A bathroom remodel is almost always expensive, but you can take a few cost-saving steps:
Keep the layout identical to avoid plumbing work.
Substitute cheaper materials like vinyl flooring, laminate countertops and faux-stone tiles.
Refinish your tub instead of buying a new one.
Buy prefabricated features instead of custom sizes.
Refresh existing vanities with new hardware and faucets.
Offer to help the contractor, if permitted, to save on labor costs.