20 Portola Green Cir
Portola Valley, CA 94028
4 bd 3 ba 2,830 sqft Built 1975 Lot 11,326 sqft single_family
Most recent sale
$3,560,000
Dec 15, 2021
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| Dec 15, 2021 | Sold | $3,560,000 | MLS #ML81869465 |
| Oct 31, 1994 | Sold | $687,500 | Public Record |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $593,000 | $2,257,000 | $2,850,000 | $32,818 |
| 2024 | $593,000 | $2,257,000 | $2,850,000 | $30,883 |
| 2023 | $754,800 | $2,876,400 | $3,631,200 | $41,708 |
| 2022 | $560,000 | $3,000,000 | $3,560,000 | $40,567 |
| 2021 | $552,818 | $533,422 | $1,086,240 | $13,616 |
| 2020 | $547,150 | $527,953 | $1,075,103 | $13,620 |
| 2019 | $536,422 | $517,601 | $1,054,023 | $13,444 |
| 2018 | $525,904 | $507,452 | $1,033,356 | $12,807 |
| 2017 | $515,593 | $497,502 | $1,013,095 | $12,620 |
| 2016 | $505,484 | $487,748 | $993,232 | $12,375 |
| 2015 | $497,892 | $480,422 | $978,314 | $12,242 |
| 2014 | $488,139 | $471,012 | $959,151 | $11,897 |
| 2013 | $485,933 | $468,884 | $954,817 | $11,715 |
| 2012 | $476,405 | $459,691 | $936,096 | $11,388 |
| 2011 | $467,064 | $450,678 | $917,742 | $11,142 |
| 2010 | $463,574 | $447,310 | $910,884 | $10,959 |
| 2009 | $464,676 | $448,373 | $913,049 | $10,674 |
| 2008 | $455,565 | $439,582 | $895,147 | $10,339 |
| 2007 | $446,633 | $430,963 | $877,596 | $10,065 |
Property facts
Year built
1975
Property type
single_family
Stories
—
Beds
4
Baths
3
Living area
2,830 sqft
Lot size
11,326 sqft
ZIP code
94028
City
Portola Valley
Street
Portola Green Cir
Coordinates
37.37320, -122.21228
Comparable properties nearby
Investment analysis
Estimates based on local averages — not personalized adviceEstimated monthly rent
$21,360
Gross rental yield
7.20%
Implied cap rate
4.68%
Trend-extrapolated value
—
Frequently asked questions
When did 20 Portola Green Cir last sell?
20 Portola Green Cir most recently sold on Dec 15, 2021 for $3,560,000.
What is the current tax assessment for 20 Portola Green Cir?
The most recent total assessment for 20 Portola Green Cir (year 2025) is $2,850,000 with $32,818 in property tax.
How does 20 Portola Green Cir's assessment compare to its last sale price?
The current assessment is 19.9% below the last sale price of $3,560,000.
When was 20 Portola Green Cir built?
20 Portola Green Cir was built in 1975.
How does 20 Portola Green Cir compare to others on Portola Green Cir?
We track 4 other properties on Portola Green Cir. Browse the list under "Other properties on Portola Green Cir" to compare beds, baths, and sale history.
What are the property facts for 20 Portola Green Cir?
20 Portola Green Cir is a 4 bed, 3 bath, 2,830 sqft, 11,326 sqft lot single_family.
Is 20 Portola Green Cir a flip candidate?
No — 20 Portola Green Cir does not appear in our flips dataset.
Is 20 Portola Green Cir a tax-appeal candidate?
No — 20 Portola Green Cir 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
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