Pollution, allergens and Covid have homeowners focusing on filtration systems and flexible designs to improve indoor air quality
7 min
Visitors to John Bautista and Pedro Salrach’s San Francisco home can’t get enough of the lap pool, sauna and movie theatre. But they also get a whiff of something else they value: clean air.
“The house smells new—and after two years it still smells new,” said Bautista, an attorney. “I know when I’m home because it smells clean and fresh.”
The six-bedroom home with seven bathrooms and two half-baths includes an elaborate air-filtration system meant to deal with the region’s varying air quality. The tightly sealed floor-to-ceiling windows and sliding doors offer hilltop views of the bay and access to the backyard without sacrificing air quality.
Bautista plans to further upgrade his system this year with the aim of filtering and recirculating indoor air rather than fresh outside air during periods of heavy pollution. Despite the home’s superior air quality, the family can still feel a difference on days when the outdoor air is filled with smoke. “We’ve suffered, as most people have in the Bay Area,” he said. “What we want to have is isolation.”
Developer Gregory Malin, who specialises in wellness-focused real estate, sold Bautista the home for $32 million, he said, plus an additional $5 million for fixtures and furnishings.
Luxury homeowners are known to splurge on sleek kitchens, custom decor and art, but they are increasingly turning their attention to something less visible. Forest-fire smoke, the pandemic and increased awareness of sensitivities to mould and other irritants are making their interior environment a priority.
Many are investing in complex systems and flexible designs that promise healthier indoor air but still include spaces, such as glass-enclosed rooms, that make being indoors feel natural.
Listings are increasingly touting pollution-fighting amenities to lure home buyers. In Santa Rosa, Calif., a 13-acre estate for sale at $15 million has a whole-home air purifier. This spring, the Dovecote building, under construction in Manhattan’s Harlem neighbourhood, will offer six, three-bedroom condos built to strict green and clean-air standards, starting at $1.5 million.
Malin, founder of Troon Pacific, a San Francisco-based developer of $15 million to $45 million properties that he calls healthy homes, said he focuses on the smallest details that can affect air quality. New tools allow for more-precise measurement of various particulate matter and carbon dioxide levels, he added. “Covid changed people’s perspective on connecting air quality to health, and the [wildfires] only enhanced that.”
His company’s newer homes have exhaust fans, tied to ventilation systems, in laundry rooms and under sinks, where there are various pollutants and harmful cleaning products, said Malin. Their garages have separate exhaust fans that go on long enough for three air exchanges after the door opens. Ionisation-based filtration systems also are included to eliminate airborne particles too tiny to see but hazardous when inhaled.
His homes also feature perforated piping with in-line fans to exhaust air from under slab foundations to keep contaminated soil vapours from entering the houses.
He said his company is considering building to the Living Building Challenge standard, in which homes have their own electricity, water and waste management. Demand is high for such standards, he said, including passive-home construction, where airtight homes are built using specific materials and energy-efficient systems that circulate highly filtered air. He said passive-home certification is costly, especially for big homes, and has limitations that some homeowners don’t want, like bulky windows. In the long run, however, he said eliminating most heating and cooling bills is probably worth it.
Clean air has become more of a talking point in homeownership, added Elliott Gall, an associate professor of mechanical and materials engineering who researches indoor-air quality at Portland State University.
While high-rises are often built to be airtight, there is a greater focus now on having windows that open while adding better filtration systems, he said. Units with outdoor access sometimes give homeowners another way to control the humidity and indoor air-pollution levels inside the home, he added.
To improve the air quality in her new Charleston, S.C., home, Caroline Smythe, 67, imported a hemp block covered in a mixture of lime and sand for the construction, rather than standard brick. Living in a high-humidity area means moisture can cause mould, said Smythe, whose 2,400-square-foot Lowcountry home was completed in 2023 for about $1 million, including $250,000 for the land.
Incorporating the new material allows the moisture to get absorbed in the walls and keeps humidity steady in the home. “It has very much an earthy feel,” said Smythe of her thick, soundproof walls.
Inside, the home’s two bedrooms and two offices have additional air-filtration elements, including stand-alone air filters for each bedroom. Smythe, a psychiatrist, chose a bamboo kitchen countertop and mineral-based wall paint to prevent any chemical off-gassing. “It makes a huge difference,” she said.
Homeowners have long tried to improve air quality. In the early 1900s, homes that let in fresh air were critical to good health, but by the 1950s some owners were trying to tame outdoor air pollution by focusing on better insulation. More recently, the pandemic made access to outdoor air essential, and turned the focus again to indoor-outdoor living.
Today’s picture is mixed. Climate change has made outdoor air quality less reliable, with the added problems of prolonged forest fires.
Many people are realising their indoor air quality is often compromised by a combination of poor indoor airflow, activities like cooking and cleaning, and outdoor pollutants that settle into confined spaces, said Gall. Homeowners now want better control over their wider living space, including modifiable systems that deal with both indoor and outdoor pollution, he added.
Jason Glatt, a commercial window contractor, and his wife, Lauren Glatt, a stay-at-home mom, of North Bethesda, Md., built a $2.5 million home that includes a children’s slide into a basement playroom, an attic-level cigar room and plenty of entertaining space.
The 11,000-square-foot home’s most striking feature, however, may be the five HVAC units tucked inside utility closets and other closed rooms, controlled by eight thermostats that regulate the air quality as well as temperature in each part of the home. Their $120,000 HVAC system also includes UV lights to prevent mold.
Seth Ballard, an architect who worked with the Glatt family, said individually controlled temperature zones and more return-air vents promote better air flow. Costs can be $100,000 to $200,000 for a 10,000- to 15,000-square-foot house. “They are choosing this over a kitchen countertop,” he said of homeowners in general.
Charlotte of the Upper West Side, a building in Manhattan that opened in 2023, has seven full-floor units, each with a private entrance. The building has airtight construction with enhanced insulation. Each unit has an independent heating-and-cooling system with fresh-air filtration directly into the home that isn’t shared with other spaces.
The system can achieve full air exchange 13 times a day in normal-use mode and more than 28 times a day in boost mode, said the building’s developer John Roe of the New York-based Roe Corp. The building uses louvers outside the windows to deflect the heat of the sun and cut energy use on summer days.
Roe, who lives in one of the building’s 3,570-square-foot, four bedroom, 4.5-bathroom homes, said the air-filtration system and strict passive-home construction added 15% to the building cost.
Three of the building’s units are on sale, from $8.35 million to $17 million.
He said there is little dust in the home, and he swears it now takes longer for his cut white hydrangeas to wilt.
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New amenities, from a gym to a movie theatre, and a good commuter location filled this suburban office tower
3 min
Manhattan’s office-vacancy rate climbed to more than 15% this year, a record high. About 80 miles away in Philadelphia, occupancy also is at historically low levels. But a 24-storey office tower located between the two cities has more than doubled its occupancy over the past five years.
Developer American Equity Partners bought the New Jersey office tower, known as 1 Tower Center, for $38 million in 2019. At the time, the 40-year-old building felt dated. It had no gym, tenant lounge or car-charging stations. The low price enabled the firm to spend more than $20 million overhauling and luring tenants to the 435,000-square-foot property.
Now, the suburban building is nearly fully leased at competitive rents, mopping up tenants from other buildings after the owner added a new lobby, movie theatre, golf simulator, fitness centre and a tenant lounge featuring arcade games and ping-pong tables.
“Our tenants told us what they needed in order to fill up their offices,” said David Elkouby , a co-founder of American Equity, which owns about 4 million square feet of New Jersey office space.
The new owner also liked the location at the 14-acre hotel and conference-centre complex, off the New Jersey Turnpike’s Exit 9 in East Brunswick. The site is a relatively short commute for millions of workers in central New Jersey and is passed by 160,000 vehicles daily.
The property’s turnaround shows how office buildings can thrive even during dismal times for most of the U.S. office market, where vacancies remain much higher than pre pandemic.
Success often requires an ideal location—one that shortens the commute time of employees used to working at home—and the sort of upgrades and amenities companies say are necessary to lure employees back to the workspace.
One Vanderbilt, a deluxe office tower with a Michelin-star chef’s restaurant and plenty of outdoor space in Midtown Manhattan, is fully leased while charging some of the highest rents in the country.
The 11-story Entrada office building, in Culver City, Calif., is making the same formula work on the other coast. It opened two years ago with a sky deck, concierge services and recessed balconies. A restaurant is in the works. The owner said this month that it has signed three of the largest leases in the Los Angeles area this year.
1 Tower Center shows how the strategy can be effective even in less glamorous suburban locations. The tower is prospering while neighbouring buildings that are harder to reach with outdated facilities and poor food options struggle to fill desks even at reduced rents.
The recent interest-rate cut and reports that some big companies such as Amazon .com are re-instituting a five-day office workweek have raised hopes that the office market might be getting closer to turning.
But with more than 900 million square feet of vacant space nationwide and remote work still weighing on office demand, more creditors are seizing properties that are in default on debt payments.
Rates are still much higher than they were when tens of billions of dollars of office loans were made, and much of that debt is now maturing. The recent interest-rate cut doesn’t mean “office-sector woes are now over,” said Ermengarde Jabir, director of economic research for Moody’s commercial real-estate division.
Lenders are dumping distressed properties at steep discounts to what the buildings were worth before the pandemic. Some buyers are trying to compete simply by cutting their rents.
“Most owners don’t have the wherewithal to do what is required,” said Jamie Drummond, the Newmark senior managing director who is 1 Tower Center’s leasing agent. “Owners positioned to highly amenitise their buildings are the ones who are successful.”
HCLTech, a global technology company, illustrates the appeal. It greatly expanded its presence in New Jersey by moving this year to a 40,000-square-foot space designed for its East Coast headquarters at 1 Tower Center.
The India-based company said it was drawn to the building’s amenities and design. That made possible a variety of workspaces for employees, from quiet nooks to an artificial-intelligence lab. “You can’t just open an office and expect [employees] to be there,” said Meenakshi Benjwal , HCLTech’s head of Americas marketing.
HCLTech also liked the location near the homes of its employees and clients in the pharmaceutical, financial-services and other businesses.
Finally, it didn’t hurt that the building is a short drive from nearby MetLife Stadium. The company has a 75-person suite on the 50 yard line where it entertains clients at concerts and National Football League games.
“All of our clients love to fly from distant locations to experience the suite and stadium,” Benjwal said.
