1121 S Main St, Unit 406

St. Charles, MO 63301

$825,000
Price
2
Beds
1,544 Sq. Ft.
$534 / Sq. Ft.
1,544
Sq. Ft.
$534
per Sq. Ft.

Description

To be built! Elevate your lifestyle at The Augusta on Main, where timeless charm meets elevated modern luxury. This exclusive 2-bedroom, 2-bathroom penthouse offers an unparalleled living experience in the heart of Historic Main Street, St. Charles—just steps from vibrant restaurants, boutique shops, and riverfront trails. Every detail in this top-floor residence has been thoughtfully designed, from the soaring ceilings and expansive windows to the designer finishes and hand-selected materials that...To be built! Elevate your lifestyle at The Augusta on Main, where timeless charm meets elevated modern luxury. This exclusive 2-bedroom, 2-bathroom penthouse offers an unparalleled living experience in the heart of Historic Main Street, St. Charles—just steps from vibrant restaurants, boutique shops, and riverfront trails. Every detail in this top-floor residence has been thoughtfully designed, from the soaring ceilings and expansive windows to the designer finishes and hand-selected materials that bring both comfort and sophistication to every space. The chef-inspired kitchen features stainless steel appliances, quartz countertops, and custom cabinetry that opens seamlessly into a light-filled living and dining area—perfect for entertaining or relaxing in refined comfort. This penthouse also includes dedicated parking, access to an on-site fitness center, and an exclusive rooftop deck with sweeping views of downtown St. Charles—ideal for enjoying coffee at sunrise or cocktails at sunset. Starting at $825,000, this is your opportunity to own a one-of-a-kind penthouse in one of the region’s most desirable walkable neighborhoods. Only 4 units available.
  1. Listed by Katie McLaughlin • Dielmann Sotheby's International Realty

Property Details for 1121 South Main Street, Unit 406

Architectural Style
High-Rise-4+ Stories
Cross Street
Reservoir Ave
LISTING UPDATED: 11/22/2025 10:01 AM

Property Details for 1121 South Main Street, Unit 406

StatusActive
MLS #25051588
Days on Market185
Taxes-
HOA Fees$562 / month
Condo/Co-op Fees-
Compass TypeCondo
MLS TypeResidential / Condominium
Year Built2025
CountySt. Charles County

Location

Listing Courtesy of Dielmann Sotheby's International Realty
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Building Information for 1121 South Main Street, Unit 406

Building/Complex1121 S Main StFloor4Stories-Residences-Pet Policy-Pet Policy Details-Year Built2025

Payment Calculator

$4,583 per month

30 year fixed, 6.15% Interest

Principal and Interest

$4,021

Property Taxes

$0

HOA Dues

$562

The Payment Calculator is for illustrative purposes only.

Property Information for 1121 South Main Street, Unit 406

Summary
Location and General Information
  • City: St Charles
  • County Or Parish: St. Charles
  • Latitude: 38.7722442
  • Longitude: -90.48638384
  • Postal Code: 63301
  • State Or Province: MO
  • Sub division Name: Montgomery Sub
  • Unit Number: 406
Taxes and HOA Information
  • List AOR: St. Louis Association of REALTORS
  • Association Fee: $562.00
  • Association Fee Frequency: Monthly
  • Association Fee Includes: Insurance, Maintenance Grounds, Maintenance Parking/Roads, Common Area Maintenance, Exterior Maintenance, Management, Pest Control, Roof, Sewer, Snow Removal, Trash, Water
  • Parcel Number: 6-014A-4361-00-0006.0000000
  • Tax Annual Amount: $.00
  • Tax Year: 2024
Owner
  • Township: St. Charles
Parking
  • Attached Garage: Yes
  • Carport: No
  • Garage Spaces: 1.0
  • Garage: Yes
School Information
  • Elementary School: Lincoln Elem.
  • High School: St. Charles High
  • High School District: St. Charles R-VI
  • Middle Or Junior School: Jefferson / Hardin
Property
Lot Information
  • Living Area: 1544.0
  • Lot Features: Level
  • Lot Size Acres: 0.1607
  • Property Sub Type: Condominium
  • Property Type: Residential
Property and Assessments
  • Above Grade Finished Area: 1544.0
  • Above Grade Finished Area Source: Builder
  • Documents Available: Building Plans
  • Documents Count: 0
  • Photos Count: 12
  • Year Built: 2025
  • Disclosures: HOA/Condo Disclosure Available
  • Construction Materials: Board & Batten Siding, Brick
Utilities
  • Electric: Ameren
  • Sewer: Public Sewer
  • Utilities: Cable Available
  • Water Source: Public
Interior and Exterior Features
Exterior Features
  • Association Amenities: Association Management, Common Ground, Elevator(s), Game Room, Meeting Room, Parking, Party Room, Roof Deck, Sauna
Interior Features
  • Appliances: Cooktop, Dishwasher, Disposal, Microwave, Oven, Refrigerator, Washer/Dryer
  • Levels: One
  • Main Level Bedrooms: 2.0
  • Bathrooms Full: 2
  • Bathrooms Half: 0
  • Bathrooms Total Integer: 2
  • Bedrooms Total: 2
  • Cooling: Central Air
  • Fireplace Features: Living Room
  • Fireplaces Total: 1
  • Fireplace: Yes
  • Heating: Forced Air
  • Interior Features: Ceiling Fan(s), Crown Molding, Custom Cabinetry, Eat-in Kitchen, High Ceilings, Kitchen Island, Open Floorplan, Recessed Lighting

Property History for 1121 South Main Street, Unit 406

DateEvent & SourcePriceAppreciation
Jul 26, 2025

Listed (Active)

MARIS #25051588

$825,000—
DateEvent & SourcePrice
07/26/2025

Listed (Active)

MARIS #25051588

$825,000

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

Schools near 1121 South Main Street, Unit 406

This home is within St. Charles R-VI School District.
Rating
School
Type
Grades
Distance
Lincoln Elementary School
Public - K to 4
Jefferson Intermediate School
Public - 5 to 6
Hardin Middle School
Public - 7 to 8
St. Charles High School
Public - 9 to 12
Rating
School
Distance
Lincoln Elementary School
PublicK to 4

Jefferson Intermediate School
Public5 to 6

Hardin Middle School
Public7 to 8

St. Charles High School
Public9 to 12

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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More information about 1121 South Main Street, Unit 406, St. Charles, MO 63301

1121 South Main Street, Unit 406 is a condo for sale in St. Charles, MO 63301. This property was listed for sale on July 26, 2025 by Dielmann Sotheby's International Realty, it's currently listed at $825,000. This listing's school district is St. Charles R-VI School District. Nearby schools include Lincoln Elementary School, Jefferson Intermediate School and Hardin Middle School. 1121 South Main Street, Unit 406 is a 2-bed, 2-bath, 1,544 sqft condo built in 2025.

No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of descriptions or measurements (including square footage measurements and property condition), such should be independently verified, and Compass, Inc., its subsidiaries, affiliates and their agents and associated third parties expressly disclaims any liability in connection therewith. Photos may be virtually staged or digitally enhanced and may not reflect actual property conditions. Offers of compensation are subject to change at the discretion of the seller. No financial or legal advice provided. Equal Housing Opportunity.

Listing Courtesy of Dielmann Sotheby's International Realty

Properties displayed may be listed or sold by various participants in the MLS. Based on information submitted to the MLS GRID as of 01/27/2026 11:07 AM. All data is obtained from various sources and may not have been verified by broker orMLS GRID. Supplied Open House Information is subject to change without notice. All informationshould be independently reviewed and verified for accuracy. Properties may or may not be listed bythe office/agent presenting the information.