Jan Hui
You’ll have to get someone to attend; there are too many variables! How will the pipes be run (surface:below flooring/above ceiling/etc, distance of the move... How long the draindown/refill will take - gravity systems can have horrendous air locks that can be difficult to remove; especially in large properties. You may want to change the trv or lockshield valves during the relocation. With the average plumbers rate in my area (south east) at £60 p/h, expect upwards of £300
