Almost impossible to estimate until some demolition has been done. Even then what is the final design and quality of fit out? Certainly get an architect on board with a project such as this, even more so if you've built before. While a building designer or a good draftsman can do the design, plans and documents for you (and they can do them to the highest standards by the way), the extra services that an architect provides will be required.

Yes, this is very much a 'how long is a piece of string' question! And the answer is probably very much a 'you get what you pay for' answer! We have just built a house and paid in the vicinity 0f $1800/m2 - the builder we used has 3 lots of 'specs' for houses - basically the lower budget, the middle, and the higher end. For our given floor plan they could quote on each of the specs and we went with the middle one. This involve things like the quality of the fittings/appliances etc. eg. with the low spec we would have got a basic kitchen with formica benchtops, the middle spec included soft-close drawers and hinges with stone benchtops etc and it was the same for all the fittings throughout the house - toilets/vanities/laundry fit out/quality of carpet/type of concrete for drive etc. A word of warning - we had a friend who was very happy because he built a house for just over $1000/m2 - but you could tell! It looked all fine when it was brand new but after a few months you could tell the poor quality of some fittings. And the carpets were already looking worn! so - you get what you pay for.

Hi Deanne, When you say you are doing the kitchen, does that mean you have to do the planning (design) and specifying of it also? I would have thought Storybook supplied a home with the (kitchen) plans included? If not, your builder will be able to guide you, however here are a couple of tips... 1. Choose your appliances early AND STICK WITH THEM. Often individual appliances have specific needs outside of standard eg power requirement (over 10amps), rangehood ducting direction and type, clearances to overhead cupboards, water to fridge etc. 2. Using the appliances, work out the layout (design) of the kitchen and where you want the cooking, cleaning, fridge etc. From there you need to work out power point locations for all appliances (many people forget the microwave) plus the everyday items like phone chargers, toaster, kettle etc. 3. Go to kitchen display showrooms such as Laminex. They have completed kitchens on display where you can understand the difference between a waterfall end (benchtop style), a shaker profile door (Hampton's style cabinet front) and play around with colours and finishes. 4. Put it all together in detail and you have created a specification! Re finding a builder, I agree with the above. Get a couple of names from Storybook as you don't need beginner mistakes, and go with the builder you guys are COMFORTABLE with. Price is only part of the journey. Good luck with the build.

it's not just the cost of the product that you need to compare it's also the additional costs of labour and any extra structural support, variations to insulation and painting...your builder should be able to give you a realistic comparison price for several different products that includes all the extras