Among the tools Mr. Vitrofsky uses in his work: air-purification systems that remove impurities, pathogens and (for a steeper price) particles that carry viruses; custom water filters based on local aquifer data; and dawn-simulation lighting that mimics natural sunlight.

Most of Mr. Vitrofsky’s clients are wealthy, but his company’s packages start as low as $2,500 for a simple installation that includes basic lighting, air and water monitoring with Darwin technology. From there, the prices climb exponentially.

Mr. Feirstein, who hired HEDSouth to customize the technology in his home, spent around $300,000. “Doug got the best in class of everything,” Mr. Vitrofsky said.

Since the onset of the pandemic, Mr. Vitrofsky said, he has seen interest in his company’s services more than double. “Whole Foods is wellness, Smartwater is wellness, Equinox gym is wellness — everybody has taken this wellness term to try to sell their product,” he said. “But nobody was talking about wellness on its own. Now the whole world is focused on being healthy, on not wanting to die.”

In Florida, the epicenter of real-estate wellness, some developments are taking health tracking a step further by building homes with private on-site health care. CC Homes, a builder in South Florida, last month announced a partnership with Baptist Health South Florida. Residents of two of its communities, Canarias at Downtown Doral and Maple Ridge at Ave Maria, will receive telemedicine services from Baptist doctors through a health kit that includes HD cameras and infrared thermometers that will check on ears, noses, eyes and lungs, all from within their own homes.

And in downtown Miami, the Legacy Hotel and Residences will include an on-site, AI-powered medical diagnostics center to track residents’ health using body scanning, posture analysis, blood work and more.

“As a society, we’re pretty consistently being told that technology and wearables will produce data about us, and what you can track you can change,” said Noah Waxman, the founder of Cactus, the company building out Legacy’s diagnostics center. “Spaces and places like this one are only becoming more desirable. Because there is no way that in the next five years your phone will be able to do what this diagnostic center can do.”

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