3840 Happy Valley Rd
Lafayette, CA 94549
5 bd 4 ba 3,866 sqft Built 1947 Lot 33,846 sqft single_family
Most recent sale
$4,305,000
May 9, 2022
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| May 9, 2022 | Sold | $4,305,000 | MLS #40990129 |
| Apr 22, 2022 | Listed | $3,995,000 | MLS #40990129 |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $850,000 | $3,000,000 | $3,850,000 | $43,953 |
| 2024 | $850,000 | $3,000,000 | $3,850,000 | $43,494 |
| 2023 | $1,020,000 | $3,371,100 | $4,391,100 | $50,043 |
| 2022 | $664,340 | $811,585 | $1,475,925 | $18,158 |
| 2021 | $651,314 | $795,672 | $1,446,986 | $17,633 |
| 2020 | $644,636 | $787,514 | $1,432,150 | $17,685 |
| 2019 | $631,997 | $772,073 | $1,404,070 | $17,226 |
| 2018 | $619,605 | $756,935 | $1,376,540 | $16,619 |
| 2017 | $607,456 | $742,094 | $1,349,550 | $16,335 |
| 2016 | $595,546 | $727,544 | $1,323,090 | $16,033 |
| 2015 | $586,601 | $716,616 | $1,303,217 | $15,600 |
| 2014 | $575,111 | $702,579 | $1,277,690 | $15,465 |
| 2013 | $572,512 | $699,404 | $1,271,916 | $15,287 |
| 2012 | $561,287 | $685,691 | $1,246,978 | $14,830 |
| 2011 | $550,282 | $246,384 | $796,666 | $9,924 |
| 2010 | $546,170 | $244,543 | $790,713 | $9,656 |
| 2009 | $547,468 | $245,124 | $792,592 | $9,578 |
| 2008 | $536,734 | $240,318 | $777,052 | $9,415 |
| 2007 | $526,210 | $235,606 | $761,816 | $9,051 |
Property facts
Year built
1947
Property type
single_family
Stories
1
Beds
5
Baths
4
Living area
3,866 sqft
Lot size
33,846 sqft
ZIP code
94549
City
Lafayette
Street
Happy Valley Rd
Coordinates
37.90532, -122.14085
Comparable properties nearby
Investment analysis
Estimates based on local averages — not personalized adviceEstimated monthly rent
$25,830
Gross rental yield
7.20%
Implied cap rate
4.68%
Trend-extrapolated value
—
Frequently asked questions
When did 3840 Happy Valley Rd last sell?
3840 Happy Valley Rd most recently sold on May 9, 2022 for $4,305,000.
What is the current tax assessment for 3840 Happy Valley Rd?
The most recent total assessment for 3840 Happy Valley Rd (year 2025) is $3,850,000 with $43,953 in property tax.
How does 3840 Happy Valley Rd's assessment compare to its last sale price?
The current assessment is 10.6% below the last sale price of $4,305,000.
When was 3840 Happy Valley Rd built?
3840 Happy Valley Rd was built in 1947.
How does 3840 Happy Valley Rd compare to others on Happy Valley Rd?
We track 8 other properties on Happy Valley Rd. Browse the list under "Other properties on Happy Valley Rd" to compare beds, baths, and sale history.
What are the property facts for 3840 Happy Valley Rd?
3840 Happy Valley Rd is a 5 bed, 4 bath, 3,866 sqft, 33,846 sqft lot single_family.
Is 3840 Happy Valley Rd a flip candidate?
No — 3840 Happy Valley Rd does not appear in our flips dataset.
Is 3840 Happy Valley Rd a tax-appeal candidate?
No — 3840 Happy Valley Rd is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+2.8%
Implied 1-yr
+11.3%
2026 Q3
$3.4M
2026 Q4
$3.4M
ZIP 94549 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Happy Valley Rd