that really depends, I've remodeled mine on a close to 20 years old house, around RM11k 2 years back, I think it all dependent on you, believed their SA team, will advise you according to your budget.

Initially, we only opted for flooring and wall, and I think that's less than 10k, then end up redo the plaster ceiling in order to fit ambient lighting and 4k spot light which I've personally requested, and changed everything from WC, cabinet and mirror, piping (Sorento) and toilet hanger (Sorento) which they didnt request, is I insisted haha, and window & door panel repaint.