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Updated Triplex in Sioux City

518 S Helen St., Sioux City, IA 51106

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For Sale

$207,000

MULTI_FAMILY - Sioux City, IA

Property size:

1,584 SF

Lot size:

0.20 Acres

Price / SF:

$130/SF

HighLights

Well‑maintained triplex at 518 S Helen with three separate units: 2‑bed upper, 1‑bed main‑level, and rear studio
Updates noted across the units, including modern flooring and general improvements
Heating: forced air
Owner pays water, sewer, and trash for all units, plus electric for unit 3

We can help!

Listing Contact

Stephanie Dattolico

For Sale

$207,000

MULTI_FAMILY - Sioux City, IA

Property size:

1,584 SF

Lot size:

0.20 Acres

Price / SF:

$130/SF

Added:: Apr 29, 2026
Days on Market:: 47
Last Refresh:: Jun 14 at 9:06 am

Property Features for 518 S Helen St.

General Information

Property type: Residential Multi Family
Property subtype: Other
Zoning: nc-4
Bedrooms: 3
Bathrooms: 3
Rooms: Bedroom 2, Bathroom 2, Bedroom 3, Bathroom 3, Bedroom 1, Bathroom 1
Standard status: Active
APN: 894735152008
Size: 1,584 SF
Lot size: 0.20 Acres

Taxes and HOA fees

Tax Year: 2024
Tax Description: TABLE LOT 4 BLK 6
Tax Annual Amount: 2773

Utilities

Heating system: Forced Air

Building Details

Year built: 1920
Number of units: 3

We can help!

Listing Contact

Stephanie Dattolico

Listing agent Stephanie Dattolico

Listing office Gateway Real Estate Advisors 700 Nebraska St, Dakota Dunes, IA

Listing date Apr 29, 2026

MLS# 832750 Listing URL

Copyright © 2026 Northwest Iowa Regional Board of Realtors. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

HighLights

Well‑maintained triplex at 518 S Helen with three separate units: 2‑bed upper, 1‑bed main‑level, and rear studio
Updates noted across the units, including modern flooring and general improvements
Heating: forced air
Owner pays water, sewer, and trash for all units, plus electric for unit 3

Overview

Located on Sioux City's east side, this well-maintained triplex at 518 S Helen St. offers a solid investment opportunity. The property features three individual units: a 2-bed upper unit, a 1-bed main-level unit, and a studio in the rear. Each unit has been updated with modern flooring and general improvements. The property size is 1584 square feet and the lot size is 0.2 acres. The zoning is nc-4. Owner pays water, sewer, and trash for all units, as well as electric for unit 3. This triplex provides a clean, updated, and income-ready option in a convenient location, suitable for expanding an established portfolio or stepping into multifamily ownership.

Local Financial Insights For Multifamily LT 5

Simulate Cap Rate and NOI

NOI Build-Up

Component	$	$/SF
Gross rent	$18.1k	$11.40
− Vacancy	−$858	−$0.54
EGI	$17.2k	$10.86
− OpEx	−$5.2k	−$3.26
NOI	$12.0k	$7.60

1,584 SF · lease $11.40/SF/yr · vacancy 4.75% · expense 30.00%

Alternative Uses

Best Use

Multifamily LT 5

$172.0K

$150.5K – $200.7K (±1% cap)

NOI $12,040 @ 7.0% cap · market cap 5.82%

Second Best

Apartment 5plus

$158.9K

$139.0K – $185.4K (±1% cap)

NOI $11,123 @ 7.0% cap · market cap 5.37%

Theoretical Best

Specialty Retail

$238.0K

$208.3K – $277.7K (±1% cap)

NOI $16,662 @ 7.0% cap · market cap 8.05%

Zoning and permitted uses should be independently verified with local authorities.

Property Profile Location Intelligence

Current Use by Public Records

Triplexes

Suggested Use

Location Insight

Map
Local Demand

City: Sioux City
County: Woodbury
State: Iowa
Longitude: -96.369174
Latitude: 42.486021

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View Details

For sale
Triplexes
IA
Sioux City
51106
518 S Helen St.

What type of property is this?

Triplex - Well-maintained triplex with updated units, ideal for investment.

Where is this triplex located?

The property is located at 518 S Helen St. Sioux City, IA.

What is the asking price?

The asking price for this property is $207,000.

What are key features of this property?

This property features: Well‑maintained triplex at 518 S Helen with three separate units: 2‑bed upper, 1‑bed main‑level, and rear studio; Updates noted across the units, including modern flooring and general improvements; Heating: forced air

518 S Helen St., Sioux City, IA 51106

MULTI_FAMILY - Sioux City, IA

Property Features for 518 S Helen St.

General Information

Taxes and HOA fees

Utilities

Building Details

We can help!

HighLights

Overview

Local Financial Insights For Multifamily LT 5

Simulate Cap Rate and NOI

Alternative Uses

Current Use by Public Records

Suggested Use

Location Insight

Nearby Similar for Sale

Office Building with Courtyard

Freestanding Single-Story Office Building

Multifamily Apartment Building with Mixed Units

Retail and Office Building with Skywalk

Corner Multi-Use Retail and Office

Two-Unit Leased Entertainment Property

Three-Story Office Building with Parking

Commercial Property in Sioux City, IA

Extended-Stay Hotel Opposite Airport

Corner Lot Brick Office Building

Four-Plex With Off-Street Parking

Fully Rented Triplex

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