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    801 Portage Ave Three Rivers, MI 49093

    View on Map
    Sponsored
    For Sale
    $299,000

    COMMERCIAL - Three Rivers, MI

    Type:Office
    Property size:
    5,430 SF
    Lot size:
    2.83 Acres
    Days on Market:
    1
    Last Refresh:
    Mar 9 at 10:50 pm

    Property Features for 801 Portage Ave

    General Information

    Property type
    Commercial Sale
    Property subtype
    Office
    Standard status
    Active
    Rooms
    Basement, Bathroom 2, Bathroom 1
    Bathrooms
    2
    APN
    75 051 199 092 00
    Parking
    15
    Interior features
    Broadband
    Size
    5,430 SF
    Lot size
    2.83 Acres

    Utilities

    Utilities
    Cable Available
    Heating system
    Hot Water(Heating)
    Cooling system
    Window Unit(s)

    Building Details

    Year built
    1900
    Floors in Building
    1
    Number of units
    1
    Building materials
    Block
    Roof type
    Composition

    We can help!

    Listing Contact
    Garrett Hall
    Garrett Hall

    HG Real Estate (269) 205-3635

    Listing agent Garrett Hall (269) 273-7653

    Listing date Mar 9, 2026

    MLS# 26008782

    Copyright © 2026 Michigan Regional Information Center, LLC. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

    Learn more

    Property Insight Report

    Overview

    Historic Three Rivers Office Building

    This historically significant property, formerly the hub of the R.M. Kellogg Company, was originally purchased in 1896. The farm once encompassed 225 acres and was used for strawberry production and seed processing. The building housed patented seeds in vault-like rooms with fireproof doors, which are still on site. The company produced a catalog with 185,000 subscribers and featured the Kellogg Rock Gardens, remnants of which can still be seen. The property is a total of 5430 square feet and sits on a 2.83-acre lot. The current conforming use allows for use as a professional office, but buyers should investigate for their intended use.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    O'Malley Law Office ... Law Firm

    Suggested Use

    Real Estate Agency Restaurant Law Firm Spa & Massage Center Dental Office Hair Salon Nail Salon Building Supply Auto Repair Shop Gym & Fitness Center

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

    Location Insight

    • Map
    • Local Demand
    City
    Three Rivers
    County
    St. Joseph
    State
    Michigan
    Longitude
    -85.627541
    Latitude
    41.954911

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    FAQs

    What type of property is this?
    Office building - Unique commercial property with historical significance in Three Rivers, MI.
    Where is this office building located?
    The property is located at 801 Portage Ave Three Rivers, MI.
    What is the asking price?
    The asking price for this property is $299,000.
    What are key features of this property?
    This property features: - Historically significant property: former hub of the R.M. Kellogg Company, originally purchased in 1896.; - Unique architectural features: Original fireproof doors from seed vault rooms are still on site.; - Large property with historical significance: Once part of a 225-acre strawberry production and seed processing farm.
    (269) 273-7653
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    801 Portage Ave Three Rivers, MI 49093
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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.

    More about this property
    801 Portage Ave Three Rivers, MI 49093
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    We can help!
    Listing Contact
    Garrett Hall
    Garrett Hall
    Real Estate License ID: 6502432494
    (269) 273-7653 (269) 273-8185 (269) 205-3635
    Learn more
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