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    The Largest CRE Database in the US with Over 1 Million Listings

    109 Carlen St S Mobile, AL 36606

    Sponsored
    For Sale
    $270,000

    Duplex - Mobile, AL

    Type:Duplex
    Lot size:
    0.20 Acres
    Days on Market:
    24
    Last Refresh:
    Jan 25 at 6:06 pm

    Property Features for 109 Carlen St S

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Duplex
    Standard status
    Active
    APN
    2907240005124
    Parking
    4
    Parking features
    Driveway, Parking Lot
    Lot size
    0.20 Acres

    Building Details

    Floors in Building
    2
    Number of units
    3
    Architectural style
    Other

    We can help!

    Listing Contact
    Michael Subirats
    Michael Subirats

    Roberts Brothers, Inc. (251) 344-9220

    Listing agent Michael Subirats (251) 344-9220

    Listing date Jan 2, 2026

    MLS# 7572483 Listing URL

    Copyright © 2026 Gulf Coast MLS. 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

    Mobile Triplex Investment Opportunity

    This three-unit property is an investment opportunity. The property consists of a duplex main house with two units, each featuring one bedroom and one bathroom, and a detached garage apartment building, also with one bedroom and one bathroom. Gross rents total $2,700 per month, or $32,400 annually. Unit A is currently leased for $900 per month, with the lease expiring on March 30, 2026. It features hardwood and LVP flooring, central HVAC (exterior unit installed in 2018), a window unit, a refrigerator, and a gas range. Unit B is currently vacant but was previously leased at $900 per month. It includes hardwood and LVP flooring, window AC units, a central gas furnace for heat, a refrigerator, and a gas range. Unit C, the garage apartment, is currently leased for $900 per month, with the lease expiring in September 2026. It features central HVAC and carpet, and is less updated than the duplex units. Recent updates have been made to Units A and B, including water heaters, window units, and kitchen appliances. The roofs are 10-15 years old, and the central HVAC systems are 7-10 years old. The property is being sold 'as-is' with all occupants in place. The lot size is 0.1953 acres.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Triplexes

    Suggested Use

    Realty agency Law Firm Restaurant Spa & Massage Dental Office Hair Salon Nail Salon Clothing Store Building Supply Gym & Fitness

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

    Location Insight

    • Map
    • Local Demand
    City
    Mobile
    County
    Mobile
    State
    Alabama
    Longitude
    -88.08437
    Latitude
    30.682124

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    FAQs

    What type of property is this?
    Multifamily property - Three-unit property in Mobile, Alabama with income potential.
    Where is this multifamily property located?
    The property is located at 109 Carlen St S Mobile, AL.
    What is the asking price?
    The asking price for this property is $270,000.
    What are key features of this property?
    This property features: - Income-generating 3-unit property boasting $32,400 gross annual rents.; - Two units currently leased at $900/month each.; - **Duplex units (A & B) feature recent updates including water heaters and kitchen appliances.**
    (251) 490-1449
    Request Owner's contact information
    109 Carlen St S Mobile, AL 36606
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    Mobile, AL 36606
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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
    109 Carlen St S Mobile, AL 36606
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    We can help!
    Listing Contact
    Michael Subirats
    Michael Subirats
    Real Estate License ID: 93717-1
    (251) 490-1449
    Learn more
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