$541,200
- 4 Beds
- 2.5 Baths
- 3,483 sqft (on 0.26 acres)
421 Saint Gemma Dr, O'Fallon, MO 63366
Est. Refi. Payment $3,358/mo*
Refinance Your HomeHome Value
Trulia Estimate
$541KSince last month
Decreased$2K (-0.3%)Since last year
Increased$17K (+3.3%)Since last sale
Increased$218K (+67%)Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.
Trulia Estimate
The of this home's value increased by +58% in the last 10 years
| Month | Estimated value |
|---|---|
2026 | |
| August 2026 | $543K |
| August 2026 | $542K |
| July 2026 | $545K |
| June 2026 | $549K |
| May 2026 | $549K |
| April 2026 | $546K |
| March 2026 | $542K |
| February 2026 | $531K |
| January 2026 | $515K |
2025 | |
2024 | |
2023 | |
2022 | |
2021 | |
2020 | |
2019 | |
2018 | |
2017 | |
2016 | |
Comparable sales
These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.Address | Distance | Property Type | Sold Price | Sold Date | Bed | Bath | Sqft |
|---|---|---|---|---|---|---|---|
0.03 | Single-Family Home | - | 10/09/25 | 4 | 3 | 3,260 | |
0.23 | Single-Family Home | - | 04/23/26 | 4 | 3 | 3,704 | |
0.49 | Single-Family Home | - | 05/01/26 | 4 | 2.5 | 3,046 | |
0.47 | Single-Family Home | - | 05/18/26 | 4 | 2.5 | 2,748 | |
0.45 | Single-Family Home | - | 06/19/26 | 4 | 3.5 | 3,500 | |
0.48 | Single-Family Home | - | 04/09/26 | 4 | 2.5 | 2,211 | |
0.50 | Single-Family Home | - | 03/30/26 | 3 | 3.5 | 3,626 | |
0.58 | Single-Family Home | - | 05/13/26 | 3 | 3 | 2,775 | |
0.47 | Single-Family Home | - | 02/12/26 | 3 | 3 | 3,263 | |
0.56 | Single-Family Home | - | 09/12/25 | 3 | 2.5 | 2,730 |
Nearby home prices
Get a sense of expected prices in the area by checking the value of nearby homes.Address | Distance | Price | Bed | Bath | Sqft | Status |
|---|---|---|---|---|---|---|
0.03 | $499,100 | 4 | 3 | 3,260 | Off Market | |
0.07 | $552,600 | 6 | 3.5 | 4,080 | Off Market | |
0.10 | $428,700 | 3 | 3 | 2,255 | Off Market | |
0.13 | $521,200 | 4 | 3 | 3,663 | Off Market | |
0.14 | $655,800 | 4 | 3.5 | 2,683 | Off Market | |
0.16 | $446,600 | 4 | 2.5 | 2,770 | Off Market | |
0.19 | $599,900 | 6 | 4.5 | 3,969 | For Sale | |
0.23 | $415,000 | 3 | 2 | 1,761 | For Sale | |
0.23 | - | 4 | 3 | 3,704 | Recently Sold | |
0.28 | $355,300 | 3 | 3 | 2,083 | Off Market | |
0.28 | $508,700 | 5 | 4.5 | 4,500 | Off Market | |
0.29 | $511,200 | 5 | 3 | 2,292 | Off Market |
Local Information
-- mins to
Home Highlights
Single-Family Home
Built in 2006
0.26 acre lot
3,483 sqft
$155/sqft
Garage
About this House
This single-family home is located at 421 Saint Gemma Dr, O'Fallon, MO. 421 Saint Gemma Dr is in O'Fallon, MO and in ZIP code 63366. This property has 4 bedrooms, 3 bathrooms and approximately 3,483 sqft of floor space. This property has a lot size of 0.26 acres and was built in 2006.
421 Saint Gemma Dr, O'Fallon, MO 63366 is a 4 bedroom, 3 bathroom, 3,483 sqft single-family home built in 2006. It last sold for $325,000 on Apr 27, 2017. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $541,200, with a rent estimate of $3,065/month.
Home Details for 421 Saint Gemma Dr
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Interior Details BasementNumber of Rooms: 9 |
Levels, Entrance, & Accessibility Stories: 2 |
Fireplace & Spa Fireplace |
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Year Built Year Built: 2006 |
Property Type / Style Property Type: Single Family HomeArchitecture: split level |
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Exterior Home Features Exterior: Other, Stone |
Parking & Garage GarageParking: Garage Attached |
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Lot Area: 0.26 acres |
Price and Tax history
| Date | Event | Price |
|---|---|---|
Apr 27, 2017 Source: MARIS #16070266 | Sold | -- |
Mar 6, 2017 Source: Agent Provided | Pending | $330,900 |
Mar 3, 2017 Source: Agent Provided | PriceChange | $330,900 Price decreased by 1% |
Feb 10, 2017 Source: Agent Provided | PriceChange | $335,900 Price decreased by 1% |
Oct 6, 2016 Source: Agent Provided | PriceChange | $340,000 Price decreased by 3% |
Sep 8, 2016 Source: Agent Provided | Listed For Sale | $350,000 |
May 10, 2006 Source: N/A | Sold | -- |
| Year | Property tax | Tax assessment |
|---|---|---|
| 2025 | $6,254 | $514,305 |
Home facts updated by county records
Market trends in O Fallon
Last updated July 2026
Avg. sale price
$376K
$6.55KMoM
Sale-to-List Price
100.4%
0.3%MoM
Price per sq ft
$181
$4MoM
Available listings
276
10MoM
Around this home
What Locals Say about O Fallon
At least 269 Trulia users voted on each feature.
91 % Say car is needed
90 % Say it's dog friendly
90 % Say parking is easy
83 % Say kids play outside
82 % Say yards are well-kept
79 % Say there are sidewalks
78 % Say people would walk alone at night
77 % Say there's holiday spirit
72 % Say streets are well-lit
67 % Say it's quiet
57 % Say neighbors are friendly
47 % Say there's wildlife
47 % Say they plan to stay for at least 5 years
36 % Say it's walkable to restaurants
36 % Say there are community events
31 % Say it's walkable to grocery stores
Sourced by Trulia users. Learn more about our methodology.
LGBTQ Local Legal Protections
LGBTQ Local Legal Protections
Frequently asked questions about 421 Saint Gemma Dr
- What is 421 Saint Gemma Dr estimated to be worth?Trulia's estimated value for 421 Saint Gemma Dr in O'Fallon, MO is $541,200.
- What is the price history for 421 Saint Gemma Dr?421 Saint Gemma Dr in O'Fallon, MO last sold in April 2017.
- Is O'Fallon a buyer's or seller's market?O'Fallon is currently a seller's market, based on recent for-sale activity.
- What's the median sale price in O'Fallon?The median sale price in O'Fallon is $376K. That is up $6.55K from the prior month.
- How big is the lot at 421 Saint Gemma Dr?The lot at 421 Saint Gemma Dr in O'Fallon, MO is about 0.26 acres (11,238 sq ft).
- Does 421 Saint Gemma Dr have a garage?Yes, 421 Saint Gemma Dr in O'Fallon, MO has a garage.

