Browse Forums Building A New House 1 Nov 23, 2016 2:45 pm Are there any estimators on here who could point me in the right direction of building fixed costs? For example, there would be certain fixed costs that are irrespective of size (to a point)…… that builders would encounter. My question relates to how big I intend to build. For example, I’ve been quoted $2500 per Sqm to build a 100 sqm house, where as a larger house that cost comes down $1000 per sqm for 240 sqm….. there is a certain economies of scale I know, but at what point does going down in size become more expensive, and going larger cheaper? Like a builder quoting $1000 sqm, if I chose to build 100 sqm = $100,000, but it doesn’t work this way……… so what are the constants in the fixed costs? Thank you for your time. K Re: Building - Fixed costs 2Nov 23, 2016 3:13 pm Not sure this is going to answer your question... I believe anything structural is not fixed... The size of the house going to decide the slab size, how much frame you need for wall and roof, how many bricks you need and etc... You can build a 20 sq or 30 sq home but it still gonna have 1 kitchen...so it needs 1 sink, 1 tap mixer, almost same size benchtop... same goes with other fittings and electrical... Hope it helps! Re: Building - Fixed costs 4Nov 24, 2016 7:53 am KyouRTee Thanks. Do builders provide breakdowns of the costings? I don't mind margin, we all have to eat, but be nice to see what makes up a price. It really depends on who the builder is.... Each builder has their own way of breaking down the costs...there is no standard.... Re: Building - Fixed costs 5Dec 08, 2016 10:17 pm I'm an estimator for a Perth building company, working on a single storey 2 bathroom house as its easier there are a lot of costs that stays the same between a 100m2 house and a 300m2. Going from the start of the building process excluding shire fees I will do a brief rundown. Engineering and surveying fees are exactly the same, so is energy rating, indemnity insurance or how I think it's called in the eastern states is very similar in price, you would have exactly the same amount of deliveries for suppliers which doesn't seem like much but does add up. Plumbing is very similar as well, maybe $1000 difference between the 2, your main electrical items that cost the most stays the same as well, whitegoods don't change neither does waterproofing costs (this would probably be different on the east coast) the commission a sales rep makes is probably the same. The highest cost in WA is probably plumbing and commission to the sales rep which would be very similar to both houses, hope this helps Thank you so much everyone. This all makes a lot of sense. I guess when you talk to a builder who butters up everything to look very polished, you get to start believing… 7 17511 So AFAIk the outcomes of the BAL ratings form part of a clause that allows them to pass these costs on to you. However the more relevant detail is how did it go from 19… 1 9142 I am not sure whether Perth has its own way of doing things in regards to this. Most of Perth has class A (sandy soil), except for some areas near rivers or hills. 2 13053 |