Sinclair Ave, Upland, CA Property Records

San Bernardino County property records for 31 addresses on Sinclair Ave, Upland, CA · Last verified July 2026

Sinclair Ave Highlights

Properties 70
Median Sale Price $328,000
Deeds and Mortgages on File 83
Median Price per Sqft $386
Owner Occupied 40%
Median Annual Tax Bill $2,133
Median Year Built 1971
Median Ownership Tenure 15 years

Properties on Sinclair Ave

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

104 Sinclair Ave

4 units · Built 1971 · 810 sq ft

Last Sale Median Tax Bill Median Sale    
$160,000May 2015 $3,2912025 $215,0004 units    

114 Sinclair Ave

4 units · Built 1971 · 810 sq ft

Last Sale Median Tax Bill Median Sale    
$380,000Aug 2024 $4,2772025 $360,0004 units    

119 Sinclair Ave

4 units · Built 1971 · 810 sq ft

Last Sale Median Tax Bill Median Sale    
$385,000Mar 2025 $2,0272025 $177,5004 units    

124 Sinclair Ave

4 units · Built 1971 · 810 sq ft

Last Sale Median Tax Bill Median Sale    
$269,000Aug 2018 $3,0022025 $225,0004 units    

129 Sinclair Ave

4 units · Built 1971 · 810 sq ft

Last Sale Median Tax Bill Median Sale    
$75,000Sep 2010 $1,3072025 $80,0004 units    

134 Sinclair Ave

4 units · Built 1971 · 810 sq ft

Last Sale Median Tax Bill Median Sale    
$265,000Jan 2021 $2,9202025 $229,0004 units    

139 Sinclair Ave

4 units · Built 1971 · 810 sq ft

Last Sale Median Tax Bill Median Sale    
$325,000Feb 2022 $3,9002025 $325,0004 units    

144 Sinclair Ave

4 units · Built 1971 · 810 sq ft

Last Sale Median Tax Bill Median Sale    
$328,000Jan 2023 $2,1332025 —4 units    

154 Sinclair Ave

4 units · Built 1971 · 810 sq ft

Last Sale Median Tax Bill Median Sale    
$326,500Sep 2022 $3,7302025 $310,0004 units    

164 Sinclair Ave

4 units · Built 1971 · 810 sq ft

Last Sale Median Tax Bill Median Sale    
$300,000Jun 2021 $2,7132025 $210,0004 units    

174 Sinclair Ave

4 units · Built 1971 · 810 sq ft

Last Sale Median Tax Bill Median Sale    
$305,000Sep 2021 $2,8732025 $219,0004 units    

184 Sinclair Ave

4 units · Built 1971 · 810 sq ft

Last Sale Median Tax Bill Median Sale    
$135,000Feb 2013 $1,6262025 $75,0004 units    

194 Sinclair Ave

4 units · Built 1971 · 810 sq ft

Last Sale Median Tax Bill Median Sale    
$315,000Aug 2021 $2,9812025 $237,0004 units    

217 Sinclair Ave

2 bd · 1 ba · 969 sqft · 0.022 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$321,000Dec 2020 $3,9282025 Sale Amount Nov 2018 1 Name on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

219 Sinclair Ave

2 bd · 1 ba · 969 sqft · 0.022 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$86,500Aug 2001 $1,4952025 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

221 Sinclair Ave

2 bd · 1 ba · 969 sqft · 0.022 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$183,000Dec 2016 $2,4782025 Sale Amount Mar 1995 1 Name on Record Assessor + 3 DocumentsUpdated Jul 2026

223 Sinclair Ave

2 bd · 1 ba · 969 sqft · 0.022 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$70,000Apr 1994 $1,4762025 —Apr 1994 1 Name on Record AssessorUpdated Jul 2026

225 Sinclair Ave

2 bd · 1 ba · 969 sqft · 0.022 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$7252025 1 Name on Record AssessorUpdated Jul 2026

227 Sinclair Ave

2 bd · 1 ba · 969 sqft · 0.022 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$180,000Feb 2015 $2,5212025 Sale Amount Aug 2014 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

229 Sinclair Ave

2 bd · 2 ba · 1,125 sqft · 0.025 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$115,000Apr 2011 $1,7802025 Sale Amount Jun 2006 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

231 Sinclair Ave

3 bd · 2 ba · 1,125 sqft · 0.025 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$478,000Nov 2023 $5,3562025 —May 1999 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

233 Sinclair Ave

3 bd · 2 ba · 1,125 sqft · 0.025 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$100,000Sep 2002 $1,6782025 —Sep 2002 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

235 Sinclair Ave

3 bd · 2 ba · 1,125 sqft · 0.025 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$355,000Jan 2021 $4,3232025 Sale Amount Jul 2018 1 Name on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

247 Sinclair Ave

2 bd · 1 ba · 957 sqft · 0.021 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$412,500Nov 2025 $1,8522025 Sale Amount Dec 2008 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

249 Sinclair Ave

2 bd · 1 ba · 957 sqft · 0.021 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$78,000Dec 1994 $1,6152025 Sale Amount Jul 1994 1 Name on Record AssessorUpdated Jul 2026

275 Sinclair Ave

4 bd · 3 ba · 6,486 sqft · 0.417 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—Jul 2006 $14,0562025 Sale Amount Mar 1996 1 Name on Record Assessor + 2 DocumentsUpdated Jul 2026

297 Sinclair Ave

4 bd · 3 ba · 6,486 sqft · 0.449 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$14,0562025 1 Name on Record Assessor + 2 DocumentsUpdated Jul 2026

321 Sinclair Ave

18 bd · 12 ba · 12,972 sqft · 0.449 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,000,000Feb 2014 $13,4082025 —Aug 2003 1 Name on Record Assessor + 1 DocumentUpdated Jul 2026

341 Sinclair Ave

4 bd · 2.5 ba · 6,486 sqft · 0.449 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,180,000Aug 2005 $17,5592025 —Nov 2015 1 Name on Record Assessor + 2 DocumentsUpdated Jul 2026

367 Sinclair Ave

6.5 ba · 6,486 sqft · 0.449 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$302,000Apr 1994 $14,0562025 Sale Amount Dec 1993 1 Name on Record Assessor + 2 DocumentsUpdated Jul 2026

387 Sinclair Ave

6.5 ba · 6,486 sqft · 0.382 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
—Oct 1996 $14,0562025 Sale Amount Apr 1994 1 Name on Record Assessor + 2 DocumentsUpdated Jul 2026

Property Records in Nearby Streets