Add Listing
    For Lease
    • For Sale
    • For Lease
    • Recently Sold
    • Property Lookup
    • Brokers
    Back to Search
    Renovated Office Space Available Title is generated by Realmo AI

    900 & 990 Stewart Avenue, Garden City, NY 11530

    View on Map
    Claim this Listing
    Loading data...
    Loading data...
    Loading data...
    For Lease
    Contact for pricing

    Recently renovated office spaces with modern amenities available for rent.

    Type:Office
    Property size:
    63,712 SF
    Added:
    Nov 22, 2025
    Days on Market:
    180
    Last Refresh:
    May 20 at 12:21 am

    Property Features for 900 & 990 Stewart Avenue

    General Information

    Standard status
    Active
    Size
    63,712 SF
    Property subtype
    Office

    We can help!

    Listing Contact
    Robert Seidenberg

    Listing agent Robert Seidenberg

    Listing office CBRE | Long Island

    Listing date Nov 22, 2025

    Source Cbre

    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 CBRE | Long Island

    HighLights

    • Multi‑million dollar renovations recently completed.
    • Renovations include main lobby, common hallways, landings and bathrooms.
    • Collaborative work areas.
    • Wi‑Fi available.
    • Wired Score Gold certification.
    • Terrific connectivity.

    Overview

    The property at 900 & 990 Stewart Avenue features recently completed multi-million dollar renovations. These renovations include upgrades to the main lobby, common hallways, landings, and bathrooms. The property offers collaborative work areas and Wi-Fi. It also features Wired Score Gold connectivity. The property contains 63,712 square feet of office space.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    The Northwest Group, LLC (Bike/Boat/Book/etc) Store Risk Strategies Co Financial Advisor QuikFund Inc Loan Service Flagstar Bank Home ... Loan Service Bottomline Technologies Bank

    Suggested Use

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

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

    Location Insight

    • Map
    • Local Demand
    City
    Garden City
    County
    Nassau
    State
    New York
    Longitude
    -73.613
    Latitude
    40.7314

    Nearby Similar for Lease

    • $25 SF/Yr
      5,500 SF

      Garden City Warehouse Opportunity

      Warehouse space near Roosevelt Field Mall and Exit 38.
      603 Chestnut Street, Garden City, NY 11530
      View Details
    • $1,950/Mo

      Luxury Office Suites in Garden City

      Premier office building with flexible terms and full-service amenities.
      1051 Franklin Ave, Garden City, NY 11530
      View Details
    • $19 SF/Yr
      168,752 SF

      Professional Office Space in Garden City

      Well-appointed office suites in a prime Garden City location.
      377 Oak Street, Garden City, NY 11530
      View Details
    • $32 SF/Yr
      1,128 SF

      Garden City Office Space Available

      Two six-story buildings with modern amenities and convenient location.
      990 Stewart Ave, Garden City, NY
      View Details
    • Contact for pricing
      11,000 SF

      Class A Office Building

      Three-story office building with 24/7 access and high traffic exposure.
      1103 Stewart Ave, Garden City, NY
      View Details
    • Contact for pricing
      9,046 SF

      Garden City Office Space Available

      9,046 SF office space available for lease.
      1000 Stewart Avenue, Garden City, NY, 11530
      View Details
    • Contact for pricing
      26,119 SF

      Garden City Office Space Available

      26,119 square foot office space for rent.
      585 Stewart Avenue, Garden City, NY, 11530
      View Details
    • $25 SF/Yr

      Garden City Office Space Available

      Office spaces for lease in Garden City, New York.
      1205, 1305, 1225 & 1325 Franklin Avenue, Garden City, NY 11530
      View Details
    • Contact for pricing
      30,000 SF

      Garden City Three-Story Office Building

      Three-story office building in Garden City available for rent.
      630 Old Country Rd, Garden City, NY
      View Details
    • $25 SF/Yr
      4,300 SF

      Garden City Warehouse Space Available

      Industrial warehouse space available for lease in Garden City.
      582 Brook St, Garden City, NY
      View Details
    • Contact for pricing
      2,688 SF

      Garden City Office Space Available

      Office space for sale in a convenient Garden City location.
      901 Stewart Ave, Garden City, NY
      View Details
    • Contact for pricing

      Prime Office Space Sublease

      Office space available for sublease.
      100 Quentin Roosevelt Blvd, Garden City, NY 11530
      View Details

    FAQs

    What type of property is this?
    Office building - Recently renovated office spaces with modern amenities available for rent.
    Where is this office building located?
    The property is located at 900 & 990 Stewart Avenue Garden City, NY.
    What are key features of this property?
    This property features: Multi‑million dollar renovations recently completed.; Renovations include main lobby, common hallways, landings and bathrooms.; Collaborative work areas.
    (631) 370-6090
    We can help!
    Listing Contact
    Robert Seidenberg
    Learn More
    Request Owner's contact information
    Message sent successfully
    Error
    If you are the owner or broker of this property and would like to edit or remove this listing please send a message to web site administrator.
    Message sent successfully
    Error
    Email to Your Friends
    Link copied to clipboard
    Separate multiple addresses with a comma
    Message sent successfully
    Error

    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
    Thanks! Your message was sent.
    Error! Your message wasn't sent.
    Please enter your name
    Please enter email
    Please enter the email in the correct format
    Please enter phone
    Please enter the number in the correct format
    Please enter message
    Thank You

    You are Unsubscribed From Notifications

    Thank You for Inquiry
    900 & 990 Stewart Avenue, Garden City, NY, 11530
    letter with green check mark
    Check your email
    We sent you the
    agent's contact details. yellow underline
    Can't find it?
    Please check your junk/spam folder.
    Google sign-in failed. Please try again or use another login method.
    Sign Up Successful!
    You now have access to more from Realmo!