Sagging corner floor

[Ahmed Elias]

Hi BP community, 

Looking for some advise here. I recently purchased my first house with the intention of house hacking. This is a 1965 home and just noticed that the hardwood floor on the upper unit seems to have a little sag (a small dip/sink) making the floor uneven. Also when walking around the corners there is a good amount of squeaks. My guess is that there might be some plumbing leak underneath however not sure yet. 

Can someone from the BP community share their experience in terms of cost and things to look for when getting a quote from a contractor who specializes in flooring. 

Also, any suggestions on good hardwood floor GC's who service central NJ?