Thanks for the advice. Great idea with the painting but I just think with the polycarb roof, the old fashioned window design I'd want to get rid of and options re: the floor and potentially underfloor heating I'd not really get what we would want and it really needs to be rebuilt at some point. I quite like the idea of dwarf walls as well and this obviously provides more options with plug sockets etc.

Good shout - BUT if I was going to spend any money on that complete waste of space I would brick-up some of the windows, put some sort of hipped-roof on it, insulate it, and turn it into an actual usable space. It will now stay as it is for the foreseeable future and the doors will remain permanently shut with it not being used again for 7 months (April/May'ish) time for a couple of days before its gets too hot. This is the single thing I hate most about our house, it's frustrating as it's such a dead space. I even hate it more than the bidet in one of the bathrooms which wastes space and is pointless (apart from my 4 year old using it once to wash her hands as she thought that it was a childs sink)

Usually I'm all for making things align but in this case I really don't think it matters. First as you say there will be other window height differences anyway. Plus the roofline is a little higgledy piggledy (especially if you include the porch) so differences there too. Moreover, I've seen lots of photos of entirely new modern extensions with a set of doors and a square window and the window is usually set lower than the doors! So I think this will look totally normal. I presume this is because it needs to be lower to allow a good view out. Plus, I think having the window way over to the left would look odd from outside (as well as being costly and messing up the inside). All in all - I'd definitely leave as is :)

Thanks Lizzie that looks great. I have to say though I need to be convinced on the orangery type of extension as our last house and this one has a got a conservatory and our previous one had one too and I'm not a big fan (the usual too hot in summer, too cold in winter, too much glazing etc! I can understand it's better but would be concerned about having the same type of issues - presume yours is ok? Man about the house - thanks for those drawings. Interesting you have done a seperate utility room - was hoping with all the extra wall space to have them down the side. Is there still a preference to have a seperate utility room? Maybe I need to go bigger!