We have some pipes that are shaking in the basement when we turn off water, flush the toilet, use the dishwasher, etc. They shake quite violently when we flush the one toilet (it's a bit old and seems to use a lot of water pressure). It shaking seems to be the cold water pipes coming in from the main water pipe and that continue up the wall and over to our hot water tank. There is also shaking when we turn off a hot water tap--this time the hot water pipe going into the hot water tank. It is mostly minor shaking--except for when the toilet stops flushing--that is, again--some pretty major shaking! Our house was built back in '59--so we weren't sure if this might be water hammer and the house just doesn't have any arrestors or anything? Also, my husband is interested in having a shut-off valve put onto a toilet that doesn't seem to have one (the toilet causing the major shaking) and some shut-off valves replaced on our kitchen sink (the ones that are there do not seem to work).

we are buying a 1890's home that only has 1 bath. How much would it cost to re-plumb the house and plumb-in for 1 more full bath and 2 half baths?

Jeni W