621 Alta Ave
San Mateo, CA 94403
5 bd 4 ba 3,320 sqft Built 1955 Lot 10,000 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 | $579,100 | $1,878,018 | $2,457,118 | $31,964 |
| 2024 | $579,100 | $1,878,018 | $2,457,118 | $30,634 |
| 2023 | $556,614 | $1,805,094 | $2,361,708 | $29,939 |
| 2022 | $545,700 | $1,769,700 | $2,315,400 | $29,562 |
| 2021 | $535,000 | $1,735,000 | $2,270,000 | $27,237 |
| 2020 | $468,180 | $1,767,639 | $2,235,819 | $26,621 |
| 2019 | $459,000 | $1,732,980 | $2,191,980 | $25,690 |
| 2018 | $450,000 | $1,699,000 | $2,149,000 | $24,991 |
| 2017 | $99,230 | $42,250 | $141,480 | $2,389 |
| 2016 | $97,285 | $41,422 | $138,707 | $2,786 |
| 2015 | $95,824 | $40,800 | $136,624 | $2,735 |
| 2014 | $93,947 | $40,001 | $133,948 | $3,325 |
| 2013 | $93,523 | $39,821 | $133,344 | $2,693 |
| 2012 | $91,690 | $39,041 | $130,731 | $2,689 |
| 2011 | $89,893 | $38,276 | $128,169 | $2,104 |
| 2010 | $89,222 | $37,990 | $127,212 | $2,050 |
| 2009 | $89,434 | $38,081 | $127,515 | $2,094 |
| 2008 | $87,681 | $37,335 | $125,016 | $1,905 |
| 2007 | $85,962 | $36,603 | $122,565 | $1,752 |
Property facts
Year built
1955
Property type
single_family
Stories
1
Beds
5
Baths
4
Living area
3,320 sqft
Lot size
10,000 sqft
ZIP code
94403
City
San Mateo
Street
Alta Ave
Coordinates
37.54119, -122.31822
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 621 Alta Ave last sell?
No public-record sale is on file for 621 Alta Ave.
What is the current tax assessment for 621 Alta Ave?
The most recent total assessment for 621 Alta Ave (year 2025) is $2,457,118 with $31,964 in property tax.
When was 621 Alta Ave built?
621 Alta Ave was built in 1955.
How does 621 Alta Ave compare to others on Alta Ave?
We track 4 other properties on Alta Ave. Browse the list under "Other properties on Alta Ave" to compare beds, baths, and sale history.
What are the property facts for 621 Alta Ave?
621 Alta Ave is a 5 bed, 4 bath, 3,320 sqft, 10,000 sqft lot single_family.
Is 621 Alta Ave a flip candidate?
No — 621 Alta Ave does not appear in our flips dataset.
Is 621 Alta Ave a tax-appeal candidate?
No — 621 Alta Ave is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+1.9%
Implied 1-yr
+7.7%
2026 Q3
$2.08M
2026 Q4
$2.11M
ZIP 94403 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Alta Ave