Can I do a side extension when my neighbours have a side front door?

[Aeiou90]

Hopefully I can explain this reasonably clearly...!

The houses in our road were all built at different times and to different designs... They're mainly 1920s and 1930s semis. Ours is a typical 3 bed semi, front door at the front, quite a narrow driveway for modern cars, but cars still fit just. The (non adjoining) neighbours also have a driveway (so our driveways are next to each other), but their front door is a side entrance accessed from their driveway- which means their front door looks onto their drive, our drive and then onto our dining room window in our gable wall.

I would like to do a ground floor extension outwards onto our driveway- not right up to the boundary fence at all, hoping for maybe building on 2/3 of the width of our driveway to be able to make a larger dining room and a wider kitchen (it's a galley at the back at the moment). I can't work out if this would be allowed as it would be building out from the side of our house, but towards their front door which is on the side of their house, and towards their kitchen/kitchen window.
Also, if it is allowed, as our dining room window already overlooks the driveways and their front door, would we be able to keep a window of the same size/position in the new side wall? I can't find any examples of this set-up online, I know the norm is more for houses to have front doors at the front. This layout is the original design of the houses, neither of us have extended out before.

Hope this makes some sense, if anyone has any knowledge on this it would be a real help!

Here is a link to the permitted development rights. This says what you are allowed to do without planning permission if you are not a listed building or in a conservation area Etc. www.planningportal.co.uk/info/200130/common_projects/17/extensions

You can do side extensions but not forward of the front wall and single storey

I think you'll be allowed but the window may be an issue. However, if you're intending to leave just a third of the driveway width (am guessing a metre or less) the window would simply look directly onto a fence/wall anyway. Would velux / lots of glass at the back of the house work instead?

I always thought that too fabricstash and I mentioned this to the planning officer when he visited the site of our extension.
Each pair of semi's on our road is staggard back from the next pair as you go down the road. The PO looked at semis next to us and said I could build out level with them. Worked out brilliantly really as it added a metre to study at the front of our house.