Old County Rd, Belmont, CA Property Records

San Mateo County property records for 90 addresses on Old County Rd, Belmont, CA · Last verified August 2026

Old County Rd Highlights

Properties 137
Median Sale Price $1,102,000
Deeds and Mortgages on File 197
Median Price per Sqft $725
Owner Occupied 45%
Median Annual Tax Bill $9,561
Median Year Built 1987
Median Ownership Tenure 16 years

Properties on Old County Rd

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

150 Old County Rd

1,783 sqft · Built 1954 · 0.069 acres

Last Sale Tax Bill Prior Sale Owner Records
$175,500May 1999 $5,4872025 2 Names on Record AssessorUpdated Jul 2026

184 Old County Rd

3,830 sqft · Built 1967 · 0.097 acres

Last Sale Tax Bill Prior Sale Owner Records
$4,1002025 —Oct 2010 2 Names on Record AssessorUpdated Jul 2026

200 Old County Rd

1,140 sqft · Built 1959 · 0.021 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$153,000Jan 1989 $4,9252025 —Oct 2010 2 Names on Record AssessorUpdated Jul 2026

201 Old County Rd

5,200 sqft · Built 1963 · 0.321 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$5,0172025 —Aug 1997 1 Name on Record AssessorUpdated Jul 2026
Last Sale Tax Bill Prior Sale Owner Records
$3,2052025 1 Name on Record AssessorUpdated Jul 2026

230 Old County Rd

0.05 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,8622025 —Dec 2014 2 Names on Record Assessor + 1 DocumentUpdated Jul 2026

250 Old County Rd

0.1 acres

Last Sale Tax Bill Prior Sale Owner Records
$951,000Dec 2022 $14,9672025 —Dec 2022 2 Names on Record Assessor + 4 DocumentsUpdated Aug 2026

260 Old County Rd

2,300 sqft · Built 1965 · 0.053 acres

Last Sale Tax Bill Prior Sale Owner Records
$7,3562025 1 Name on Record AssessorUpdated Jul 2026
Last Sale Tax Bill Prior Sale Owner Records
—Dec 2001 $11,6932025 1 Name on Record AssessorUpdated Jul 2026

301 Old County Rd

14 bd · 10 ba · 104,442 sqft · 2.97 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—May 2010 $192,2512025 1 Name on Record Assessor + 1 DocumentUpdated Aug 2026
Last Sale Tax Bill Prior Sale Owner Records
$5,8762025 2 Names on Record AssessorUpdated Jul 2026

319 Old County Rd

0.143 acres

Last Sale Tax Bill Prior Sale Owner Records
$275,000Dec 1998 $7,1412025 —Dec 1998 2 Names on Record Assessor + 1 DocumentUpdated Jul 2026

325 Old County Rd

1,440 sqft · Built 2009 · 0.286 acres

Last Sale Tax Bill Prior Sale Owner Records
$825,000Apr 2004 $16,7972025 Amount on Record Oct 1996 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

401 Old County Rd

3,574 sqft · Built 1980 · 0.143 acres

Last Sale Tax Bill Prior Sale Owner Records
$6,0852025 —Feb 2002 2 Names on Record Assessor + 1 DocumentUpdated Jul 2026

403 Old County Rd

3,554 sqft · Built 1980 · 0.143 acres

Last Sale Tax Bill Prior Sale Owner Records
$482,000Oct 2002 $9,9722025 Amount on Record Feb 1997 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

405 Old County Rd

3,570 sqft · Built 1983 · 0.143 acres

Last Sale Tax Bill Prior Sale Owner Records
$5,8872025 1 Name on Record Assessor + 6 DocumentsUpdated Aug 2026

407 Old County Rd

3,570 sqft · Built 1983 · 0.143 acres

Last Sale Tax Bill Prior Sale Owner Records
$11,2082025 1 Name on Record Assessor + 2 DocumentsUpdated Jul 2026

409 Old County Rd

3,570 sqft · Built 1983 · 0.143 acres

Last Sale Tax Bill Prior Sale Owner Records
$6,0002025 —May 2018 2 Names on Record Assessor + 3 DocumentsUpdated Jul 2026

411 Old County Rd

3,570 sqft · Built 1983 · 0.143 acres

Last Sale Tax Bill Prior Sale Owner Records
$307,000Jul 2017 $11,7812025 —Jun 2024 2 Names on Record Assessor + 3 DocumentsUpdated Aug 2026

415 Old County Rd

17,360 sqft · Built 1965 · 1.2 acres

Last Sale Tax Bill Prior Sale Owner Records
$20,7442025 1 Name on Record AssessorUpdated Jul 2026

425 Old County Rd, #501

24,400 sqft · Built 1973 · 1.03 acres

Last Sale Tax Bill Prior Sale Owner Records
$20,1842025 —Nov 2018 2 Names on Record Assessor + 1 DocumentUpdated Jul 2026

530 Old County Rd

0.08 acres

Last Sale Tax Bill Prior Sale Owner Records
$725,000Apr 2019 $3,8482025 —Apr 2019 1 Name on Record Owner Occupied Assessor + 8 DocumentsUpdated Aug 2026

621 Old County Rd

35 bd · 3 ba · 176,200 sqft · 4.71 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—Dec 2005 $778,3012025 —Sep 1994 1 Name on Record AssessorUpdated Aug 2026
Last Sale Tax Bill Prior Sale Owner Records
$89,000Nov 2017 $1,7192025 Amount on Record Aug 1994 2 Names on Record Assessor + 1 DocumentUpdated Jul 2026

707 Old County Rd

20 bd · 2 ba · 170,590 sqft · 8.57 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$368,1572025 1 Name on Record Assessor + 1 DocumentUpdated Aug 2026

748 Old County Rd

0.13 acres

Last Sale Tax Bill Prior Sale Owner Records
$870,000May 2019 $12,8012025 —Dec 2003 2 Names on Record Assessor + 3 DocumentsUpdated Jul 2026

752 Old County Rd

2,300 sqft · Built 1961 · 0.026 acres

Last Sale Tax Bill Prior Sale Owner Records
$750,000Apr 2019 $10,9232025 —Dec 2003 2 Names on Record Assessor + 3 DocumentsUpdated Jul 2026

760 Old County Rd

0.027 acres

Last Sale Tax Bill Prior Sale Owner Records
$165,000Mar 1988 $4,9282025 1 Name on Record Assessor + 1 DocumentUpdated Jul 2026

770 Old County Rd

1,715 sqft · Built 1951 · 0.058 acres

Last Sale Tax Bill Prior Sale Owner Records
$5,2762025 2 Names on Record Assessor + 1 DocumentUpdated Jul 2026

776 Old County Rd

0.029 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jul 1995 $4,4142025 2 Names on Record AssessorUpdated Jul 2026

780 Old County Rd

2,175 sqft · Built 1949 · 0.065 acres

Last Sale Tax Bill Prior Sale Owner Records
$735,000Dec 2022 $11,5812025 2 Names on Record Assessor + 1 DocumentUpdated Jul 2026

792 Old County Rd

0.038 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,6492025 1 Name on Record AssessorUpdated Jul 2026

794 Old County Rd

0.039 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,4962025 1 Name on Record AssessorUpdated Jul 2026

796 Old County Rd

1,550 sqft · Built 1949 · 0.036 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,4232025 1 Name on Record AssessorUpdated Jul 2026

800 Old County Rd

0.041 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,6972025 1 Name on Record AssessorUpdated Jul 2026

810 Old County Rd

3,383 sqft · Built 1955 · 0.078 acres

Last Sale Tax Bill Prior Sale Owner Records
$752,000Jun 2006 $13,2722025 —Jul 2007 1 Name on Record AssessorUpdated Jul 2026

815 Old County Rd, Apt 202

1 ba · 2,024 sqft · 1.74 acres

Last Sale Tax Bill Prior Sale Owner Records
$19,800,000Mar 2020 $1,475,6922025 Amount on Record Feb 2017 1 Name on Record Assessor + 1 DocumentUpdated Jul 2026

825 Old County Rd

0.8 acres

Last Sale Tax Bill Prior Sale Owner Records
$475,000Sep 1992 $31,2932025 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

830 Old County Rd

2,450 sqft · Built 1948 · 0.082 acres

Last Sale Tax Bill Prior Sale Owner Records
$900,000Aug 2019 $12,8542025 1 Name on Record Assessor + 1 DocumentUpdated Jul 2026

840 Old County Rd

1,924 sqft · Built 1981 · 0.047 acres

Last Sale Tax Bill Prior Sale Owner Records
$245,000Jun 1997 $5,9542025 —Feb 2001 1 Name on Record Assessor + 1 DocumentUpdated Jul 2026

844 Old County Rd

1,311 sqft · Built 1952 · 0.03 acres

Last Sale Tax Bill Prior Sale Owner Records
$517,500Jul 2019 $7,7302025 —Dec 2003 2 Names on Record Assessor + 2 DocumentsUpdated Jul 2026

847 Old County Rd

5,339 sqft · Built 1962 · 0.238 acres

Last Sale Tax Bill Prior Sale Owner Records
$8,0912025 2 Names on Record AssessorUpdated Jul 2026

849 Old County Rd

560 sqft · Built 1959 · 0.231 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,5462025 —Jul 2020 2 Names on Record Assessor + 3 DocumentsUpdated Jul 2026

850 Old County Rd

6,000 sqft · Built 1982 · 0.055 acres

Last Sale Tax Bill Prior Sale Owner Records
$883,000Feb 2006 $16,4112025 —Feb 2006 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

851 Old County Rd

2 bd · 1 ba · 1,130 sqft · 0.286 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$44,000Jun 1998 $6,1732025 —Dec 2017 2 Names on Record Assessor + 2 DocumentsUpdated Aug 2026

856 Old County Rd

2,000 sqft · Built 1947 · 0.048 acres

Last Sale Tax Bill Prior Sale Owner Records
$625,000Sep 2015 $9,9782025 Amount on Record Feb 2001 1 Name on Record AssessorUpdated Jul 2026

860 Old County Rd

2,000 sqft · Built 1965 · 0.06 acres

Last Sale Tax Bill Prior Sale Owner Records
$386,000May 2010 $7,0122025 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

870 Old County Rd

2,042 sqft · Built 1953 · 0.086 acres

Last Sale Tax Bill Prior Sale Owner Records
$212,500Jul 1995 $5,4532025 1 Name on Record Assessor + 1 DocumentUpdated Jul 2026

880 Old County Rd

3,016 sqft · Built 1950 · 0.092 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,570,000Jun 2018 $27,9512025 Amount on Record May 2015 1 Name on Record Assessor + 5 DocumentsUpdated Jul 2026

935 Old County Rd

48 units · Built 1992 · 1,054 sq ft

Last Sale Median Tax Bill Median Sale    
$1,150,000Nov 2024 $8,9042025 $1,075,00048 units    

940 Old County Rd

2,350 sqft · Built 1960 · 0.165 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,510,000Jun 2025 $24,6282025 Amount on Record Apr 2017 1 Name on Record Assessor + 3 DocumentsUpdated Jul 2026

951 Old County Rd

6,140 sqft · Built 1987 · 0.347 acres

Last Sale Tax Bill Prior Sale Owner Records
$5,000,000Mar 2025 $21,4392025 1 Name on Record AssessorUpdated Jul 2026

1001 Old County Rd

2,495 sqft · Built 2018 · 0.754 acres

Last Sale Tax Bill Prior Sale Owner Records
$495,054Apr 1997 $69,9622025 2 Names on Record Assessor + 4 DocumentsUpdated Jul 2026

1010 Old County Rd

0.085 acres

Last Sale Tax Bill Prior Sale Owner Records
—Oct 2025 $2492025 —Jan 1995 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

1020 Old County Rd

0.088 acres

Last Sale Tax Bill Prior Sale Owner Records
$116,000Nov 1981 $4,6962025 1 Name on Record Owner Occupied AssessorUpdated Jul 2026
Last Sale Tax Bill Prior Sale Owner Records
$750,000Dec 2006 2 Names on Record Owner Occupied AssessorUpdated Jun 2023

1060 Old County Rd

0.083 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,7332025 2 Names on Record Assessor + 1 DocumentUpdated Jul 2026

1075 Old County Rd

22,416 sqft · Built 1983 · 0.998 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,225,000Aug 2004 $58,3512025 Amount on Record Nov 1996 1 Name on Record AssessorUpdated Jul 2026

1080 Old County Rd

3,180 sqft · Built 1954 · 0.073 acres

Last Sale Tax Bill Prior Sale Owner Records
$350,000Dec 2004 $7,6952025 —May 2010 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

1110 Old County Rd

0.158 acres

Last Sale Tax Bill Prior Sale Owner Records
$735,000Oct 2015 $11,2472025 Amount on Record Aug 2015 1 Name on Record AssessorUpdated Jul 2026

1140 Old County Rd

0.13 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,150,000Dec 2015 $17,7792025 —Sep 2012 1 Name on Record Assessor + 1 DocumentUpdated Aug 2026

1141 Old County Rd

12,500 sqft · 0.534 acres

Last Sale Tax Bill Prior Sale Owner Records
$7,000,000Jun 2022 $88,7382025 2 Names on Record Assessor + 3 DocumentsUpdated Jul 2026

1150 Old County Rd

0.122 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,500,000Aug 2025 $5,5132025 —Jan 2019 1 Name on Record Owner Occupied Assessor + 5 DocumentsUpdated Jul 2026

1160 Old County Rd

0.173 acres

Last Sale Tax Bill Prior Sale Owner Records
$142,000Mar 1996 $7,3442025 —Mar 1996 2 Names on Record AssessorUpdated Jul 2026

1161 Old County Rd

8,812 sqft · Built 1960 · 0.285 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,000,000Aug 2004 $19,2222025 —Jun 2024 1 Name on Record Assessor + 3 DocumentsUpdated Aug 2026

1180 Old County Rd

1 bd · 1.5 ba · 1,365 sqft · 0.05 acres

Last Sale Tax Bill Prior Sale Owner Records
$300,000Jun 2001 $7,6492025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

1201 Old County Rd

8,642 sqft · Built 1976 · 0.308 acres

Last Sale Tax Bill Prior Sale Owner Records
$8,8362025 1 Name on Record Assessor + 4 DocumentsUpdated Jul 2026

1250 Old County Rd

4,788 sqft · 0.268 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,850,000Nov 2024 $36,7162025 —Jul 2023 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

1290 Old County Rd

8,320 sqft · Built 1954 · 0.211 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,200,000Mar 2008 $22,0112025 —Mar 2008 2 Names on Record AssessorUpdated Jul 2026

1297 Old County Rd

19,000 sqft · Built 1952 · 1.02 acres

Last Sale Tax Bill Prior Sale Owner Records
$830,000Jul 1992 $21,2702025 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

1300 Old County Rd

0.248 acres

Last Sale Tax Bill Prior Sale Owner Records
$14,7752025 —Dec 2012 2 Names on Record AssessorUpdated Jul 2026

1306 Old County Rd

6,975 sqft · Built 1947 · 0.157 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,925,000Aug 2016 $33,0812025 —Aug 2016 2 Names on Record Assessor + 3 DocumentsUpdated Jul 2026

1314 Old County Rd

3,887 sqft · Built 1953 · 0.14 acres

Last Sale Tax Bill Prior Sale Owner Records
$675,000Apr 2013 $12,2702025 Amount on Record Jun 1999 1 Name on Record Assessor + 1 DocumentUpdated Jul 2026

1318 Old County Rd

0.036 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,3642025 —Oct 2013 1 Name on Record AssessorUpdated Jul 2026

1320 Old County Rd

1,092 sqft · Built 1948 · 0.034 acres

Last Sale Tax Bill Prior Sale Owner Records
$400,000Oct 2014 $6,8652025 Amount on Record Sep 2011 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

1324 Old County Rd

0.096 acres

Last Sale Tax Bill Prior Sale Owner Records
—Apr 2002 $13,1532025 —Jul 1994 1 Name on Record Owner Occupied AssessorUpdated Feb 2026

1325 Old County Rd

2,024 sqft · Built 1971 · 2.06 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,800,000Dec 2017 $2,429,4152025 1 Name on Record Assessor + 5 DocumentsUpdated Aug 2026

1329 Old County Rd

5,000 sqft · Built 1963 · 0.161 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,500,000Dec 2011 $11,7182025 1 Name on Record AssessorUpdated Aug 2026

1335 Old County Rd, #1339

5,000 sqft · Built 1963 · 0.162 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,500,000Dec 2011 $11,7182025 1 Name on Record AssessorUpdated Aug 2026

1337 Old County Rd

108,528 sqft · Built 2007 · 0.985 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,744,000Apr 2005 $170,9582025 1 Name on Record Assessor + 1 DocumentUpdated Jul 2026

1345 Old County Rd

7,507 sqft · 0.255 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,905,000Apr 2019 $36,5182025 Amount on Record Apr 2005 1 Name on Record Assessor + 2 DocumentsUpdated Jul 2026

1350 Old County Rd

0.538 acres

Last Sale Tax Bill Prior Sale Owner Records
$4,6062025 —Feb 2018 2 Names on Record Assessor + 3 DocumentsUpdated Aug 2026

1404 Old County Rd

6,812 sqft · Built 1970 · 0.226 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,700,000Dec 2020 $34,5592025 Amount on Record Mar 2004 1 Name on Record Assessor + 2 DocumentsUpdated Jul 2026

1406 Old County Rd

6,830 sqft · Built 1965 · 0.188 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,325,000Sep 2015 $19,3312025 —Apr 2010 1 Name on Record AssessorUpdated Jul 2026

1410 Old County Rd

0.14 acres

Last Sale Tax Bill Prior Sale Owner Records
$15,1422025 —Jul 2018 2 Names on Record Assessor + 3 DocumentsUpdated Jul 2026

1421 Old County Rd

30,850 sqft · Built 1951 · 1.8 acres

Last Sale Tax Bill Prior Sale Owner Records
$14,4932025 1 Name on Record Assessor + 4 DocumentsUpdated Aug 2026

1438 Old County Rd

6,678 sqft · Built 1947 · 0.18 acres

Last Sale Tax Bill Prior Sale Owner Records
$755,000May 1998 $13,8892025 —May 1998 2 Names on Record AssessorUpdated Jul 2026

1440 Old County Rd

742 sqft · Built 1945 · 0.051 acres

Last Sale Tax Bill Prior Sale Owner Records
$150,000Mar 1996 $2,5192025 Amount on Record Dec 1995 2 Names on Record AssessorUpdated Jul 2026

1500 Old County Rd

4,424 sqft · Built 1964 · 0.118 acres

Last Sale Tax Bill Prior Sale Owner Records
$430,000Oct 1997 $8,7982025 —Oct 1999 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

1510 Old County Rd

3,600 sqft · 3 acres

Last Sale Tax Bill Prior Sale Owner Records
$300,000Dec 1994 $7,2712025 —Sep 2015 2 Names on Record AssessorUpdated Aug 2026

Wildfire Risk on Old County Rd

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