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    Mixed-Use Building in Downtown Martinez Title is generated by Realmo AI

    702-712 Main Street, Martinez, CA 94553

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    Two-story mixed-use building with retail and office space.

    Property size:
    12,191 SF
    Added:
    Jan 27, 2026
    Days on Market:
    115
    Last Refresh:
    Jan 5 at 9:23 pm

    Property Features for 702-712 Main Street

    General Information

    Standard status
    Active
    Size
    12,191 SF

    We can help!

    Listing Contact
    John McDonough
    John McDonough

    Listing agent John McDonough License #100097364

    Listing office 8z Real Estate

    Listing date Jan 27, 2026

    Source Nmrk

    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 8z Real Estate

    HighLights

    • Flexible owner/user opportunity with ability to occupy all or part of the second floor.
    • Potential ability to convert the second floor to multi‑family residential.
    • High‑quality 'anchor' tenant in Starbucks.
    • Attractive historical building in the heart of downtown Martinez.
    • Upside through leasing remaining vacant 2nd floor office space.
    • Welcoming creek‑side setting with ample outdoor seating.

    Overview

    The City Hall Building, located at 702-712 Main Street in downtown Martinez, California, is a two-story mixed-use property encompassing approximately 12,191 square feet. Originally constructed in 1915 as an apartment building, the ground floor is currently leased to three tenants under triple net leases: Starbucks, Rob’s Zombies, and Rehabilitation and Employment Services. The second floor features office space occupied by tenants on shorter-term leases. This property offers flexibility for potential buyers, including the option to occupy all or a portion of the second floor, retain the current tenants as an investment, or potentially convert the second floor back to multi-family residential use. The building is an attractive historical structure situated in the heart of downtown Martinez, offering a welcoming creek-side setting with ample outdoor seating. There is potential upside through leasing the remaining vacant second-floor office space. The property also features a high-quality anchor tenant in Starbucks, and presents a flexible owner-user opportunity with the ability to occupy all or part of the second floor.
    Location Intelligence

    Current Use by Public Records

    Retail space

    Suggested Use

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

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

    Location Insight

    • Map
    • Local Demand
    City
    Martinez
    County
    Contra Costa
    State
    California
    Longitude
    -122.136395
    Latitude
    38.0172496

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    FAQs

    What type of property is this?
    Mixed-use property - Two-story mixed-use building with retail and office space.
    Where is this mixed-use property located?
    The property is located at 702-712 Main Street Martinez, CA.
    What are key features of this property?
    This property features: Flexible owner/user opportunity with ability to occupy all or part of the second floor.; Potential ability to convert the second floor to multi‑family residential.; High‑quality 'anchor' tenant in Starbucks.
    (925) 974-0100
    We can help!
    Listing Contact
    John McDonough
    John McDonough
    Real Estate License ID: 100097364
    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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    702-712 Main Street, Martinez, CA 94553 (City Hall Building)
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