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

    1520 North Mountain Avenue, Ontario, CA 91762

    View on Map
    Claim this Listing
    For Lease
    $2 SF/Yr $1,926/Mo (calc)

    High-speed internet, elevator access, and ample parking included.

    Type:Office
    Property size:
    10,507 SF
    Added:
    Nov 22, 2025
    Days on Market:
    192
    Last Refresh:
    May 19 at 8:58 pm

    Property Features for 1520 North Mountain Avenue

    General Information

    Standard status
    Active
    Size
    10,507 SF
    Property subtype
    Office

    Spaces For Lease

    at 1520 North Mountain Avenue Contact us

    We can help!

    Listing Contact
    Steven Saunders

    Listing agent Steven Saunders License #01932948

    Listing office CBRE

    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

    HighLights

    • Quick access to the 10, 60, and 210 Freeways providing connectivity to the greater Los Angeles Metro area.
    • High‑speed internet connectivity.
    • Ample parking for employees and visitors.
    • Elevator access.
    • Proximity to San Antonio Community Hospital and Pomona Valley Community Hospital.
    • Upland Metrolink approx. 6 minutes away.

    Overview

    This office space offers high-speed internet connectivity and elevator access. Ample parking is available for both employees and visitors. The building features modern architecture and a stylish design, with spacious and well-lit common areas. The property provides quick access to the greater Los Angeles Metro area via the 10, 60, and 20 Freeways. It is located in close proximity to San Antonio Community Hospital and Pomona Valley Community Hospital. The Upland Metrolink is approximately 6 minutes from the project. The property size is 10507 square feet.
    Property Profile Location Intelligence

    Current Use by Public Records

    Heavenly Nuts and Sweets Specialty Food Shop New Century Dental ... Dental Office Juice It Up! Specialty Food Shop Dream Big Children’s ... Training Center Casa Jimenez Restaurant

    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
    Ontario
    County
    San Bernardino
    State
    California
    Longitude
    -117.669
    Latitude
    34.0855

    Nearby Similar for Lease

    • $8,242/Mo
      3,110 SF

      Class A Office Space Available

      Premium office suites with lake views in Ontario, CA.
      3257 E Guasti Road, Ontario, CA 91761
      View Details
    • $5,489/Mo
      2,071 SF

      Class A Office with Lake Views

      Premier office space in Ontario's Centrelake Business Park.
      3237 E Guasti Road, Ontario, CA 91761
      View Details
    • $19,144/Mo
      7,224 SF

      Class A Office Space Available

      Move-in ready office space in Ontario, CA for lease.
      3200 E Guasti Road, Ontario, CA 91764
      View Details
    • $6,279/Mo
      2,563 SF

      Ontario Office Building For Lease

      Multi-tenant office building in Ontario Airport submarket available for lease.
      430 N Vineyard Avenue, Ontario, CA 91764
      View Details
    • $39,080 SF/Yr
      14,747 SF

      Class A Office Space Available

      Prime Ontario location with freeway access and ample parking.
      3450 Center Lake Drive, Ontario, CA 91761
      View Details
    • $13,610/Mo
      5,136 SF

      Ontario Class A Office Space

      Class A office space available for lease in Ontario, CA.
      3110 E Guasti Road, Ontario, CA 91761
      View Details
    • $10,131/Mo
      3,823 SF

      Class A Office Space Available

      Move-in ready office space near Ontario International Airport.
      3200 E Guasti Road, Ontario, CA 91764
      View Details
    • $8,528/Mo
      3,218 SF

      Ontario Office Space For Lease

      Professional office space for lease in Ontario, California.
      3281 E Guasti Road, Ontario, CA 91761
      View Details
    • $2,525/Mo
      953 SF

      Class A Office Space Available

      Multi-tenant office building near Ontario Airport and Ontario Mills.
      3110 E Guasti Road, Ontario, CA 91761
      View Details
    • $7,510/Mo
      2,834 SF

      Class A Office Building Lease

      Class A office space available near Ontario Airport.
      3450 Center Lake Drive, Ontario, CA 91761
      View Details
    • $7,950/Mo
      3,200 SF

      Modern Office Space Available

      First-floor office with reception, offices, conference rooms, kitchen, parking.
      3998 Inland Empire Boulevard, Ontario, CA 91764
      View Details
    • $22,930 SF/Yr
      8,653 SF

      Class A Office Space Available

      Prime office space in Ontario, near airport and retail.
      3110 E Guasti Road, Ontario, CA 91761
      View Details

    FAQs

    What type of property is this?
    Office units - High-speed internet, elevator access, and ample parking included.
    Where is this office units located?
    The property is located at 1520 North Mountain Avenue Ontario, CA.
    What is the lease rate?
    The lease rate is $2 SF/Yr.
    What are key features of this property?
    This property features: Quick access to the 10, 60, and 210 Freeways providing connectivity to the greater Los Angeles Metro area.; High‑speed internet connectivity.; Ample parking for employees and visitors.
    (909) 418-2006
    We can help!
    Listing Contact
    Steven Saunders
    Real Estate License ID: 01932948
    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
    1520 North Mountain Avenue, Ontario, CA, 91762
    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!