17 Underhill Rd is a 1,806 square foot house on a 10,560 square foot lot with 3 bedrooms and 2 bathrooms. Based on Redfin's Mill Valley data, we estimate the home's value is $2,267,102.
Single-familyProperty Type
1961Year Built
10,560 sq ftLot Size
$1,255Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$2,267,102
$18K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 12.6% lower than the average sale price ($2.59M) of 4 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2025
$3,645 (+0.5%)
$57,504 + $128,493
$185,997
2024
$3,628 (+1.6%)
$56,377 + $125,974
$182,351
2023
$3,572 (+7.9%)
$55,272 + $123,504
$178,776
2022
$3,312 (+5.2%)
$54,188 + $121,083
$175,271
2021
$3,147 (+4.8%)
$53,126 + $118,709
$171,835
2020
$3,004 (+12.8%)
$52,084 + $116,381
$168,465
2019
$2,662 (+0.3%)
$51,550 + $115,188
$166,738
2018
$2,655 (−9.5%)
$50,539 + $112,930
$163,469
2017
$2,934 (+24.2%)
$48,577 + $108,545
$157,122
2016
$2,361 (−13.7%)
$48,577 + $108,545
$157,122
2015
$2,735 (+7.7%)
$47,625 + $106,417
$154,042
2014
$2,539 (+15.9%)
$45,991 + $102,766
$148,757
2013
$2,191 (+1.4%)
$45,991 + $102,766
$148,757
2012
$2,161 (−11.4%)
$45,783 + $102,302
$148,085
2011
$2,441 (+14.4%)
$44,886 + $100,297
$145,183
2010
$2,134 (+1.2%)
$44,006 + $98,330
$142,336
2009
$2,109 (+2.5%)
$43,677 + $97,596
$141,273
2008
$2,059
$43,781 + $97,828
$141,609
Tax history for 17 Underhill Rd
Year
Property tax
Land + Additions
Assessment*
2025
$3,645 (+0.5%)
$57,504 + $128,493
$185,997
2024
$3,628 (+1.6%)
$56,377 + $125,974
$182,351
2023
$3,572 (+7.9%)
$55,272 + $123,504
$178,776
2022
$3,312 (+5.2%)
$54,188 + $121,083
$175,271
2021
$3,147 (+4.8%)
$53,126 + $118,709
$171,835
2020
$3,004 (+12.8%)
$52,084 + $116,381
$168,465
2019
$2,662 (+0.3%)
$51,550 + $115,188
$166,738
2018
$2,655 (−9.5%)
$50,539 + $112,930
$163,469
2017
$2,934 (+24.2%)
$48,577 + $108,545
$157,122
2016
$2,361 (−13.7%)
$48,577 + $108,545
$157,122
2015
$2,735 (+7.7%)
$47,625 + $106,417
$154,042
2014
$2,539 (+15.9%)
$45,991 + $102,766
$148,757
2013
$2,191 (+1.4%)
$45,991 + $102,766
$148,757
2012
$2,161 (−11.4%)
$45,783 + $102,302
$148,085
2011
$2,441 (+14.4%)
$44,886 + $100,297
$145,183
2010
$2,134 (+1.2%)
$44,006 + $98,330
$142,336
2009
$2,109 (+2.5%)
$43,677 + $97,596
$141,273
2008
$2,059
$43,781 + $97,828
$141,609
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Feb 28, 2018 • Final
Residential plan check
Remove and replace a portion of the shingles with a class A assembly on a residential building. No resheathing is included.
Roofing
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Interior
Heating & Cooling
Heating Type: Central
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Exterior
Exterior Information
Building Style Type: Contemporary
Building Construction Quality: Good
Property Information
Subdivision Name: SCOTT VALLEY 01
Living Sq. Ft: 1,806
Building Sq. Ft: 1,806
# of Units: 1
Parking & Garage Information
Garage/Parking Sq. Ft: 441
Lot Information
# of Buildings: 1
Land Sq. Ft: 10,560
Legal Lot Number: 19
Municipality Name: MILL VALLEY
Acres: 0.2424
County Use Description: 1 FAMILY RESID
Financial
Assessor Information
Assessment Year: 2026
Tax Area: MILL VALLEY
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,806
Stories: —
Lot Size: 10,560 square feet
Style: Single Family Residential
Year Built: 1961
Year Renovated: 1961
County: Marin County
APN: 033-152-05
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Edna Maguire Elementary School
Public K-5 • Assigned • 0.3mi
10/10
Mill Valley Middle School
Public 6-8 • Assigned • 1.0mi
9/10
Tamalpais High School
Public 9-12 • Assigned • 1.6mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
3/10 Fire Factor
0.15% chance of being in a wildfire in next 30 years
3/10 Heat Factor
8 days above 83° expected this year, 18 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
8/10 Air Factor
13 unhealthy days expected this year, 13 days in 30 years
Provided by First Street
Historical weather
Mill Valley, CA • 94941
Average low and high temperatures (°F)
59
47
60
48
66
50
64
48
69
51
69
52
68
53
76
56
74
57
72
55
61
50
56
47
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 10.6 hours in
June and 5 hours in December, placing it above the
U.S. average for solar exposure.
10.6 hrs
5 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$2.15M – $2.61M
Reach more buyers when you sell with Redfin. Save up to $22,671 in fees.3 minutes to get started.