4090 Happy Valley Rd
Lafayette, CA 94549
5 bd 7 ba 6,211 sqft Built 1948 Lot 114,998 sqft single_family
Most recent sale
$3,650,000
Jun 8, 2004
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| May 7, 2026 | Sold | $9,000,000 | ContraCosta |
| Apr 27, 2026 | Listed | $8,495,000 | ContraCosta |
| May 11, 2025 | Sold | $4,295,000 | ContraCosta |
| Dec 21, 2023 | Sold | $8,995,000 | Public Record |
| Jun 14, 2023 | Listed | $8,995,000 | ContraCosta |
| May 4, 2022 | Price changed | $9,995,000 | MLS #40978714 |
| Jan 21, 2022 | Listed | $11,950,000 | MLS #40978714 |
| Jun 23, 2021 | Listed | $14,995,000 | MLS #40955563 |
| Apr 21, 2020 | Listing removed | $4,950,000 | ContraCosta |
| Feb 25, 2020 | Listing removed | $1,795,000 | ContraCosta |
| Oct 16, 2008 | Listing removed | $1,795,000 | ContraCosta |
| Aug 15, 2008 | Listed | $1,795,000 | MLS #40363547 |
| Jun 2, 2008 | Listed | $4,295,000 | MLS #40346723 |
| Jun 8, 2004 | Sold | $3,650,000 | Public Record |
| Jul 19, 2003 | Listing removed | $3,750,000 | ContraCosta |
| Jun 2, 2003 | Listed | $3,750,000 | MLS #11190361 |
| Oct 2, 2002 | Listing removed | $4,950,000 | ContraCosta |
| Sep 13, 2002 | Listed | $4,950,000 | MLS #11157041 |
| Sep 12, 2002 | Listing removed | $4,950,000 | ContraCosta |
| Jun 16, 2002 | Listed | $4,950,000 | MLS #11143783 |
| Oct 23, 1996 | Sold | $1,350,000 | MLS #26219779 |
| Jul 12, 1996 | Sold | $1,350,000 | MLS #10219779 |
| Jun 25, 1996 | Listed | $1,395,000 | MLS #26219779 |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $3,054,900 | $6,120,000 | $9,174,900 | $101,744 |
| 2024 | $3,054,900 | $6,120,000 | $9,174,900 | $100,047 |
| 2023 | $3,546,691 | $3,374,882 | $6,921,573 | $77,688 |
| 2022 | $3,477,149 | $3,308,708 | $6,785,857 | $76,517 |
| 2021 | $2,750,000 | $2,500,000 | $5,250,000 | $59,052 |
| 2020 | $2,600,000 | $2,600,000 | $5,200,000 | $59,440 |
| 2019 | $2,500,000 | $2,600,000 | $5,100,000 | $58,580 |
| 2018 | $1,700,000 | $2,100,000 | $3,800,000 | $43,292 |
| 2017 | $1,500,000 | $2,000,000 | $3,500,000 | $40,060 |
| 2016 | $1,500,000 | $2,000,000 | $3,500,000 | $40,136 |
| 2015 | $1,500,000 | $2,000,000 | $3,500,000 | $39,641 |
Property facts
Year built
1948
Property type
single_family
Stories
2
Beds
5
Baths
7
Living area
6,211 sqft
Lot size
114,998 sqft
ZIP code
94549
City
Lafayette
Street
Happy Valley Rd
Coordinates
37.90853, -122.15832
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 4090 Happy Valley Rd last sell?
4090 Happy Valley Rd most recently sold on Jun 8, 2004 for $3,650,000.
What is the current tax assessment for 4090 Happy Valley Rd?
The most recent total assessment for 4090 Happy Valley Rd (year 2025) is $9,174,900 with $101,744 in property tax.
How does 4090 Happy Valley Rd's assessment compare to its last sale price?
The current assessment is 151.4% above the last sale price of $3,650,000.
When was 4090 Happy Valley Rd built?
4090 Happy Valley Rd was built in 1948.
How does 4090 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 4090 Happy Valley Rd?
4090 Happy Valley Rd is a 5 bed, 7 bath, 6,211 sqft, 114,998 sqft lot single_family.
Is 4090 Happy Valley Rd a flip candidate?
Yes — 4090 Happy Valley Rd appears in our flips dataset, indicating it sold twice within a short window with a notable price change.
Is 4090 Happy Valley Rd a tax-appeal candidate?
No — 4090 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