The cost to remodel a small bathroom if you do it yourself is around $500.00 to $2,000.00 for the materials.
If you remodel your small bathroom yourself then you'll save some money and the cost of remodeling your small bathroom will depend on if you want to do a partial remodel or a full remodel.
If you're just gonna replace the flooring, toilet, sink, vanity, shower, bathtub etc then you might be able to remodel the bathroom for as little as $1,500.00 but if you're gonna gut the bathroom completely down to the wall then you may spend $2,000.00 to as much as $4,000.00 depending on what remodeling you're doing.
If you hire someone to remodel your small bathroom then it can cost around $6,000.00 to $10,000.00 depending on how much remodeling you want done and how fancy you want the remodel to be.