Brick Duplex with Central
3552 OLD PORT ISABEL RD., Brownsville, TX 78526
For Sale
$375,000
Pending
Residential Income, BROWNSVILLE, TX
Property Size4,064 SF
Lot Size0.25 Acres
Days on Market104
Property Features for 3552 OLD PORT ISABEL RD.
General Information
Property type
Property subtype
Patio and Porch features
Interior features
Exterior features
Fencing
Subdivision
Lot features
Elementary school
Middle school
High school
Elementary school district
Middle school district
High school district
Standard status
Size
Lot size
Utilities
Sewer type
Heating system
Cooling system
Water source
Building Details
Year built
Floors in Building
Number of units
Flooring type
Buildings
Listing Agency:
KELLER WILLIAMS LRGV · Keller Williams Realty
(956) 423-8877
Listed By:
MICHAEL HERNANDEZ · License TX #196586158
(956) 200-7732
Added: Jul 29
Changed: Nov 5
Last Checked: Nov 9 at 7:06PM
MLS# 29778320
Copyright © 2026 Rio Grande Valley Multiple Listing Service Inc. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
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Investment Insights
Based on property information with market context.
Built in 2021, this duplex contains 4,064 square feet on a 0.254-acre parcel in Brownsville. The property has a brick veneer exterior, tile flooring, central heating and central air conditioning, and a practical residential layout. Interior features include ceiling fans, cable TV, and smoke alarms, while each unit benefits from patio space and privacy fencing. Appliances shown in the listing convey with the property, and some photography has been virtually staged.
Located at 3552 Old Port Isabel Rd., the property offers access to shopping, dining, schools, and major roadways. Brownsville amenities are nearby, and South Padre Island is within driving distance. The property is approximately 35–40 minutes from SpaceX Starbase.
Located at 3552 Old Port Isabel Rd., the property offers access to shopping, dining, schools, and major roadways. Brownsville amenities are nearby, and South Padre Island is within driving distance. The property is approximately 35–40 minutes from SpaceX Starbase.
Key Highlights
- 2021 construction with brick veneer exterior
- 4,064 square feet on 0.254 acres
- Central heating and central air conditioning
Financial Insights
Estimated NOI and Cap Rate
NOI / Yr
$33,529
Cap Rate
8.94%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$670,580
$670.6K
Cap Rate 7%
$478,986
$479.0K
Cap Rate 9%
$372,544
$372.5K
Market Conditions
NOI Build-Up for 4,064 SF
Gross rent
$51.2K $12.60/SF
− Vacancy
−$3.3K −$0.81/SF
EGI
$47.9K $11.79/SF
− OpEx
−$14.4K −$3.54/SF
NOI
$33.5K $8.25/SF
Area
Brownsville, TX
Vacancy
6.46%
Lease Rate
$12.60 /SF/Yr
Expense Ratio
30.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates
Cap Rate 5%
$670,580
Cap Rate 7%
$478,986
Cap Rate 9%
$372,544
Alternative Uses
Best Use
Multifamily LT 5
$479.0K
$419.1K – $558.8K
NOI $33,529 @ 7.0% cap · market cap 8.94%
Second Best
Apartment 5plus
$439.3K
$384.4K – $512.5K
NOI $30,748 @ 7.0% cap · market cap 8.20%
Theoretical Best
Healthcare Medical
$699.8K
$612.3K – $816.4K
NOI $48,983 @ 7.0% cap · market cap 13.06%
Zoning and permitted uses should be independently verified with authorities.
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Lease Details
2
Residential units
Yes
Paved road access
Location Intelligence
Trade Area within ½ mile
69
Businesses Nearby
Explore this area
Business Placement
Demographics for 78526, TX
55,164
Population
18,222
Households
3
Avg Household Size
32
Median Age
29%
College-Educated
79%
High-School Grad
47.4 sq mi
ZIP Area
1,164
Density / Sq Mi
$68,143
Median Household Income
$36,451
Median Earnings
$1,080
Median Rent
$158,300
Median Home Value
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Cap Rate, Value Estimation, Potential NOI and more
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Market
Average Price Trend$/SF for Duplexes in Brownsville, TX
Properties on Market for Duplexes in Brownsville
Vacancy Rate% for Multifamily in South region
Frequently Asked Questions
What type of property is this?
Duplex - Two-unit income property with tile flooring, patios, privacy fencing, and public water and sewer service.
Where is this duplex located?
The property is located at 3552 OLD PORT ISABEL RD. Brownsville, TX.
What is the asking price?
The asking price for this property is $375,000.
What are key features of this property?
This property features: 2021 construction with brick veneer exterior; 4,064 square feet on 0.254 acres; Central heating and central air conditioning
