Modern Duplex with
New
For Sale
$375,000
3552 OLD PORT ISABEL RD., Brownsville, TX 78526
MULTI_FAMILY - BROWNSVILLE, TX
Property Size4,064 SF
Lot Size0.25 Acres
Price / SF$92.27
Days on Market3
Property Features for 3552 OLD PORT ISABEL RD.
General Information
Property type
Residential Multi Family
Property subtype
Other
Patio and Porch features
Patio
Interior features
Cable TV, Ceiling Fan(s), Smoke Alarm(s)
Exterior features
Patio
Fencing
Privacy
Subdivision
EL JARDIN SDBV
Lot features
Curb & Gutter
Elementary school
PENA
Middle school
GARCIA
High school
RIVERA
Elementary school district
BROWNSVILLE I.S.D.
Middle school district
BROWNSVILLE I.S.D.
High school district
BROWNSVILLE I.S.D.
Standard status
Active
Size
4,064 SF
Lot size
0.25 Acres
Utilities
Sewer type
Public Sewer
Heating system
Central
Cooling system
Central Air
Water source
Public
Amenities
central heating and air conditioning
Building Details
Year built
2021
Floors in Building
1
Number of units
2
Flooring type
Tile
Listing Agency:
KELLER WILLIAMS LRGV · Keller Williams Realty
(956) 423-8877
Listed By:
MICHAEL HERNANDEZ
(956) 200-7732
Added: Jul 29
Changed: Jul 30
Last Checked: Jul 31 at 5:06AM
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.
Investment Insights
Based on property information with market context.
This modern duplex at 3552 Old Port Isabel Rd was built in 2021 and offers a functional residential layout. The home includes central heating and central air, tile flooring, and interior amenities such as ceiling fans, cable TV, and smoke alarms. The exterior features a patio with privacy fencing, supporting comfortable outdoor use.
Set on a 0.254-acre lot with 4,064 square feet of building area, the property is connected to public water and public sewer. It is located on Old Port Isabel Rd, providing quick access to shopping, dining, schools, and major roadways. The seller notes the home is approximately 35–40 minutes from SpaceX Starbase and approximately 20 minutes from the Rio Grande LNG facility in Brownsville.
All appliances pictured convey.
Set on a 0.254-acre lot with 4,064 square feet of building area, the property is connected to public water and public sewer. It is located on Old Port Isabel Rd, providing quick access to shopping, dining, schools, and major roadways. The seller notes the home is approximately 35–40 minutes from SpaceX Starbase and approximately 20 minutes from the Rio Grande LNG facility in Brownsville.
All appliances pictured convey.
Key Highlights
- Built in 2021 modern duplex with central heating and central air
- 0.254‑acre lot with 4,064 SF building area
- Patio with privacy fencing for outdoor privacy
Financial Insights For Multifamily LT 5
Simulate Cap Rate and NOI
NOI Build-Up
- Vacancy
- income lost from leasable area expected to sit empty during the year — subtracted from gross rent.
- EGI (Effective Gross Income)
- gross rent minus vacancy losses — the realistic income before paying operating costs.
- OpEx (Operating Expenses)
- recurring costs to operate the property (property tax, insurance, utilities, maintenance, management) — excludes financing and capital improvements.
- NOI (Net Operating Income)
- income a property generates after operating costs but before financing and taxes.
| Component | $ | $/SF |
|---|---|---|
| Gross rent | $51.2k | $12.60 |
| − Vacancy | −$3.3k | −$0.81 |
| EGI | $47.9k | $11.79 |
| − OpEx | −$14.4k | −$3.54 |
| NOI | $33.5k | $8.25 |
4,064 SF · lease $12.60/SF/yr · vacancy 6.46% · expense 30.00%
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.
Property Analytics
Property Profile
Current Use
Lease Details
Multi-tenant
Tenancy
Yes
Paved road access
Location Intelligence
Trade Area within ½ mile
195
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
Market
Vacancy Rate% for Multifamily in South region
Questions? Ask Rey
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Frequently Asked Questions
What type of property is this?
Duplex - Modern 2021 duplex with central HVAC, tile flooring, and a private patio plus public water and sewer.
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: Built in 2021 modern duplex with central heating and central air; 0.254‑acre lot with 4,064 SF building area; Patio with privacy fencing for outdoor privacy
