Hi there Dave, sorry for not responding sooner, I have been a bit unwell. I would like to add the following ideas. 1) You mention going to a kitchen company and showing your current kitchen plan, the better thing for you to have done would to have taken your floor plan with measurements and asked them what they would suggest, as long as they didn't want to charge you. This way you would get more ideas, not just them politely agreeing hoping to get your business, and why not, 2) I would contact several builders to come on site and give you their ideas of what needs to be done and advise if you would need to involve council and the building costs involved in doing this. The builders will have their own trades electrical and plumbing that work as a team 3) You mention flat packs, they are a great option and can save you a lot of money, Bunnings will do a kitchen plan and cost in store at no charge, Ikea will do the same but not sure about any charges. You can also go online to both and work out a plan, but I would strongly suggest you speak face to face them as they know their product. Bunnings run in store programs where they show you how to assemble their cabinets, both stores have video tutorials, believe me it's worth watching as flat pack anything can be a nightmare. If you can assemble your own cabinets in your own time it will save you a.lot of money, starting sooner than later would be a very good idea I didn't get up to mentioning in planning the layout of your kitchen that the larger the cabinets you use will also save money, ie 2 x 900 as against 3 x 600, the cost per unit plus instead of paying for 3 cabinets to be installed it's 2. It's also makes for a simpler looking design. Most of our Bunnings kitchen is made up of 900 units 2 x Drawers & 900 units 3 x drawer. The exception is 800 cabinet for the sink. 5) Cook top, I would strongly suggest you work a 900 into your kitchen (this would mean having to use a smaller cabinet either side or just between the cook top and the wall). 900 cook tops give superior space to use especially when using large pots/woks and fry pans, they also help to protect laminated bench tops from accidental put down and burns, 6) Range hood, the best look for your kitchen wouldn't be a large stainless wall mounted unit and that's good news as the intergrated ones in over head cabinets would not only look better, give more storage and would cost less. 7) The Island, you have been trying to decide what size, well if you don't have plumbing installed, the island can be free standing with or with out plinths and can be moved if you decide you need more space. You do need to have a couple of power points but make sure they have a longer connection. Our Island is 2.7 x 1200 and has both a cook top and oven with power points and can be moved approx 500m in each direction due to having longer connections. 8) Bench tops, you mention laminate due to cost, we had that problem what with the size of the island. So we went with Plywood (not Marine) We went to Mr Plywood who when the next delivery came in chose a piece with a beautiful grain, had it cut to size and delivered. The plywood sheet came in a 3 meter length but not all do, we had enough to do the sink bench and a top for a tressel table & legs my better half made. cost with delivery 2hrs approx $400. We did a shadow line bench top which had a smaller size white set back under lay. You need to use a good two pack pot sealant on the Plywood. Finally I don't know where I got the picture of the retro coloured kitchen cabinets, but look online at both Bunnings and Ikea cheers

Appreciate the thoughts and this may be a solid option elsewhere in the country but in my circumstances I don't plan to be moving from this property any time before the kids are 18. It is located in Sydney's inner west, and in a specific high school catchment I plan to take advantage of when the kids are older. Stamp duty to buy the property was close to $100k and if moving out even in ten years to a larger property; that averages $10k a year spent on stamp duty. I know 115m2 internal is tight, as is the fixed layout due to existing bedroom walls, ceiling heights, wet areas, and the like - but there has to be a way to make this work... I have read that 4 bedroom apartments should be 102m2 or bigger. I am willing to make compromises where possible but I really want to create that extra separate room "Multi-purpose room" which can double as a study/work area/kids play area/media room/ad-hoc sleeping accommodation". Paul Di Stefano: I don't think these changes essentially equate to 'rearranging a sock drawer' - this is my PPOR so I am not too concerned what other buyers want or resale value if I plan to hold the property for 10-20 years +... (any trends we design for now may well be outdated by then anyway). Many buyers highly value indoor-outdoor integration. By moving the kitchen to centre, it opens up the rear and creates indoor living->outdoor living link. If I get IKEA flatpack kitchen and DIY as much as possible - have a friend reroute the water/drainage/+his licenced electrical friend...hopefully this work would cost sub-$20k. Adding the sliding door to rear is $2.5k. Ensuite, bathroom and laundry I believe I can fitout for $10-15k all up- let's say 15k (again, tiling, raise flooring, showers/fixtures/flat pack laudnry cabinetry install all done in-house without tradies). The only thing I really need professionals for is to move the gas line in kitchen, BIR installs, stone benchtop, and maybe a few adhoc wall demo/construction/doorway moving - lets call that 10k. All up ballpark that is 47.5k? Sirius- If I go with your style plan then I lose the potential 4th bed space and have no where for relatives to stay, babysitter, nanny; etc :( Maybe it is a possibility that the main living space be used for lounge room and kitchen, we can always put dining table in the Multi-purpose room, then when that room is needed for sleeping accommodation, the dining table be moved to the side and kids can eat dinner on island bench bar; lounge or outside table... ? those doors to each side of the fireplace as you suggest - this space is very cramped outside (2.45m width) and potentially would be used to store trailer or garden shed, there is an old terrace built on zero-boundary there and they have a DA to go 2 storeys; which will shadow the whole area. This is why I planned to make the rear south corner a raised deck and try to channel house activity leading out the existing glass french door to that deck, or the rear sliding door. See photo-(my house is on the left, terrace zero boundary on right, and front on is a wooden dividing fence which on the opposite side is the driveway/1 car park and front street.

Update on this. We have decided to keep upstairs unchanged in terms of layout. We will live in the house for a period before making any layout changes upstairs - 2 Bedrooms will be for our girls, while our son will sleep downstairs in the living room (now bedroom) as this was seldom going to be used. Now we are looking at the kitchen design - photos attached of current kitchen which will be completely refreshed along with the tiling in the kitchen / living area. Looking for any ideas on how to best update the kitchen - notice under the stair case is not currently being utilised but we would like to perhaps have the fridge or pantry under the stairs to include this dead space. From the kitchen window to the stair case is 4950mm x 3200mm approximately depth of the current kitchen. The stair case hangs into the kitchen around 750-800mm. Wondering if it would look silly to have perhaps the fridge built here and this cabinetry would sit proud of the bench space next to it, but we could also install deeper bench space to balance the look... We are planning to have the eye-saw built in fridge space currently in the kitchen removed altogether.

any renovation is always more expensive than expected but it's not possible to make realistic suggestions without dimensions of the whole house so your plan needs to include sizes of the bedrooms and living areas but also include dimensions of hallways, kitchen, bathroom, laundry the cupboard in the entry and the wiw? in the extension and photos would also would help