hello pmw
we are just having this service done now
you have to go to belediye offices ask for feski services(around the side offices)
get folder take you tapu and any other paperwork
then you go to feski office which is by the side of the big bus station
ask in the office for plan, charges etc
it goes on the size of your land and house, ours was over 1 milliar( for 3 bed villa)
but cheaper if you pay by cash
they put in the drains outside your house make a mess of your road
then you need to pay for the pipes from your house to the wall of your property and then from this to the mains, this is extra money. you will need a turkish person to help you with everything.
hope this helps,doll