421 Keystone Dr

2,210 Sq. Ft.
$244 / Sq. Ft.
2,210
Sq. Ft.
$244
per Sq. Ft.

Description

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...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!
  1. Listed by Michael Wood • Realty Executives of St. Louis

Property Details for 421 Keystone Drive

Architectural Style
Traditional
Waterfront
No
LISTING UPDATED: 08/14/2025 10:24 AM

Property Details for 421 Keystone Drive

StatusClosed
MLS #25042109
Days on Market6
Taxes$3,568 / year
HOA Fees$500 / year
Condo/Co-op Fees-
Compass TypeSingle Family
MLS TypeResidential / Single Family Residence
Year Built1999
Lot Size-
CountyJefferson County

Location

Listing Courtesy of Realty Executives of St. Louis

Sold By Byrne & Associates Real Estate LLC

Add your commute

Building Information for 421 Keystone Drive

Stories-Year Built1999Building Size-Lot Size-

Payment Calculator

$2,971 per month

30 year fixed, 6.15% Interest

Principal and Interest

$2,632

Property Taxes

$297

HOA Dues

$42

The Payment Calculator is for illustrative purposes only.

Property Information for 421 Keystone Drive

Summary
Location and General Information
  • City: Fenton
  • County Or Parish: Jefferson
  • Latitude: 38.49081246
  • Longitude: -90.42581662
  • Postal Code: 63026
  • State Or Province: MO
  • Sub division Name: Winter Valley 03
Taxes and HOA Information
  • List AOR: St. Louis Association of REALTORS
  • Association Fee: $500.00
  • Association Fee Frequency: Annually
  • Association Fee Includes: Maintenance Parking/Roads, Common Area Maintenance, Snow Removal
  • Parcel Number: 02-1.0-02.0-4-001-066
  • Tax Annual Amount: $3,568.00
  • Tax Year: 2024
Owner
  • Township: Unincorporated
Parking
  • Attached Garage: Yes
  • Carport: No
  • Garage Spaces: 2.0
  • Garage: Yes
  • Parking Features: Attached, Concrete
School Information
  • Elementary School: George Guffey Elem.
  • High School: Fox Sr. High
  • High School District: Fox C-6
  • Middle Or Junior School: Ridgewood Middle
Virtual Tour
Property
Lot Information
  • Lot Features: Adjoins Common Ground, Back Yard, Cul-De-Sac, Front Yard, Landscaped, Some Trees, Sprinklers In Front, Sprinklers In Rear
  • Lot Size Acres: 0.52
  • Lot Size Dimensions: 82x163x124x228
  • Lot Size Source: Public Records
  • Property Sub Type: Single Family Residence
  • Property Type: Residential
Property and Assessments
  • Above Grade Finished Area: 2210.0
  • Above Grade Finished Area Source: Estimated
  • Documents Available: Boundary Survey,Floor Plan,Lead Based Paint
  • Documents Count: 7
  • Photos Count: 62
  • Year Built: 1999
  • Disclosures: Flood Plain No,HOA/Condo Disclosure Available,Lead Paint,See Seller's Disclosure
  • Construction Materials: Brick Veneer, Vinyl Siding
Utilities
  • Sewer: Public Sewer
  • Utilities: Electricity Connected
Interior and Exterior Features
Exterior Features
  • Association Amenities: Association Management, Common Ground
  • Fencing: Fenced
  • Roof: Architectural Shingle
  • Pool Private: Yes
Interior Features
  • Basement: Bathroom, Partially Finished, Radon Mitigation, Sleeping Area, Storage Space, Sump Pump, Walk-Out Access
  • Basement YN: Yes
  • Levels: Two
  • Main Level Bedrooms: 0.0
  • Bathrooms Full: 3
  • Bathrooms Half: 1
  • Bathrooms Total Integer: 4
  • Bedrooms Total: 4
  • Cooling: Central Air
  • Fireplace Features: Great Room
  • Fireplaces Total: 1
  • Fireplace: Yes
  • Heating: Forced Air, Natural Gas
  • Interior 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
  • Rooms Total: 14

Property History for 421 Keystone Drive

DateEvent & SourcePriceAppreciation
Aug 13, 2025

Closed

MARIS #25042109

$540,000—
Jul 13, 2025

Pending

MARIS #25042109

—
Jul 7, 2025

Listed (Active)

MARIS #25042109

$485,000—
Mar 19, 2007

Closed

MARIS #703812

$269,000—
Feb 25, 2007

Pending

MARIS #703812

—
Jan 18, 2007

Listed (Active)

MARIS #703812

$275,000—
DateEvent & SourcePrice
08/13/2025

Closed

MARIS #25042109

$540,000
07/13/2025

Pending

MARIS #25042109

—
07/07/2025

Listed (Active)

MARIS #25042109

$485,000
03/19/2007

Closed

MARIS #703812

$269,000
02/25/2007

Pending

MARIS #703812

—
01/18/2007

Listed (Active)

MARIS #703812

$275,000

For completeness, Compass often displays two records for one sale: the MLS record and the public record.

Public Records for 421 Keystone Drive

Taxable ValueLand$9,600Additions$45,500Total$55,100
Home Facts
Beds0Baths2.5Total Finished SqFt1,157 SqFtAbove Grade Finished SqFt1,157 SqFtStories2Lot Size22,651 SqFtStyleSingle Family ResidenceYear Built1999ZoningPUDCountyJEFFERSONAPN02-1.0-02.0-4-001-066.Fireplace TypeHas Fireplace

Schools near 421 Keystone Drive

This home is within Fox C-6 School District.
Rating
School
Type
Grades
Distance
Public - K to 5
Public - 6 to 8
Public - 9 to 12
Public - K to 5
Rating
School
Distance
George Guffey Elementary School
PublicK to 5

Ridgewood Middle School
Public6 to 8

Fox Sr. High School
Public9 to 12

Sherwood Elementary School
PublicK to 5

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

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Listing Courtesy of Realty Executives of St. Louis

Based on information submitted to the MLS GRID as of 08/14/2025 10:24 AM. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Properties displayed may be listed or sold by various participants in the MLS. IDX information is provided exclusively for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data is deemed reliable but is not guaranteed by MLS GRID. Use of the MLS GRID data may be subject to an end user license agreement prescribed by the applicable MLS of the Member Participant, if any, and as amended from time to time.