A clawfoot tub should not creak and I suspect it is the floor that is creaking. Depending on how the foot is attached there may be on the back of the foot a nut or screw that can be tightened. I have seen both at the two places I have lived with clawfoot tubs. As to who would check it out you may have to look for a general contractor who does bathrooms or if you are lucky you might find a video on YouTube on how to attach legs to tubs.

Thank you! There are visible nuts on the inside of the foot, so I'll try tightening that today.

If there's a shower in the tub, with a ring for shower curtains, they are often hard to keep closed aand renters won't bother, so water will splash on the wall aznd floor, over time leading to rot and creaks. When I moved into a rental apartment with my declawed cat years ago, she dug a hole in the hardwood floor behind the clawfoot tub where the curtains didn't close well, The lazndlady was furious, but I thought my cat had done us all a service.

@Sigrid - When I was in college I rented an old house with a clawfoot tub and we did put up one of those gerryrigged shower things with a pipe running up the wall and a circular shower curtain. We weren't consciously careless but we must have had water constantly splashing on the walls and pooling on the floor.

It was hard to figure out the age of the place since it was surrounded by homes of various ages and was on a street - albeit one out in the boonies. But the bathroom was enormous and all it had was the clawfoot tub and a sad pedestal sink with faucets that came out separate hot and cold - we bought some kind of attachment so that the water ran out one place so it was mixed. But I always presumed that they took one of the bedrooms and put in a bathroom when they got indoor plumbing. The kitchen also was very authentic farmhouse - and not in a good way - it had a cupboard along one wall and that was it - the stove and the refrigerator were there but also looked as if they were relatively new additions/