Purchasing Materials: Builder or Homeowner

Just wondering what the benefits are, if any, of the home owner purchasing materials themselves. Obviously this wouldn't apply to materials which require specific knowledge or where the builder gets good discounts, but what about things like appliances, tapware, light fittings etc which can be bought online or from overseas for lower prices?

If we were to go down this route, would this go in the contract?

We did this when building with Fairmont when it came to wall and floor tiles because their range was deplorable. We found the credit given, less a 'handling fee' was a pittance, but were left with little choice.

If buying from overseas, or what you intend to buy online, must conform to Aust standards or it wont be installed.

As a builder I know that generally the trade discount is seen as part of the income for the job- so it can make a difference to the contract if the owner supplies materials. To avoid conflict this should be clear from the start.
As a online retailer of renovation materials at http://www.restorationonline.com.au we certainly offer discounts to tradesmen but also to owners if there is a reasonable quantity being purchased.
Some builders are happy to have the job done by the owner- just be sure that you are communicating well to avoid any misunderstanding.
Cheers and good luck!

Any discounts received by builders for purchasing materials NEVER get passed on to the customer! (Dennis said it!) If you think about it, why should it? They have the buying capacity, ABN number and have to transport. Years ago a project home builder gave us a tiny credit on some things we didn't want as part of the deal offered.