Add Listing
    For Sale
    • For Sale
    • For Lease
    • Recently Sold
    • Property Lookup
    • Brokers
    Back to Search
    The Largest CRE Database in the US with Over 1 Million Listings

    340 W Caroline St Ontario, CA 91762

    View on Map
    Claim this Listing
    New
    Loading data...
    Loading data...
    Loading data...
    For Sale
    $1,100,000

    Spacious 7-bedroom home with a detached 1-bedroom ADU.

    Type:Investment
    Added:
    Apr 24, 2026
    Days on Market:
    5
    Last Refresh:
    Apr 24 at 4:34 pm

    Property Features for 340 W Caroline St

    General Information

    Standard status
    Active
    Property subtype
    Investment

    Building Details

    Year Built
    1964

    We can help!

    Listing Contact
    Richie Herrera

    Listing agent Richie Herrera License #01974804

    Listing office JohnHart Real Estate

    Listing date Apr 24, 2026

    Source Elliman

    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 JohnHart Real Estate

    Overview

    Ontario Home with Detached ADU

    Located in Ontario, this property features a 7-bedroom, 4-bathroom home with a spacious living area, high ceilings, and a brick fireplace. The residence includes laminate flooring and a kitchen equipped with appliances, a range hood, and storage space. Each bedroom offers built-in closets and shelving. The property has front and backyard space. A detached 1-bedroom, 1-bathroom ADU is located in the rear. The property is currently generating over $8,200 per month in rental income between the main house and the ADU. The bike score is 69, making it bikeable. The walk score is 71, indicating it is very walkable, and the transit score is 40, suggesting some transit options are available.
    Location Intelligence

    Current Use by Public Records

    Multifamily properties

    Suggested Use

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

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

    Location Insight

    • Map
    • Local Demand
    City
    Ontario
    County
    San Bernardino
    State
    California
    Longitude
    -117.6547474
    Latitude
    34.0862254

    Nearby Similar for Sale

    • $2,900,000
      14,530 SF

      Ontario Retail/Office Building For Sale

      Retail/Office building in prime Ontario location with high traffic volume.
      910 N Mountain Avenue, Ontario, CA 91762
      View Details
    • $965,000
      2,175 SF

      Ontario Industrial Condo For Sale

      Well-maintained industrial condo with warehouse space in a clean business park.
      909 S Cucamonga, Ontario, CA 91761
      View Details
    • $200,000

      Restaurant Business Opportunity in Ontario

      Restaurant business for sale in revitalizing Ontario corridor.
      765 W Holt, Ontario, CA 91762
      View Details
    • $1,225,000
      3,006 SF

      Ontario Commercial Property For Sale

      Retail showroom, office, and warehouse near Ontario International Airport.
      1795 E Holt, Ontario, CA 91761
      View Details
    • $899,000
      2,413 SF

      Ontario Duplex with ADU

      Two homes on one lot, conveniently located and fully rented.
      627 E Ralston Street, Ontario, CA 91761
      View Details
    • $1,190,000
      3,308 SF

      Ontario Commercial Space with Warehouse

      Renovated commercial space with offices and warehouse in Ontario.
      1115 S Grove Avenue, Ontario, CA 91761
      View Details
    • $1,100,000
      3,446 SF

      Ontario Residence with ADU

      Spacious 7-bedroom home with detached ADU, generating rental income.
      340 W Caroline Street, Ontario, CA 91762
      View Details
    • $800,000

      Trade Show Booth Fabrication Company

      Profitable trade show booth fabrication company serving North America.
      620 S Magnolia Avenue, Ontario, CA 91762
      View Details
    • $2,100,000
      4,556 SF

      Ontario Six-Unit Multifamily Property

      Six-unit property with ADU potential in a desirable Ontario neighborhood.
      430 E I, Ontario, CA 91764
      View Details
    • $1,868,000
      5,338 SF

      Office/Industrial Property in South Ontario

      Office/Industrial property with high image office buildout near Ontario Airport.
      1600 S Grove Suite A, Ontario, CA, 91761
      View Details
    • $150,000
      1,300 SF

      Turnkey Restaurant Business Opportunity

      Prime Ontario, CA location near the 15 Freeway and Auto Center.
      Ontario, CA 91761
      View Details
    • $1,080,000
      3,672 SF

      Ontario Multifamily Investment Opportunity

      Four-unit multifamily property in Ontario, California with value-add potential.
      1228 W Rosewood Ct, Ontario, CA 91762
      View Details

    FAQs

    What type of property is this?
    Multifamily property - Spacious 7-bedroom home with a detached 1-bedroom ADU.
    Where is this multifamily property located?
    The property is located at 340 W Caroline St Ontario, CA.
    What is the asking price?
    The asking price for this property is $1,100,000.
    What are key features of this property?
    This property features: High Rental Income: Generating over $8,200/month from main house and ADU.; Detached ADU: Includes a 1 bedroom, 1 bathroom Accessory Dwelling Unit perfect for guests, family, or generating extra rental income.; Spacious 7 Bedroom Home: Offers ample living space with generously sized bedrooms and built‑in closets.
    (818) 606-9891
    We can help!
    Listing Contact
    Richie Herrera
    Real Estate License ID: 01974804
    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

    Google sign-in failed. Please try again or use another login method.
    Sign Up Successful!
    You now have access to more from Realmo!