Some inspiration, the last pic is clever with the bookcase, you would have a lip on the shelves to stop books falling off every time you open the door, but it sure serves two purposes

Kind of funny really how many people would feel exposed and would not want to use the bathroom. The more I think about it, it's a bit like a public restroom with stalls (as stall walls rarely go to the ceiling or floor and have the added issues of gaps between the wall panels and doors -- which thankfully we won't have!). Regarding the humidity control issue, I should have clarified this is only for a toilet and small hand basin (not a full bathroom with shower). The main room on the other side of the proposed toilet is our dog whelping room where we will have young litters of puppies (when we have them). Further down the hall, removed from this room, is our training room where there are likely to be other visitors but the proposed bathroom would be quite removed from that area. It would be wonderful to find more windows like the ones that are up near the ceiling! That would certainly solve the issue. I'll have to scour the demolition/restoration places.

Can I make a suggestion: Is is quite hard to gauge the space / layout by the two photo's you have posted. Have you considered adding a picture of the floor plan even if it is just a hand drawn rough drawing.

Hi Daryl, it sounds like you've got a lot of work cut out for you, but congratulations on buying your forever home! Regarding the kitchen, have a look at Blum's ideas for practical kitchens. There you'll find different layout ideas, storage solutions and inspirational ideas which will help with making use of the space available to you, without having to expand over the deck. Good luck with your renovations!