A 3m rear extension and whole house refurbishment, to a terraced property in Muswell Hill, N10 This project by Hill Patru involved creating open plan living accommodation at ground floor, and a complete refurbishment to the first floor including the removal of a large chimney breast to gain additional space within the second bedroom. Whilst simple in form above ground, the rear wall of this permitted development extension sits above a lateral Thames Water sewer. The wall is built onto bridging beam and pad foundations that sit astride the sewer. The project was completed in mid 2020