See Home Value
$5,400,000
● House - Off Market

4146 Canyon Rd

Lafayette, CA 94549
bedrooms
5 Beds
bathrooms
6 Baths, 1 Half Bath
square feet
8,770 Ft²
$26,515
Est. Monthly

About This Property

Secluded in the hills of Upper Happy Valley, this Mediterranean villa is a private world of resort-style living, amid landscaped grounds framed by sweeping Mt Diablo views. The estate feels worlds away, yet is minutes from downtown Lafayette. Walls of glass frame panoramic mountain vistas. The elegant bar room evokes a club's ambiance. The dining room, with a beamed ceiling and seating for up to 12, flows into the rotunda, a room ideal for cocktail gatherings. Nearby, a spiral staircase leads to an impressive office suite, with 4 chandeliers, windows on 3 sides and Mt Diablo views. The chef's kitchen offers elite appliances, custom counters, fine cabinetry and a breakfast nook. The family room features a 7x12-foot projection screen. The principal suite commands sweeping views of the deck, pool and Mt Diablo. Another bedroom is a second principal suite, secluded for privacy. One of the 2 additional bedrooms opens directly to the garden: fountains, tropical landscaping, a sport court and massive deck. The adjacent guest house can be used as a yoga studio, gym, or bedroom suite. The outdoor bar seats 6 beside a DCS grill, and a hot tub is in a secluded deck corner. The tile roof is beautiful and fire resistant, and the fire station is just down the hill.
Unit Size
8,770 Ft²
Days on Market
35 days
Land Size
3.23 acres
Price per sqft
$616
Property Type
House
Property Taxes
-
HOA Dues
-
Year Built
1958

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Last updated: 8 months ago (bridgeMLS/CCAR/Bay East AOR #41123450)

Price History

Date / Event Date Event Price
Mar 16, 2026 Sold
Sold
Mar 3, 2026 In contract -
In contract
Feb 9, 2026 Listed by Golden Gate Sotheby's Int'l Re $5,400,000
Listed by Golden Gate Sotheby's Int'l Re
Jul 13, 2025 Price Increased $5,888,888
↑ $200K (3.5%)
Price Increased
Jul 11, 2025 Listed $5,688,888
Listed
A once-in-a-lifetime opportunity to own a world-class Mediterranean mansion—an ultra-private, resort-style sanctuary in Upper Happy Valley, one of the Bay Area’s most exclusive enclaves. Designed, built, and previously owned by internationally acclaimed artist and designer Henry Conversano—renowned for ultra-luxury resorts, iconic casinos, and bespoke residences for Donald Trump and other elite clientele—this architectural masterpiece blends timeless artistry with modern sophistication. Thoughtfully renovated around the 2000s, it showcases exceptional craftsmanship and museum-quality finishes throughout. Set behind a private gate at the end of a 200-ft driveway on ~3.2 acres, the 8,282± sq ft estate features a dramatic rotunda hall ideal for private galas and intimate gatherings. Polished marble floors flow through the expansive common areas, and picture windows frame breathtaking views of Mt. Diablo, filling the home with natural light. Masterfully landscaped to evoke the elegance of a diamond necklace, the resort-inspired grounds include lush gardens, a 50-ft waterfall, sculpted fountains, a tranquil aviary, outdoor kitchen, fire pit, and multiple terraces for seamless indoor-outdoor living. A rare legacy estate for the most discerning buyer. Views: Ridge
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Property Highlights

Garage
Parking Available
Air Conditioning
Fireplace
With View

Building Info

Overview

    General

  • Year Built: 1958
  • Effective Year Built: 1990
  • Total Rooms: 16
  • Bedroom Count: 6
  • Bathroom Count: 5
  • Full Bathrooms: 4
  • Partial Bathrooms: 1
  • Building Condition: 4
  • Building Quality: 0
  • Construction Type: 0
  • Building Style: 0
  • Exterior Walls Type: 0
  • Interior Walls Type: 0
  • Roof Shape Type: 0
  • Roof Cover Type: 0
  • Floor Count: 100
  • Floor Cover: 0
  • Basement Type: 0
  • Basement Area: 0
  • Garage Type: 7
  • Garage Square Area: 720
  • Parking Space Count: 3
  • Patio Type: 0
  • Porch Type: 0
  • Pool Type: 8
  • Location Influence Type: V

    Dimensions

  • Lot Size Square Feet: 140,699
  • Total Building Area: 5,725
  • Building Area: 5,725
  • Building Area Measurement: L

    Heating and Cooling

  • Fireplace Count: 1
  • Air Conditioning: 1
  • Heating: 4
  • Heated Square Feet: 5,725
  • Heating Fuel Type: 0

    Utilities

  • Sewer System: 0
  • Water Service: 0

Building

  • Building Type: 0
  • Property Class: R
  • Subdivision: ACALANES RHO
  • Land Acres: 0000003230
  • Standard Land Use Code: 1001
  • County Land Use Code: 11
  • Legal Description 1: RO ACALANES

Neighborhood

  • School Tax School District: ACALANES UNION
  • School Tax District Code 2: LAFAYETTE SD
  • Census Tract: 354002

Geography

  • Parcel: 247-150-005-4
  • Latitude: 37.9042
  • Longitude: -122.162

    Address

  • Full Address: 4146 Canyon Rd
  • Address - House Number: 4146
  • Address - Street Name: Canyon
  • Address - Suffix Type: Rd
  • State: CA
  • City Name: Lafayette
  • Carrier Code: C028
  • 4-Digit Zip Code: 2706
  • Zip Code: 94549

Valuation

    Tax

  • Tax Year: 2020
  • Tax Amount: $3,488,232
  • Tax Rate Code Area: 14-002

    Assessments Valuation

  • Assessed Year: 2020
  • Assessed Total Value: $3,011,119
  • Assessed Land Value: $927,224
  • Assessed Improvements Value: $2,083,895
Data used for valuation calculations is provided by RealtyHop, and other third party sources

Comparables

Unit
Status
Type
Beds
Baths
ft²
Price/ft²
Asking Price
Listed On
Closing Price
Sold On
HOA + Taxes

About Upper Happy Valley


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Nearby Rentals

Unit for rent at 63 Hazel Tree Rdg, ORINDA, CA, 94563

$5,650 /mo

  • 3 Beds
  • 2 Baths
  • 1,528 ft²
63 Hazel Tree Rdg, ORINDA, CA, 94563 Listing by Maria Rossi


Frequently Asked Questions

When was property at 4146 Canyon Road built and last sold?
The property at 4146 Canyon Road was built in 1958 and last sold on Jan 1, 1970 for $0.
How much is this home worth?
The estimated value of the home located at 4146 Canyon Road is $0.
What are some comparable homes to 4146 Canyon Road?
There are currently no comparable homes to 4146 Canyon Road.