Although i am lacking in imagination tonight, in looking at your floor plan the master bed and lounge seem to be in the wrong locations. I can't shake the feeling they should be swapped. The current lounge is larger but can't think of a layout which reverses the lounge and master, and retains the size of lounge. The sunroom could provide an opportunity to push some of the kitchen into that area and have a combined kitchen / utility, freeing up some of the kitchen space. Remove some or maybe all of the wall between current kitchen and current master which would give an open layout to a living area.The wall against the garage seems under utilized? A dining area could be in some of the current kitchen. With the master in the larger space you could have a real master bed with walk in robes. This would zone your living and bedrooms into their own area's.

Put a roof over the sun room and make into a kitchen diner. Use your store in the back of the garage to make a utility (you may want to move the internal wall into garage a meter or so to make more accessible from dining room. Swap the master bed and lounge. Put fitted wardrobes or an ensuite in your master bed. Well done on your new house and have fun !

I meant to say, make the window in the 'new lounge' into large glass doors and lay patio so accessible from lounge and current sun room...

Thanks kazzh and annabellaamy! We really like the idea of zoning living and sleeping space. Do you think using the lounge as a bedroom would be a waste of the evening sun we get in the current lounge? And do you have an idea of cost to covert the sun room into a proper living space?

I think you'll miss the sunset in your lounge room but you'll love it in your bedroom !!....not sure of your lifestyle but we love watching the sunset from bed !!....

Depends how much insulation you need doing and what roof you choose. I would say 2K.

( put patio doors into both bedrooms for access to veranda area and garage /laundry )

Thanks OnePlan, we hadn't considered moving the kitchen to that bedroom. And like the idea of a veranda across the bedrooms at the back. The boiler is currently in the cupboard inside bedroom two. Do you think this would be worth moving? / Working around? How would you configure the kitchen/living/dining area?

Keep the boiler where it is - just maybe knock through the other side of chimney to form a link between both living areas - lots of connotations for this space possible. If you were our clients we’d suggest you book an ‘A service ‘ project to cover both spaces and we’d come up with a few suggestions and hone it down from there to one that ticks all your boxes ... then you can shop around with the end result !

There are loads of options, a few ideas. I was adamant about losing too much garage space, but it was worth the conversion, we have a very small garage just for bikes. Anything else you can put up a shed/workshop in the garden. I would have s big entrance that flows left for sleeping and right for living.

Thanks Darren, this is interesting. Like you we are after that extra storage space for bikes! We are leaning towards layouts with the living at the back and sleeping at the front (which also seems to be a bit of a theme in bungalow layout discussions that I could find). We would need to get quite a bit of landscaping done to bring the sunroom out to the perimeter of the store room. Do you think an iteration of your idea could work with the existing footprint?

Yes you could with the existing footprint, one idea is you could have a separate laundry: