4-Unit Two-Story
817 E MADISON AVE, Harlingen, TX 78550
For Sale
New
$249,900
Residential Income, HARLINGEN, TX
Property Size2,600 SF
Lot Size0.15 Acres
Price / SF$96.12
Days on Market2
Property Features for 817 E MADISON AVE
General Information
Property type
Property subtype
Patio and Porch features
Interior features
Exterior features
Fencing
Appliances
Subdivision
Elementary school
Middle school
High school
Elementary school district
Middle school district
High school district
Standard status
Size
Lot size
Additional Details
Tenant in Place
Utilities
Sewer type
Heating system
Cooling system
Water source
Building Details
Year built
Floors in Building
Number of units
Flooring type
Listing Agency:
KELLER WILLIAMS LRGV · Keller Williams Realty
(956) 423-8877
Listed By:
AUDREY KRUPALA · License TX #672812
(956) 245-8310
Added: Nov 12
Last Checked: Nov 13 at 11:06PM
MLS# 29780953
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.
Ask AI about this property
Review the available facts, identify missing information and prepare questions for the agent.
Investment Insights
Based on property information with market context.
This two-story quadplex contains four units, each configured with two bedrooms and one bathroom. The building totals 2,600 square feet on a 0.1529-acre parcel and was constructed in 1984. Current leases are in place across all four residences.
Six parking spaces serve the property. Interior features include ceiling fans, carpet, and range and refrigerator appliances; heating and cooling are central electric. The site has a porch, chain-link fencing, public water, and public sewer.
Six parking spaces serve the property. Interior features include ceiling fans, carpet, and range and refrigerator appliances; heating and cooling are central electric. The site has a porch, chain-link fencing, public water, and public sewer.
Key Highlights
- Four units, each with 2 bedrooms and 1 bathroom
- All four units currently leased
- 2,600‑square‑foot building on 0.1529 acres
Financial Insights
Estimated NOI and Cap Rate
NOI / Yr
$21,451
Cap Rate
8.58%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$429,020
$429.0K
Cap Rate 7%
$306,443
$306.4K
Cap Rate 9%
$238,344
$238.3K
Market Conditions
NOI Build-Up for 2,600 SF
Gross rent
$32.8K $12.60/SF
− Vacancy
−$2.1K −$0.81/SF
EGI
$30.6K $11.79/SF
− OpEx
−$9.2K −$3.54/SF
NOI
$21.5K $8.25/SF
Area
Cameron County, 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%
$429,020
Cap Rate 7%
$306,443
Cap Rate 9%
$238,344
Alternative Uses
Best Use
Multifamily LT 5
$306.4K
$268.1K – $357.5K
NOI $21,451 @ 7.0% cap · market cap 8.58%
Second Best
Apartment 5plus
$281.0K
$245.9K – $327.9K
NOI $19,672 @ 7.0% cap · market cap 7.87%
Theoretical Best
Healthcare Medical
$447.7K
$391.7K – $522.3K
NOI $31,337 @ 7.0% cap · market cap 12.54%
Zoning and permitted uses should be independently verified with authorities.
How Realmo checks its estimates
Property Analytics
Who owns this building?
See the owner, sales and loan history
Open Analytics
Lease Details
4
Residential units
100%
Occupancy
Location Intelligence
Trade Area within ½ mile
1,761
Businesses Nearby
Explore this area
Business Placement
Demographics for 78550, TX
56,038
Population
22,347
Households
2.5
Avg Household Size
35
Median Age
22%
College-Educated
77%
High-School Grad
94.2 sq mi
ZIP Area
595
Density / Sq Mi
$51,524
Median Household Income
$32,065
Median Earnings
$863
Median Rent
$120,500
Median Home Value
Check the figures for this property
Cap Rate, Value Estimation, Potential NOI and more
View Realmo Analytics
Market
Vacancy Rate% for Multifamily in South region
Frequently Asked Questions
What type of property is this?
Quadplex - All four residences are leased, with each offering two bedrooms and one bathroom.
Where is this quadplex located?
The property is located at 817 E MADISON AVE Harlingen, TX.
What is the asking price?
The asking price for this property is $249,900.
What are key features of this property?
This property features: Four units, each with 2 bedrooms and 1 bathroom; All four units currently leased; 2,600‑square‑foot building on 0.1529 acres
