OFF MARKET

Last listed at $389,900, closed on jul 2021

$455,011

•

2,714

sq ft

140 Keystone Rdg, O Fallon, MO 63366

About this home

Why wait to build when you can buy a 9 month old new build! This 2 story 4 bed/2.5 bath has been turned from builder grade to a custom home! Gorgeous floors throughout the main level. Walk into the large foyer, where you will find both an office area and separate dining area and butlers pantry. The kitchen with a extended quartz island and extra seating, upgraded cabinets, gorgeous backsplash, and shiplap throughout. Walk out of the kitchen dining area, onto a brand new Trex composite deck, backing to common ground and woods. Light fixtures have been upgraded throughout the home. Master bedroom has extra large walk in closet, double sinks and separate tub and shower, and remaining bedrooms upstairs are oversized rooms. OPEN HOUSE SATURDAY 5/22 11:30-1:30. PROFESSIONAL PHOTOS TO BE POSTED 5/20. SHOWINGS START ON 5/21.

Single-familyProperty Type

2020Year Built

9,017 sq ftLot Size

$168Est. Price/Sq.Ft.

2 garage spacesParking

Listed by Tracy Mazuranic • Ryse Realty Group

Bought with Nicole Flinn • DRG - Delhougne Realty Group

Redfin checked: a minute ago

•Source:MARIS as Distributed by MLS Grid #21030866

Redfin Estimate

$455,011

$65K over list price of $390K

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 2.1% higher than the average sale price ($446K) of 6 comparable homes.

SOLD OCT 15, 2026
$510,000
A
4 beds2 baths2,179 sq ft
332 Mystic Brook Dr, O Fallon, MO 63366
SOLD OCT 16, 2026
$375,000
B
4 beds2.5 baths2,000 sq ft
425 Dusty Brook Dr, O Fallon, MO 63366
SOLD JUL 16, 2026
$425,000
C
4 beds2.5 baths2,880 sq ft
225 Flint Brook Dr, O Fallon, MO 63366
SOLD AUG 13, 2026
$425,000
D
4 beds3 baths2,664 sq ft
393 Victory Height Dr, Wentzville, MO 63385
SOLD SEP 18, 2026
$440,000
E
4 beds2.5 baths2,947 sq ft
609 Sunny Pass Dr, Wentzville, MO 63385
SOLD AUG 21, 2026
$500,000
F
3 beds2.5 baths2,012 sq ft
345 Mystic Brook Dr, O Fallon, MO 63366

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Earn from this home

Sell

$426,809

Est. take-home

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Rent

$2,719/mo

Redfin rental estimate

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Market trends in 63366, MO

Last updated October 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

100.8%

0.8% MoM

Median sale price

$360K

$21K MoM

Avg. days on market

12d

2 days MoM

Recently sold homes

179

5 MoM

New listings for sale

COMING SOON
$325,000
3 beds3 baths2,447 sq ft
2 Turtle Creek Villas Dr, O'Fallon, MO 63366
COMING SOON
$739,900
6 beds3.5 baths4,260 sq ft
422 Coronation Dr, O Fallon, MO 63366
COMING SOON
$480,000
3 beds3 baths3,329 sq ft
1316 Presidents Landing Dr, O Fallon, MO 63366
$429,000
4 beds3 baths1,528 sq ft
3 Locust Hills Ct, O Fallon, MO 63366
OPEN SUN, 1PM TO 3PM
$250,000
3 beds1 bath1,210 sq ft
1128 Central Pkwy, O Fallon, MO 63366
$425,000
3 beds2 baths1,781 sq ft
1316 Whispering River Ct, Saint Paul, MO 63366
COMING SOON
$649,000
3 beds3 baths2,803 sq ft
857 Emge Rd, O Fallon, MO 63366
$795,000
3 beds3 baths4,000 sq ft
306 Walnut Forest Dr, O Fallon, MO 63366
$379,900
3 beds3.5 baths2,274 sq ft
503 Wycombe Dr, O Fallon, MO 63366
$529,900
4 beds2 baths2,600 sq ft
1600 Koch Rd, O Fallon, MO 63366
See all

Provided by Redfin

Sale history for 140 Keystone Rdg

Date

Event

Price

Public Records

Jul 26, 2021

Sold

$401,000

$148/sq ft

MARIS as Distributed by MLS Grid #21030866

May 24, 2021

Pending

—

May 20, 2021

Listed

$389,900

$144/sq ft

May 19, 2021

Coming Soon

$389,900

$144/sq ft

MARIS as Distributed by MLS Grid #20029864

May 24, 2020

Pending

—

May 6, 2020

Listed

$318,834

$117/sq ft

This Sequoia Two Story 4 bed 2.5 bath home is move in ready Summer 2020! Perfect for entertaining, the kitchen features a large square island with breakfast bar, open to the breakfast room and family room. Level 3 Sarsaparilla 42” tall cabinets, Argento Romano laminate countertops, and stainless steel GE appliances in kitchen. Formal living room and dining room. Master suite features massive walk-in closet and private bath with separate shower and large tub, window, adult height vanity w/ double sinks. Upgraded Wood Laminate Flooring and carpeting, 6ft windows on main floor, and six-panel white interior doors with satin nickel hardware throughout the home… there is no work to be done to move right in! The walkout lower level includes a ¾ bath rough-in for future finish. Keystone Ridge is a beautiful O’Fallon community off I-70 in the Fort Zumwalt North School District, featuring lush common ground, and minutes away from Quail Ridge Park. *Similar Home Shown in Photos*

Tax history for 140 Keystone Rdg

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Public record

Public record
Zoning
Permits

Beds

Baths

2.5

Stories

Lot width

—

Lot depth

—

Lot size

8,999 Sq. Ft.

Year renovated

—

Sq. Ft.

2,714

Year built

2020

Style

Single Family Residential

County

St. Charles County

APN

2-0048-C585-00-0063.0000000

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Oct 26, 2026.

R-1

PUD

Single-Family Residential District

This District is composed of those areas of the City whose principal use is and ought to be low-density single-family dwellings. The regulations of this District are designed to create and preserve a predominately urban character as evidenced by lot sizes, and street and drainage requirements. In addition to the dwelling permitted in this District, certain compatible recreational and public uses are conditionally allowed and strictly regulated to ensure harmony with the principal use of this District.

Zone overlays

Planned Unit Development District

Permitted uses

Include but are not limited to:

Housing-Single unit
Communications tower
Park & open space

Jun 13, 2023 • Final

Building-plumbing - sewer lateral / water service / lawn irrigation

Install a new irrigation system and backflow preventer.

Grading

Plumbing

Jan 30, 2021 • Final

Building-residential new construction - single- multi-family / mobile home / modular

New construction

Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.

Property details

Parking

Parking Information
Covered Spaces: 4
Parking Total: 2
Parking Features: Attached Garage
Garage Spaces: 2
Has Carport
Carport Spaces: 2
Has Attached Garage
Has Garage

Interior

Bedroom Information
# of Bedrooms: 4
# of Bedrooms Main: 0

Bathroom Information
# of Full Baths (Total): 2
# of Half Baths (Total): 1
# of Main Level Bathrooms (Total): 1
# of Main and Upper Bathrooms: 3
Main Level # of Half Bathrooms: 1

Basement Information
Has Basement
Basement Features: Concrete, Bath/Stubbed, Sump Pump, Unfinished, Walk-Out Access

Other Rooms Information
# of Rooms: 11

Heating & Cooling
Has Heating
Heating Information: Forced Air
Cooling Information: Electric

Interior Features
Interior Features: Walk-in Closet(s)
Appliances: Dishwasher, Disposal, Dryer, Electric Cooktop, Microwave, Refrigerator, Stainless Steel Appliance(s), Washer

Exterior

Building Information
Construction Materials: Vinyl Siding

Property Information
Ownership Type: Private
Property Type: Residential
Property Sub Type: Residential
Above Grade Finished Area: 2,714
Above Grade Finished Area Source: Public Records
Model: Sequoia

Lot Information
Lot Features: Backs to Comm. Grnd, Backs to Trees/Woods
Lot Size Acres: 0.207
Lot Size Dimensions: 8999
Lot Size Source: County Records

Financial

Tax Information
Tax Annual Amount: $719
Tax Year: 2019

Utilities

Utility Information
Water Source: Public
Sewer: Public Sewer

Location

HOA Information
Association Fee: $250
Association Fee Frequency: Annually

School Information
Elementary School: Flint Hill Elem.
Middle Or Junior High School: Ft. Zumwalt North Middle
High School: Ft. Zumwalt North High
High School District: Ft. Zumwalt R-II

Public facts

Beds: 4
Baths: 2.5
Sq. Ft.: 2,714
Stories: 2.0
Lot Size: 8,999 square feet
Style: Single Family Residential
Year Built: 2020
Year Renovated: —
County: St. Charles County
APN: 2-0048-C585-00-0063.0000000

Home facts updated by county records on Oct 26, 2026

Other

Listing Date Information
Expected Active Date: Wednesday, May 19, 2021

Home Information
Levels: Two

Around this home

Schools

Flint Hill Elementary

Public K-5 • Assigned • 4.3mi

7/10

Ft. Zumwalt North Middle School

Public 6-8 • Assigned • 4.5mi

8/10

Ft. Zumwalt North High School

Public 9-12 • Assigned • 6.0mi

9/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

4/10 Heat Factor

6 days above 107° expected this year, 17 days in 30 years

2/10 Wind Factor

1% chance of strong winds in next 30 years

1/10 Air Factor

0 unhealthy days expected this year, 0 days in 30 years

Provided by First Street

Historical weather

O Fallon, MO • 63366

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 9.7 hours in June and 4.2 hours in December, which is comparable to the U.S. average for solar exposure.

9.7 hrs

4.2 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$433,000 – $524,000

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Home values near 140 Keystone Rdg

Data from public records.

Address	Redfin Estimate
127 Keystone Ridge Dr, O Fallon, MO 3 Beds \| 2 Baths \| 1571 Sq. Ft.	$379,380
133 Keystone Ridge Dr, O Fallon, MO 3 Beds \| 2 Baths \| 1571 Sq. Ft.	$369,014

Address	Redfin Estimate
129 Keystone Ridge Dr, O Fallon, MO 3 Beds \| 3 Baths \| 2976 Sq. Ft.	$485,257
135 Keystone Ridge Dr, O Fallon, MO 3 Beds \| 2 Baths \| 1984 Sq. Ft.	$428,202

Address	Redfin Estimate
131 Keystone Ridge Dr, O Fallon, MO 4 Beds \| 2.5 Baths \| 2700 Sq. Ft.	$472,447
137 Keystone Ridge Dr, O Fallon, MO 3 Beds \| 2 Baths \| 1569 Sq. Ft.	$383,713

Property information provided by MARIS as Distributed by MLS Grid when last listed in 2021. This data may not match . Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 63366, MO

Sale history for 140 Keystone Rdg

Tax history for 140 Keystone Rdg

Public record

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 63366

Home values near 140 Keystone Rdg

More real estate resources