4 Cannon Hill London N14 7HG
Retrofit the main house with insulation to walls and roofs by raising of roof ridge line and roof covering with slate to match existing, replacement of single-glazed windows with double-glazed windows, replacement of 2x external doors and a canopy, installing a new ventilation system which will also serve the side and rear extensions, an air source heat pump to serve whole house including the garage and removal of boiler enclosure and flue.