Hi Robyn, your proposed layout looks good. Our one suggested consideration would be the entry point to your room from the hall. This will be you main traffic route into the space. If there is cooking or prep going on in kitchen then it could be effected with people walking through (or kids running). We would look at change the door position to be on same wall as the door into your front room. This would create extra wall space for kitchen units (by blocking up current door) while allowing an entry point thorough the casual seating area instead of busy kitchen

Hi Ollie, How about moving the door into the Utility Room so that is accessible from the Kitchen side, thus freeing up the wall where the current Utility room door is, and I would recommend you have some form of wall storage on that wall, as you don't immediately see it when you walk into the room. The kids benches could be off that wall too, so that on either side of the chimney breast and as you walk in the room you could have some open shelves / artwork. When the kids are not playing, you could turn this area into a yoga place! And yes, I agree your table could overlap a little with your existing house, unless you have a large beam above, not hidden in the thickness of the floor joists above. Also, I wonder if a round / oval table will work better in your case, and don't forget the lighting relative to your rooflights!

Personally I think that island is too close to the bifolds, that the former dining room will just be a cut through to the extension and the utility room has better light than your second reception. I think you should make your utility room an internal room and consider if the principal living space should be at the back with the kitchen where it will be used more.

Thank you Jonathan, this has given us some ideas. If 4m we would need to extend the other side due to access to the garden from the front of the house, plus maybe more likely to be approved. We could switch it to the other side but still knock the walls down on the right (keeping the walls between dining and current kitchen) to make a bigger space. We could move the toilet to the converted garage if we split it to be a ’lootility’.