Search
New 4-Unit Flex Building
For Sale
$160,000

3156 18th Street, Spirit Lake, IA 51360

COMMERCIAL, Spirit Lake, IA

Property Size5,600 SF
Price / SF$114.29
Days on Market410

Property Features for 3156 18th Street

General Information

Property type Commercial Sale
Property subtype Other
Property condition Under Construction
Parking features Secured, Open, Garage
Directions GPS
Subdivision Dickinson
Standard status Active
APN 0706251004

Taxes and HOA fees

Tax Year 2023
Tax Description spirit lake Bridgewater park lot 3
Tax Annual Amount 642
Legal Description spirit lake Bridgewater park lot 3

Utilities

Sewer type Public Sewer
Water source Public

Building Details

Year built 2025
Building materials Steel Siding
Roof type Metal
Listing Agency: EXIT Realty Midwest
Listed By: Jeff Ronsiek · License #B59884
Added: Jul 22, 2025 Changed: Sep 4 Last Checked: Sep 4 at 5:06PM
MLS# 250941

Copyright © 2026 Iowa Great Lakes 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.

Investment Insights

Based on property information with market context.

This under-construction flex property comprises a 112' x 50' steel-sided building divided into four individual units, each measuring 28' x 50'. The units are designed for adaptable storage, shop, and recreational applications, with concrete floors, 16' side walls, and 14' x 14' overhead doors. Each space also includes a walk-through entry door, insulation, electrical service, and steel-lined interior and exterior finishes.

Plumbing rough-ins are provided for future bathrooms and floor drains, while an in-floor heat rough-in supports future interior completion. Interior customization is available, allowing owners to configure the units for their intended use. Public water and public sewer serve the property, which is located at 3156 18th Street in Spirit Lake, Iowa.

Key Highlights

  • Four individual flex units within a 112' x 50' building
  • Each unit measures 28' x 50' with 16' side walls
  • 14' x 14' overhead door and walk‑through entry door per unit

Financial Insights

Estimated NOI and Cap Rate

NOI = area × lease_rate × (100 − vacancy) / 100 × (1 − expense_ratio). Net Operating Income — what the owner takes home each year before mortgage payments and income tax. Effective rent (asking rent minus vacancy losses) minus operating costs (taxes, insurance, maintenance, management).
NOI / Yr
$11,882
Cap rate = NOI / list price × 100. Capitalization rate — annual return on a fully cash purchase, before financing. NOI divided by price. Higher means more income per dollar invested, but usually also more risk or older condition. 5–8% is typical for stabilized commercial property; double digits often signal distressed deals.
Cap Rate
7.43%
Suggested Prices Based on Cap Rates Cap rates vary significantly by property type, market, and asset quality. Typical U.S. stable-market ranges: Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+) Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand) Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically) Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher) Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk) Self-Storage — 5.5% to 7.5% Medical Office — 6.0% to 7.5% Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term Rules of thumb: Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%). Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C. Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI. Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$237,640 $237.6K
Cap Rate 7%
$169,743 $169.7K
Cap Rate 9%
$132,022 $132.0K
Market Conditions
NOI Build-Up for 1,400 SF Vacancy — income lost from leasable area expected to sit empty during the year, subtracted from gross rent. EGI (Effective Gross Income) — gross rent minus vacancy losses, the realistic income before paying operating costs. OpEx (Operating Expenses) — recurring costs to operate the property (property tax, insurance, utilities, maintenance, management); excludes financing and capital improvements. NOI (Net Operating Income) — income a property generates after operating costs but before financing and taxes.
Gross rent
$19.7K $14.04/SF
− Vacancy
−$1.4K −$0.98/SF
EGI
$18.3K $13.06/SF
− OpEx
−$6.4K −$4.57/SF
NOI
$11.9K $8.49/SF
Area
Dickinson County, IA
Vacancy
7.00%
Lease Rate
$14.04 /SF/Yr
Expense Ratio
35.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates Cap rates vary significantly by property type, market, and asset quality. Typical U.S. stable-market ranges: Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+) Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand) Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically) Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher) Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk) Self-Storage — 5.5% to 7.5% Medical Office — 6.0% to 7.5% Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term Rules of thumb: Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%). Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C. Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI. Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$237,640
Cap Rate 7%
$169,743
Cap Rate 9%
$132,022

Alternative Uses

Best Use
Flex RnD
$169.7K
$148.5K – $198.0K (±1% cap)
NOI $11,882 @ 7.0% cap · market cap 7.43%
Second Best
Warehouse
$110.0K
$96.3K – $128.4K (±1% cap)
NOI $7,703 @ 7.0% cap · market cap 4.81%
Theoretical Best
Office A
$306.2K
$268.0K – $357.3K (±1% cap)
NOI $21,437 @ 7.0% cap · market cap 13.40%
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

Current Use

Flex space

Suggested Use

Top Pick Parking Lot & Garage HVAC Service Law Firm Garden Center (Bike/Boat/Book/etc) Store Dental Office

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Lease Details

Yes
Utilities to site

Location Intelligence

Trade Area within ½ mile

118
Businesses Nearby
Well-served
Demand for This Use

Demographics for 51360, IA

8,553
Population
6,638
Households
1.3
Avg Household Size
49
Median Age
35%
College-Educated
97%
High-School Grad
105.2 sq mi
ZIP Area
81
Density / Sq Mi
$77,464
Median Household Income
$41,043
Median Earnings
$1,005
Median Rent
$256,000
Median Home Value

Market

Vacancy Rate% for Industrial in Midwest region

4.4% 2019
4.9% 2020
3.6% 2021
3.1% 2022
4.6% 2023
5% 2024
4.9% 2025
Rey
Questions? Ask Rey
Realmo’s AI knows this listing — price, zoning, demand, history. Ask anything.

Frequently Asked Questions

What type of property is this?
Flex space - Under-construction units offer customizable interiors, public utilities, and adaptable space for storage, shop, or recreational uses.
Where is this flex space located?
The property is located at 3156 18th Street Spirit Lake, IA.
What is the asking price?
The asking price for this property is $160,000.
What are key features of this property?
This property features: Four individual flex units within a 112' x 50' building; Each unit measures 28' x 50' with 16' side walls; 14' x 14' overhead door and walk‑through entry door per unit
More about this property
Thanks! Your message was sent.
Error! Your message wasn't sent.
Please enter your name
Please enter email
Please enter the email in the correct format
Please enter phone
Please enter the number in the correct format
Please enter message