509 Harmony Ln, O'Fallon, MO 63366
Property image
Property image
OFF MARKET
Listed by Justin Michael, Dielmann Sotheby's International Realty, (314) 725-0009 . Bought with Keller Williams Realty West

$289,900

Trulia Estimate
  • 2 Beds
  • 2 Baths
  • 1,836 sqft (on 0.26 acres)

509 Harmony Ln, O'Fallon, MO 63366

Est. Refi. Payment $1,819/mo*
Refinance Your Home

Home Value

Trulia Estimate
$290K
Since last month
Increased$2K (+0.7%)
Since last year
Increased$19K (+6.8%)
Since last sale
Increased$25K (+9.2%)
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 +106% in the last 10 years
MonthEstimated value
2026
August 2026$290K
July 2026$288K
June 2026$294K
May 2026$296K
April 2026$293K
March 2026$289K
February 2026$284K
January 2026$278K
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
38 Country Life Dr, O'Fallon, MO
0.10
Single-Family Home
-
08/07/26
3
2
1,805
309 E Pitman St, O Fallon, MO
0.26
Single-Family Home
-
04/06/26
2
2
1,525
85 Country Life Dr, O Fallon, MO
0.35
Single-Family Home
-
12/09/25
2
2
1,732
103 Country Life Dr, O'Fallon, MO
0.29
Single-Family Home
-
11/17/25
3
2
1,693
21 Saali Dr, O'Fallon, MO
0.20
Single-Family Home
-
12/30/25
3
2
1,248
502 Boyer St, O'Fallon, MO
0.04
Single-Family Home
-
11/19/25
3
1
1,143
814 Molloy Dr, O'Fallon, MO
0.38
Single-Family Home
-
09/26/25
3
2
1,524
846 Molloy Dr, O'Fallon, MO
0.38
Single-Family Home
-
06/22/26
3
2
1,433
501 Wycombe Dr, O'Fallon, MO
0.41
Single-Family Home
-
11/20/25
3
2
1,300

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
22 Country Life Dr, O'Fallon, MO 63366
0.09
$256,400
3
1
972
Off Market
502 Boyer St, O'Fallon, MO 63366
0.04
-
3
1
1,143
Recently Sold
31 Country Life Dr, O'Fallon, MO 63366
0.09
$240,100
3
1
976
Off Market
36 Hollywood Dr, O'Fallon, MO 63366
0.08
$194,200
2
1
720
Off Market
439 Vine St, O'Fallon, MO 63366
0.08
-
3
1
1,062
Recently Sold
36 Country Life Dr, O'Fallon, MO 63366
0.09
$260,800
4
2
2,264
Off Market
38 Country Life Dr, O'Fallon, MO 63366
0.10
-
3
2
1,805
Recently Sold
506 Lindenwood Ave, O'Fallon, MO 63366
0.10
$284,500
3
1.5
1,690
Off Market
522 Lindenwood Ave, O'Fallon, MO 63366
0.12
$313,400
3
2
2,002
Off Market
501 Dardenne Dr, O'Fallon, MO 63366
0.13
$291,200
3
2.5
1,476
Off Market
18 Di Franco Ln, O'Fallon, MO 63366
0.19
$239,600
3
2
1,036
Off Market

Local Information

  • Map ViewExplore the area around 509 Harmony Ln.
  • Schools2 Elementary Schools1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1951
Lot Size
0.26 acres
Living Area
1,836 sqft
Price/Sqft
$158
Parking
1 Carport Spaces

About this House

This two-bed, two-bath gem boasts 1,836 of total square feet of comfort. Enjoy the open and airy layout, perfect for entertaining, with a generous living room featuring ample natural light. The large eat-in kitchen is a entertainer's dream. The primary en suite is accompanied by two more well-proportioned bedrooms and another full-bath. Retreat to the finished lower level, boasting expansive recreational space and a possible extra bedroom. Outside, the fenced-in backyard offers privacy and room to roam. Conveniently located just minutes from restaurants, shopping and more. A perfect blend of comfort and convenience!
509 Harmony Ln, O'Fallon, MO 63366 is a 2 bedroom, 2 bathroom, 1,836 sqft single-family home built in 1951. It last sold for $265,000 on Apr 25, 2024 (6% above the $250,000 asking price). This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $289,900, with a rent estimate of $1,953/month.

Home Details for 509 Harmony Ln

Active Status

MLS Status: Closed

Interior Features

Interior Details
Basement: Partially Finished,Sleeping Area,Storage Space,FullNumber of Rooms: 5
Beds & Baths
Number of Bedrooms: 2Main Level Bedrooms: 2Number of Bathrooms: 2Number of Bathrooms (full): 2Number of Bathrooms (main level): 2
Dimensions and Layout
Living Area: 1836 Square Feet
Appliances & Utilities
Appliances: Gas Water Heater
Heating & Cooling
Heating: Natural Gas,Forced AirHas CoolingAir Conditioning: Central Air,ElectricHas HeatingHeating Fuel: Natural Gas
Fireplace & Spa
Fireplace: NoneNo Fireplace
Windows, Doors, Floors & Walls
Window: Window TreatmentsFlooring: Hardwood
Levels, Entrance, & Accessibility
Levels: OneFloors: Hardwood

Exterior Features

Exterior Home Features
Other Structures: Shed(s)
Parking & Garage
Number of Carport Spaces: 1Number of Covered Spaces: 1Has a CarportNo GarageNo Open ParkingParking Spaces: 1Parking: Covered
Frontage
Road Surface Type: AsphaltNot on Waterfront
Water & Sewer
Sewer: Public Sewer
Finished Area
Finished Area (above surface): 1236 Square FeetFinished Area (below surface): 800 Square Feet

Days on Market

Cumulative Days on Market: 3

Property Information

Year Built
Year Built: 1951
Property Type / Style
Property Type: ResidentialProperty Subtype: Single Family ResidenceArchitecture: Traditional,Ranch
Building
Construction Materials: Brick Veneer, Frame
Property Information
Parcel Number: 2056B4383000032.0000000

Price & Status

Price
List Price: $250,000
Status Change & Dates
Off Market Date: Thu Apr 25 2024Possession Timing: Close Of Escrow

Location

Direction & Address
City: O'FallonCommunity: Patton Sub
School Information
Elementary School: Forest Park Elem.Jr High / Middle School: Ft. Zumwalt North MiddleHigh School: Ft. Zumwalt North HighHigh School District: Ft. Zumwalt R-II

Building

Building Area
Building Area: 1836 Square Feet

HOA

Association for this Listing: St. Louis Association of REALTORS

Lot Information

Lot Area: 0.26 acres

Listing Info

Special Conditions: Standard

Offer

Listing Terms: Cash, Conventional

Business

Business Information
Ownership: Private

Miscellaneous

BasementMls Number: 24011146Above Grade Unfinished Area: 1236Showing Requirements: Showing Service, Appointment Only, Lockbox

Price and Tax history

DateEventPrice
Apr 25, 2024
Source: MARIS #24011146
Sold
--
Mar 24, 2024
Source: MARIS #24011146
Pending
$250,000
Mar 21, 2024
Source: MARIS #24011146
Listed For Sale
$250,000
Jun 15, 2023
Source: MARIS #23024800
Sold
--
May 15, 2023
Source: MARIS #23024800
Pending
$225,000

Market trends in O Fallon

Last updated July 2026
Buyer'sMarketSeller'sMarket
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.
  • Savannahep
    "Good parks. Feels safe. Everything you need is close by: grocery stores, gas stations, restaurants. "
    0
    Flag
  • Katie M Gough
    "My town is about 45 minutes from the city of St. Louis. It has access to all three major highways through St. Charles County. "
    0
    Flag
  • Roshan Bhattarai
    "Friendly neighbors, great community. Safe for the family. We are happy to find such a good place to live."
    0
    Flag
  • Miah Berka
    "It’s a fantastic place to raise a family. I feel safe & protected since living here. There are times I forget to lock my doors & I am not worried one bit. I feel like my area is very friendly as well!"
    0
    Flag
  • Trulia User
    "Safe neighbors , clean city, some great parks and lots of activities such as food. Shopping, schools are good"
    0
    Flag
  • Erellis81
    "My commute is down a country road into Defiance which is relatively quiet and peaceful. There’s definitely more homes popping up so more cars are around "
    0
    Flag
  • Candice Brown
    "Feels like Pleasantville living in this area all the neighbors are friendly and welcoming I love living here."
    0
    Flag
  • Melody Bridges
    "Quaint and affordable (if that is possible in this economy) and perfect for a family or single person. "
    0
    Flag
  • Lmedlin0101
    "Way too populated, really high taxes and high crime rate. Expensive utilities. I do not recommend living here. "
    1
    Flag
  • Ashley M.
    "Great schools Safe neighborhoods Resturants Larks are great and trails. It’s a great place to raise a family "
    0
    Flag
  • Brittany0628
    "This area is great bc it’s quaint but still near everything you want. Just off north main st. Fire dept is super close, Walgreens at the corner! It’s great!"
    0
    Flag
  • Ben C.
    "It’s nice with multiple dog parks around the area. There’s a lot to do with your pets and I think anyone with a dog would find plenty to do"
    0
    Flag
  • Couponshaneygirls
    "A constant barking outside dog. Other than that, it is ok. Not many sidewalks. You would have to use the middle of the streets! "
    0
    Flag
  • Jeff T.
    "It’s great here, I just love the neighborhood and the people here. Our elementary school could be better but it’s the only bad rated one in the entire school district. "
    0
    Flag
  • Shannon P.
    "We see people walking their dogs all the time. Just pick up your poop! She did parks available, multiple vets, daycares and groomers. "
    0
    Flag
  • Wehrehsvave
    "There are many friendly families in the area and respectful children. Would recommend to anyone to live here! "
    0
    Flag
  • Christopher P.
    "nice area with access to everything you could want. really close to shopping centers in Chesterfield. wentzville area is just down the road. school district is great and the teacher this far have been amazing. "
    0
    Flag
  • Kathy D. S.
    "It is such a vibrant Neighborhood! I’m so glad I moved my elderly Mother here! We feel so safe! And everyone takes pride in their homes and keeping the Neighborhood looking great!"
    1
    Flag
  • Kyra.chap
    "The O'Fallon Freedom Fest is a fun local event held once a year that is looked forward to by children and adults alike. "
    0
    Flag
  • Carole S.
    "Nothing happens as far as get together in the area I believe at one time people would get together but not any more area is changing too much low income housing"
    0
    Flag
  • Lisa D.
    "Easy access to all major highways easy commute for all locations. Love the neighborhood. Close to food and shopping. "
    0
    Flag
  • Trudence T.
    "My neighborhood is quite friendly and nice....filled with great shopping and eating places....comfortable living Beautiful surroundings. "
    0
    Flag
  • Jennifermerzlicker
    "I am a stay at home mom so I don’t commute anywhere. We are convenient to highways though and there are a ton of options for shopping and eating."
    0
    Flag
  • Trulia User
    "You see people walking their dogs all the time and there are areas to dispose of your dog’s waste. People tend to drive too fast."
    0
    Flag
  • Diana M.
    "Everything is close and I really enjoy being in proximity to everything, but the feel of not being in a big city."
    0
    Flag
  • Mxfx
    "Lots of beige plastic siding can be seen in every direction. It’s really quite comforting to know that everyone else in my neighborhood is just like me. Diversity is overrated. "
    0
    Flag
  • Meghan F.
    "I’ve lived here most of my life and love the safe community and schools. My daughters both love their school and I feel good about sending them daily "
    1
    Flag
  • Chasity J.
    "OFallon is a great city with a small town feel. i feel safe here, feel safe to go to any part of OFallon. You can live in a subdivision or you can find plenty of homes on 1 to 30 acres on these outskirts of town and only be 5 to 10 from large malls, mini malls and just about every well known stores or small local stores. During rush hour traffic can get a little backed up but it's only a 10 minute backup at most. "
    0
    Flag
  • Deneen S.
    "Great place to raise your kids the school district is great. People for the most part are friendly. Great atmosphere "
    0
    Flag
  • Slw2364
    "family's are friendly and have lots of get togethers. there is a neighborhood easter egg hunt, 4th of july social, movie nights and lots of trick or treats at Halloween. "
    0
    Flag
  • Natkor03
    "Everyone is friendly!! Dogs are always on a leash if they are being walked. If they aren't on a leash they are well trained and stay in their front yards. "
    0
    Flag
  • Amy
    "There are lots of communal events in Twin Chimneys, and in OFallon in general. It’s a large suburban town, but close enough to St. Louis that it’s easy to head in for a Cards game, etc. Great value for the $$$ out here."
    0
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  • carly s
    "tons of options when it comes to kid friendly holiday themed events and even non holiday oriented activities. shopping/dining/movies/parks and more, all less than 10 minute drive depending on what you're looking for"
    0
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  • Rashae C.
    "I enjoy this area very family friendly! very peaceful, I would walk outside any time if day or night."
    0
    Flag
  • Cindydodd
    "We have lived in Monticello West for 16 years and love it! People keep up their homes, it’s quiet, and close to everything! "
    0
    Flag
  • Tlbourn1549
    "Very neighbor friendly. Everyone looks out for one another. Long time residents along with others on our street. "
    0
    Flag
  • Copgal1953
    "Wonderful area for walking dogs. There are dog waste receptacles on just about every corner. Owners for the most part keep their dogs on a leash. "
    0
    Flag
  • Wynterwebb S.
    "All of the fairs are held walking distance away. Good people and layed back atmosphere. We are all very happy with this neighborhood"
    1
    Flag
  • Megan K.
    "Friendly people and family focused with neighborhood get-togethers and a neighborhood pool and tennis courts. "
    0
    Flag
  • Katherineb m.
    "Yes! Plenty of places to walk and many options for dogs of all sizes and abilities. Paved or unpaved and flat or hiking all avalible within a short distance. "
    0
    Flag

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Frequently asked questions about 509 Harmony Ln

  • What is 509 Harmony Ln estimated to be worth?
    Trulia's estimated value for 509 Harmony Ln in O'Fallon, MO is $289,900.
  • What is the price history for 509 Harmony Ln?
    509 Harmony Ln in O'Fallon, MO last sold in April 2024.
  • 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.
  • Does 509 Harmony Ln have air conditioning?
    Yes, 509 Harmony Ln in O'Fallon, MO has air conditioning.
  • How big is the lot at 509 Harmony Ln?
    The lot at 509 Harmony Ln in O'Fallon, MO is about 0.26 acres (11,282 sq ft).

Explore by feature - Pet Friendly

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Explore by feature - Outdoor Space

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