421 Alder Ln
San Mateo, CA 94403
3 bd 2 ba 1,960 sqft Built 1951 Lot 6,500 sqft single_family
Most recent sale
$2,300,000
Sep 20, 2022
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| Sep 20, 2022 | Sold | $2,300,000 | MLS #ML81905307 |
| Aug 26, 2022 | Listed | $2,198,000 | MLS #ML81905307 |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $587,826 | $1,805,094 | $2,392,920 | $28,577 |
| 2024 | $587,826 | $1,805,094 | $2,392,920 | $28,052 |
| 2023 | $565,000 | $1,735,000 | $2,300,000 | $27,525 |
| 2022 | $99,427 | $36,983 | $136,410 | $2,920 |
| 2021 | $97,478 | $36,258 | $133,736 | $2,617 |
| 2020 | $96,479 | $35,887 | $132,366 | $2,413 |
| 2019 | $94,588 | $35,184 | $129,772 | $2,656 |
| 2018 | $92,734 | $34,495 | $127,229 | $2,275 |
| 2017 | $90,916 | $33,819 | $124,735 | $2,058 |
| 2016 | $89,134 | $33,156 | $122,290 | $1,896 |
| 2015 | $87,796 | $32,658 | $120,454 | $1,823 |
| 2014 | $86,077 | $32,019 | $118,096 | $1,802 |
| 2013 | $85,688 | $31,875 | $117,563 | $1,763 |
| 2012 | $84,008 | $31,250 | $115,258 | $1,982 |
| 2011 | $82,361 | $30,638 | $112,999 | $1,621 |
| 2010 | $81,746 | $30,410 | $112,156 | $1,883 |
| 2009 | $81,941 | $30,483 | $112,424 | $1,781 |
| 2008 | $80,335 | $29,886 | $110,221 | $1,765 |
| 2007 | $78,760 | $29,300 | $108,060 | $1,791 |
Property facts
Year built
1951
Property type
single_family
Stories
1
Beds
3
Baths
2
Living area
1,960 sqft
Lot size
6,500 sqft
ZIP code
94403
City
San Mateo
Street
Alder Ln
Coordinates
37.53399, -122.30875
Comparable properties nearby
Investment analysis
Estimates based on local averages — not personalized adviceEstimated monthly rent
$13,800
Gross rental yield
7.20%
Implied cap rate
4.68%
Trend-extrapolated value
—
Frequently asked questions
When did 421 Alder Ln last sell?
421 Alder Ln most recently sold on Sep 20, 2022 for $2,300,000.
What is the current tax assessment for 421 Alder Ln?
The most recent total assessment for 421 Alder Ln (year 2025) is $2,392,920 with $28,577 in property tax.
How does 421 Alder Ln's assessment compare to its last sale price?
The current assessment is 4.0% above the last sale price of $2,300,000.
When was 421 Alder Ln built?
421 Alder Ln was built in 1951.
How does 421 Alder Ln compare to others on Alder Ln?
We track 1 other property on Alder Ln. Browse the list under "Other properties on Alder Ln" to compare beds, baths, and sale history.
What are the property facts for 421 Alder Ln?
421 Alder Ln is a 3 bed, 2 bath, 1,960 sqft, 6,500 sqft lot single_family.
Is 421 Alder Ln a flip candidate?
No — 421 Alder Ln does not appear in our flips dataset.
Is 421 Alder Ln a tax-appeal candidate?
No — 421 Alder Ln 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 Alder Ln