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    Downtown Office with Extensive Amenities Title is generated by Realmo AI

    401 Douglas St, Sioux City, IA 51101

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    Updated office space with access to many amenities and services.

    Type:Office
    Property size:
    12,000 SF
    Added:
    Apr 20, 2026
    Days on Market:
    48
    Last Refresh:
    Apr 20 at 9:04 pm

    Property Features for 401 Douglas St

    General Information

    Standard status
    Active
    Size
    12,000 SF
    Property subtype
    Office

    Building Details

    Year Built
    1979

    Spaces For Lease

    at 401 Douglas St Contact us

    We can help!

    Listing Contact
    Chris Bogenrief, SIOR, CCIM, MBA

    Listing agent Chris Bogenrief, SIOR, CCIM, MBA

    Listing office

    Listing date Apr 20, 2026

    Source Naiglobal

    Displayed information is deemed reliable but is not guaranteed and should be independently verified.

    All listing content including descriptions, pricing, images are the copyrighted material of Chris Bogenrief, SIOR, CCIM, MBA

    HighLights

    • Full‑service lease includes taxes, building insurance, CAM, nightly janitorial & utilities.
    • Enjoy free access to over 12,000 SF of amenities, including a wellness center, basketball court, and fitness floor.
    • Redundant 1500 kw generator and uninterruptible power supply (UPS).
    • Access to eight meeting rooms, including a 64‑person assembly hall and a 20‑person executive dining room with a full kitchen and rooftop patio.
    • Interior access to adjacent public parking ramp and shared parking with Hard Rock Casino.
    • On‑site property management and reception services.

    Overview

    This recently updated office space is located in a high-quality, full-service building in downtown Sioux City. The property offers access to over 12,000 square feet of amenities. It features views of the Missouri River and an expansive interior atrium. A redundant 1500 kw generator and uninterruptible power supply (UPS) are available. The building provides a wellness center with showers and locker rooms, as well as a small basketball court and fitness floor on the 6th floor. Additional amenities include a full-service mail and document center, high-level card access security, and a Roberts Floor Cell System. Reception services and on-site property management are provided. Interior access to an adjacent public parking ramp and shared parking with the Hard Rock Casino are available. There are eight meeting rooms, including a 64-person assembly hall, a 64-person press room, three 6-person conference rooms expandable to 30 on the main floor, a 12-person and a 20-person conference room on the 4th floor, and a 20-person executive dining room with a full kitchen and direct access to a large rooftop patio on the 5th floor. The full-service lease includes taxes, building insurance, CAM, nightly janitorial services, and utilities. Heated sidewalks are also included.
    Location Intelligence

    Current Use by Public Records

    Bankers Life Financial Advisor Horneber, Alice S Law Firm Horneber Law Firm Law Firm Iowa Poison Control ... Charitable Organization Siouxland CARES Charitable Organization

    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
    Sioux City
    County
    Woodbury
    State
    Iowa
    Longitude
    -96.407117
    Latitude
    42.494513

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    FAQs

    What type of property is this?
    Office building - Updated office space with access to many amenities and services.
    Where is this office building located?
    The property is located at 401 Douglas St Sioux City, IA.
    What are key features of this property?
    This property features: Full‑service lease includes taxes, building insurance, CAM, nightly janitorial & utilities.; Enjoy free access to over 12,000 SF of amenities, including a wellness center, basketball court, and fitness floor.; Redundant 1500 kw generator and uninterruptible power supply (UPS).
    (712) 204-6261
    We can help!
    Listing Contact
    Chris Bogenrief, SIOR, CCIM, MBA
    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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