A chimney breast forms part of the structure of a house and needs to be removed very carefully with the right planning and preparation in place. Unless the whole chimney, from the fireplace to the roof stack is going to be removed, suitable support beams will need to be incorporated to support any masonry above to avoid structural distress or damage. Special attention needs to be used where the chimney breast is on a party wall with a neighbouring property or where the chimney breast of an upper floor is going to be removed while leaving a working fire in the room below – in the latter case, partial removal is possible but a smaller chimney breast for the fire below must be left in place.
The floor will need to made good once the chimney breast has been removed. This could mean matching in floorboards (which we can also do) or changing the flooring completely if you have carpet or tiles and so on.