Current floor plan.

Style of home.

Sorry about the mess.. the only living space

I'd suggest there is way too many variables that we don't know .

The middle pix says 'style of house' , but I assume that is actually your place ? There doesn't seem much room on the left hand side , so where is all the space ?

Is it an upmarket area , a rural town -- why I ask , is you can either add on , demolish and rebuild , or demolish and possibly relocate a bigger house , or even just sell and buy something bigger . That would be where I'd start -- for example , spending $300k in an upmarket area will probably add that or more ( plus your enjoyment ) ; but in a rural area that might be all the finished place is worth afterwards .

It would be difficult to match everything , including the floorboards etc , and even the roof trusses could be a major effort . Anything can be done , but sometimes you have to ask why , or even could you get a similar result differently .

I guess its a bit like having an older leather 2 seater couch -- to make it a 3 seater at an upholsterers , match everything ( or have to put different leather panels and tones in because the original isn't available ) and have to pay for bespoke labour , may be $3000 , whereas you can sell it as is for $200 , and buy exactly what you want for $2000 .

North?

what is the width and length of the whole block, what is the distance from the house to the rear and both side fences, is there a driveway and garage or other building on the block ....a site plan showing the house, dimensions, driveway and direction of north on the block would be useful

To square up the front would be expensive with little gain, as the whole roof would need to be changed. The best open would be to extend out the back. What about converting bed 3 to extra living space and extending out the back with 2 bedrooms and additional bathroom.

Thanks everyone.. Block is just over about 20x50m the ock runs nnw- see Northern side is back fence. Eastern side fence is driveway side about 6-7mtrs other side is about 2-3. Want to make best option for inside outside living.

Sorry yes the photo of the front is my house locate in an average neighbourhood in Toowoomba qld. Current value about $330000-350000.

looks like plenty of space for extending but please confirm that the driveway is west.. if the back fence is NORTH i would have expected the driveway side to be east??

I was thinking maybe one of these.. both involve splitting bed 3 to 2x 3x3 bedrooms (would they be to small?- no built ins) and converting the laundry area into a bathroom and pantry area. Would make bathroom small and in first drawing it would be the main... with a stack washer dryer in the room which are both cons. The current main bathroom would become the attached bath to the master- which would only be 3.4x3.6 plus new built ins (to small??) And the new living area would be the fresh extension.

Plan 2 would mean laundry become the attached and current laundry would be split between bathroom, party and stacked washer dryer.. bedroom would be converted to living space and wall between kitchen and bedroom taken out. And main bedroom would be the extension.... not ideal is access to master which would be basically through kitchen and past other mechanicals plus would be bedroom privacy??

Or I could do both not split the bedroom 3 and add master and add living? Though that's getting $$$. And am trying to think efficiently and make most of what is existing before extending. Thanks!!

Yes sorry I'm an idiot driveway eastern side sorry

3x3 is fine for kid's bedrooms. I think both your suggested plans are good.
When I extended my house, in a rural area, I spoke to a local builder who was able to give me approx costs. One of your local builders should be able to give you a ball park figure for each option.
I also spoke to a real estate about projected resale values if worknwas to proceed. Although that is not always accurate; I was told I would get half the costs back if I was to sell afterwards. This suited me as I had no plans to sell. Prices in my area boomed soon after, so those predictions were no longer accurate.

is the laundry ceiling sloped or flat, is the laundry floor at the same level as the kitchen floor, if the bathroom is 1800 x 1600 the hallway between the bedrooms should be big enough to include a linen cupboard or enlarge the bathroom but what is in the bathroom (is there a shower toilet vanity bath?) we need to know the precise distance from the house to the side fences as it will make a dramatic difference to possible options..i've attached a copy of the floor plan can you please add in location of doors, windows, toilet, taps, sinks, shower etc and please describe your local climate

Laundry floor level with rest lower ceiling sloping. Driveway side width is 6m other western side is 3. Sorry my bathroom length should have been 2.6m.

Temperate climate. Thanks.. have marked s for sink tape locations b for bath plumbing and t for toilet also g for where the gas over is.

Just at a quick glance , the best / easiest / cheapest would be turn Bed 3 into the Kitchen ( if the kitchen stays where it is , theres almost no way to avoid it having low light/no view ) -- the plumbing etc could be moved over quite easily .

I'd then do 2 new bedrooms and an en-suite ( and probably move the other WC too , or add a powder room ) , stepped down on a concrete pad 'out the back' . This keeps the roof way easier , not too much plumbing to move , not overcapitalising everything .

The nest step up from that would be to demolish the laundry , and do a full width addition , I suspect stepped down and on a slab would be easier and cheaper than having to extend the timber floor , and accomodating the roof ( you would probably have to do full roof trusses , and possibly even take the rear half of you existing roof off and modify those trusses ) to get enough slope .

Of course there are other options , such as making Bed 3 your master and en-suite , and moving most or all your living , kitchen , laundry to the rear ( North ) and get more indoor/outdoor flow , but you'd be double the cost in ballpark figures , as you'd have a lot more plumbing and gas to move , although most of the 'new' stuff would be easy to install -- either under the slab , or under the floor if you retain a timber floor and piles ( stumps ) -- but it still costs !

attempting an extension at the same floor height could mean changes to the existing roof but if you were to consider an extension as a slab on ground a few steps down from the original house the new roof (including over the old laundry) could be a very low skillion roof with a raked ceiling then divide bed 3 into a new bedroom and pantry to increase kitchen space, add a toilet to the family bathroom and a front porch, carport and alfresco that could all be added in stages