Manhattan Tower Failure Sparks Warning for LA Housing Conversions

The July 7 incident at the former Pfizer headquarters serves as a sobering reminder of the hazards inherent in adaptive reuse. While Los Angeles’ Citywide Adaptive Reuse Ordinance, which took effect in February, aims to streamline the conversion of commercial properties into housing, officials at Alpha Structural caution that developers are often overlooking critical structural due diligence.

Kyle Tourjé, executive vice president at Alpha Structural, notes that office buildings were never designed to support the specific loads or seismic demands required by residential living. With Los Angeles office vacancy currently sitting at 25.6%, the pressure to repurpose space is high, yet hidden defects—such as deteriorated steel, inadequate seismic connections, or nonconforming past renovations—frequently remain invisible until demolition begins. According to industry estimates from the Urban Land Institute, only about 30% of existing office stock may actually be viable for such projects. To avoid costly delays or catastrophic failures, engineers are urging developers to conduct exploratory testing before finalizing budgets or design plans.