NOT LISTED FOR SALE

20 Monticello Ct Lafayette, CA 94549

Happy Valley Neighborhood

Estimated Value: $4,956,439 - $5,475,000

5 Beds
4.5 Baths
4,718 Sq Ft
$1,108/Sq Ft Est. Value

Sale Details

Date Sold: March 25, 2026

Last sale price $5,300,000 $1,123 Per Sq Ft

Est. 1% decrease in value since last sale

Current estimated payment $32,966 / mo

7 Days on Market

Highlights

  • In Ground Pool
  • Updated Kitchen
  • Fireplace in Primary Bedroom
  • Happy Valley Elementary School Rated A
  • 69,740 Sq Ft lot
  • Contemporary Architecture

About This Home

As of March 2026

A striking contemporary estate celebrating California’s indoor-outdoor lifestyle, marked by architectural presence and modern elegance. Soaring ceilings, hardwood floors, designer lighting, and expansive glass elevate its sophisticated design. The formal living room features a gas fireplace, tray ceiling with cove lighting, hurricane sliding doors, dining area, and wine closet for approx. 200 bottles. The gourmet kitchen offers Thermador appliances including six-burner range, double ovens, dual Bosch dishwashers, prep sink, expansive island, soft-close cabinetry, under-cabinet lighting, and bay-window nook with garden views. The family room includes a gas fireplace, custom built-ins, and patio access. Bedrooms include a Jack and Jill suite, versatile bedroom with built-ins, and private wing with guest suite. The primary suite offers its own fireplace, patio access, walk-in closets with custom organizers, and spa-style bath with double vanity, freestanding soaking tub, dual shower heads, and bidet features. Resort-style grounds showcase an infinity-edge Pebble Tec pool and spa with cascading water and slide, patios, paver walkways, outdoor kitchen, fireplace, sport court, greenhouse, and mature redwoods. Ideally located just minutes to town, commute routes, and top-rated schools.

Last Agent to Sell the Property

Renee Wagner

Better Homes And Gardens Rp License #01292997 Listed on: 02/18/2026

Better Homes And Gardens Rp

Last Buyer's Agent

Tina Frechman

Dudum Real Estate Group License #01970768

Home Details

Home Type

  • Single Family

Year Built

  • Built in 1998

Lot Details

  • 1.6 Acre Lot
  • Back Yard

Parking

  • 3 Car Attached Garage
  • Garage Door Opener
  • Parking Lot

Home Design

  • Contemporary Architecture
  • Metal Roof
  • Wood Siding
  • Stucco

Interior Spaces

  • 1-Story Property
  • Double Pane Windows
  • Family Room with Fireplace
  • 2 Fireplaces
  • Living Room with Fireplace

Kitchen

  • Updated Kitchen
  • Breakfast Area or Nook
  • Breakfast Bar
  • Double Self-Cleaning Oven
  • Built-In Range
  • Plumbed For Ice Maker
  • Bosch Dishwasher
  • Dishwasher

Flooring

  • Wood
  • Tile

Bedrooms and Bathrooms

  • 5 Bedrooms
  • Fireplace in Primary Bedroom
  • Freestanding Bathtub
  • Soaking Tub

Pool

  • In Ground Pool

Utilities

  • Zoned Heating and Cooling System
  • Power Generator
  • Gas Water Heater

Community Details

  • No Home Owners Association
  • Happy Valley Subdivision

Listing and Financial Details

  • Assessor Parcel Number 2451000216

Home Details

Home Type

Single Family

Year Built

Built in 1998

Lot Details

1.6 Acres

Parking

3

Listing Details

  • Stories: 1
  • Year Built: 1998
  • Property Sub Type: Detached
  • Prop. Type: Residential
  • Subdivision Name: Happy Valley
  • Directions: Glen Rd. to Monticello Ct.
  • Architectural Style: Contemporary
  • Garage Yn: Yes
  • Unit Levels: One Story
  • New Construction: No
  • Special Features: VirtualTour

Interior Features

  • Flooring: Hardwood, Tile
  • Spa Features: Heated
  • Appliances: Dishwasher, Double Oven, Plumbed For Ice Maker, Range, Refrigerator, Self Cleaning Oven, Gas Water Heater
  • Full Bathrooms: 4
  • Total Bedrooms: 5
  • Fireplace Features: Family Room, Living Room, Master Bedroom
  • Fireplaces: 2
  • Fireplace: Yes
  • Window Features: Double Pane Windows
  • Room Kitchen Features: Breakfast Bar, Breakfast Nook, Stone Counters, Dishwasher, Double Oven, Disposal, Ice Maker Hookup, Kitchen Island, Pantry, Range/Oven Built-in, Refrigerator, Self-Cleaning Oven, Updated Kitchen

Exterior Features

  • Roof: Metal
  • Lot Features: Premium Lot, Back Yard, Landscaped
  • Pool Features: In Ground
  • Pool Private: Yes
  • Construction Type: Stucco, Wood Siding
  • Property Condition: Existing

Garage/Parking

  • Garage Spaces: 3
  • Parking Features: Attached, Side Yard Access, Parking Lot, Garage Door Opener

Utilities

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

Condo/Co-op/Association

  • Association: No

Lot Info

  • Lot Size Sq Ft: 69740
  • Parcel Number: 2451000216

Ownership History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Name Owned For Owner Type

Purchase Details

Listed on
Feb 18, 2026
Closed on
Mar 17, 2026
Sold by
Bought by
Seller's Agent
Renee Wagner
Better Homes And Gardens Rp
Buyer's Agent
Tina Frechman
Dudum Real Estate Group
List Price
$4,900,000
Sold Price
$5,300,000
Premium/Discount to List
$400,000
8.16%
Views
213
Current Estimated Value
$5,229,813

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Estimated Appreciation
-$70,187
Avg. Annual Appreciation
-5.19%
Original Mortgage
$3,445,000
Outstanding Balance
$3,445,000
Interest Rate
6.09%
Mortgage Type
Construction
Estimated Equity
$1,784,813

Purchase Details

Listed on
Apr 5, 2021
Closed on
Apr 15, 2021
Sold by
Bought by
Seller's Agent
Stella Tsakonas
Compass
Buyer's Agent
Michele McKay
Vanguard Properties
List Price
$5,295,000
Sold Price
$5,295,000

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Avg. Annual Appreciation
0.02%

Purchase Details

Closed on
Mar 4, 2019
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$1,042,000
Interest Rate
4.5%
Mortgage Type
New Conventional

Purchase Details

Closed on
Feb 6, 2019
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$1,042,000
Interest Rate
4.5%
Mortgage Type
New Conventional

Purchase Details

Closed on
Mar 17, 2018
Sold by
Bought by

Purchase Details

Closed on
Apr 16, 2012
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$1,700,000
Interest Rate
3.5%
Mortgage Type
New Conventional

Purchase Details

Closed on
Nov 12, 2009
Sold by
Bought by

Purchase Details

Closed on
Jan 18, 2000
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$1,109,250
Interest Rate
7.84%
Mortgage Type
Purchase Money Mortgage
Source: Public Records

Range of Values:

--
Value Increase
--
Percent Increase
--
Adjusted for Inflation
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Average Value
Not Available
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

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Buyer Sale Price Title Company
$5,300,000 Fidelity National Title Compan
$5,295,000 Chicago Title Company
-- None Available
-- Chicago Title Company
-- None Available
$2,200,000 Chicago Title Company
-- None Available
-- None Available
$1,479,000 Placer Title Company
Source: Public Records

Mortgage History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Status Borrower Loan Amount
Open $3,445,000
Previous Owner $1,042,000
Previous Owner $1,700,000
Previous Owner $1,109,250
Source: Public Records

Property History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Event Price List to Sale Price per Sq Ft Prior Sale
03/25/2026 03/25/26 Sold $5,300,000 +8.2% $1,123 / Sq Ft
02/25/2026 02/25/26 Pending -- -- --
02/18/2026 02/18/26 For Sale $4,900,000 -7.5% $1,039 / Sq Ft
02/04/2025 02/04/25 Off Market $5,295,000 -- --
04/21/2021 04/21/21 Sold $5,295,000 0.0% $1,122 / Sq Ft View Prior Sale
04/11/2021 04/11/21 Pending -- -- --
04/05/2021 04/05/21 Price Changed $5,295,000 0.0% $1,122 / Sq Ft
04/05/2021 04/05/21 For Sale $5,295,000 -- $1,122 / Sq Ft
Source: Contra Costa Association of REALTORS®

Tax History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

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 $58,605 $5,200,000 $4,000,000 $1,200,000
2024 $54,915 $5,000,000 $3,500,000 $1,500,000
2023 $54,915 $4,837,000 $3,467,000 $1,370,000
2022 $61,316 $5,400,900 $3,870,900 $1,530,000
2021 $29,922 $2,570,377 $1,102,378 $1,467,999
2019 $29,502 $2,494,140 $1,069,682 $1,424,458
2018 $28,459 $2,445,236 $1,048,708 $1,396,528
2017 $27,972 $2,397,292 $1,028,146 $1,369,146
2016 $27,484 $2,350,287 $1,007,987 $1,342,300
2015 $26,577 $2,299,225 $992,847 $1,306,378
2014 $26,375 $2,254,187 $973,399 $1,280,788
Source: Public Records

Agents Affiliated with this Home

  • Renee Wagner

    Seller's Agent in 2026

    Renee Wagner

    Better Homes and Gardens Real Estate Reliance Partners

    (925) 250-5440

    1 in this area

    33 Total Sales

    Renee Wagner
    Section Image
  • Tina Frechman

    Buyer's Agent in 2026

    Tina Frechman

    Dudum Real Estate Group

    (925) 915-0851

    10 in this area

    60 Total Sales

    Tina Frechman
    Section Image
  • Stella Tsakonas

    Seller's Agent in 2021

    Stella Tsakonas

    Compass

    (925) 878-6603

    21 in this area

    107 Total Sales

    Stella Tsakonas
    Section Image
  • Stephanie Mull

    Seller Co-Listing Agent in 2021

    Stephanie Mull

    Compass

    (925) 878-1896

    16 in this area

    80 Total Sales

    Stephanie Mull
    Section Image
  • Michele McKay

    Buyer's Agent in 2021

    Michele McKay

    Vanguard Properties

    (925) 482-4116

    17 Total Sales

    Michele McKay
    Section Image
See All Agents

Map

Source: Contra Costa Association of REALTORS®

MLS Number: 41124342

Contra Costa Association of REALTORS®

APN: 245-100-021-6

California Contra Costa County Lafayette 94549 Happy Valley

20 Monticello Ct, Lafayette, CA

Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.

Contra Costa Association of REALTORS® Bay East ©2026. BridgeMLS ©2026, CCAR ©2026. Information Deemed Reliable But Not Guaranteed. This information is being provided by the Bay East MLS, BridgeMLS or CCAR MLS. The listings presented here may or may not be listed by the Broker/Agent operating this website. This information is intended for the personal use of consumers, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

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