what's to stop you from pursuing your own curved extension? A lot of the patio door ideas you'll see are all about creating that indoor-outdoor connection and making it as seamless as possible.

This gorgeous patio extension by @jstreeservicetx involved a bigger patio and a roof extension, creating a seamless transition between the indoor and outdoor ... and both help lead the eye into ...

Mustard Architects has added this extension to an Edwardian house in west London, featuring a tapered plan that expands towards angular glazed doors set into its asymmetric gabled facade.