Rita Dhillon
Compass
(925) 306-1395
80 Total Sales
1 in Happy Valley
$4,250,000 Price
20 Monticello Ct Lafayette, CA 94549
Happy Valley NeighborhoodEstimated Value: $5,370,040
5
Beds
4.5
Baths
4,718
Sq Ft
$1,138/Sq Ft
Est. Value
Highlights
- In Ground Pool
- 69,740 Sq Ft lot
- Contemporary Architecture
- Updated Kitchen
- Fireplace in Primary Bedroom
- Freestanding Bathtub
About This Home
As of March 2026A 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
Better Homes And Gardens Rp License #01292997 Listed on: 02/18/2026
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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
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
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Estimated Appreciation
$70,040
Avg. Annual Appreciation
3.71%
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
$221,000
Interest Rate
8.21%
Mortgage Type
Credit Line Revolving
Home Values in the Area
Average Home Value in this Area
Agents Specializing in Happy Valley, CA
-
Rita Dhillon
-
Kelly Crawford
Kelly Crawford
Vanguard Properties
(925) 396-7158
217 Total Sales
4 in Happy Valley
$1.1M - $3M Price Range
-
Joakim Bye
Joakim Bye
Ocean Element Real Estate
(650) 600-9932
45 Total Sales
1 in Happy Valley
$2,600,000 Price
-
Kat Sellis
Kat Sellis
Real Broker
(925) 940-8695
88 Total Sales
2 in Happy Valley
$2.6M - $4M Price Range
-
Stephanie Velasquez
Stephanie Velasquez
Rise Group Real Estate
(888) 314-5406
11 Total Sales
1 in Happy Valley
$1,660,000 Price
-
Alexis Thompson
Alexis Thompson
Responds QuicklyVillage Associates Real Estate
(510) 422-0708
71 Total Sales
2 in Happy Valley
$2.1M - $5.5M Price Range
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 |
|---|---|---|---|
| Previous Owner | $1,042,000 | ||
| Previous Owner | $1,700,000 | ||
| Previous Owner | $600,000 | ||
| Previous Owner | $1,983,200 | ||
| Previous Owner | $500,000 | ||
| Previous Owner | $1,625,000 | ||
| Previous Owner | $888,000 | ||
| Previous Owner | $808,112 | ||
| Previous Owner | $1,086,400 | ||
| Previous Owner | $600,000 | ||
| Previous Owner | $221,000 | ||
| 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 |
|---|---|---|---|---|
| 2026 | $58,605 | $5,200,000 | $2,700,000 | $2,500,000 |
| 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
31 Total Sales
-
Tina Frechman
Buyer's Agent in 2026
Tina Frechman
Dudum Real Estate Group
(925) 915-0851
10 in this area
57 Total Sales
-
Stella Tsakonas
Seller's Agent in 2021
Stella Tsakonas
Compass
(925) 878-6603
20 in this area
102 Total Sales
-
Stephanie Mull
Seller Co-Listing Agent in 2021
Stephanie Mull
Compass
(925) 878-1896
17 in this area
80 Total Sales
-
Michele McKay
Buyer's Agent in 2021
Michele McKay
Vanguard Properties
(925) 482-4116
16 Total Sales
Map
Source: Contra Costa Association of REALTORS®
MLS Number: 41124342
APN: 245-100-021-6
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.
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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