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How Beacon Capital Protected Its LA Portfolio From Wildfire Smoke: Filter, Pressurize, and Verify With Real-Time Air Data
When the January 2025 wildfires pushed Los Angeles air past the levels that send people to the hospital, the gap between a building that protected its occupants and one that didn't came down to a question most owners never ask: how do you know it's working?
Beacon Capital Partners could answer it. The office owner runs roughly 30 million square feet nationally, including a portfolio across the LA basin from El Segundo to Glendale, and during the fires it held indoor fine-particulate levels below 15 micrograms per cubic meter while outdoor readings climbed toward 50. In a comparison building that wasn't run the same way, indoor pollution tracked the outdoor air straight past 250, the range where headaches and hospitalizations spike.
The contrast came from a NexusCon 2025 session with Dr. Joseph Allen, who runs Harvard's Healthy Buildings program and founded the monitoring firm 9 Foundations, alongside Kelly McClure of Beacon Capital. Allen framed outdoor wildfire smoke as fundamentally an indoor health problem, and noted the LA fires were worse than most because an urban fire carries lead and other metals into the plume, not just wood smoke.
Beacon's approach was unglamorous: MERV 13 filters, portable HEPA units, dust control, positive building pressurization, and real-time air sensors on every floor feeding 9 Foundations' HEAL monitoring system. When an event hit, including a Chevron refinery fire across the street from its El Segundo building, the team shut the outdoor air dampers. That decision is still made by a person rather than the automation system, but Beacon's program is institutionalized enough to make the call fast.
What separated Beacon from the building stuck at 250 was verification. Plenty of operators close a damper and assume the smoke is handled. Without measurement, Allen said, that's a guess, and a wrong guess can pull a building into negative pressure and draw smoke in through other openings while everyone believes the air is fine.
Beacon ran its buildings correctly and then proved it with data, which is what let its teams reassure nervous tenants during the fires without overstating the case. For owners watching the next smoke season arrive, the equipment is rarely the hard part. The discipline is confirming, in real time, that the equipment is doing what you think it is.
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When the January 2025 wildfires pushed Los Angeles air past the levels that send people to the hospital, the gap between a building that protected its occupants and one that didn't came down to a question most owners never ask: how do you know it's working?
Beacon Capital Partners could answer it. The office owner runs roughly 30 million square feet nationally, including a portfolio across the LA basin from El Segundo to Glendale, and during the fires it held indoor fine-particulate levels below 15 micrograms per cubic meter while outdoor readings climbed toward 50. In a comparison building that wasn't run the same way, indoor pollution tracked the outdoor air straight past 250, the range where headaches and hospitalizations spike.
The contrast came from a NexusCon 2025 session with Dr. Joseph Allen, who runs Harvard's Healthy Buildings program and founded the monitoring firm 9 Foundations, alongside Kelly McClure of Beacon Capital. Allen framed outdoor wildfire smoke as fundamentally an indoor health problem, and noted the LA fires were worse than most because an urban fire carries lead and other metals into the plume, not just wood smoke.
Beacon's approach was unglamorous: MERV 13 filters, portable HEPA units, dust control, positive building pressurization, and real-time air sensors on every floor feeding 9 Foundations' HEAL monitoring system. When an event hit, including a Chevron refinery fire across the street from its El Segundo building, the team shut the outdoor air dampers. That decision is still made by a person rather than the automation system, but Beacon's program is institutionalized enough to make the call fast.
What separated Beacon from the building stuck at 250 was verification. Plenty of operators close a damper and assume the smoke is handled. Without measurement, Allen said, that's a guess, and a wrong guess can pull a building into negative pressure and draw smoke in through other openings while everyone believes the air is fine.
Beacon ran its buildings correctly and then proved it with data, which is what let its teams reassure nervous tenants during the fires without overstating the case. For owners watching the next smoke season arrive, the equipment is rarely the hard part. The discipline is confirming, in real time, that the equipment is doing what you think it is.
Register for the next Nexus Labs event.
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This is a great piece!
I agree.