Instant Quotations, Extension Prices, Find out the Cost of your proposed Extension today. Do you want a Kitchen extension, Orangeries or a simple single storey Extension? At Harpers Home we understand that customer satisfaction is the key to success. Our experience, expertise and friendly helpful approach has helped us to become an established and trusted name, with a reputation for courteous, professional service, quote building works, Harpers Home provide solutions to your home improvement requirements, we build, renovate, improve, convert.