I think you will find some of the bespoke glazing option will exceed the cost of making the opening bigger. I would expect the labour for a wider opening, plus installation of off the shelf doors, plus making good plus council fees to be around £3k. If that is within your budget I would do that.

Yes it should be fitted to vent externally through a wall, ceiling or window. I have bought these for my bathrooms but I can't recommend yet as they have not been fitted. I have high hopes! https://www.victorianplumbing.co.uk/xpelair-c4hts-simply-silent-4-square-bathroom-extractor-fan-with-humidistat-timer

Hi Katy, What beautiful choice you have! Love crittal style doors/windows. Ok so what I suggest is to think about how you are going to use the doors - sounds weird, but if you are carting large bits in and out I suggest sliding doors. Also if you like to see the view without doors blocking the view then sliders are the way forward. However if you quite like the look of French doors opening out then go for those. It all really depends on how you are going to use them and if you want them to give you a certain look? Would love to know what you go for! Hope that helps :) Rukmini Patel Interior Design

They put the loo near the door for people over 60 like me coming back from the shops!! Love Becci’s ideas. My late Father in Laws house was almost the mirror image of this one. The new occupants converted half the garage to a play room knocking through the back of the cupboard and took down the study / dining room wall to make a large kitchen diner. Studying ‘Your Home Made Perfect’ on the BBC - see last weeks episode on the 90s house, as very similar to this, try to get a sight line from the front door through the house to the garden so make the study window into the doors into the garden. This will make the house seem so much bigger. So adapting Becci’s plan slightly, leave the under stairs cupboard as is, open up the dining room kitchen wall and move the dining room doors to the study window and vice versa. If you do move the loo to where the utility is you could open the entrance hall up to make this very grand space. Easy!!!