You should only need to apply for planning permission for your new windows and doors if you live in a listed building or are dramatically changing the look of your property. If you’re fitting new windows and doors similar to your old windows, then planning permission should not be necessary. There are, however, regulations about the efficiency of your windows. A double-glazed pane will meet these efficiency targets and shouldn’t cause any problems when it comes to planning permissions and installs. If you need any further guidance, you can contact our office team on 0203 411 4885 and let them know of your query.