first describe the climate where you want to live and do you already have a block of land?

thank you for coming back to me. We live in Victoria, Australia warm to hot summers and rain and cool winters. I have only just started the journey on this proposed change of lifestyle and haven't as yet looked at land though it would most likely be in a small village/town setting

Perhaps you could get a duplex. Complete separate residences but could spend as much time togather as you want.

It would so much easier to find a house that could be easily adjusted to accommodate your needs, building a new home is very involved and takes a lot of time

thank you for your input

How exciting, and a great plan for living independently while releasing some equity to enjoy life and achieve companionship. Co-Living is an idea that is likely to be a solution for many family types as housing costs increase and available land decreases.

I think you are on the right track looking to build what suits you - otherwise someone will be in the second-best spaces in a home not built for sharing. (You'll also be future proofing your build for changing circumstances too). The key will be to include some flexible spaces (particularly with a second living/guest room space plus laundry/storage as you suggest) that will give you the function you need, while providing separate bed/living suites ensuring each of you has your own spaces to decorate and relax in. Spaces don't have to be Big. Start by making a list of what you each need/want, and the things that you are happy to share.