421 Keystone Drive, in the sought after Winter Valley Subdivision, is tucked away at the end of a peaceful cul-de-sac and backs to trees and common ground. This stunning 4-bedroom, 3.5-bath beauty offers over 2,500 sq ft of stylish, updated living space. The open concept main level is flooded with natural light and connects seamlessly to the backyard oasis.
Enjoy summer like never before with your heated saltwater inground pool, surrounded by expansive outdoor entertaining space perfect for pool parties, BBQs, or a relaxing evening under the stars.
Step inside to find acacia hardwood floors on the main level and an updated kitchen with stainless steel appliances. The second level has bamboo hardwood throughout and the large primary bedroom has a beautifully updated ensuite and a custom walk-in closet. The finished walk-out lower level features a bar, full bath, and additional sleeping space. Other major upgrades include a newer roof, gutters, HVAC and windows so you can move right in with peace of mind.
Whether you're hosting the big game, poolside BBQs, or relaxing in your peaceful retreat, this home checks all the boxes.
Come check it out before it is too late!
Closed
Listing Provided by: Realty Executives of St. Louis
Bought with: Byrne & Associates Real Estate LLC
Price Unknown
421 Keystone Dr, Fenton, MO 63026
4beds
2,210sqft
Single Family Residence
Built in 1999
0.52 Acres Lot
$560,100 Zestimate®
$--/sqft
$3,486 Estimated rent
Home value
$560,100
$498,000 - $633,000
$3,486/mo
Zestimate® history
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List your homeWhat's special
Heated saltwater inground poolBackyard oasisFinished walk-out lower levelAcacia hardwood floorsAdditional sleeping spaceOpen concept main levelCustom walk-in closet
Zillow last checked:
Listing updated:
Listing Provided by:
Michael E Wood 314-800-3015,
Realty Executives of St. Louis
Bought with:
Daniel P Byrne, 1999084214
Byrne & Associates Real Estate LLC
Source: MARIS,MLS#: 25042109
Originating MLS: St. Louis Association of REALTORS
Originating MLS: St. Louis Association of REALTORSFacts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 4
- Full bathrooms: 3
- 1/2 bathrooms: 1
- Main level bathrooms: 1
Heating
- Forced Air, Natural Gas
Cooling
- Central Air
Features
- Ceiling Fan(s), Custom Cabinetry, Double Vanity, Eat-in Kitchen, Entrance Foyer, High Speed Internet, Kitchen Island, Open Floorplan, Separate Dining, Separate Shower, Two Story Entrance Foyer, Walk-In Closet(s), Wet Bar
- Doors: Panel Door(s)
- Basement: Partially Finished,Sleeping Area,Storage Space,Sump Pump,Walk-Out Access
- Number of fireplaces: 1
- Fireplace features: Great Room
Interior area
- Total interior livable area: 2,210 sqft
- Finished area above ground: 2,210
Property
Parking
- Total spaces: 2
- Parking features: Attached, Concrete
- Attached garage spaces: 2
Features
- Levels: Two
- Patio & porch: Composite, Deck
- Has private pool: Yes
- Pool features: Fiberglass, Filtered, Gas Heat, Heated, In Ground, Private, Salt Water
- Fencing: Fenced
Lot
- Size: 0.52 Acres
- Dimensions: 82 x 163 x 124 x 228
- Features: Adjoins Common Ground, Back Yard, Cul-De-Sac, Front Yard, Landscaped, Some Trees, Sprinklers In Front, Sprinklers In Rear
Details
- Parcel number: 021.002.04001066
- Special conditions: Standard
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Traditional
- Property subtype: Single Family Residence
Materials
- Brick Veneer, Vinyl Siding
- Roof: Architectural Shingle
Condition
- Year built: 1999
Utilities & green energy
- Sewer: Public Sewer
- Utilities for property: Electricity Connected
Community & neighborhood
Location
- Region: Fenton
- Subdivision: Winter Valley 03
HOA & financial
HOA
- Has HOA: Yes
- HOA fee: $500 annually
- Amenities included: Association Management, Common Ground
- Services included: Maintenance Parking/Roads, Common Area Maintenance, Snow Removal
- Association name: Winter Valley HOA
Other
Other facts
- Listing terms: Cash,Conventional
Price history
| Date | Event | Price |
|---|---|---|
| 8/13/2025 | Sold | -- |
Source:  MARIS #25042109 Report a problem | ||
| 7/14/2025 | Pending sale | $485,000$219/sqft |
Source: MARIS #25042109 Report a problem | ||
| 7/7/2025 | Listed for sale | $485,000$219/sqft |
Source: MARIS #25042109 Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $3,902 +9.3% | $55,100 +13.1% |
| 2024 | $3,568 +0.2% | $48,700 +0.4% |
| 2023 | $3,560 +6.4% | $48,500 +6.4% |
| 2022 | $3,346 +0.1% | $45,600 |
| 2021 | $3,344 +3.9% | $45,600 +10.4% |
| 2020 | $3,218 -0.1% | $41,300 |
| 2019 | $3,221 | $41,300 +2% |
| 2018 | $3,221 +5.5% | $40,500 |
| 2017 | $3,054 | $40,500 +7.1% |
| 2016 | $3,054 +7.6% | $37,800 +2.2% |
| 2015 | $2,837 | $37,000 +1.9% |
| 2013 | $2,837 | $36,300 +7.7% |
| 2005 | -- | $33,700 +12.3% |
| 2004 | -- | $30,000 |
| 2003 | -- | $30,000 +1.7% |
| 2002 | -- | $29,500 |
Find assessor info on the county website
Neighborhood: 63026
Nearby schools
GreatSchools rating
- 8/10George Guffey Elementary SchoolGrades: K-5Distance: 1.2 mi
- 8/10Ridgewood Middle SchoolGrades: 6-8Distance: 2.4 mi
- 5/10Fox Sr. High SchoolGrades: 9-12Distance: 4.1 mi
Schools provided by the listing agent
- Elementary: George Guffey Elem.
- Middle: Ridgewood Middle
- High: Fox Sr. High
Source: MARIS. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.
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Estimated market value
$560,100
Get a cash offer in 3 minutes
Find out how much your home could sell for in as little as 3 minutes with a no-obligation cash offer.
Estimated market value
$560,100
- Missouri
- Jefferson County
- Fenton
- 63026
- 421 Keystone Dr
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