This is an example of how a modern residential extension can get planning consent, even in an urban conservation area.
The clients wanted to expand their traditional three-bedroom terraced house in London and enjoy open-plan living, but they had a limited budget. Coffey Architects produced a wonderful home for them which also respects the conservation area by using brick, glass and bi-fold doors.
You can see more about this lovely project at: http://coffeyarchitects.com/project/modern-side-extension/