You need to do some research of what a similar raised house sells for in your area. That will determine your budget and choices.

Andy Pat here is a current photo (mind the existing colours). Thanks everyone for your comments. Will be watching the block to see how they restore those homes. Think I will be keeping the original wall sheeting at this stage but as mentioned above running new services could be an issue (as there isn't a lot of power etc currently). Think a new plasterboard ceiling will be the extend of plasterboard upstairs (the existing is made up of a chipboard compound that is falling away in parts.

attempting minimum changes to the original structure my suggestions use the rumpus for a new master suite, divides the original living into a media lounge and parents' retreat (a narrow hallway would be wasted space and the remaining lounge is big enough for generous furniture arrangement although there could be a pantry and narrow study?), i've sacrificed the original ens in favour of more space for bed 2 and twin biw for bed 1 and 2, moved the biw in bed 3 for easier furniture placement and a bush view, converted the original wiw into a study and added a mudroom (or open verandah?) to connect the garage to the house.. the main feature of this renovations is the new family room , laundry and pwdr with north and bush views ...size of the rooms will depend on angled boundary and north window in the meals area and there's a laundry and powder room with easy access indoors and out ... the kitchen has been rearranged to reduce traffic in the work areas and enlarge the dining room, the old meals storage moved to the other side of the room and the wall behind the fridge and wall cabinets lowered or an opening added to brighten the hallway (creates a wide shelf above the fridge and cabinets accessed from the hall for display?) and consider solar skylights for the hallway and parents retreat... raising the new floor of the extension to the same level as the kitchen/dining would be ideal with a flat ceiling (saves the expense of attempting to match the original raked ceilings an dteh lower ceiling in the family room will be cosier and focus the view outside) a low skillion roof and deep eaves with tall barge to emphasise the horizontal line of the "flat". roof.. OR a gable roof at right angles to the main house AND?OR the family room could also step down from the dining room but that would use up floor space and lose the breakfast bar stools and maybe there's already enough steps elsewhere in the house eg taking parents' washing around to the new laundry already uses three flight of steps so i've added a laundry chute from the ens..and for heating and cooling there should be opaque roller blinds on the most exposed windows and the outside wall of the deck and Reverse Cycle AC for the whole house plus a gas/electric log fire in the family room for visual appeal and the old garage would make a great rumpus, mancave or kids retreat ....hopefully these changes will make a more comfortable modern home without losing any of the original style and we updated our mission brown to a weathered copper that is less red without changing e original colour era and this version includes a pantry

I think you should talk to a local builder or architect