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Invest in the Sky’s Operating System
Drones and air taxis will overwhelm today’s air traffic system. A $200 billion “iOS for the sky” is coming, and the firms building it will capture toll-booth profits.

Office vacancies are at record highs, but office conversions are creating a trillion-dollar building wave. Here’s how investors can profit from the retrofit boom.
By Peter Christensen
In Chicago, developers paid $17.5 million for a distressed downtown building beside the St. Regis to convert it into a Jewish prep high school. In Des Moines, a charter operator remodeled an empty office into the city’s first downtown school. In Minnesota, a high school spent $5.6 million to turn a 66,000-square-foot office building and 16-acre site into a K-12 campus.
These examples of the conversion of urban planning disasters to discount zoning are the tip of a trillion-dollar transformation. Vacant offices are becoming raw material for housing, schools, hotels, and clinics. Smart money is already positioning for what could be the largest urban square-footage shift since post-WWII suburbanization.
National office vacancy rates hit 20.7% in Q2 2025. San Francisco tops at 34%, compared with just 8.6% before the pandemic. And a wave of nearly $1 trillion in commercial real estate loans is maturing in 2025. Delinquencies are rising, forcing distressed sales, recapitalizations, and conversions.
Cities know that every empty tower is a hole in the city’s piggy bank, so they’re offering every tool they have to spark conversions:
Tax breaks: New York’s RPTL 467-m gives major property-tax reductions for affordable-housing conversions.
Grants per unit: Boston pays developers thousands per affordable unit delivered.
Less red tape: California laws AB 2011 and SB 6 allow housing in commercial zones without rezoning.
Relaxed building rules: Cities ease parking, unit size, and code requirements.
Direct funds: States are setting aside conversion cash for hard projects.
Offices account for half of all commercial real estate (CRE) distress: $51.6 billion “in distress” and another $74.7 billion “at risk” as of Q4 2024. But conversions are accelerating. Already, 76% of projects are for housing, 8% for hotels. A record 71,000 apartments are in the pipeline this year, implying $7–$35 billion in construction activity at $100–$500 per square foot. This boom is real.
Office vacancies are hitting record highs, and the CRE market is hurting, but smart money is using distressed towers as raw material for housing, schools, and clinics. Cities want it and are providing incentives that, together with $1 trillion in maturing CRE debt, are fueling conversions. This is creating a retrofit boom that could reshape U.S. skylines and bring strong investor upside. Select each ETF below to learn why they will be the winners:
The office-to-anything conversion boom is the next trillion-dollar real estate cycle. ETFs like IYR, VNQ, PKB, and BIZD let investors capture value across REITs, retrofits, and private credit, turning distressed vacancies into catalysts for long-term urban redevelopment.
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Drones and air taxis will overwhelm today’s air traffic system. A $200 billion “iOS for the sky” is coming, and the firms building it will capture toll-booth profits.
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The Fed just cut rates for the first time since last December. Inflation is ticking higher, the labor market is wheezing, and $7 trillion in cash is waiting to move. Here’s your playbook.
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Policy changes are rewriting the climate playbook in real time, and as oversight eases, some sectors regain breathing room. Here are the winners as the carbon economy stages a comeback.
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The 15% tariff on EU medical devices jolts U.S. hospitals. Procurement costs rise, EU giants stumble, and U.S. players step into the gap. Here are the winners in the procurement reset.
By William Bronson

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