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    11 E Sullivan Avenue Flagstaff, AZ 86001

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    Claim this Listing
    For Sale
    $1,500,000

    MULTI_FAMILY - Flagstaff, AZ

    Property size:
    3,366 SF
    Price / SF:
    $445/SF
    Added:
    Apr 17, 2025
    Days on Market:
    377
    Last Refresh:
    Apr 28 at 5:06 pm

    Property Features for 11 E Sullivan Avenue

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Other
    Pets allowed
    Dogs OK, Cats OK
    Appliances
    Dishwashers, Refrigerators
    Standard status
    Active
    APN
    10105001g
    Size
    3,366 SF

    Taxes and HOA fees

    Tax Year
    2025
    Tax Description
    SUBDIVISION: NORTHEAST ADD BLOCK: 83 BEG SW COR INST 3808517; TH S69-56-41E 142.32'; TH N19-51-44E 20'; TH N69-56-41W 8
    Tax Annual Amount
    5473

    Utilities

    Utilities
    Cable Available
    Heating system
    Natural Gas, Central
    Cooling system
    Central Air, Multi Units

    Building Details

    Year built
    2021
    Number of units
    2
    Roof type
    Asphalt, Metal

    We can help!

    Listing Contact
    Jacqueline A Kellogg
    Jacqueline A Kellogg

    Listing agent Jacqueline A Kellogg License #BR040423000

    Listing office West USA Realty Flagstaff 2230 E Cedar Ave, Flagstaff, AZ

    Listing date Apr 17, 2025

    MLS# 200318 Listing URL

    Copyright © 2026 Northern Arizona Multiple Listing Service. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

    Overview

    Downtown Flagstaff Modern Duplex

    This duplex in downtown Flagstaff offers modern design and flexibility. Each side features 3 bedrooms, 2.5 bathrooms, and a 2-car garage, with approximately 1,650 sq ft per unit of living space. The property provides open-concept layouts, high ceilings, natural light, quartz countertops, stainless appliances, and contemporary finishes. The property delivers two full residences on one lot. The property is suitable for long-term rental, short-term rental, or hybrid living. The property is located minutes away from restaurants, shops, trails, NAU, and nightlife. The total property size is 3366 square feet.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Duplexes

    Suggested Use

    Restaurant Real Estate Agency Law Firm Building Supply Spa & Massage Center Dental Office Big Box & Wholesale Store Auto Repair Shop Hair Salon Nail Salon

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

    Location Insight

    • Map
    • Local Demand
    City
    Flagstaff
    County
    Coconino
    State
    Arizona
    Longitude
    -111.645108
    Latitude
    35.204576

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    FAQs

    What type of property is this?
    Duplex - Rare newer construction duplex in downtown Flagstaff with modern design.
    Where is this duplex located?
    The property is located at 11 E Sullivan Avenue Flagstaff, AZ.
    What is the asking price?
    The asking price for this property is $1,500,000.
    What are key features of this property?
    This property features: Fee simple ownership of a newly constructed duplex in downtown Flagstaff, offering control and flexibility.; Potential for two income streams as a true investment property, with each unit estimated to generate ~$3,250/month.; **Modern design and finishes comparable to luxury condos, including quartz countertops and stainless steel appliances.**
    (928) 699-3445
    We can help!
    Listing Contact
    Jacqueline A Kellogg
    Jacqueline A Kellogg
    Real Estate License ID: BR040423000
    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.

    More about this property
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