Walnut St, Boston, MA Property Records

Suffolk County and Boston City property records for 22 addresses on Walnut St, Boston, MA · Last verified July 2026

Walnut St Highlights

Properties 41
Median Sale Price $3,100,000
Deeds and Mortgages on File 43
Median Price per Sqft $1,434
Owner Occupied 41%
Median Annual Tax Bill $22,502
Median Year Built 1899
Median Ownership Tenure 9 years

Properties on Walnut St

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

1 Walnut St

13,248 sqft · Built 1899 · 0.073 acres

Last Sale Tax Bill Prior Sale Owner Records
$405,000Jan 1998 $107,9582024 1 Name on Record Assessor + 2 DocumentsUpdated Jul 2026

2 Walnut St

6,280 sqft · Built 1899 · 0.061 acres

Last Sale Tax Bill Prior Sale Owner Records
$7,300,000Jul 2025 $39,9352025 1 Name on Record Assessor + 2 DocumentsUpdated Jun 2026

3 Walnut St, Apt 5

3 bd · 2 ba · 1,706 sqft · 0.039 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,500,000Jun 2023 $37,3982025 Amount on Record Oct 2022 1 Name on Record Assessor + 2 DocumentsUpdated Jul 2026

4 Walnut St

7 units · Built 1870 · 423 sq ft

Last Sale Median Tax Bill Median Sale    
$989,000Aug 2002 $7,2702025 —7 units    

6 Walnut St

4 units · Built 1850 · 687 sq ft

Last Sale Median Tax Bill Median Sale    
$1,825,000May 2026 $18,4382025 $1,004,5004 units    

6 Walnut St

2,417 sqft · Built 1999 · 0.055 acres

Last Sale Tax Bill Prior Sale Owner Records
—Dec 2009 Amount on Record Apr 2006 1 Name on Record AssessorUpdated Apr 2026

7 Walnut St

4,450 sqft · Built 1900 · 0.026 acres

Last Sale Tax Bill Prior Sale Owner Records
$30,1292025 1 Name on Record AssessorUpdated Jul 2026

8 Walnut St

7,048 sqft · Built 1999 · 0.161 acres

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

8 Walnut St, #A

5 bd · 4.5 ba · 3,920 sqft · 0.089 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—Jul 2016 $81,0752025 Amount on Record Mar 2013 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

8 Walnut St, #B

3 bd · 3.5 ba · 3,095 sqft · 0.071 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$150,000Aug 2002 $53,8402025 Amount on Record Dec 2000 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

9 Walnut St

5 bd · 5 ba · 5,838 sqft · 0.034 acres

Last Sale Tax Bill Prior Sale Owner Records
$8,050,000Mar 2026 $91,5042025 Amount on Record Jul 2017 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

10 Walnut St

8 bd · 10.5 ba · 3,822 sqft · 0.087 acres

Last Sale Tax Bill Prior Sale Owner Records
$5,782,000Mar 2021 Amount on Record Nov 2020 1 Name on Record Assessor + 3 DocumentsUpdated Jul 2026

10 Walnut St

3 units · Built 1900 · 2,885 sq ft

Last Sale Median Tax Bill Median Sale    
$7,800,000Sep 2024 $68,7612025 —3 units    

11 Walnut St

4 bd · 5.5 ba · 4,185 sqft · 0.022 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,140,000Dec 2005 $67,2832025 Amount on Record Sep 1989 1 Name on Record Assessor + 4 DocumentsUpdated Jul 2026

12 Walnut St

5 units · Built 1860 · 646 sq ft

Last Sale Median Tax Bill Median Sale    
$765,000Sep 2024 $9,8352025 $857,0005 units    

12 Walnut St

1,481 sqft · Built 1999 · 0.033 acres

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

13 Walnut St

5 bd · 4.5 ba · 975 sqft · 0.022 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,600,000Sep 2016 —Sep 2015 1 Name on Record AssessorUpdated Jul 2026

13 Walnut St, #1

3 bd · 3.5 ba · 2,095 sqft · 0.022 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,100,000Mar 2025 $27,7502025 Amount on Record Mar 2020 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

13 Walnut St, #2

3 bd · 4 ba · 2,792 sqft · 0.022 acres

Last Sale Tax Bill Prior Sale Owner Records
$4,500,000Nov 2017 $56,3752025 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Apr 2026

14 Walnut St

6 bd · 8 ba · 7,121 sqft · 0.133 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$7,900,000Dec 2014 $133,9642025 Amount on Record Jan 1994 1 Name on Record Assessor + 1 DocumentUpdated Apr 2026

21 Walnut St

3,340 sqft · Built 1999 · 0.076 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,600,000Jun 2022 Amount on Record Aug 2019 1 Name on Record Assessor + 1 DocumentUpdated Jul 2026

35 Walnut St

5 units · Built 1899 · 1,271 sq ft

Last Sale Median Tax Bill Median Sale    
$1,761,000Jan 2023 $22,5022025 $1,699,0005 units    

Wildfire Risk on Walnut St

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

Wildfire Risk to HomesNot rated
no burnable land in reach
Wildfire LikelihoodNegligible
ExposureNone
beyond ember reach of burnable land

Property Records in Nearby Streets