Need help making my home work better

[Boxhedgeflaterpillar]

Our home is 55sqm. Small, but we are happy here and like the area. I don't want to move mainly due to the expense. The problem then is a lack of space. It is a 2 bed house, one of which is really a single. We are 2 adults and 2 DC. DD7, DS4. There is room at the back for an extension, but I don't want to take on an extra mortgage with the worry over the cost of living looming. Do we (CAN we!) do something clever with the layout and keep our sanity and find some peace in a house with growing DC? Do the adults sleep downstairs? Will that drive us crazy? Should I spilt the main bedroom into 2 with a stud wall? Both rooms would have a window. Could DH and I sleep in the single room? There is just space for a double bed if we take off the door and replace it with a folding door. Can I buy a cheap caravan and stick it in the garden as an escape room? Maybe the last idea is a step too far. Maybe.

Would appreciate hearing your ideas and if anyone has had a similar dilemma. We have 26sqm approx upstairs to play with. I'll try and upload a floor plan..

[Paddingtons]

Get a quote for the loft definitely? If cheaper than stamp duty and moving costs it would be well worth it!

[WeirdManFromRummikub]

Do you have a garage?

[VerveClique]

Move your bathroom to between the two bedrooms and create a third bedroom?

[Boxhedgeflaterpillar]

Floor plan

[TwoBlueFish]

Floor plan?

[Boxhedgeflaterpillar]

There is a loft but it has wooden trusses criss crossing all through it, so wouldn't be easy to convert. May be cheaper than an extension though. The thought of going up all those stairs to bed is a drag though. Kids might not mind so much!

[HSKAT]

What about loft space?