Average rent in Houston is $1,371 per month as of August 2026 (rent.com). This was the first number I showed to someone who came looking to supplement their living expenses with rental income after retirement. It was important to first understand what this number means in the context of retirement funding plans.

At the same time, the average value of homes in Houston is $264,789, which has decreased by 0.4% over the past year (Zillow Home Value Index). Property taxes in Harris County have an effective tax rate of around 2.03%, and the tax structure is relatively complex due to multiple taxing authorities overlapping even within Texas. Within Houston, property taxes and purchase prices can vary significantly depending on the school district.

The total return rate, calculated by dividing the annual rental income of $16,452 by the purchase price, is 6.21%. It should be noted that calculating the necessary monthly living expenses based solely on this number can present an overly optimistic picture.

Applying the 50% rule, if we consider operating costs to be half of the rental income, the net operating income would be $8,226 per year, and the cap rate would drop to 3.11%. If the retirement plan involves putting down the entire purchase amount in cash, this cap rate would closely reflect the effective yield. Conversely, if financing is involved, assuming a 25% down payment and closing costs, the actual investment amount would be around $74,000, with the remainder borrowed at an interest rate in the 7% range, resulting in annual payments exceeding the net operating income, leading to a negative cash-on-cash return.

This difference is particularly important in retirement funding plans. If one has the capacity to purchase in cash without a loan, a cap rate in the 3% range can translate directly into cash flow. However, if relying on rental income for retirement while having a loan, one may have to endure negative cash flow in the initial years. It was emphasized in this consultation that total returns should consider not only cash flow but also capital appreciation and asset growth from loan principal repayment.

In Houston, rental prices and property tax burdens can vary significantly by area. Areas preferred by Korean families tend to have higher purchase prices, resulting in lower cap rates, while relatively cheaper areas may have higher cap rates but could also face increased vacancy or management burdens. It is advisable to refer to GreatSchools or state education department ratings for school districts, but it is also recommended to verify the assigned school before purchasing.

A common question in retirement funding plans is whether it is better to take out a loan now to purchase or to save for a few more years to buy in cash. In a situation where the cap rate remains around 3%, if the loan interest rate is higher, leveraging can easily lead to a structure where cash flows out monthly. Conversely, even if it takes time, increasing the down payment proportion when purchasing can create a more stable structure for retirement income as cash-on-cash approaches the cap rate.

Houston's purchase prices are relatively low compared to other major cities in Texas, leading some to consider a strategy of diversifying by purchasing multiple properties with the same funds. However, it is important to balance this with the increased management burden and vacancy risk that come with a larger number of properties.

Ultimately, the conclusion drawn from this consultation was not to base retirement funding plans solely on rental income. It is safer to calculate cap rates, cash-on-cash returns, capital appreciation, and principal repayment separately, and conservatively estimate how much of the necessary living expenses can be covered by rental income after retirement. Recent market trends show that while Houston has relatively low purchase prices, the rate of rent increases has been gradual, which should also be considered in long-term planning.

When incorporating rental income into retirement funding plans, it is prudent to conservatively account for taxes, insurance, and vacancy losses. This article does not constitute investment or legal advice, and property taxes and rental laws can vary by county, so it is advisable to consult with a professional before finalizing any agreements.