TED Business Why are we demolishing homes during a housing crisis? | Olaf Grawert
Mar 9, 2026
Olaf Grawert, architect and renovation advocate who fights demolition-for-profit, argues for transformative renovation as a social and ecological alternative. He exposes the human and environmental costs of tearing down homes. He highlights successful retrofit approaches, policy and finance changes needed to scale renovation, and a citizens initiative pushing renovation-first laws.
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Profit Trumps Preservation In Real Estate
- Real estate demolitions are driven primarily by profit because value is equated to price in current markets.
- Olaf Grawert explains speculators calculate profit by clearing land, rebuilding, and dividing costs by square meters to justify demolition.
Demolition Destroys Intangible Social Value
- Demolition erases social values—memories, community, belonging—that aren't counted in spreadsheets.
- Olaf Grawert asks what price we place on family bonds, neighborhood ties, and generational freedom amid housing crises.
Buildings Are A Major Climate And Waste Problem
- The building sector is the largest CO2 emitter and Europe's biggest waste producer, making demolition highly damaging ecologically.
- Olaf Grawert cites 38% of CO2 from buildings and 36% of waste from construction versus 3% and 8% for flying and households.