Hi I am in flooring The floor does not have to be water level you have a allowance of 3mm in 1mt or 6mm it 2mt or 9mm in 3mt get the picture The subfloor does have to be hard and smooth But you CAN NOT put the kitchen on the floating floor, the floating floor needs to be able to expand and contract with a min of 10 mm expansion or 1.5mm for every 1mt so a 10mt long room needs 15 mm expansion gap at ether end. Ask the kitchen supplier if he can leave the kick boards of a put them on are the floor is installed

Hi Badobbs Structafloor will only span 600mm unsupported in the 22mm and 450mm in the 19mm version so no, it alone won't fix your issue. A simple fix would be to pull up the floor in the affected area and then 'pack' it up to level, THEN lay some structaflor over the new supported sub floor. This is done by getting a laser level and marking out the low points in the joists then making up packers to suit, or installing a packer and planing it down to suit. It depends on the level of dipping. It will be your cheapest option and definitely a job for your carpenter (unless you're handy). Regarding disturbing the floorboards that is nonsense. If there are other issues such as other sagging floorboards then you can address them at the same time, or fix them down properly with screws. I suspect that the real issue is that the wall removal did not take into account that the floor joists are usually fixed to it and they are now unsupported. If you get under there and find issues with your joists/bearers then it is not a big deal to install a couple of stumps/connect bearers to support them whilst it is open. We do it all the time. Either way laying a new floor over a subfloor without addressing it would be a waste of money and will degrade your new floor. Cheers

anything is possible with enough money but with such a modest budget you might achieve the new bathroom and kitchen OR the extension but it would be difficult to achieve both at the same time but you haven't answered the questions??? what is the distance from the house to the back fence, what are all the floors, walls and roof built out of (ie inside and outside walls, concrete slab on ground, or is it a timber floor with crawl space underneath the house?? and NB where is north? ...what is the shape of the roof (hip or gable tiled roof or??) ...do you have an aerial photo of the roof like Google earth??...extending over the retaining wall shouldn't be a problem with proper cosntruction and there isn't anywhere else to go without losing the best outdoor area that has easy access to inside...the extra lengths of pipe isn't the biggest cost of new plumbing and a ventilating skylight will make a great light source for an internal bathroom...

it would be useful to know the direction of north and the main entry door but, if the view is out through the alfresco, having the kitchen near the laundry and rearranging the master suite would allow better access to the views from all the rooms without needing an extra hallway.. some ideas to consider with space for a bigger island with sink facing the view if preferred