521 Fassen St

4
Baths
3,700 Sq. Ft.
$39 / Sq. Ft.
3,700
Sq. Ft.
$39
per Sq. Ft.

Description

What an opportunity! Use as an investment property or Occupy 1 unit and get rent from the other! Large (almost 4000 sq. ft.) duplex featuring 2 townhome style units. Each unit features living room, dining room, kitchen and full bath with private laundry hookups on the main level AND three bedrooms and full bath on upper level. Each unit has it's own basement. This property may qualify for Seller Financing (Vendee). Property was built prior to 1978, Lead Based Paint Potentially ExistsWhat an opportunity! Use as an investment property or Occupy 1 unit and get rent from the other! Large (almost 4000 sq. ft.) duplex featuring 2 townhome style units. Each unit features living room, dining room, kitchen and full bath with private laundry hookups on the main level AND three bedrooms and full bath on upper level. Each unit has it's own basement. This property may qualify for Seller Financing (Vendee). Property was built prior to 1978, Lead Based Paint Potentially Exists
  1. Listed by Maria Strizhevskaya • Coldwell Banker Realty - Gundaker West Regional

Property Details for 521 Fassen Street

Architectural Style
Traditional
Waterfront
No
LISTING UPDATED: 02/10/2026 04:11 PM

Property Details for 521 Fassen Street

StatusActive Under Contract
MLS #25080527
Days on Market20
Taxes-
HOA Fees-
Condo/Co-op Fees-
Compass TypeMulti Family
MLS TypeResidential Income / 2-4 Units
Year Built1913
Lot Size0.10 AC / 4,386 SF
CountySt. Louis Independent City

Location

Listing Courtesy of Coldwell Banker Realty - Gundaker West Regional
Add your commute

Building Information for 521 Fassen Street

Stories-Residences2Year Built1913Building Size-Lot Size0.10 AC / 4,386 SF

Payment Calculator

$832 per month

30 year fixed, 6.15% Interest

Principal and Interest

$707

Property Taxes

$125

HOA Dues

$0

The Payment Calculator is for illustrative purposes only.

Property Information for 521 Fassen Street

Summary
Location and General Information
  • City: St Louis
  • County Or Parish: St Louis City
  • Directions: GPS Friendly
  • Latitude: 38.566047
  • Longitude: -90.246545
  • Neighborhood: Carondelet
  • Postal Code: 63111
  • State Or Province: MO
  • Sub division Name: Carondelet Commons Fields Add
  • Postal Code Plus 4: 1834
Taxes and HOA Information
  • List AOR: St. Louis Association of REALTORS
  • Parcel Number: 2840-06-0300-0
Owner
  • Township: St. Louis City
Parking
  • Attached Garage: No
  • Carport: No
  • Garage: No
School Information
  • Elementary School: Woodward Elem.
  • High School: Roosevelt High
  • High School District: St. Louis City
  • Middle Or Junior School: Lyon-Blow Middle
Property
Lot Information
  • Living Area: 3700.0
  • Lot Features: Level
  • Lot Size Acres: 0.1007
  • Lot Size Source: Public Records
  • Lot Size Square Feet: 4386.49
  • Property Condition: Updated/Remodeled
  • Property Sub Type: 2-4 Units
  • Property Type: Residential Income
Property and Assessments
  • Above Grade Finished Area: 3700.0
  • Above Grade Finished Area Source: Public Records
  • Below Grade Finished Area: 1200.0
  • Below Grade Finished Area Source: Estimated
  • Documents Count: 0
  • Photos Count: 13
  • Year Built: 1913
  • Disclosures: Code Compliance Required
  • Construction Materials: Brick
  • Ownership Type: Government
Interior and Exterior Features
Exterior Features
  • Fencing: None
Interior Features
  • Appliances: None
  • Basement: Full, Unfinished
  • Basement YN: Yes
  • Levels: Two
  • Bathrooms Full: 0
  • Bathrooms Half: 0
  • Bedrooms Total: 0
  • Cooling: Central Air
  • Fireplace: No
  • Heating: Forced Air
  • Interior Features: Eat-in Kitchen
  • Laundry Features: Main Level
Multi Family
Multi-Family Information
  • Number Of Units Total: 2
Unit 1
  • UnitType Beds Total: 3.0
Unit 2
  • UnitType Beds Total: 3.0

Property History for 521 Fassen Street

DateEvent & SourcePriceAppreciation
Feb 6, 2026

Active Under Contract

MARIS #25080527

—
Dec 16, 2025

Pending

MARIS #25080527

—
Dec 10, 2025

Listed (Active)

MARIS #25080527

$145,000—
Dec 9, 2025

Hold

MARIS #25073426

$145,000—
Dec 9, 2025

Listed (Active)

MARIS #25073426

$145,000—
Oct 3, 2025

Withdrawn

MARIS #25048051

$125,000—
Aug 4, 2025

Active Under Contract

MARIS #25048051

—
Aug 4, 2025

Listed (Active)

MARIS #25048051

$125,000—
Nov 22, 2024

Closed

MARIS #24066402

$159,900—
Oct 26, 2024

Pending

MARIS #24066402

—
Oct 21, 2024

Listed (Active)

MARIS #24066402

$179,900—
DateEvent & SourcePrice
02/06/2026

Active Under Contract

MARIS #25080527

—
12/16/2025

Pending

MARIS #25080527

—
12/10/2025

Listed (Active)

MARIS #25080527

$145,000
12/09/2025

Hold

MARIS #25073426

$145,000
12/09/2025

Listed (Active)

MARIS #25073426

$145,000
10/03/2025

Withdrawn

MARIS #25048051

$125,000
08/04/2025

Active Under Contract

MARIS #25048051

—
08/04/2025

Listed (Active)

MARIS #25048051

$125,000
11/22/2024

Closed

MARIS #24066402

$159,900
10/26/2024

Pending

MARIS #24066402

—
10/21/2024

Listed (Active)

MARIS #24066402

$179,900

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

Public Records for 521 Fassen Street

Taxable ValueLand$1,460Additions$16,530Total$17,990
Tax Record2020$1,501 ($125 / month)
Home Facts
Baths3Total Finished SqFt3,700 SqFtAbove Grade Finished SqFt3,700 SqFtStories2Lot Size4,613 SqFtStyleDuplexYear Built1913Year Renovated1916ZoningBCountySAINT LOUIS CITYAPN28400603000

Schools near 521 Fassen Street

This home is within St. Louis City School District.
Rating
School
Type
Grades
Distance
Public - PK to 5
Public - PK to 8
Public - 9 to 12
Public - 11 to 12
Rating
School
Distance
Woodward Elementary School
PublicPK to 5

Lyon At Blow Elementary School
PublicPK to 8

Roosevelt High School
Public9 to 12

Carnahan School Of The Future
Public11 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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Listing Courtesy of Coldwell Banker Realty - Gundaker West Regional

Based on information submitted to the MLS GRID as of 02/10/2026 04:11 PM. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Properties displayed may be listed or sold by various participants in the MLS. IDX information is provided exclusively for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data is deemed reliable but is not guaranteed by MLS GRID. Use of the MLS GRID data may be subject to an end user license agreement prescribed by the applicable MLS of the Member Participant, if any, and as amended from time to time.