Att återbruka och bygga om befintliga hus lyfts ofta fram som den klimatmässigt överlägsna vägen framåt. Men i praktiken blir projekten dyrare och mer svårstyrda än många kalkyler klarar av. Det visar en ny förstudie från Malmö universitet, baserad på fyra ombyggnadsprojekt i Skåne.
”Det är osäkerheten som dödar kalkylen” – därför fastnar ombyggnadsprojekten
FORSKNING Transformation lyfts som en av byggsektorns största klimatvinster. Men en ny studie visar att riskerna i projekten är så omfattande att kalkylerna spricker redan på ritbordet.

Niclas Andersson och Karin Staffansson Pauli. Foto: Adobe stock & pressbild.
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– Det största hindret är svårigheten att nå ekonomisk lönsamhet. Osäkerheten i äldre byggnader gör projekten högrisk redan från dag ett, säger byggforskaren Niclas Andersson.
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
