$3,200,000
SOLD OCT 10, 2025
4 Beds
3.5 Baths
2,917 Sq Ft
93,218 Sq Ft

Recently Sold

$1,097 Per Sq Ft

20% Above List Price

6 Days on Market

Highlights

  • In Ground Pool
  • Panoramic View
  • Midcentury Modern Architecture
  • Happy Valley Elementary School Rated A
  • 93,218 Sq Ft lot
  • No HOA

About This Home

As of October 2025

Situated atop a private 2-acre knoll and embraced by stately oaks, this custom Mid-Century Modern gem is a rare offering in the heart of Lafayette’s coveted Happy Valley. Designed for seamless single-level California indoor-outdoor living, this unique home celebrates light and nature with timeless design. The floor plan offers 4 bedrooms, including a private master retreat with office and deck, a guest suite, and 3.5 baths with the majority of rooms opening onto the tiled loggia. Step outside to a sparkling pool and patio perfect for relaxation or entertaining, an extensive level yard and the vistas beyond. Evening breezes flow easily and deer and birds frequent the property. A detached structure with lower level storage room expands possibilities for work, fitness, or creative pursuits. With easy access to top-rated Happy Valley Elementary, BART, Lafayette’s vibrant retail, and miles of hiking adventure at your doorstep, this residence offers not only striking architecture and privacy but also fantastic convenience!

Last Agent to Sell the Property

Stephanie Mull

Compass License #01955633 Listed on: 09/12/2025

Compass

Co-Listed By

Stella Tsakonas

Compass License #01363574

Last Buyer's Agent

Meara Dunsmore

Village Associates Real Estate License #01969953

Home Details

Home Type

  • Single Family

Year Built

  • Built in 1967

Parking

  • 2 Car Attached Garage
  • Garage Door Opener
  • Off-Street Parking

Property Views

  • Panoramic
  • Hills

Home Design

  • Midcentury Modern Architecture
  • Metal Roof
  • Block Exterior
  • Stucco

Interior Spaces

  • 1-Story Property
  • Wood Burning Fireplace

Kitchen

  • Built-In Double Oven
  • Gas Range
  • Microwave
  • Dishwasher

Flooring

  • Carpet
  • Linoleum
  • Tile

Bedrooms and Bathrooms

  • 4 Bedrooms

Pool

  • In Ground Pool
  • Pool Sweep

Additional Features

  • 2.14 Acre Lot
  • Forced Air Heating and Cooling System

Community Details

  • No Home Owners Association
  • Happy Valley Subdivision

Listing and Financial Details

  • Assessor Parcel Number 2460700079

Home Details

Home Type

Single Family

Year Built

Built in 1967

Lot Details

2.14 Acres

Parking

2

Listing Details

  • Stories: 1
  • Year Built: 1967
  • Property Sub Type: Detached
  • Prop. Type: Residential
  • Co List Office Mls Id: CCCOMPS01
  • Subdivision Name: Happy Valley
  • Directions: Happy Valley Road to Panorama
  • Architectural Style: Mid Century Modern
  • Garage Yn: Yes
  • Unit Levels: One Story
  • New Construction: No
  • Special Features: None

Interior Features

  • Flooring: Linoleum, Tile, Carpet
  • Appliances: Dishwasher, Double Oven, Gas Range, Microwave, Oven
  • Full Bathrooms: 3
  • Total Bedrooms: 4
  • Fireplace Features: Wood Burning
  • Fireplaces: 1
  • Fireplace: Yes
  • Room Kitchen Features: Laminate Counters, Dishwasher, Double Oven, Eat-in Kitchen, Disposal, Gas Range/Cooktop, Microwave, Oven Built-in

Exterior Features

  • Roof: Metal
  • Lot Features: Premium Lot
  • Pool Features: In Ground, Pool Sweep
  • Pool Private: Yes
  • View: Hills, Las Trampas Foothills, Panoramic
  • Construction Type: Stucco, Block
  • Property Condition: Existing

Garage/Parking

  • Garage Spaces: 2
  • Parking Features: Attached, Off Street, Garage Door Opener

Utilities

  • Heating: Forced Air
  • Cooling: Central Air
  • Laundry Features: Laundry Room
  • Cooling Y N: Yes
  • Heating Yn: Yes
  • Electric: No Solar
  • Water Source: Public

Condo/Co-op/Association

  • Association: No

Schools

  • Senior High School District: Acalanes (925) 280-3900

Lot Info

  • Lot Size Sq Ft: 93218
  • Parcel Number: 2460700079

Ownership History

Date Name Owned For Owner Type

Purchase Details

Listed on
Sep 12, 2025
Closed on
Sep 23, 2025
Sold by
Ingeborg Diermayer Survivors Trust and Werner And Ingeborg Diermayer Revocable
Bought by
Phillips/Cardoni Revocable Trust and Cardoni
Seller's Agent
Stephanie Mull
Compass
Buyer's Agent
Meara Dunsmore
Village Associates Real Estate
List Price
$2,670,000
Sold Price
$3,200,000
Premium/Discount to List
$530,000
19.85%
Views
21
Current Estimated Value
$3,122,356

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Estimated Appreciation
-$77,644
Avg. Annual Appreciation
-6.78%

Purchase Details

Closed on
Oct 19, 2010
Sold by
Diermayer Ingeborg and Diermayer Sonia
Bought by
Diermayer Ingeborg and Diermayer Sonia

Purchase Details

Closed on
Dec 24, 2002
Sold by
Diermayer Werner and Diermayer Ingeborg
Bought by
Diermayer Werner and Diermayer Ingeborg

Purchase Details

Closed on
Jun 12, 2002
Sold by
Diermayer Werner and Diermayer Ingeborg
Bought by
Diermayer Werner and Diermayer Ingeborg
Source: Public Records

Range of Values:

--
Value Increase
--
Percent Increase
--
Adjusted for Inflation
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Average Value
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List Price
Sold Price
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Home Values in the Area

Source: Public Records

Average Home Value in this Area





Source: Public Records

Purchase History

Date Type Sale Price Title Company
Grant Deed $3,200,000 Chicago Title
Interfamily Deed Transfer -- None Available
Interfamily Deed Transfer -- Commonwealth Title
Interfamily Deed Transfer -- --
Source: Public Records

Property History

Date Event Price List to Sale Price per Sq Ft
10/10/2025 10/10/25 Sold $3,200,000 +19.9% $1,097 / Sq Ft
09/18/2025 09/18/25 Pending -- -- --
09/12/2025 09/12/25 For Sale $2,670,000 -- $915 / Sq Ft
Source: Contra Costa Association of REALTORS®

Tax History

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2025 $28,461 $2,422,500 $1,632,000 $790,500
2024 $5,375 $2,375,000 $1,600,000 $775,000
2023 $5,375 $309,420 $100,123 $209,297
2022 $5,288 $303,354 $98,160 $205,194
2021 $5,137 $297,407 $96,236 $201,171
2019 $4,745 $288,588 $93,383 $195,205
2018 $4,584 $282,930 $91,552 $191,378
2017 $4,506 $277,383 $89,757 $187,626
2016 $4,395 $271,946 $87,998 $183,948
2015 $4,269 $267,862 $86,677 $181,185
2014 $4,205 $262,616 $84,980 $177,636
Source: Public Records

Agents Affiliated with this Home

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Map

Source: Contra Costa Association of REALTORS®

MLS Number: 41111349

Contra Costa Association of REALTORS®

APN: 246-070-007-9

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