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    Four-Unit Property with Expansion Potential Title is generated by Realmo AI

    5 C St, San Diego, CA 92102

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    For Sale
    $1,295,000

    Four units with plans for two additional units in San Diego.

    Type:Investment
    Property size:
    3,118 SF
    Lot size:
    0.13 Acres
    Price / SF:
    $415/SF
    Added:
    May 19, 2026
    Days on Market:
    12
    Last Refresh:
    May 19 at 8:07 am

    Property Features for 5 C St

    General Information

    Standard status
    Active
    Size
    3,118 SF
    Lot size
    0.13 Acres
    Property subtype
    Investment

    Building Details

    Year Built
    1951

    We can help!

    Listing Contact
    Benn Vogelsang
    Benn Vogelsang

    Listing agent Benn Vogelsang License #DRE01883437

    Listing office NorthMarq - San Diego

    Listing date May 19, 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 NorthMarq - San Diego

    HighLights

    • Plans for two additional 2‑bedroom ADUs, increasing unit count and potential income.
    • Four existing units provide immediate rental income.
    • Located on a corner lot with alley access.
    • 5+ parking spaces after ADU construction.
    • City views from parts of the property.
    • Desirable Mount Hope location in San Diego.

    Overview

    Located in the Mount Hope neighborhood of San Diego, the property at 4103-5 C Street features four units with plans for two additional two-bedroom units. Constructed around 1951, the multiple structures total 3,118 square feet on a 5,871 square foot lot. The front, two-story structure includes a second-level three-bedroom, one-bathroom unit above a two-bedroom, one-bathroom ADU unit and a one-bedroom, one-bathroom unit. Additionally, there is a three-bedroom, one-bathroom house with frontage on 41st Street, as well as a pad in the rear designated for the construction of the two additional two-bedroom ADUs. Upon completion of the ADU construction, there will be 5+ parking spaces, including tandem spots. The property features brick and stucco construction, a composition roof, utility hookups, and city views from select areas. Situated on a corner lot, the property also benefits from alley access.
    Location Intelligence

    Current Use by Public Records

    Quadplexes

    Suggested Use

    Real Estate Agency Restaurant Spa & Massage Center Dental Office Hair Salon Law Firm 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
    San Diego
    County
    San Diego
    State
    California
    Longitude
    -117.164099
    Latitude
    32.7165754

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    FAQs

    What type of property is this?
    Quadplex - Four units with plans for two additional units in San Diego.
    Where is this quadplex located?
    The property is located at 5 C St San Diego, CA.
    What is the asking price?
    The asking price for this property is $1,295,000.
    What are key features of this property?
    This property features: Plans for two additional 2‑bedroom ADUs, increasing unit count and potential income.; Four existing units provide immediate rental income.; Located on a corner lot with alley access.
    (415) 250-4947
    We can help!
    Listing Contact
    Benn Vogelsang
    Benn Vogelsang
    Real Estate License ID: DRE01883437
    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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