Ricardo Salazar · REALTOR® · TREC #643769 · RCR Real Connect Realty (broker license #9012393)

Investor sheet · MLS# 29778320 · https://ricosalazar.com/properties/3552-old-port-isabel-rd-brownsville-tx-78526-29778320

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For sale

$375,000

3552 Old Port Isabel Rd., Brownsville, TX 78526

units: 2
ft²: 4,064

Est. cap rate 5.6% See the numbers →

MLS# 29778320 · Listed by Michael Hernandez, KELLER WILLIAMS LRGV · Tel. 956-423-8877

TypeIncome property
Year built2021
Lot0.25 acres
Price / ft²$92
Rent (MLS)$3,450/mo
Port of Brownsville≈ 5 min approx.

Virtual tour Ask for a video walkthrough

Description

Great Investment Opportunity in Brownsville, Texas and close to Space X! Welcome to 3552 Old Port Isabel Rd! This duplex property features modern construction, brick veneer exterior, central heating and air conditioning, and a functional layout designed for comfortable living. Conveniently located on Old Port Isabel Road, you'll enjoy quick access to shopping, dining, schools, and major roadways while being just a short drive from Brownsville's amenities and South Padre Island. Approximately 35–40 minutes from SpaceX Starbase, making it an excellent location for SpaceX employees and contractors. Approximately 20 to the Rio Grande LNG facility in Brownsville. All appliances pictured convey and some photos are virtually staged. Schedule your showing today! This Duplex will not last at this price!

Property details

Type: Income property · Multi Family
Status: For sale
MLS#: 29778320
Price: $375,000
Price per ft²: $92
Units: 2
Living area: 4,064 ft²
Lot size: 0.25 acres
Year built: 2021
Subdivision: El Jardin Sdbv
City: Brownsville
County: Cameron
Days on market: 91
Listed: Jul 29, 2026
Last updated: Jul 29, 2026, 5:04 PM CT

Numbers for investors

Price per ft²

$92

Source: MLS listing

Current rent

$3,450/mo

Gross yield 11.0%

Source: MLS listing

Days on market

Source: MLS listing

Est. fixed costs per month: $1,000/mo Est.
Cash to close with 25% down: $105,000 Est.
Est. cap rate: 5.6% Est.

How we calculate the cap rate, and how accurate it is

General information only, not legal, tax or financial advice. Ricardo Salazar is a licensed real estate agent, not an attorney, CPA or lender. Consult qualified professionals in the U.S. and Mexico.

Investment calculator · Estimates

What could it earn?

Purchase

Price

List price per the MLS. Try your own offer.

Down payment25%

100% = cash purchase, no loan.

Interest rate7%

Planning assumption, not a lender quote.

Loan term

15 yrs 20 yrs 30 yrs

Income

Monthly rent

/mo

Current rent reported in the MLS listing.

Vacancy8%

Share of the year the property sits empty.

Expenses

Property tax

/yr

Estimated at 2.2% of the price per year. Verify it with the Cameron Appraisal District.

Insurance

/yr

Estimated at 1% of the price per year; coastal wind coverage can cost more.

HOA

/mo

If the property has an HOA, enter the monthly dues.

Maintenance5%

% of collected rent.

Property management8%

% of collected rent, if you hire a manager.

Closing costs3%

Buyer side: title, appraisal, lender fees (estimate).

I am a foreign buyer (no SSN)

Monthly cash flow Est.

−$110

With these assumptions the cash flow is negative; try a different down payment or rent.

5.6% How it’s calculated

−1.3%

Estimated monthly cost

Mortgage $1,871
Tax $688
Insurance $313
HOA $0
Operations $413

Mortgage payment (P&I): $1,871/mo
Rent after vacancy: $3,174/mo
Total monthly cost: $3,284/mo
Net operating income (NOI): $21,137/yr
Down payment: $93,750
Closing costs (est.): $11,250
Cash needed at closing: $105,000

Review these numbers with Ricardo

Illustrative estimates only, not financial advice or a guarantee of results. Assumptions are editable; taxes, insurance, rent and rates vary. Verify with a lender, insurer and CPA.

How we calculate the cap rate, and how accurate it is

Cap rate = NOI ÷ price. NOI is the rent you would collect in a year, after vacancy, minus the costs of running the property. The loan is left out, so the cap rate measures the property as if you paid cash.

Gross rent, 12 months MLS listing: $41,400
Rent per unit (2 units), per month: $1,725/mo
Gross yield: rent ÷ price, before costs: 11.0%
minus Vacancy (8% of gross rent) Assumption: $3,312
equals Rent collected: $38,088
minus Property tax Estimate: $8,250
minus Insurance Estimate: $3,750
minus HOA dues, 12 months Not provided: $0
minus Maintenance (5% of rent collected) Assumption: $1,904
minus Management (8% of rent collected) Assumption: $3,047
equals Net operating income (NOI): $21,137
divided by Price MLS listing: $375,000
equals Cap rate: 5.6%

Amounts are rounded to the dollar; the cap rate uses the exact figures.

Is it accurate?

It is an estimate, not a quote or a guaranteed return. It is only as good as its inputs:

From the MLS listing: price, rent
From a rent comparable:
Your figures:
Our estimates and assumptions: property tax, insurance, vacancy, maintenance, management
Not provided, counted as $0: HOA
Missing:

MLS figures are what the listing reports. We have not verified them.
The tax on a listing is the seller’s last bill, and it can be lower than what you will pay: a homestead exemption, the 10% cap on homestead appraisals and an over-65 or disability tax ceiling do not carry over to an investor.
Listings in this MLS do not include property tax, so unless you enter your own figure we use 2.2% of the price a year. Look up the property’s value and taxing units at the Cameron Appraisal District (opens in a new tab); a rental does not get the homestead exemption.
If a listing advertises its own cap rate, it may leave out vacancy, management or other costs, which makes it look higher.
To confirm it, ask for the current lease or rent roll, last year’s tax bill (Cameron County Tax Assessor-Collector) and your own insurance quote from a Texas-licensed agent; coastal wind and flood coverage can cost much more. For a specific property, Ricardo can ask the listing agent for the lease, the tax bill and what the seller pays for insurance.

What it leaves out

The mortgage. Your loan shows up in cash flow and cash-on-cash, not in the cap rate.
Big repairs and replacements (roof, A/C, appliances) and savings set aside for them.
Utilities, lawn care or pest control, if the owner pays them.
Closing costs, leasing fees, income taxes in the U.S. or Mexico, and depreciation.

Location and drive times

3552 Old Port Isabel Rd., Brownsville, TX 78526 Open in Google Maps (opens in a new tab)

Port of Brownsville≈ 5 min approx.
UTRGV Brownsville campus≈ 10 min approx.
Gateway International Bridge≈ 10 min approx.
Veterans International Bridge at Los Tomates≈ 10 min approx.
B&M International Bridge≈ 10 min approx.
South Padre Island (Queen Isabella Causeway)≈ 30 min approx.
SpaceX Starbase launch site, Boca Chica≈ 30 min approx.

Approximate car times computed from the map: city pace for the first 10 km, highway pace after that, and trips that would cross the ship channel go around it by the Port. They do not include traffic, bridge waits or launch-day road closures.