Northern Ave, Mill Valley, CA Property Records

Marin County property records for 74 addresses on Northern Ave, Mill Valley, CA · Last verified August 2026

Northern Ave Highlights

Properties 74
Median Sale Price $1,815,000
Deeds and Mortgages on File 145
Median Price per Sqft $1,121
Owner Occupied 91%
Median Annual Tax Bill $21,270
Median Year Built 1953
Median Ownership Tenure 14 years

Properties on Northern Ave

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

507 Northern Ave

40 bd · 3.75 ba · 10,873 sqft · built 1962 · 0.351 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,760Jul 2024 $185,0992025 Amount on Record Dec 2019 2 Names on Record Assessor + 14 DocumentsUpdated Aug 2026

510 Northern Ave

4 bd · 2 ba · 1,405 sqft · built 1955 · 0.206 acres

Last Sale Tax Bill Prior Sale Owner Records
$690,000Mar 2006 $9,8292025 —Mar 2006 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

511 Northern Ave

2 bd · 2 ba · 1,236 sqft · built 1957 · 0.179 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,450,000Jun 2024 $35,2312025 Amount on Record Jun 2022 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

513 Northern Ave

5 bd · 4.5 ba · 3,295 sqft · built 2008 · 0.252 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,985,000Jun 2012 $34,9122025 Amount on Record Apr 2007 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

514 Northern Ave

3 bd · 3 ba · 3,058 sqft · built 1919 · 0.33 acres

Last Sale Tax Bill Prior Sale Owner Records
$428,000Jan 2008 $26,8982025 Amount on Record Mar 2000 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

517 Northern Ave

4 bd · 2.5 ba · 2,539 sqft · built 1918 · 0.459 acres

Last Sale Tax Bill Prior Sale Owner Records
$9,5902025 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

518 Northern Ave

2 bd · 1 ba · 872 sqft · built 1925 · 0.298 acres

Last Sale Tax Bill Prior Sale Owner Records
$7,2992025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

519 Northern Ave

4 bd · 4 ba · 2,432 sqft · built 1935 · 0.348 acres

Last Sale Tax Bill Prior Sale Owner Records
$340,000Oct 1996 $13,9142025 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

522 Northern Ave

3 bd · 3 ba · 2,274 sqft · built 1961 · 0.33 acres

Last Sale Tax Bill Prior Sale Owner Records
$500,000Apr 1995 $21,2652025 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

523 Northern Ave

5 bd · 4 ba · 3,736 sqft · built 2005 · 0.465 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,250,000Oct 2005 $41,3172025 Amount on Record Sep 2004 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

526 Northern Ave

4 bd · 3 ba · 2,900 sqft · built 1926 · 0.22 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,175,000Jun 2014 $33,9782025 Amount on Record Jul 2002 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

527 Northern Ave

4 bd · 1 ba · 1,400 sqft · built 1935 · 0.686 acres

Last Sale Tax Bill Prior Sale Owner Records
$5,2422025 —Sep 2001 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

528 Northern Ave

4 bd · 4 ba · 1,984 sqft · built 1950 · 0.275 acres

Last Sale Tax Bill Prior Sale Owner Records
$13,5362025 —Sep 1994 1 Name on Record AssessorUpdated Jul 2026

530 Northern Ave

4 bd · 2 ba · 1,821 sqft · built 1964 · 0.258 acres

Last Sale Tax Bill Prior Sale Owner Records
$7,5682025 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

534 Northern Ave

4 bd · 4 ba · 2,668 sqft · built 1942 · 0.241 acres

Last Sale Tax Bill Prior Sale Owner Records
$500,000May 2000 $17,7372025 Amount on Record Mar 1994 2 Names on Record AssessorUpdated Jul 2026

538 Northern Ave

5 bd · 3.5 ba · 3,394 sqft · built 2015 · 0.433 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,695,000Jul 2016 $43,3182025 Amount on Record Nov 2007 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

539 Northern Ave

3 bd · 2 ba · 1,642 sqft · built 1959 · 0.241 acres

Last Sale Tax Bill Prior Sale Owner Records
—Nov 2002 $7,9252025 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

540 Northern Ave

3 bd · 2.5 ba · 2,050 sqft · built 1997 · 0.247 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,525,000Jan 2021 $37,9772025 Amount on Record May 2018 2 Names on Record Owner Occupied Assessor + 5 DocumentsUpdated Aug 2026

541 Northern Ave

4 bd · 4 ba · 3,002 sqft · built 1960 · 0.218 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,450,000May 2022 $38,1832025 Amount on Record Aug 2016 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

543 Northern Ave

5 bd · 2 ba · 2,971 sqft · built 1960 · 0.206 acres

Last Sale Tax Bill Prior Sale Owner Records
$363,500Oct 1993 $13,1432025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

544 Northern Ave

3 bd · 2.5 ba · 1,778 sqft · built 1949 · 0.247 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,275,000Mar 2011 $23,7352025 Amount on Record Feb 2009 2 Names on Record AssessorUpdated Aug 2026

545 Northern Ave

4 bd · 3 ba · 2,512 sqft · built 1963 · 0.229 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,135,000Feb 2007 $23,2832025 —Feb 2007 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

546 Northern Ave

3 bd · 3 ba · 2,394 sqft · built 1949 · 0.247 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,100,000Feb 2021 $33,5432025 —Jan 2010 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

547 Northern Ave

4 bd · 3 ba · 1,838 sqft · built 1960 · 0.224 acres

Last Sale Tax Bill Prior Sale Owner Records
$755,000Jan 2009 $18,2262025 —Apr 2004 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

550 Northern Ave

3 bd · 2.5 ba · 2,589 sqft · built 2007 · 0.241 acres

Last Sale Tax Bill Prior Sale Owner Records
$960,000Jul 2007 $29,1222025 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

552 Northern Ave

2 bd · 2 ba · 1,944 sqft · built 1921 · 0.351 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,809,000May 2019 $31,1412025 Amount on Record Jun 1994 2 Names on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

554 Northern Ave

4 bd · 2 ba · 1,866 sqft · built 1925 · 0.223 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,400,000Sep 2021 $33,4172025 —May 2006 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

556 Northern Ave

3 bd · 2.5 ba · 2,199 sqft · built 1954 · 0.413 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,100,000Oct 2016 $34,0352025 Amount on Record Aug 2007 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

598 Northern Ave

4 bd · 3 ba · 2,091 sqft · built 1961 · 0.285 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,815,000Nov 2023 $27,7872025 Amount on Record Jun 2000 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

600 Northern Ave

4 bd · 4 ba · 3,485 sqft · built 1936 · 0.275 acres

Last Sale Tax Bill Prior Sale Owner Records
$535,000Sep 1996 $20,8992025 —Dec 2010 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

601 Northern Ave

3 bd · 3.5 ba · 3,172 sqft · built 1940 · 0.344 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,058,000Aug 2001 $31,2942025 Amount on Record Mar 1997 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

602 Northern Ave

3 bd · 3 ba · 2,567 sqft · built 1961 · 0.275 acres

Last Sale Tax Bill Prior Sale Owner Records
$8,2782025 —Dec 2002 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

604 Northern Ave

4 bd · 2 ba · 2,154 sqft · built 1952 · 0.282 acres

Last Sale Tax Bill Prior Sale Owner Records
$6,2592025 —Jul 2009 2 Names on Record Owner Occupied AssessorUpdated Aug 2026

605 Northern Ave

3 bd · 2 ba · 2,627 sqft · built 1968 · 0.282 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,160,000May 2010 $24,8352025 Amount on Record May 2000 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

606 Northern Ave

5 bd · 3 ba · 2,625 sqft · built 1948 · 0.275 acres

Last Sale Tax Bill Prior Sale Owner Records
$960,000Jul 2003 $21,6682025 —Jul 2003 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

607 Northern Ave

4 bd · 3 ba · 2,837 sqft · built 1946 · 0.464 acres

Last Sale Tax Bill Prior Sale Owner Records
$70,000Sep 1993 $13,8402025 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

609 Northern Ave

4 bd · 3.5 ba · 3,181 sqft · built 2008 · 0.283 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,710,000Dec 2010 $31,3552025 Amount on Record Jul 2007 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

611 Northern Ave

4 bd · 3 ba · 2,650 sqft · built 1976 · 0.21 acres

Last Sale Tax Bill Prior Sale Owner Records
$16,6562025 2 Names on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

615 Northern Ave

3 bd · 2 ba · 1,556 sqft · built 1948 · 0.413 acres

Last Sale Tax Bill Prior Sale Owner Records
$7,5752025 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

619 Northern Ave

3 bd · 2 ba · 1,444 sqft · built 1950 · 0.249 acres

Last Sale Tax Bill Prior Sale Owner Records
$7,1052025 —May 2010 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

624 Northern Ave

3 bd · 3.5 ba · 2,976 sqft · built 1952 · 0.391 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,785,000Aug 2010 $29,7032025 Amount on Record Apr 2001 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

625 Northern Ave

2 bd · 1.5 ba · 1,786 sqft · built 1951 · 0.258 acres

Last Sale Tax Bill Prior Sale Owner Records
$450,000Mar 2001 $12,5202025 —Jan 1997 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

626 Northern Ave

2 bd · 2 ba · 1,245 sqft · built 1953 · 0.223 acres

Last Sale Tax Bill Prior Sale Owner Records
$575,000Sep 1998 $16,5292025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

627 Northern Ave

3 bd · 2.5 ba · 2,279 sqft · built 1953 · 0.227 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,450,000Jul 2013 $27,4302025 Amount on Record Feb 2012 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

629 Northern Ave

4 bd · 3 ba · 2,444 sqft · built 1953 · 0.266 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,545,500Jun 2025 $30,4662025 Amount on Record Jan 2005 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

630 Northern Ave

4 bd · 3 ba · 1,964 sqft · built 1952 · 0.183 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,250,000Jun 2015 $35,8062025 Amount on Record Nov 2014 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

631 Northern Ave

3 bd · 1 ba · 1,153 sqft · built 1953 · 0.249 acres

Last Sale Tax Bill Prior Sale Owner Records
$7,3772025 —Nov 1996 1 Name on Record AssessorUpdated Jul 2026

632 Northern Ave

3 bd · 2.5 ba · 2,324 sqft · built 2019 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,200,000May 2017 $34,1142025 2 Names on Record Assessor + 4 DocumentsUpdated Jul 2026

634 Northern Ave

4 bd · 3.5 ba · 1,919 sqft · built 1951 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$287,500Jan 2026 $12,4152025 Amount on Record Jan 2004 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

635 Northern Ave

4 bd · 4 ba · 3,483 sqft · built 2009 · 0.477 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,295,000Apr 2012 $39,3632025 Amount on Record Jul 2007 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

637 Northern Ave

3 bd · 2.5 ba · 2,275 sqft · built 1946 · 0.252 acres

Last Sale Tax Bill Prior Sale Owner Records
$339,000Nov 1993 $17,7052025 —Aug 1998 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

638 Northern Ave

3 bd · 1 ba · 1,365 sqft · built 1951 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$133,000Mar 2010 $7,6742025 —Mar 2007 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

639 Northern Ave

3 bd · 2 ba · 1,508 sqft · built 1953 · 0.23 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,100,000Feb 2020 $19,1682025 —Jan 2010 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

640 Northern Ave

3 bd · 1 ba · 1,295 sqft · built 1948 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$4,9952025 —Jun 1994 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

642 Northern Ave

2 bd · 2 ba · 1,271 sqft · built 1948 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,380,000Sep 2018 $23,6132025 Amount on Record Mar 2018 2 Names on Record Owner Occupied Assessor + 6 DocumentsUpdated Jul 2026

643 Northern Ave

3 bd · 2 ba · 1,978 sqft · built 1972 · 0.268 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,755,000Dec 2018 $28,9462025 Amount on Record Jul 2000 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

645 Northern Ave

4 bd · 3 ba · 2,046 sqft · built 1939 · 0.238 acres

Last Sale Tax Bill Prior Sale Owner Records
$700,000Aug 2002 $18,9052025 2 Names on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

647 Northern Ave

2 bd · 1 ba · 1,189 sqft · built 1940 · 0.223 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,400,000Nov 2025 $5,3012025 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

649 Northern Ave

2 bd · 1 ba · 1,124 sqft · built 1947 · 0.283 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,750,000Mar 2025 $27,5122025 Amount on Record Apr 2021 2 Names on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

651 Northern Ave

4 bd · 4.5 ba · 3,212 sqft · built 1946 · 0.482 acres

Last Sale Tax Bill Prior Sale Owner Records
$278,235May 1993 $21,3062025 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

652 Northern Ave

1 bd · 1 ba · 864 sqft · built 1927 · 0.275 acres

Last Sale Tax Bill Prior Sale Owner Records
$21,8182025 —Feb 2025 1 Name on Record Owner Occupied Assessor + 5 DocumentsUpdated Aug 2026

654 Northern Ave

3 bd · 2.5 ba · 2,139 sqft · built 1979 · 0.344 acres

Last Sale Tax Bill Prior Sale Owner Records
$630,000Oct 1998 $17,8032025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

656 Northern Ave

3 bd · 3.5 ba · 2,945 sqft · built 1979 · 0.321 acres

Last Sale Tax Bill Prior Sale Owner Records
$13,2442025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

658 Northern Ave

4 bd · 3 ba · 2,394 sqft · built 1980 · 0.344 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,630,000Mar 2018 $27,3552025 Amount on Record Sep 2004 2 Names on Record Owner Occupied Assessor + 6 DocumentsUpdated Aug 2026

660 Northern Ave

4 bd · 2.5 ba · 2,473 sqft · built 1956 · 0.258 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,400,000Feb 2015 $28,2112025 Amount on Record Aug 1997 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

664 Northern Ave

2 bd · 1 ba · 1,021 sqft · built 1923 · 0.357 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,310,000Dec 2021 $21,9292025 Amount on Record Feb 2016 2 Names on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

665 Northern Ave

3 bd · 2 ba · 1,560 sqft · built 1960 · 0.275 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,750,000Sep 2022 $17,1932025 Amount on Record Mar 2021 2 Names on Record Assessor + 2 DocumentsUpdated Jul 2026

667 Northern Ave

3 bd · 2 ba · 1,606 sqft · built 1960 · 0.283 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,750,000Sep 2022 $26,2852025 Amount on Record Jul 2005 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

668 Northern Ave

2 bd · 2 ba · 1,164 sqft · built 1920 · 0.262 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,000,000May 2019 $18,0462025 Amount on Record Sep 2008 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

669 Northern Ave

3 bd · 2 ba · 1,554 sqft · built 1972 · 0.312 acres

Last Sale Tax Bill Prior Sale Owner Records
$409,000May 1999 $11,4142025 —Feb 1999 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

670 Northern Ave

0.004 acres

Last Sale Tax Bill Prior Sale Owner Records
$840,000Jun 2014 $2962025 —Jun 2014 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

671 Northern Ave

3 bd · 3 ba · 2,946 sqft · built 1961 · 0.292 acres

Last Sale Tax Bill Prior Sale Owner Records
$839,000Jul 2002 $21,2702025 Amount on Record Jun 2001 2 Names on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

675 Northern Ave

3 bd · 2 ba · 1,220 sqft · built 1961 · 0.312 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,020,000Nov 2014 $19,6092025 Amount on Record Jul 2012 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

678 Northern Ave

2 bd · 2.5 ba · 2,205 sqft · built 1921 · 0.275 acres

Last Sale Tax Bill Prior Sale Owner Records
$378,000Jun 1995 $13,1372025 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

Wildfire Risk on Northern Ave

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

Wildfire RiskModerate
this street's cells rank above 46% of the US · above 27% of California
Wildfire LikelihoodAbout 1 in 995 per year
ExposureDirect
2 of 6 cells directly exposed · 5 adjoin burnable vegetation

Property Records in Nearby Streets