Listed by Katherine A Schroeder, ReeceNichols Real Estate, (636) 537-0300 . Bought with EXP Realty, LLC
503 Mark Twain Loop
Union, MO 63084
4 Beds
3.5 Baths
3,400 sqft (on 1 acre)
$489,500
as of Aug 9, 2026
$489,500
as of Aug 9, 2026
4 Beds
3.5 Baths
3,400 sqft
(on 1 acre)
Local Information
- Map ViewExplore the area around 503 Mark Twain Loop.
- Schools1 Preschool School1 Elementary School1 Middle School1 High School
- Shop & Eat
-- mins to
Home Highlights
Property Type
Single-Family Home
Year Built
1996
Lot Size
1 acre
Living Area
3,400 sqft
Price/Sqft
$144
Parking
3 Car Garage
HOA
$17/Monthly
About this House
If you love the outdoors & dream of that water view from a grand 30x12 wrap around deck to enjoy morning coffee or sit & wind down after a long day, this is just one of the perks you will get in this wonderful 2270 square foot home (3400 sq ft finished). Featuring 4 bedrooms, 3 full bathrooms & 1 powder room, you will also find a 2-story foyer, vaulted ceilings, and open open staircase with lots of windows for natural light. Wood floors throughout main floor (real and engineered), and a floor to ceiling brick wood burning fireplace. The formal dining room has crown molding, chair rail & a bay window. The kitchen and breakfast room include center island, pantry, built-in desk, stainless appliances, and glass door leading to the deck. The lower level is finished with a recreation/family room area and 2 additional sleeping areas/office space/exercise room. There is a 3 car garage and a stone patio around back. This home is perfect for entertaining and sits on just under 2 acres.
503 Mark Twain Loop, Union, MO 63084 is a 4 bedroom, 4 bathroom, 3,400 sqft single-family home built in 1996. It last sold for $437,500 on Jul 3, 2024 (2% below the $445,000 asking price). It is currently off market. The Trulia Estimate is $489,500, with a rent estimate of $2,837/month.
Home Details for 503 Mark Twain Loop
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MLS Status: Closed |
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Interior Details Basement: Sleeping Area,Walk-Out AccessNumber of Rooms: 9Types of Rooms: Primary Bedroom, Breakfast Room, Dining Room, Family Room, Great Room, Kitchen, Laundry, Other |
Beds & Baths Number of Bedrooms: 4Main Level Bedrooms: 1Number of Bathrooms: 4Number of Bathrooms (full): 3Number of Bathrooms (half): 1Number of Bathrooms (main level): 2 |
Dimensions and Layout Living Area: 3400 Square Feet |
Appliances & Utilities Utilities: Underground UtilitiesAppliances: Dishwasher, Disposal, Electric Cooktop, Microwave, Electric Range, Electric Oven, Refrigerator, Stainless Steel Appliance(s), Water Softener, Electric Water Heater, Water Softener RentedDishwasherDisposalLaundry: Main LevelMicrowaveRefrigerator |
Heating & Cooling Heating: Dual Fuel/Off Peak,Forced Air,Zoned,Electric,PropaneHas CoolingAir Conditioning: Ceiling Fan(s),Central Air,Electric,ZonedHas HeatingHeating Fuel: Dual Fuel Off Peak |
Fireplace & Spa Number of Fireplaces: 2Fireplace: Masonry, Ventless, Wood Burning, Basement, Great Room, Recreation RoomHas a Fireplace |
Windows, Doors, Floors & Walls Window: Skylight(s) |
Levels, Entrance, & Accessibility Levels: One and One Half |
Security Security: Smoke Detector(s) |
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Parking & Garage Number of Garage Spaces: 3Number of Covered Spaces: 3No CarportHas a GarageHas an Attached GarageParking Spaces: 3Parking: Additional Parking,Attached,Garage,Garage Door Opener |
Frontage Waterfront: WaterfrontRoad Surface Type: ConcreteNot on Waterfront |
Water & Sewer Sewer: Public Sewer |
Finished Area Finished Area (above surface): 2298 Square Feet |
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Cumulative Days on Market: 4 |
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Year Built Year Built: 1996 |
Property Type / Style Property Type: ResidentialProperty Subtype: Single Family ResidenceArchitecture: Other,Traditional |
Building Construction Materials: Brick Veneer, Vinyl Siding |
Property Information Parcel Number: 1741910005031260 |
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Price List Price: $445,000 |
Status Change & Dates Off Market Date: Wed Jul 03 2024Possession Timing: Close Of Escrow |
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Direction & Address City: UnionCommunity: Twin Lakes |
School Information Elementary School: Beaufort Elem.Jr High / Middle School: Union MiddleHigh School: Union HighHigh School District: Union R-XI |
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Building Area Building Area: 3400 Square Feet |
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Association for this Listing: St. Louis Association of REALTORSHOA Fee: $200/Annually |
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Lot Area: 1 Acres |
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Special Conditions: Standard |
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Contingencies: Subject to FinancingListing Terms: Cash, Conventional |
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Business Information Ownership: Private |
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BasementMls Number: 24012713Above Grade Unfinished Area: 2298Showing Requirements: Showing Service, Appointment Only, Lockbox |
Last check for updates: about 14 hours ago
Listed by Katherine A Schroeder, (636) 221-7950
ReeceNichols Real Estate
Bought with: Brian Sohn, (314) 401-1696, EXP Realty, LLC
Originating MLS: St. Louis Association of REALTORS
Source: MARIS, MLS#24012713
Price History for 503 Mark Twain Loop
| Date | Price | Event | Source |
|---|---|---|---|
| 07/03/2024 | -- | Sold | MARIS #24012713 |
| 05/06/2024 | $445,000 | Pending | MARIS #24012713 |
| 05/02/2024 | $445,000 | Listed For Sale | MARIS #24012713 |
| 04/17/2015 | -- | Sold | MARIS #14046782 |
| 03/07/2015 | $274,900 | Pending | Agent Provided |
| 01/07/2015 | $274,900 | PriceChange | Agent Provided |
| 11/11/2014 | $279,900 | PriceChange | Agent Provided |
| 08/15/2014 | $289,900 | Listed For Sale | Agent Provided |
| 04/22/2014 | $289,900 | ListingRemoved | Agent Provided |
| 02/24/2014 | $289,900 | Listed For Sale | Agent Provided |
| 05/02/2012 | $260,000 | ListingRemoved | Agent Provided |
| 03/14/2012 | $260,000 | Listed For Sale | Agent Provided |
| 01/09/2012 | $285,000 | ListingRemoved | Agent Provided |
| 09/14/2011 | $285,000 | PriceChange | Agent Provided |
| 08/09/2011 | $299,000 | Listed For Sale | Agent Provided |
Market trends in Union
Last updated June 2026
Avg. sale price
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Sale-to-List Price
—
Price per sq ft
—
Available listings
40
2MoM
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Property Tax and Assessment
| Year | 2024 |
|---|---|
| Tax | $3,121 |
| Assessment | $307,760 |
Home facts updated by county records
Comparable Sales for 503 Mark Twain Loop
Address | Distance | Property Type | Sold Price | Sold Date | Bed | Bath | Sqft |
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0.15 | Single-Family Home | - | 12/02/25 | 3 | 3 | 1,796 | |
0.30 | Single-Family Home | - | 01/29/26 | 3 | 2 | 2,738 | |
0.39 | Single-Family Home | - | 01/09/26 | 3 | 2 | 1,200 | |
0.34 | Single-Family Home | - | 12/03/25 | 3 | 2 | 1,250 | |
0.85 | Single-Family Home | - | 06/05/26 | 3 | 2 | 1,536 | |
1.53 | Single-Family Home | - | 12/08/25 | 4 | 3 | 2,472 | |
1.27 | Single-Family Home | - | 08/13/25 | 4 | 3.5 | 1,963 | |
1.70 | Single-Family Home | - | 05/29/26 | 4 | 3 | 1,806 | |
1.78 | Single-Family Home | - | 05/06/26 | 3 | 3 | 2,892 | |
1.18 | Single-Family Home | - | 09/24/25 | 3 | 2 | 1,965 |
Nearby homes
Get a sense of prices in the area by checking nearby homes.
OFF MARKETReeceNichols Real Estate
OFF MARKETRE/MAX Exclusive Properties
Assigned Schools
These are the assigned schools for 503 Mark Twain Loop.
- Central Elementary School
- PK-5
- Public
- 643 Students
8/10GreatSchools RatingParent Rating AverageThis school has the potential to be great. They have great teachers for the most part. 3 out of the 4 teachers we have encountered with my son have helped him flourish instead of bring him down to be the same as the other students to make it easier. They have shoved so many children in these classrooms that they all get lost in the mix. No individualized teaching can happen. No leeway or expectations made to better students that need it. We have taken my son out of this school to help him to the best of our ability.Parent Review7y ago - Union High School
- 9-12
- Public
- 956 Students
5/10GreatSchools RatingParent Rating AverageAttended Union R-XI from K-12. I went on to graduate from a top 100 university on the East Coast. The school district serves its purpose to conduct general basic education to small town and rural kids. I would not move to the area to attend Union schools. My parents worked in town, so our options were Union or Borgia is Washington (I am not Catholic). I was lucky to have parents that spent money to send me to camps and other enrichment activities. Otherwise, I would have fallen short on college prep. Now, I live in St. Louis County and I’m selective about where I reside. Currently, my primary residence is located in the Rockwood School District. I’m giving the district 3/5 because they serve a purpose and provide general education.Other Review1y ago - Union Middle School
- 6-8
- Public
- 704 Students
9/10GreatSchools RatingParent Rating AverageSingle parent and longtime educator (20 years) here. If you have the option to send your children to a different school, I would not hesitate. I am in the process of withdrawing my own child due to the severity of the bullying they have experienced. The incidents have become so intense and traumatic that they border on abuse.Despite multiple formal bullying reports and repeated conversations with the principal, superintendent, and school counselor, I have seen no meaningful action taken to protect my child or address the situation. The lack of follow-through has been deeply alarming.In addition, many faculty members appear overworked, overwhelmed, or simply unwilling to intervene. Their responses to serious concerns often default to the dismissive “just ignore it,” which is not only ineffective but harmful.As both a parent and an educator, I expect a school environment that is safe, responsive, and supportive. Unfortunately, this has not been our experience.Parent Review8mo ago 
Check out schools near 503 Mark Twain Loop.
What Locals Say about Union
At least 71 Trulia users voted on each feature.
92 % Say car is needed
89 % Say parking is easy
79 % Say yards are well-kept
76 % Say kids play outside
71 % Say there's holiday spirit
67 % Say people would walk alone at night
66 % Say it's dog friendly
57 % Say it's quiet
48 % Say streets are well-lit
47 % Say it's walkable to grocery stores
46 % Say they plan to stay for at least 5 years
45 % Say neighbors are friendly
43 % Say there are sidewalks
42 % Say there's wildlife
39 % Say it's walkable to restaurants
19 % Say there are community events
Sourced by Trulia users. Learn more about our methodology.
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Frequently asked questions about 503 Mark Twain Loop
- What is 503 Mark Twain Loop estimated to be worth?Trulia's estimated value for 503 Mark Twain Loop in Union, MO is $489,500.
- What is the price history for 503 Mark Twain Loop?503 Mark Twain Loop in Union, MO last sold in July 2024.
- Is Union a buyer's or seller's market?Union is currently a seller's market, based on recent for-sale activity.
- What do residents say about Union?Residents describe Union, MO as easy to park in, well-kept, and dog-friendly. Most residents say you need a car. See recently sold homes in Union, MO.
- Does 503 Mark Twain Loop have air conditioning?Yes, 503 Mark Twain Loop in Union, MO has air conditioning.
- Does 503 Mark Twain Loop have laundry facilities?Yes, 503 Mark Twain Loop in Union, MO has laundry facilities.
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