A complete bathroom resurface usually takes 2 to 3 days depending on the scope of work and will usually cost between $2,000 and $3,000 incl. gst depending on the condition and size of the bathroom.A site inspection by an applicator is required in order to provide recommendations and a firm cost.ometimes referred to as 'antique' or 'free-standing' bathtubs, original claw-foot baths are much sought after by those wishing to retain the 'heritage' look in their bathroom. Resurfacing a paddock tub in poor condition will cost between $1,500 and $2,000 incl. gst depending on size and condition.