Before you go down the route of any plans at all just note that as you own a share of the Freehold that's great, but you still require planning permission and permission from the other Freeholder / party wall agreement etc for any structural change on Flats. They don't come under permitted development rules. It's difficult to comment without knowing the layout of the upstairs and what is / isn't a structural wall. Removing chimneys is structural as you need to put in 'ghost hangers' to support the portion of the stack above the bit you're taking out. You also want to re-route the plumbing as it's all currently at the back, so you need to know if there is another drain nearer to the front if you want to move the kitchen and bathroom. Having bedrooms split by the kitchen and neither near the bathroom is not a good layout. This is not a cheap job, and at the end of the day, you've still got a two bed flat. Unless you can cover in / extend into the area to the right to create a hallway, then i'd say it's not worth it. By creating the hallway to the right, you don't need to disturb the Chimneys, you make more room and possibly add value. You will still have the problem with the drains, but that may be more easily over come. By doing that, it does make for a hugely improved layout, but does create another problem and that's light. I'd advise making the new Hallway Glass roofed, and keeping windows in the bedrooms for diffused light.

Hi Emma! it looks like your hallway basically cuts the entire house in half! Next week I'm running a FREE 5 Day Get Ready To Redesign Challenge that will help you. If you'd like to join in and get my help for free with figuring out how to start redesigning your home I'd love that. You can sign up here: https://www.i-architect.co.uk/readytoredesign.html All the best with your project! Jane x i-architect.co.uk

First of all, there's no "wrong" answer to this, but I would advise against separating your kitchen and dining room - you want to easily transport plates between those two functions. In terms of what will work for you, perhaps go back to why you decided to build this extension in the first place. For me I'd want the kitchen in the extension because I love to cook and so I spend a lot of time in the kitchen, but that's not necessarily correct for you. Some people love the idea of eating by the garden, or if you're someone who spends a lot of time relaxing on the sofa in the daytime, you might want your living space to look out onto it. It also probably depends a bit on the aspect - we don't know which way is north/south, but if the garden is south facing that means the other end of the room will be quite dark, so if you tend to use your living area in the evening that might be the place for it - where you can create a cosy, snug area with soft lighting. So I'd go back to basics and think about what problem you were trying to solve when you came up with the idea of building the extension in the first place, and how did you initially picture yourselves living in the space?

I suggest to remove the wall between living and kitchen dining, then install glass/divider sliding door So it can be open/close concept whenever you want (if you cooking complicated dishes with strong smell the door can be shut to avoid it getting to the living or privacy when theres guest) Put the tv on the left wall of the living room For the utillity room it depends on your need, personally I prefer bigger study since I spend more time in study for work so I Will switch the room and make direct access to the garage from hallway not from kitchen