12 Valley Oak St
Portola Valley, CA 94028
5 bd 5 ba 3,450 sqft Built 1984 Lot 20,909 sqft single_family
No recorded sales
Location
Timeline: Sale, Listing & Tax History
Recorded events
No recorded events
No sale or listing events are on file for this property.
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $998,099 | $2,541,680 | $3,539,779 | $40,309 |
| 2024 | $998,099 | $2,541,680 | $3,539,779 | $39,815 |
| 2023 | $959,343 | $2,442,985 | $3,402,328 | $39,188 |
| 2022 | $940,533 | $2,395,084 | $3,335,617 | $38,118 |
| 2021 | $922,092 | $2,348,122 | $3,270,214 | $37,610 |
| 2020 | $912,638 | $2,324,045 | $3,236,683 | $37,466 |
| 2019 | $894,744 | $2,278,476 | $3,173,220 | $37,032 |
| 2018 | $877,200 | $2,233,800 | $3,111,000 | $35,215 |
| 2017 | $1,159,572 | $1,095,067 | $2,254,639 | $26,116 |
| 2016 | $1,136,837 | $1,073,596 | $2,210,433 | $25,635 |
| 2015 | $1,119,762 | $1,057,470 | $2,177,232 | $25,411 |
| 2014 | $1,097,828 | $1,036,756 | $2,134,584 | $24,741 |
| 2013 | $1,092,867 | $1,032,071 | $2,124,938 | $24,382 |
| 2012 | $1,071,439 | $1,011,835 | $2,083,274 | $23,890 |
| 2011 | $1,050,432 | $991,996 | $2,042,428 | $23,419 |
| 2010 | $992,583 | $984,583 | $1,977,166 | $22,519 |
| 2009 | $986,923 | $986,923 | $1,973,846 | $22,154 |
| 2008 | $967,572 | $967,572 | $1,935,144 | $21,617 |
| 2007 | $948,600 | $948,600 | $1,897,200 | $21,048 |
Property facts
Year built
1984
Property type
single_family
Stories
—
Beds
5
Baths
5
Living area
3,450 sqft
Lot size
20,909 sqft
ZIP code
94028
City
Portola Valley
Street
Valley Oak St
Coordinates
37.36211, -122.20630
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 12 Valley Oak St last sell?
No public-record sale is on file for 12 Valley Oak St.
What is the current tax assessment for 12 Valley Oak St?
The most recent total assessment for 12 Valley Oak St (year 2025) is $3,539,779 with $40,309 in property tax.
When was 12 Valley Oak St built?
12 Valley Oak St was built in 1984.
How does 12 Valley Oak St compare to others on Valley Oak St?
We track 7 other properties on Valley Oak St. Browse the list under "Other properties on Valley Oak St" to compare beds, baths, and sale history.
What are the property facts for 12 Valley Oak St?
12 Valley Oak St is a 5 bed, 5 bath, 3,450 sqft, 20,909 sqft lot single_family.
Is 12 Valley Oak St a flip candidate?
No — 12 Valley Oak St does not appear in our flips dataset.
Is 12 Valley Oak St a tax-appeal candidate?
No — 12 Valley Oak St is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
-1.6%
Implied 1-yr
-6.2%
2026 Q2
$4.26M
2026 Q3
$4.19M
ZIP 94028 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Valley Oak St