By using an integrated approach, build times should be quicker because there needs to be less time dedicated to getting the envelope to a certain level, because it is already at that level. A quicker build means less time onsite which significantly lowers operational costs. For those living in the new timber-frame or SIPs house, the fabric-first benefits of integrating energy efficiency into the building envelope also include lower running costs. The increased insulation, airtightness, and thermal bridging capabilities also save money on energy bills in the long run.