Mountain Ave, Piedmont, CA Property Records

Alameda County property records for 74 addresses on Mountain Ave, Piedmont, CA · Last verified August 2026

Mountain Ave Highlights

Properties 74
Median Sale Price $3,650,000
Deeds and Mortgages on File 129
Median Price per Sqft $1,032
Owner Occupied 93%
Median Annual Tax Bill $30,436
Median Year Built 1927
Median Ownership Tenure 13 years

Properties on Mountain Ave

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

146 Mountain Ave

3 bd · 2.5 ba · 2,490 sqft · 0.114 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$8,0202025 —Jul 1994 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

150 Mountain Ave

4 bd · 1.5 ba · 1,480 sqft · 0.08 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$460,000Aug 1996 $14,4232025 —Jul 2003 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

151 Mountain Ave

4 bd · 4 ba · 2,234 sqft · 0.078 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$625,000Jun 1999 $23,8442025 —Dec 2012 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2025

154 Mountain Ave

4 bd · 2.5 ba · 1,974 sqft · 0.089 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,875,000Nov 2024 $28,0352025 —Jul 2024 2 Names on Record Owner Occupied AssessorUpdated Aug 2026

158 Mountain Ave

2 bd · 2 ba · 1,956 sqft · 0.082 acres

Last Sale Tax Bill Prior Sale Owner Records
$7,5302025 —Apr 1994 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

162 Mountain Ave

4 bd · 3 ba · 2,160 sqft · 0.094 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$879,000Jul 2004 $20,6242025 —Sep 2005 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2025

163 Mountain Ave

4 bd · 2 ba · 1,599 sqft · 0.063 acres

Last Sale Tax Bill Prior Sale Owner Records
$502,500Jan 2021 $18,2732025 Amount on Record May 2004 2 Names on Record Owner Occupied Assessor + 6 DocumentsUpdated Aug 2026

172 Mountain Ave

4 bd · 2.5 ba · 2,011 sqft · 0.089 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$2,900,000Mar 2022 $36,5252025 Amount on Record Nov 2017 2 Names on Record Owner Occupied Assessor + 4 DocumentsUpdated Aug 2026

173 Mountain Ave

6 bd · 2.5 ba · 3,274 sqft · 0.141 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$3,860,000May 2021 $51,2892025 Amount on Record May 2011 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

175 Mountain Ave

4 bd · 4 ba · 3,418 sqft · 0.189 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$1,580,000Sep 2002 $34,6272025 —May 2020 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2025

180 Mountain Ave

4 bd · 3.5 ba · 2,285 sqft · 0.095 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,275,000Jul 2002 $28,0192025 Amount on Record May 2000 1 Name on Record Owner Occupied Assessor + 6 DocumentsUpdated Aug 2026

188 Mountain Ave

3 bd · 4 ba · 2,863 sqft · 0.106 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,980,000Mar 2024 $42,1372025 —Jun 1995 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2025

191 Mountain Ave

6 bd · 4.5 ba · 3,343 sqft · 0.257 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—Jul 1991 $21,8672025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

196 Mountain Ave

3 bd · 2.5 ba · 2,271 sqft · 0.092 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$632,000Sep 1993 $18,6532025 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

198 Mountain Ave

4 bd · 1.5 ba · 2,006 sqft · 0.059 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$7,0652025 —Mar 1999 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

201 Mountain Ave

2 bd · 2 ba · 1,694 sqft · 0.149 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,239,000Oct 2013 $24,9542025 1 Name on Record Assessor + 1 DocumentUpdated Oct 2025

206 Mountain Ave

3 bd · 2 ba · 3,164 sqft · 0.134 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,635,000Jun 2005 $33,5942025 —Sep 2014 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2025

212 Mountain Ave

3 bd · 3 ba · 3,021 sqft · 0.358 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,495,000Jan 2025 $57,3872025 Amount on Record Jun 2021 2 Names on Record Owner Occupied Assessor + 4 DocumentsUpdated Jun 2026

213 Mountain Ave

5 bd · 5 ba · 3,818 sqft · 0.229 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$3,900,000Feb 2021 $57,4962025 —May 2016 3 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2025

220 Mountain Ave

5 bd · 3.5 ba · 3,579 sqft · 0.189 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$3,000,000Oct 2019 $44,4912024 Amount on Record Oct 2004 1 Name on Record Assessor + 5 DocumentsUpdated Apr 2026

221 Mountain Ave

5 bd · 4 ba · 4,509 sqft · 0.234 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$3,500,000Feb 2018 $54,9372025 —Mar 2013 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2025

224 Mountain Ave

6 bd · 5.5 ba · 5,135 sqft · 0.203 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$7,500,000Apr 2026 $52,4462025 Amount on Record Nov 2013 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

229 Mountain Ave

5 bd · 2.5 ba · 2,876 sqft · 0.228 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$675,000Jun 1996 $20,6222025 —Jun 1996 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

235 Mountain Ave

5 bd · 4.5 ba · 5,337 sqft · 0.461 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$5,225,000May 2021 $78,8612025 Amount on Record Apr 2015 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

247 Mountain Ave

6 bd · 5 ba · 4,158 sqft · 0.33 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$2,765,000Aug 2013 $47,7662025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2025

255 Mountain Ave

5 bd · 4 ba · 4,589 sqft · 0.369 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$5,300,000Sep 2021 $74,7232025 3 Names on Record Owner Occupied Assessor + 4 DocumentsUpdated Oct 2025

270 Mountain Ave

3 bd · 4 ba · 2,822 sqft · 0.234 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$3,700,000Oct 2023 $49,1522025 Amount on Record Oct 2017 3 Names on Record Owner Occupied Assessor + 5 DocumentsUpdated Oct 2025

280 Mountain Ave

7 bd · 4.5 ba · 5,610 sqft · 0.356 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$1,080,000Oct 1996 $29,5502025 Amount on Record Mar 1996 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

284 Mountain Ave

6 bd · 5 ba · 6,685 sqft · 0.441 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$5,650,000Oct 2015 $91,5452025 —Mar 2015 1 Name on Record AssessorUpdated Oct 2025

300 Mountain Ave

4 bd · 5.5 ba · 4,420 sqft · 0.272 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$3,200,000Apr 2026 $13,5412025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

305 Mountain Ave

4 bd · 4 ba · 3,382 sqft · 0.18 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$2,800,000May 2019 $43,6672025 —May 2019 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

309 Mountain Ave

5 bd · 4 ba · 3,107 sqft · 0.232 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$2,100,000Jul 2013 $42,3182025 —Jun 2023 1 Name on Record Owner Occupied Assessor + 7 DocumentsUpdated Oct 2025

311 Mountain Ave

2 bd · 2.5 ba · 2,181 sqft · 0.156 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$632,000Jul 1991 $9,2312025 —Jan 2022 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

312 Mountain Ave

7 bd · 4 ba · 5,250 sqft · 0.718 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$13,3372025 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

315 Mountain Ave

5 bd · 4 ba · 4,658 sqft · 0.334 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,000,000Aug 1998 $15,0462025 —Aug 1998 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

319 Mountain Ave

4 bd · 3.5 ba · 2,205 sqft · 0.224 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$2,475,000Dec 2020 $37,8362025 Amount on Record Sep 2013 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

321 Mountain Ave

5 bd · 5.5 ba · 7,495 sqft · 1.15 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$81,7532025 1 Name on Record AssessorUpdated Aug 2026

335 Mountain Ave

5 bd · 6 ba · 7,395 sqft · 0.409 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$6,250,000Oct 2007 $106,5362025 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Oct 2025

336 Mountain Ave

3 bd · 4 ba · 3,716 sqft · 0.343 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$3,800,000May 2025 $29,0882025 3 Names on Record AssessorUpdated Oct 2025

350 Mountain Ave

4 bd · 5 ba · 3,125 sqft · 0.192 acres · Pool

Last Sale Tax Bill Prior Sale Owner Records
$1,510,000May 2001 $33,5312025 —Sep 2011 1 Name on Record Owner Occupied AssessorUpdated Oct 2025

352 Mountain Ave

6 bd · 4 ba · 4,850 sqft · 0.178 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,785,000Feb 2012 $34,0022025 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Oct 2025

354 Mountain Ave

4 bd · 4 ba · 2,927 sqft · 0.156 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$560,000Oct 1989 $12,8682025 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

356 Mountain Ave

4 bd · 4 ba · 3,293 sqft · 0.181 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$3,400,000Jul 2025 $30,4362025 —Jan 2005 2 Names on Record Owner Occupied AssessorUpdated Oct 2025

360 Mountain Ave

7 bd · 6 ba · 5,463 sqft · 0.326 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$3,600,000May 2018 $56,7612025 3 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2025

415 Mountain Ave

5 bd · 7 ba · 5,117 sqft · 0.702 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$5,500,000Jun 2019 $81,2812025 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2025

430 Mountain Ave

2 bd · 3 ba · 2,428 sqft · 0.285 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,456,000Jul 2012 $28,9882025 —Jul 2012 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2025

444 Mountain Ave

5 bd · 4 ba · 4,523 sqft · 0.499 acres

Last Sale Tax Bill Prior Sale Owner Records
$4,515,000Nov 2024 $13,7012025 —Sep 2024 2 Names on Record Owner Occupied AssessorUpdated Aug 2026

445 Mountain Ave

7 bd · 7 ba · 8,040 sqft · 0.664 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$4,091,000Jun 2013 $78,1712025 —Dec 2012 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

449 Mountain Ave

3 bd · 4 ba · 2,451 sqft · 0.206 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$3,450,000Sep 2021 $23,3482025 Amount on Record Aug 2019 3 Names on Record Owner Occupied Assessor + 4 DocumentsUpdated Oct 2025

453 Mountain Ave

4 bd · 2 ba · 2,318 sqft · 0.172 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$8,6112025 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

455 Mountain Ave

4 bd · 4 ba · 2,911 sqft · 0.126 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,550,000Nov 2010 $30,8932025 1 Name on Record Owner Occupied AssessorUpdated Oct 2025

457 Mountain Ave

4 bd · 3 ba · 2,470 sqft · 0.128 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,400,000May 2011 $29,4742025 1 Name on Record Owner Occupied AssessorUpdated Oct 2025

459 Mountain Ave

3 bd · 4 ba · 2,910 sqft · 0.125 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$2,400,000Oct 2024 $35,8332025 3 Names on Record Owner Occupied AssessorUpdated Oct 2025

460 Mountain Ave

6 bd · 5 ba · 3,639 sqft · 0.316 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,000,000Aug 1993 $31,0662025 —Mar 2011 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2025

465 Mountain Ave

4 bd · 3.5 ba · 3,522 sqft · 0.176 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—Aug 1998 $16,5332025 —Apr 1998 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

470 Mountain Ave

4 bd · 3 ba · 2,974 sqft · 0.258 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$2,900,000Oct 2018 $47,1402025 —Oct 2018 1 Name on Record Owner Occupied Assessor + 4 DocumentsUpdated Aug 2026

471 Mountain Ave

4 bd · 4 ba · 4,894 sqft · 0.181 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,600,000Oct 2004 $34,7782025 —Dec 2012 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2025

475 Mountain Ave

3 bd · 5 ba · 3,060 sqft · 0.18 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,765,000Oct 2017 $30,4322025 1 Name on Record Owner Occupied Assessor + 5 DocumentsUpdated Oct 2025

479 Mountain Ave

4 bd · 2 ba · 3,957 sqft · 0.265 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$3,750,000Jun 2026 $16,9412025 2 Names on Record Owner Occupied Assessor + 4 DocumentsUpdated Aug 2026

480 Mountain Ave

4 bd · 4 ba · 3,260 sqft · 0.258 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$2,720,000Mar 2017 $46,6682025 1 Name on Record Owner Occupied Assessor + 4 DocumentsUpdated Oct 2025

490 Mountain Ave

3 bd · 1.5 ba · 2,274 sqft · 0.258 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$18,2582025 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

496 Mountain Ave

5 bd · 5 ba · 4,465 sqft · 0.265 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$3,650,000Aug 2021 $55,3482025 —Jun 2021 3 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Oct 2025

500 Mountain Ave

5 bd · 5 ba · 5,250 sqft · 0.246 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
—May 1997 $24,0162025 —May 1997 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

510 Mountain Ave

4 bd · 4 ba · 2,724 sqft · 0.24 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,215,000Sep 2002 $29,8952025 1 Name on Record Owner Occupied AssessorUpdated Oct 2025

550 Mountain Ave

4 bd · 3 ba · 2,998 sqft · 0.229 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$19,3532025 —Jul 2011 2 Names on Record Owner Occupied AssessorUpdated Aug 2026

551 Mountain Ave

4 bd · 4 ba · 4,030 sqft · 0.164 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$2,550,000Oct 2000 $49,1282025 —Apr 2002 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2025

560 Mountain Ave

2 bd · 2 ba · 1,929 sqft · 0.165 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$645,000Jan 1999 $19,5552025 —Jan 1999 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

570 Mountain Ave

3 bd · 2.5 ba · 2,082 sqft · 0.163 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$460,000Mar 1997 $16,8332025 —Aug 2001 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

580 Mountain Ave

3 bd · 3.5 ba · 2,988 sqft · 0.181 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,628,000Oct 2015 $30,9172025 —Oct 2015 1 Name on Record Owner Occupied Assessor + 4 DocumentsUpdated Aug 2026

585 Mountain Ave

4 bd · 3.5 ba · 2,839 sqft · 0.141 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$8,554Apr 2015 $21,3272025 Amount on Record Apr 2015 2 Names on Record Owner Occupied AssessorUpdated May 2026

586 Mountain Ave

4 bd · 4 ba · 2,256 sqft · 0.19 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$1,606,000Jun 2012 $31,7212025 —Jun 2010 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2025

588 Mountain Ave

4 bd · 3 ba · 2,971 sqft · 0.194 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$75,000Jan 1999 $19,3082025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2025

600 Mountain Ave

3 bd · 2 ba · 2,171 sqft · 0.214 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$9,9742025 —Nov 2013 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2025

601 Mountain Ave

4 bd · 3 ba · 3,218 sqft · 0.264 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$2,620,000Mar 2015 $47,0672025 —Feb 2002 2 Names on Record Owner Occupied AssessorUpdated Oct 2025

Wildfire Risk on Mountain Ave

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

Wildfire RiskLow
this street's cells rank above 1% of the US · above 1% of California
Wildfire LikelihoodLess than 1 in 10,000 per year
ExposureDirect
1 of 6 cells directly exposed · 3 adjoin burnable vegetation

Property Records in Nearby Streets