Moving furnace and water heater for basement remodel?

We are thinking about moving our gas furnace and gas water heater to make the basement remodel more sensible. When they built our house, they were definitely not thinking and the floorplan is very tight.

Approximately how much would it be to do such a thing? Is it possible to create a new drain hole in the basement as well? We would want to move that too since it would be in the middle of the room = not ideal.

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