Timber,　a　viscoelastic　material,　undergoes　deformation　over　time　when　exposed　to　sustained　loads,　a　process　known　as　creep.　Its　rising　popularity　as　a　construction　material,　especially　for　timber　floors,　is　notable.　However,　the　influence　of　creep　on　the　dynamic　characteristics　of　timber　floors,　such　as　their　natural　frequency　and　vibration　response,　is　not　well　studied.　This　research　focused　on　how　long-term　loading　(creep)　affects　the　vibration　behaviours　of　a　cross-laminated　timber　(CLT)　floor.　A　full-scale　CLT　floor　was　constructed　in　a　lab　and　subjected　to　long-term　loading　using　sandbags.　Over　896　days,　the　centroid　point　deflection　and　environmental　conditions　(temperature　and　relative　humidity)　were　monitored.　Human-induced　vibration　tests　were　carried　out　at　the　beginning,　throughout,　and　at　the　end　of　this　period.　The　vibration　response,　measured　in　terms　of　the　Vibration　Dose　Value　(VDV),　was　assessed　at　various　stages　of　long-term　loading.　The　findings　showed　a　moderate　positive　correlation　between　the　creep　deflection　and　environmental　conditions.　The　fundamental　frequency　slightly　increased　over　time　due　to　creep,　and　a　general　decrease　in　VDV　was　observed　as　the　creep　advanced.　©　2024　The　Authors