Seller's Agent in 2021
Melanie Kozak
Compass
(925) 457-0073
4 in this area
39 Total Sales
1730 Argonne Dr Concord, CA 94518
Shadelands NeighborhoodEstimated Value: $1,086,000 - $1,315,614
4
Beds
2.5
Baths
2,093
Sq Ft
$581/Sq Ft
Est. Value
Highlights
- Updated Kitchen
- Stone Countertops
- Formal Dining Room
- Bancroft Elementary School Rated A-
- No HOA
- 2 Car Direct Access Garage
About This Home
As of September 2021Beautifully updated single story home close to border of Walnut Creek & close to shopping, restaurants, bike & walking trails & BART. Tons of curb appeal with a charming stone walkway leading to entry. Updated kitchen w/ custom cabinets & drawers w/ soft close feature, granite counters, stainless steel appliances & breakfast area opens to cozy family room w/ gas-burning fireplace & built-in cabinets & shelves. Formal dining room, just off kitchen opens to the formal living room. Doors from FR & living room lead to spacious back yard & patio w/ charming “English” garden & lemon trees to enjoy your outdoor entertaining. Spacious primary bedroom suite includes walk-in closet & an updated master bath w/ granite counters, custom vanity & a stall shower. Hall bath features dual sinks, granite counters, custom cabinets, tile flooring & a stone tile surround for shower/tub. Other features include dual pane windows, recessed lighting, interior laundry, plantation shutters and crown molding!
Home Details
Home Type
- Single Family
Year Built
- Built in 1969
Lot Details
- 10,500 Sq Ft Lot
- Fenced
- Sprinklers Throughout Yard
- Back and Front Yard
Parking
- 2 Car Direct Access Garage
- Garage Door Opener
Home Design
- Shingle Roof
- Wood Siding
- Stone Siding
- Stucco
Interior Spaces
- 1-Story Property
- Brick Fireplace
- Gas Fireplace
- Double Pane Windows
- Family Room with Fireplace
- Family Room Off Kitchen
- Formal Dining Room
- Security System Owned
Kitchen
- Updated Kitchen
- Eat-In Kitchen
- Built-In Self-Cleaning Oven
- Gas Range
- Microwave
- Plumbed For Ice Maker
- Dishwasher
- Stone Countertops
- Disposal
Flooring
- Carpet
- Laminate
- Tile
Bedrooms and Bathrooms
- 4 Bedrooms
Laundry
- Dryer
- Washer
Outdoor Features
- Shed
Utilities
- Whole House Fan
- Forced Air Heating and Cooling System
- Gas Water Heater
Community Details
- No Home Owners Association
- Contra Costa Association
- Concord Subdivision
Listing and Financial Details
- Assessor Parcel Number 145090030
Ownership History
Date
Name
Owned For
Owner Type
Purchase Details
Listed on
Aug 17, 2021
Closed on
Oct 1, 2021
Sold by
Mazzoncini Daniel J and Mazzoncini Lisa A
Bought by
Mazzoncini Daniel J and Mazzoncini Lisa A
Seller's Agent
Melanie Kozak
Compass
Buyer's Agent
Jeanine Wakefield
Coldwell Banker
List Price
$1,075,000
Sold Price
$1,275,500
Premium/Discount to List
$200,500
18.65%
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
-$59,846
Avg. Annual Appreciation
-1.01%
Original Mortgage
$548,250
Outstanding Balance
$499,953
Interest Rate
2.8%
Mortgage Type
New Conventional
Estimated Equity
$715,701
Purchase Details
Listed on
Aug 17, 2021
Closed on
Sep 3, 2021
Sold by
Edward Knuckles Cliff
Bought by
1986 Knuckles Living Trust
Seller's Agent
Melanie Kozak
Compass
Buyer's Agent
Jeanine Wakefield
Coldwell Banker
List Price
$1,075,000
Sold Price
$1,275,500
Premium/Discount to List
$200,500
18.65%
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$548,250
Outstanding Balance
$499,953
Interest Rate
2.8%
Mortgage Type
New Conventional
Estimated Equity
$715,701
Purchase Details
Listed on
Aug 17, 2021
Closed on
Sep 1, 2021
Sold by
Knuckles Gloria A and The 1986 Knuckles Living Trust
Bought by
Mazzoncini Daniel J and Mazzoncini Lisa A
Seller's Agent
Melanie Kozak
Compass
Buyer's Agent
Jeanine Wakefield
Coldwell Banker
List Price
$1,075,000
Sold Price
$1,275,500
Premium/Discount to List
$200,500
18.65%
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$548,250
Outstanding Balance
$499,953
Interest Rate
2.8%
Mortgage Type
New Conventional
Estimated Equity
$715,701
Purchase Details
Closed on
Jun 21, 2019
Sold by
Alford Richard B and Alford Kathleen A
Bought by
Knuckles Clifford E and Knuckles Gloria A
Purchase Details
Closed on
Sep 23, 2014
Sold by
Alford Richard B and Alford Kathleen A
Bought by
Alford Trust
Purchase Details
Closed on
Aug 19, 1999
Sold by
Mccort Thomas M and Mccort Jo Pugh
Bought by
Alford Richard B and Alford Kathleen A
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$239,000
Interest Rate
7.63%
Mortgage Type
Purchase Money Mortgage
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Home Values in the Area
Average Home Value in this Area
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 |
|---|---|---|---|
| Mazzoncini Daniel J | -- | Chicago Title Company | |
| 1986 Knuckles Living Trust | -- | -- | |
| Mazzoncini Daniel J | $1,275,500 | North American Title Co Inc | |
| 1986 Knuckles Living Trust | -- | -- | |
| Knuckles Clifford E | $900,000 | Fidelity National Title Co | |
| Alford Trust | -- | None Available | |
| Alford Richard B | $327,000 | Chicago Title Co |
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 | Mazzoncini Daniel J | $548,250 | |
| Previous Owner | Alford Richard B | $239,000 |
Source: Public Records
Property History
| Date | Event | Price | List to Sale | Price per Sq Ft |
|---|---|---|---|---|
| 02/04/2025 02/04/25 | Off Market | $1,275,500 | -- | -- |
| 09/03/2021 09/03/21 | Sold | $1,275,500 | +18.7% | $609 / Sq Ft |
| 08/24/2021 08/24/21 | Pending | -- | -- | -- |
| 08/17/2021 08/17/21 | For Sale | $1,075,000 | -- | $514 / 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 | $15,944 | $1,353,040 | $928,557 | $424,483 |
| 2024 | $15,304 | $1,326,510 | $910,350 | $416,160 |
| 2023 | $15,304 | $1,300,500 | $892,500 | $408,000 |
| 2022 | $15,136 | $1,275,000 | $875,000 | $400,000 |
| 2021 | $10,910 | $909,324 | $606,216 | $303,108 |
| 2019 | $5,819 | $450,527 | $247,998 | $202,529 |
| 2018 | $5,594 | $441,694 | $243,136 | $198,558 |
| 2017 | $5,404 | $433,034 | $238,369 | $194,665 |
| 2016 | $5,248 | $424,545 | $233,696 | $190,849 |
| 2015 | $5,181 | $418,169 | $230,186 | $187,983 |
| 2014 | $5,085 | $409,978 | $225,677 | $184,301 |
Source: Public Records
Agents Affiliated with this Home
-
Melanie Kozak
-
Jeanine Wakefield
Buyer's Agent in 2021
Jeanine Wakefield
Coldwell Banker
(925) 788-6132
1 in this area
16 Total Sales
Map
Source: Contra Costa Association of REALTORS®
MLS Number: 40961538
APN: 145-090-030-1
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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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