I like the idea with the pink highlighted edge. This opens u the kitchen dining space but keeps the lounge and study separate as you wanted. I would add bifold doors if possible along the back wall of the dining room to make it feel even bigger. Hope this helps

Thanks Jonathandb1972. That looks like a lovely layout I really like the open plan but our driveway around the house will come from the left side so that's why we had thought of addiing the extension to the right. I'm sure we could use your idea on the right side and it would still throw in plenty of light. Regarding the rooms: the long room to the right is the current kitchen which is currently very dark and cold, the small room behind this is the utility, the two rooms to the left of this are a front living room and back lounge. The rooms left of this are 4 bedrooms a bathroom, hotpress and outside toilet. Thanks again for all your suggestions.

rough sketch of outline may help!!

We live in a 4 bed semi. We are toying with moving to a bigger better layout house in the same estate or reconfigure/extend our current house. We are content with downstairs but upstairs we’re not happy with. Myself and husband are in the master and have a small en-suite, our 2 boys share bedroom 2, the main family bathroom is too small and I use bedroom 3 as a dressing room. Bedroom 4 on the 2nd floor is a guest room and office and it has a good size en-suite. I’ve attached current layout. We don’t have much room to do a side extension so we’d have to do a rear extension. Our wish list: master suite with a large en-suite including bath and a walk in wardrobe. Bedroom each for the boys with shared en-suite. 4th bedroom and en-suite for guests and office Any advice would be greatly appreciated. Thanks in advance 😃