My husband and I are nearly at the end of a major owner build - before this the biggest thing we had built was a farm shed... Based on BMT's current building cost calculator we will have saved over 50% of the replacement cost of our home by owner building - it has been a hard slog but worth it in the end. Our valuer has indicated that at completion our mortgage will be around 30% of our properties value, which means we will have built in a LOT of equity. It's not for everyone but if you can - I say go for it! My lessons learnt so far: Go the extra mile in ensuring your plans are detailed/you have incorporated EVERYTHING you want in your new house before starting - major budget blowouts are inevitable if you keep changing things mid-stride! Have a plan and a budget and work to it:) Have a bill of materials and specifications that includes everything - even down to the brands, there is a major cost difference in a garden variety Bunning's vanity vs. a bespoke custom floating one - and unless you specify exactly what you require you will not get what you want and your budget will never be accurate (and your cost overruns will be scary!). Decide what level you want to be involved at: do you have plans to be hands on - building everything you can, learning all the trades like framing/plastering/tiling etc. or are you envisioning a owner-managing role where you are engaging trades to complete the work for you; this will dramatically alter the cost and the time the project will take. Will you be able to be present on site when trades are there to manage them? One of the major things a builder does is crisis control and problem solving!! Bespoke architect or kit or somewhere in between?? Another thing that will bear greatly on cost and project staging. For first time owner builders I would recommend a kit home - most of the inclusions are standard, you can modify many of the designs and the deliveries are staged so you don't have an influx of materials all at once. Most of the kit home providers are great with their after sales support and advice when you need it - they wan't to see you succeed as their business relies on successful customers! Ensure your finance is concrete and you are able to draw down funds as you need them - this is a major stumbling block when it comes to owner building as most financial institutions will not loan to owner builders. There is nothing more frustrating than getting halfway through a build only to find out that due to prevailing economic conditions your current lending provider will not loan you any more money and you have actually devalued your property by partially erecting a home (oh, yes sadly- I'm speaking from experience...). Build in contingency funds to any estimate of costs - you will sleep better at night. Be aware that even if you do obtain construction finance that most banks will pay these retrospectively - you have to spend the money before they will draw it down off your loan - that means having enough money to fund a stage in full ( i.e. brickwork, plumbing, electrical) before drawing down loan funds - and you can be guaranteed they will want to send round the valuer to ensure that the work has been carried out! Have written quotations and lists of inclusions/bill of materials when negotiating with tradesman and contractors - many are happy to work with you but a lot will take advantage of your naivety... Don't be left out on a limb after getting to the end of the job only to have your contractor demand large blowout payments - this is readily avoided by having everything in writing and will ensure your contractor keeps you informed of any expected costs overruns. Do not underestimate the impact an owner build will have on your life... You will be eating, living, breathing and dreaming it for as long as it takes (and yes there will be nightmares!). Be honest with yourself about how much time and commitment you are willing to sacrifice to make the cost savings worthwhile - if you are the kind of person who begrudges any intrusion into your personal time, can't go a week without a social occasion and can't handle working long hours and getting your hands dirty...maybe owner building isn't for you... Enjoy the journey! My husband and I have tackled every job we have been capable of - we have put up the framing, put on the roof, done the guttering, installed the insulation and windows and we are plastering the inside and painting as I speak. It has been good to learn new skills and exceptionally rewarding to see it all come together - sure if I had my time over again I would have done a few things differently but we don't regret the decision to take charge of our future and build our own home just the way we want it. Anything is possible if you give it a try!!

Wilson, one way to accrue a list of potential builders, is to drive around your area of Sydney and make note of which builders and building projects similar to yours as well as those who are currently building houses you admire. I would compile as many as possible and be discerning in your list. You might also notice how long particular builds are taking and if tradesmen are regularly on-site. I realise in Sydney this could be a big job, but it may well be worth your time. Then, check out the builders' websites to see their projects and any reviews. As you move closer to short-listing builders, make an appointment to meet with them to show and talk about your project. You will get a better feel for who you think you can work with, any creative ideas they may have to improve elements of your plan, reduce building costs, etc.

As I've stated time and time again in other posts, everything invariably comes down to money..........yes oklouise the process involves various parties (client, council, bank, builder etc) however IMO the designer is the executive expert in creatively negotiating and resolving the solution most effectively as they (should) have the knowledge and or connections/ across the many relevant areas in order to balance the needs of the project within the contextual conditions and nominated (financial) limitations........the issue I think is that when professionals fail to identify and manage the critical elements and priorities when proposing a solution, disappointment (of course) occurs and unfortunately the reputation of (the design service) "not being worth it" substantiated - I completely understand/see that following some (unfortunate) experiences you've become experienced/knowledgeable yourself in being able to achieve what you're seeking with your own skill, and that's great......but others (with less capacity/experience in that regard) can become caught/influenced going down the wrong path misinformed or limited to obtain the best solution for their particular needs because they don't understand what front end investment in the design process can achieve, and that is appropriate alignment of people's goals within budget - but for this to be successful services have to be performed in a particular (efficient) format and the designer needs to be able to (quickly) apply/project super accurate costings to specific proposals and that takes specific experience and skill..................this is right here is one of the significant challenges of our particular professional, as from where we stand, we can seriously help people, but people have to have the money, trust in, and commitment to the design process, which is not black and white, nor scientific, and be challenging on various levels.......you hit the nail with the comment "trust that their ideas can be converted to reality without any horrible surprises"........it seems to me, from experience, that the money conversation is often strategically avoided early in the professional relationship because the pro's are scared they'll possibly lose the job, when in fact it should be tackled head on assertively and realistically.........it's pretty simple, clear communication and honesty - more of that would go a fair way in avoiding the issues plaguing this game ;)

part of the builders price includes insurance for the workers and the materials and we aarrnged for our builder to employ our electrician and plumber and then we paid the wages direct without the builders' percentage...your labour costs may be cheaper but will your workers be properly insured and what about the costs for the concrete and all the materials for the tiler that the builder may be able to source much more cheaply than you or your family and, for the size of the house that you've asked about in your other posts, you'll need a team of concretors to manage a slab that big...why not ask the builder what discount he'll give for you to supply the slab...the tiler isn't such an issue as it's decoration after the builder has finished most of the work but will your tiler do all the wall prep and arrange waterproofing and the plumber to work around your tiler? the only way to find out for sure is to ask the builder