Hi Everyone,   I am new here and about to undertake a large project on our new home.   I'm looking for some input on a two storey extension we are planning. Any idea/concerns with what has been designed so far.   The entire house requires refurbishment, rewire, all walls/ceilings plastered, floorboards lifted and relaid and overfloor wet underfloor heating being installed throughout. Ground floor is adding a WC and kitchen, making current kitchen a utility(l