SpaceX’s millionaire boom could make Brownsville homes — and some tax bills — more expensive

By José Martinez

The thousands of potential millionaires created by SpaceX’s initial public offering may push up housing values in Brownsville and, in some cases, drive up homeowners’ property tax bills, according to a Texas-based housing economist.

The caution comes amid years of increasing property values in Brownsville, outpacing increases in neighboring cities, and as housing affordability remains a challenge.

“At least on paper, everyone may feel richer, but for a lot of the modest to low-income households, I wonder about to what extent they directly benefit from the housing boom and also wonder about potential gentrification or displacement,” Yanling Mayer, a research economist at the Texas Real Estate Research Center housed at Texas A&M University, told the Rio Grande Valley Business Journal.

In an analysis published last month, Mayer pointed to a New York Times report, which relied on an analysis by investment platform Hill, noting that more than 4,000 current and former SpaceX employees could have become millionaires during the company’s IPO earlier this summer.

Since newly wealthy SpaceX employees in the Brownsville area may have a higher willingness to pay above asking prices for homes, Mayer said it could result in higher home valuations for nearby properties. 

Recent sales are one of the most important data points in mass appraisal calculations, especially in places like Brownsville where market conditions are rapidly changing, the economist noted.

Higher valuations could then contribute to costlier tax bills, although tax exemptions and lower local tax rates could limit the increase.

Mayer’s analysis of yearly property data found that the median property appraisal value in Cameron County more than doubled from 2019 to 2025 — faster than the statewide median increase. Meanwhile, the median homeowner property tax bill in Cameron County jumped 57% from 2019 to 2025, higher than the state’s 42% increase.

A review of recently certified Cameron County appraisal rolls by the Journal shows that of the roughly 51,300 single-family homes in Brownsville with an existing residential structure, nearly half saw increases in market values, and just under a third saw a decrease from the prior year.

The next property tax bill for Cameron County homeowners will be due in January 2027, but it’ll be based on January 2026 appraisals. Any changes occurring post-SpaceX IPO could be reflected in 2027 appraisal rolls, and those property tax bills won’t be due until January 2028.

The economist said the scenario is reminiscent of when tech IPOs generated new wealth and similar housing demand pressures in Silicon Valley. 

But how the housing market reacts in Brownsville, could differ.

“Brownsville does not face the kind of supply constraint that constrained Silicon Valley,” Mayer said, pointing to an abundance of land to build on in Cameron County as opposed to Silicon Valley’s urban makeup.

All the while, Mayer said residents may be priced out if incomes don’t follow the trend of home values. 

The research center where Mayer works calculates a Texas Housing Affordability Index, which is based on the relationship between a region’s median family income and the amount of money needed to purchase a median-priced home.

According to the index, in the second quarter of 2026, the median family income in the Brownsville-Harlingen metro area was 1% higher than the required income needed to purchase a median-priced home. 

However, in the 2010s, the median family income there was sometimes more than 50% higher than the required income needed to buy a home.