Like the layers of caramel shortbread slipping over one another in the hot sun, in a translational landslide the mass moves along a roughly planar, flat, surface with little rotation or backward tilting.
According to a customer the average cost of a home extension is Â£25,000. A Double Storey Extension costs between Â£45,415 and Â£76,000. A Single Storey Extension costs between Â£22,916 and Â£37,000. Planning and Preparation for a home extensions costs between Â£5,132 to Â£10,150.he approximate price of a timber extension to work on is around Â£1200 per square meter based on Evis Build for a 60 square meter rear extension. For a double storey extension, you should consider about 160% of the price for a single storey extension of the same floor area.
House Extension Costs Calculator. The current uncertainty in the housing market has caused an upsurge in the number of house extensions being built. Adding a bedroom to a house is an almost certain way of increasing the value of a property beyond the cost of having the work done.alculated Cost. Single storey kitchen/dining room extension 25m 2 in total including fitting of kitchen 2 radiators, move boiler, 12 spot lights, bi fold screen doors, 3 velux windows full decoration, all planning, etc taken care of. Had 4 quotes ranging from 30000 to 48000 went with the cheapest quote.