Highway-Frontage Retail
For Sale
$598,699
505 E Highway 100, Port Isabel, TX 78578
Commercial Sale, Port Isabel, TX
Property Size3,080 SF
Lot Size0.11 Acres
Price / SF$194.38
Days on Market76
Property Features for 505 E Highway 100
General Information
Property type
Commercial Sale
Property subtype
Other
Zoning
C
Subdivision
Rutherford-Harding Addition
Elementary school district
Point Isabel ISD
Middle school district
Point Isabel ISD
High school district
Point Isabel ISD
Standard status
Active
Size
3,080 SF
Lot size
0.11 Acres
Taxes and HOA fees
Tax Year
2025
Tax Annual Amount
2976
Building Details
Year built
1996
Number of units
1
Listing Agency:
RE/MAX Elite · RE/MAX International
(956) 433-5648
Listed By:
Angel Torres · License #240_139
(512) 945-1240
Added: Jul 24
Changed: Oct 6
Last Checked: Oct 7 at 1:06PM
MLS# 106569
Copyright © 2026 South Padre Island Board of Realtors. 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 retail property contains a building constructed in 1996 and occupies a 0.11-acre parcel. The site is located at 505 E Highway 100 in Port Isabel, with the property situated on Highway 100.
Key Highlights
- Retail property on Highway 100
- 0.11‑acre parcel
- C zoning
Financial Insights
Estimated NOI and Cap Rate
NOI / Yr
$29,308
Cap Rate
4.90%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$586,160
$586.2K
Cap Rate 7%
$418,686
$418.7K
Cap Rate 9%
$325,644
$325.6K
Market Conditions
NOI Build-Up for 3,080 SF
Gross rent
$44.4K $14.40/SF
− Vacancy
−$2.5K −$0.81/SF
EGI
$41.9K $13.59/SF
− OpEx
−$12.6K −$4.08/SF
NOI
$29.3K $9.52/SF
Area
Cameron County, TX
Vacancy
5.60%
Lease Rate
$14.40 /SF/Yr
Expense Ratio
30.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates
Cap Rate 5%
$586,160
Cap Rate 7%
$418,686
Cap Rate 9%
$325,644
Alternative Uses
Best Use
Retail
$418.7K
$366.4K – $488.5K
NOI $29,308 @ 7.0% cap · market cap 4.90%
Second Best
—
—
no second resolved use
Theoretical Best
Healthcare Medical
$530.3K
$464.0K – $618.7K
NOI $37,123 @ 7.0% cap · market cap 6.20%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
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Current Use
Lease Details
Yes
Highway access
Location Intelligence
Trade Area within ½ mile
75
Businesses Nearby
Explore this area
Business Placement
Demographics for 78578, TX
10,076
Population
6,391
Households
1.6
Avg Household Size
45
Median Age
24%
College-Educated
83%
High-School Grad
57.0 sq mi
ZIP Area
177
Density / Sq Mi
$52,041
Median Household Income
$36,896
Median Earnings
$763
Median Rent
$193,700
Median Home Value
Check the figures for this property
Cap Rate, Value Estimation, Potential NOI and more
View Realmo Analytics
Market
Vacancy Rate% for Retail in South region
Questions? Ask Rey
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Frequently Asked Questions
What type of property is this?
Retail space - C zoning supports a commercial property designation.
Where is this retail space located?
The property is located at 505 E Highway 100 Port Isabel, TX.
What is the asking price?
The asking price for this property is $598,699.
What are key features of this property?
This property features: Retail property on Highway 100; 0.11‑acre parcel; C zoning
