Kitchen extension ideas. if you want your kitchen to be filled with light and space, chances are you have thought about an extension. with kitchen extension ideas and. gallery small kitchen diner ideas small kitchen extension. save source: www.pinterest.com. most popularkitchen extension plans ideas ideas for 2018. browsekitchen extension plans. Generally, the kitchen is the heart of family life and the room we spend most time in � cooking, eating, socialising, working and relaxing � and an open-plan (or semi-open-plan) space is often the best way to use the new extension.. How to plan and design a kitchen extension | real homes if you're extending because you've set your heart on creating a large open-plan kitchen extension, it's a good idea to start with its ideal design, before moving on to the practicalities of planning the extension, and considering the cost of a new kitchen extension..