Located down a private country lane sits this stunning contemporary masterpiece nestled amongst Happy Valley's majestic oaks. From the moment you arrive, you will notice custom epa modern fencing, curated drought-tolerant landscaping, and a dramatic entry walkway which all set the tone for the exceptional living experience within. The expansive great room features soaring ceilings, a designer chandelier, and walls of incredible Marvin sliding glass doors that open to the ultimate California indoor/outdoor living space — a covered loggia with motorized louvered pergola, ceiling fan, built-in firepit table, outdoor TV, and sparkling pool surrounded by lush, mature landscaping. The chef’s kitchen dazzles with an oversized waterfall island, crisp white cabinetry, premium appliances, and dramatic globe pendant lighting. The formal dining room makes every gathering an occasion with its artisan fixture and vibrant designer accents. A sophisticated wet bar rounds out the main living area — ideal for entertaining. Downstairs features three spacious bedrooms, two and a half baths, and an incredible laundry room/office space/ mudroom off the garage. Located upstairs, the private, primary suite is a true retreat, offering a spa-inspired bath and a custom walk-in closet. Incredible loft area off primary bedroom is an ideal offie space. This home delivers the perfect marriage of architectural integrity, designer interiors, and resort-style outdoor living!
For sale
$3,295,000
3646 Happy Valley Rd, Lafayette, CA 94549
4beds
3,470sqft
Residential, Single Family Residence
Built in 1949
0.32 Acres Lot
$3,179,000 Zestimate®
$950/sqft
$-- HOA
What's special
Private country laneSophisticated wet barPrivate primary suiteCustom epa modern fencingOversized waterfall islandArtisan fixtureCurated drought-tolerant landscaping
- 7 days |
- 1,821 |
- 108 |
Zillow last checked:
Listing updated:
Listed by:
Julie Dudum Del Santo DRE #01290985 925-818-5500,
Dudum Real Estate Group
Source: CCAR,MLS#: 41137402
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Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 4
- Full bathrooms: 3
- Partial bathrooms: 1
Rooms
- Room types: 3 Bedrooms, 2.5 Baths, Main Entry, Primary Bedrm Suite - 1, Loft, Den, Office
Bathroom
- Features: Shower Over Tub, Updated Baths, Stall Shower, Tile, Tub
Kitchen
- Features: Breakfast Bar, Stone Counters, Dishwasher, Eat-in Kitchen, Refrigerator, Updated Kitchen
Heating
- Forced Air
Cooling
- Central Air
Appliances
- Included: Dishwasher, Refrigerator
- Laundry: Laundry Room, Common Area
Features
- Formal Dining Room, Breakfast Bar, Updated Kitchen
- Flooring: Hardwood, Carpet
- Number of fireplaces: 1
- Fireplace features: Family Room
Interior area
- Total structure area: 3,470
- Total interior livable area: 3,470 sqft
Video & virtual tour
Property
Parking
- Total spaces: 2
- Parking features: Attached, Garage Door Opener
- Attached garage spaces: 2
Features
- Levels: Two
- Stories: 2
- Has private pool: Yes
- Pool features: Gas Heat
- Fencing: Fenced
Lot
- Size: 0.32 Acres
- Features: Level, Premium Lot, Landscaped, Back Yard, Front Yard
Details
- Parcel number: 2441800501
- Special conditions: Standard
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Modern/High Tech
- Property subtype: Residential, Single Family Residence
Materials
- Stucco
- Roof: Other
Condition
- Existing
- New construction: No
- Year built: 1949
Utilities & green energy
- Electric: No Solar
- Sewer: Public Sewer
- Water: Public
Community & HOA
Community
- Subdivision: Happy Valley
HOA
- Has HOA: No
Location
- Region: Lafayette
Financial & listing details
- Price per square foot: $950/sqft
- Tax assessed value: $1,419,345
- Annual tax amount: $17,473
- Date on market: 6/5/2026
Estimated market value
$3,179,000
$3.02M - $3.34M
$7,611/mo
Price history
| Date | Event | Price |
|---|---|---|
| 6/5/2026 | Listed for sale | $3,295,000+246.8%$950/sqft |
Source:  CCAR #41137402 Report a problem | ||
| 9/10/2002 | Sold | $950,000+39.7%$274/sqft |
Source: CCAR #11145462 Report a problem | ||
| 1/8/1998 | Sold | $680,000$196/sqft |
Source: Public Record Report a problem | ||
| 10/19/1997 | Sold | $680,000$196/sqft |
Source: CCAR #10245943 Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $17,473 +1.7% | $1,419,345 +2% |
| 2024 | $17,175 +1.8% | $1,391,515 +2% |
| 2023 | $16,874 +1.6% | $1,364,232 +2% |
| 2022 | $16,615 +3% | $1,337,483 +2% |
| 2021 | $16,134 +1.7% | $1,311,259 +3.2% |
| 2020 | $15,865 +2.9% | $1,270,102 +2% |
| 2019 | $15,424 +3.7% | $1,245,199 +2% |
| 2018 | $14,881 +2% | $1,220,785 +2% |
| 2017 | $14,596 +1.7% | $1,196,849 +2% |
| 2016 | $14,351 +3.7% | $1,173,382 +1.5% |
| 2015 | $13,837 | $1,155,758 +2% |
| 2014 | $13,837 | $1,133,119 +0.5% |
| 2013 | -- | $1,127,999 +2% |
| 2012 | -- | $1,105,883 +2% |
| 2011 | -- | $1,084,200 +0.8% |
| 2010 | -- | $1,076,098 -0.2% |
| 2009 | -- | $1,078,656 +3% |
| 2008 | -- | $1,047,506 +2% |
| 2007 | -- | $1,026,967 +2% |
| 2006 | -- | $1,006,831 +2% |
| 2005 | -- | $987,090 +2% |
| 2004 | -- | $967,736 +1.9% |
| 2003 | -- | $950,000 +29.3% |
| 2002 | -- | $734,990 +2% |
| 2001 | -- | $720,580 |
Find assessor info on the county website
Monthly payment
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Explore the cost of this home by adjusting the details. Changes won't be saved.All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
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Climate risks
Neighborhood: 94549
Nearby schools
GreatSchools rating
- 8/10Happy Valley Elementary SchoolGrades: K-5Distance: 1.1 mi
- 8/10M. H. Stanley Middle SchoolGrades: 6-8Distance: 0.9 mi
- 10/10Acalanes High SchoolGrades: 9-12Distance: 1.7 mi
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- California
- Contra Costa County
- Lafayette
- 94549
- 3646 Happy Valley Rd
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