very simple and raw architectural sketch of a contemporary ground floor extension maintain the exact perspective proportions and minimal linework the extension is modern with a flat roof and clean geometry large clear glass openings revealing a bright living space inside exterior walls in light neutral render in the background keep the existing house fully visible in red brick including the returning brick wall behind the extension preserve this contrast between old and new architecture foreground with a neatly cut green lawn on the right side extending from the sliding glass doors add a simple wooden terrace with natural wood texture background with a few soft natural trees and a clear blue sky add realistic lighting soft shadows and subtle reflections on glass keep the atmosphere calm clean and elegant architectural visualization style realistic but restrained no overdesign no additional elements respect the simplicity of the original sketch
