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    Sister Bay Commercial Flex Space Title is generated by Realmo AI

    1815 County Rd ZZ, Sister Bay, WI 54234

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    Claim this Listing
    For Sale
    Under Contract
    $585,000

    COMMERCIAL - Sister Bay, WI

    Property size:
    5,600 SF
    Lot size:
    2.00 Acres
    Price / SF:
    $104/SF
    Added:
    Apr 28, 2026
    Days on Market:
    25
    Last Refresh:
    May 21 at 11:06 pm

    Property Features for 1815 County Rd ZZ

    General Information

    Property type
    Commercial Sale
    Property subtype
    Other
    Zoning
    Light Industrial (LI)
    Standard status
    Active Under Contract
    Size
    5,600 SF
    Lot size
    2.00 Acres

    Taxes and HOA fees

    Tax Annual Amount
    2104

    Building Details

    Year built
    1990

    We can help!

    Listing Contact
    Daniel Mortier
    Daniel Mortier

    Listing agent Daniel Mortier

    Listing office True North Real Estate LLC PO Box 370, Fish Creek, WI

    Listing date Apr 28, 2026

    MLS# 147146

    Copyright © 2026 Door County MLS. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

    HighLights

    • 5600 sq.ft. heated and insulated storage/workshop space.
    • Light Industrial zoning allows for commercial use/rental potential.
    • Conveniently located less than two miles from downtown Sister Bay.
    • Includes two office/studio spaces and bath and a half.
    • Features three overhead garage doors and ample parking (blacktop and gravel).
    • Potential for expansion/addition with zoning approval.

    Overview

    This 5600 sq.ft. commercial property offers well-maintained, heated storage and workshop space. Located less than two miles from downtown Sister Bay, Wisconsin, the property is zoned Light Industrial (LI), providing flexibility for various uses. A residence is considered an accessory use. The fully heated and insulated building includes a bath and a half, two office or studio spaces, and three overhead garage doors (two eight-foot and one seven-foot). It features a private well, a 2500-gallon concrete holding tank, a blacktop drive and parking area, with additional gravel parking. The property is well-kept inside and out. The zoning allows for potential additions to create more storage or rental space, subject to zoning approval. The sectioned building layout is suitable for rental options. The property is situated on a 2-acre lot.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Flex space

    Suggested Use

    Real Estate Agency Law Firm Restaurant Spa & Massage Center Auto Repair Shop Gym & Fitness Center Skin Care Clinic Kitchen & Bath Showroom Department Store Bar & Pub

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

    Location Insight

    • Map
    • Local Demand
    City
    Sister Bay
    County
    Door
    State
    Wisconsin
    Longitude
    -87.0859866
    Latitude
    45.1853458

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    • $48,000
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      Sister Bay Commercial Flex Space

      Heated, insulated flex space suitable for workshop, studio, or office.
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      Door County Storefronts and Duplex

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      Sister Bay Flex Space

      Flex space ideal for storage, workshop, studio, or office.
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    FAQs

    What type of property is this?
    Flex space - 5600 sqft commercial space near Sister Bay, Wisconsin.
    Where is this flex space located?
    The property is located at 1815 County Rd ZZ Sister Bay, WI.
    What is the asking price?
    The asking price for this property is $585,000.
    What are key features of this property?
    This property features: 5600 sq.ft. heated and insulated storage/workshop space.; Light Industrial zoning allows for commercial use/rental potential.; Conveniently located less than two miles from downtown Sister Bay.
    (920) 421-0098
    We can help!
    Listing Contact
    Daniel Mortier
    Daniel Mortier
    Learn More
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    Realmo Value Estimations

    Realmo estimates a property’s market value using a proprietary methodology that incorporates public data and user-submitted information. This cumulative value is generated by integrating a variety of conventional and innovative methods. 

    Disclaimer

    These figures are not official appraisals and should not be used as a substitute for a valuation performed by a licensed appraiser.
    Actual market value may differ due to factors not captured in the data. Estimates are offered for informational purposes only, and users should conduct independent research before making financial or investment decisions.
    By using this feature, you acknowledge that Realmo is not responsible for actions taken based on these estimates.

    AI approach

    Realmo AI Method estimates property value using machine learning models trained on millions of comparable listings, transactions, and market signals. It analyzes property features, location intelligence data, and current market dynamics to predict the most probable market value in real time.

    Realmo CapRate Calculation

    Realmo calculates the Capitalization Rate (Cap Rate) to help estimate a property's potential return on investment. The Cap Rate is a fundamental metric in commercial real estate that measures the relationship between a property's net operating income and its market value.

    How We Calculate Cap Rate

    Cap Rate Formula:
    Cap Rate (%) = (Net Operating Income / Property Value) × 100

    Net Operating Income (NOI) Formula:
    NOI = Area × Lease Rate × (1 - Vacancy Rate) × (1 - Operating Expense Ratio)

    Components

    Net Operating Income (NOI) represents the annual income a property generates after operating expenses:

    • Area: Building square footage from property records
    • Lease Rate: Annual $/sqft based on market data for the property type and geographic location
    • Vacancy Rate: Percentage of unoccupied space based on market data for the property type and location
    • Operating Expense Ratio: Operating costs as a percentage of income, varies by property type

    Property Value is derived from:

    • Recent sale price (if available)
    • Statistical models using comparable sales
    • AI-powered valuation estimates

    Example Calculation

    For a 100,000 sqft Office Building:

    • Lease Rate: $25.00/sqft/year (market data for Office in this area)
    • Vacancy Rate: 8% (market data for Office in this area)
    • Operating Expense Ratio: 35% (typical for Office properties)
    • Property Value: $15,000,000

    Step 1: Calculate NOI

    NOI = 100,000 × $25.00 × (1 - 0.08) × (1 - 0.35)
    NOI = 100,000 × $25.00 × 0.92 × 0.65
    NOI = $1,495,000/year

    Step 2: Calculate Cap Rate

    Cap Rate = ($1,495,000 / $15,000,000) × 100
    Cap Rate = 9.97%

    Property Type Considerations

    Net Operating Income calculations vary by property type due to different operating expense ratios:

    • Office: Higher expenses (30-40%) for HVAC, utilities, maintenance
    • Retail: Moderate expenses (25-35%) for common area maintenance
    • Industrial/Warehouse: Lower expenses (15-25%) for minimal tenant services
    • Multifamily: Moderate expenses (35-45%) including property management
    • Self-Storage: Lower expenses (25-35%) due to minimal maintenance

    Market lease rates and vacancy rates are specific to each property type and geographic location, reflecting local market conditions.

    Disclaimer

    These calculations are estimates for informational purposes only and should not be used as a substitute for professional financial analysis or appraisal.

    • Cap Rate calculations depend on market data that may change over time
    • Actual operating expenses, lease rates, and vacancy rates may differ from market averages
    • Individual property conditions, lease terms, and tenant quality significantly impact actual NOI
    • Property value estimates are approximations and not official appraisals
    • Cap rates vary widely by market, property condition, and investment risk profile

    Professional Guidance Recommended: Before making any investment or financial decisions, consult with licensed appraisers, commercial real estate brokers, and financial advisors who can evaluate your specific property and circumstances.
    By using this feature, you acknowledge that Realmo is not responsible for investment decisions or actions taken based on these estimates.

    Cap approach

    Capitalization Method calculates value based on estimated net operating income (NOI) and applying a market-based capitalization rate (cap rate), we estimate what a typical investor might be willing to pay for it.

    Comparable approach

    Comparable estimate is based on recent sales of similar nearby properties, adjusted for factors like size, condition, and location.

    Relative

    Relative property class coefficient uses factors that account for typical price differences between various asset types (e.g., retail vs. industrial) to provide a more accurate market-aligned estimate.

    Geo

    Comparable Sales Method, enhanced by Geo coefficients — location-based adjustment factors that reflect differences in price levels across neighborhoods, cities, or regions ensuring a more accurate, market-sensitive valuation.

    Stat Estimate

    This method estimates value based on actual market adjusted recent (~5 years) sales of comparable properties around by location and property type.

    • Ranges - area data calculated by industry standard IQR Outlier Removal Method
    • Range-from: 75% of all similar sales ($/sqft) are above this value
    • Range-to: 75% of all similar sales ($/sqft) are below this value
    AI Estimate

    This method estimates value based on AI market estimation of comparable properties around by location and property type.

    • Ranges - area data calculated by industry standard IQR Outlier Removal Method
    • Range-from: 75% of all estimations ($/sqft) are above this value
    • Range-to: 75% of all estimations ($/sqft) are below this value
    Alternative use

    Estimate considers the property’s potential value if used for a different purpose-based on zoning, demand, and market feasibility.

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