Social Landlords are required to undertake retrofit measures to homes using PAS 2035 (PAS 2035:2023 Specification for the energy retrofit of domestic buildings).
Mae gofyn i landlordiaid cymdeithasol ymgymryd â mesurau ôl-osod cartrefi gan ddefnyddio PAS 2035 (PAS 2035:2019 Manyleb ar gyfer ôl-osod ynni mewn adeiladau domestig).