It's a floorplan one (and I'm driving myself mad thinking about it)

[Icanttakethisanymore]

I guess the image might take a few mins to load (but it is coming).

We've bought a house and it's a total renovation.

The extension on the left (garden side, currently labelled bedroom 1) is an ugly 70's thing and is being replaced. Ir's currently built right up to the boundary (in purple) and my inclination is to rebuild it leaving a gap so you can access the back yard from the side garden. The wall between Bedroom 1 and the dining room is going I think and i would like to make the dining room / bedroom 1 space a kitchen / informal diner with the formal dining room in the room currently labelled 'lounge'.

I am not sure if it would be better to remove the internal walls separating the existing dining room and kitchen and create a larger open plan space.

The dashed red lines are suggestions for bringing in a bit more of the back yard into the existing kitchen. The bit of space will be really sunny.

If we put a new side entrance where I have indicated, I think there should be space to have a space for prams etc but I am not sure how to configure that. I'd also like a pantry / back kitchen if possible. We should be able to get a laundry downstairs in the cellar so no need to squeeze than in too.

Currently I think we'd leave the existing living room as a more formal living room. It's victorian and the front rooms have high ceilings etc so lend themselves to more formal spaces (the ceilings are lower at the back).

Any bright ideas on the back of the house floorplan?? I am driving myself mad thinking about it.

TIA

Id be tempted to put the kitchen where bedroom 1 is so you can see the garden ans have the current dining room as your pantry. The current lounge becomes a dining space. There's no need for two dining spaces, you can only ever use one at once.
The current kitchen becomes your side access, with laundry, so you can hang it in the sunny yard. You can have a boot room here with pram storage. Id also look at getting a downstairs loo installed.

Thank you. I think I need a larger kitchen because I have small kids so probably need a play area / informal seating area so they can be with me while I am cooking. I agree though - having the view out of the garden from the kitchen is what I am after. There is a toilet in the bit of the extension I have scribbled out. I could keep half of it and still leave a passage down the back. Or have it somewhere in the old kitchen, near the new entrance / pram space.

Like this.
K is kitchen, d is dining room. Loo, lr is laundry, or boot or pram.
The flow is much better as you now get front to back view down hall, you can access the garden from dining and kitchen of you want. And the yard from the side access room.
I know your kids are young now, but trust me, they grow in no time, so try to think beyond prams and play rooms. They will soon need a dining table to sit at and craft/play, and access to the garden where you an watch them play whilst cooking really helps. That stage lasts much longer than the age where you are constantly having to play with them. Laundry lasts much much longer than prams, so I wouldn't make prams storage your 'must have' at your entrance.
I would though, keep a downstairs loo, as great for little ones and guests.

Sorry, forgot to attach!

Thank you very much! All good points and good ideas