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    321 5 Ave Portland, TX 78374

    For Lease
    $2,175 /Mo ($18 SF/Yr)

    COMMERCIAL - Portland, TX

    Type:Office
    Property size:
    1,450 SF
    Lot size:
    0.79 Acres
    Days on Market:
    22
    Last Refresh:
    Dec 8 at 7:06 pm

    Property Features for 321 5 Ave

    General Information

    Property type
    Commercial Lease
    Property subtype
    Office
    Standard status
    Active
    Rooms
    Bathroom 1
    Bathrooms
    1
    APN
    70456
    Parking
    8
    Parking features
    Off Street
    Patio and Porch features
    Porch, Patio
    Size
    1,450 SF
    Lot size
    0.79 Acres

    Utilities

    Heating system
    Electric (Heating), Central
    Cooling system
    Electric, Central Air

    Building Details

    Year built
    2003
    Floors in Building
    1
    Flooring type
    Tile, Vinyl

    Cass Real Estate (361) 643-2662

    Listing agent Brenton Reagan (512) 736-2695 License #0669077

    Listing date Nov 17, 2025

    Copyright © 2025 South Texas Multiple Listing Service, LLC. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

    Overview

    Portland Office Space For Lease

    This commercial property for lease, previously home to businesses such as a law firm and the main offices of an oil-and-gas company, is located across the street from Portland's city-acquired block in the heart of the new Leisure & Entertainment District. Community events such as the Families on Fifth concert series, the Cinco de Mayo Festival, and an Easter Egg hunt and gathering have taken place in the last year. With the building and street parking completed this year, the property is situated amidst new activity. This unit at 321 5th Avenue comprises approximately 1450 square feet of office space, including 4 individual offices, a reception/waiting area, 2 separate open areas, a kitchenette, and a restroom. The property is situated on a lot of 0.79 acres. This is a gross lease except for electricity, with no assessments for NNN. Water, sewer, and trash services are included in the rent amount. No dumpsters are allowed on the property. The tenant is responsible for electricity for this unit, as well as any other items such as internet, cable, or security systems, if desired. Optional attached garage space is available under a separate listing. The property is located in Portland, Texas, in San Patricio County.
    Location Intelligence

    Current Use by Public Records

    Office space

    Map

    City
    Portland
    County
    San Patricio
    State
    Texas
    Longitude
    -97.2907
    Latitude
    27.9445

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    FAQs

    What type of property is this?
    Office space - Commercial office space in Portland's Leisure & Entertainment District.
    Where is this office space located?
    The property is located at 321 5 Ave Portland, TX.
    What is the lease rate?
    The lease rate is $18 SF/Yr.
    What are key features of this property?
    This property features: - Prime location in the heart of Portland's new Leisure & Entertainment District (LED), across from the City-acquired block.; - Versatile ~1450 SF office space featuring 4 individual offices, reception/waiting area, 2 open areas, kitchenette, and restroom.; - Gross lease (excluding electricity) with water/sewer/trash included and no NNN assessments.
    (512) 736-2695
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    Realmo Value Estimation

    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.

    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.

    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
    321 5 Ave Portland, TX 78374
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