There are some hints at this link:
http://anewhouse.com.au/2020/06/practic ... -12-hints/

Once you get more prices than around 5 it gets the less likely that builders will be giving a keen price.
It cost them to prepare a firm price.
If they have…

My prices are 25 years out of date. . . But the house probably only cost 10% extra.

Depends on how much money you have got left and how much time.
Seed is cheapest but most involved.
Turf is more expensive and still involves some effort on preparation.
Landscaper is no…

One week is plenty.
Small amount of puddling is no issue.

Standard Builders don't want to do much more than vary one of their standard plans.
When I wanted to build a house to my design I engaged a building designer/draftie rather…

A reflective film by itself makes a huge difference.

Getting a highly reflective window film (Not a Tint) can make a huge difference to the heat gain from a west facing window.

On my builds I've always taken a lot of interest in the initial plumbing.
If this looks good it gives an indication the builder is interested in quality.
If it looks bad…

Any West facing windows (or East facing)will get minimal passive heating in winter, but massive solar overheating in summer.
The only way I have ever hadcomfortable summer afternoon/evening conditions in rooms…

It is very unlikely to be concrete encased.
Concrete encasement is only normally done if there are plans to build within the easement before the construction is started.
If you want to…

Looks nice but to look really classy you need the thicker benchtop.
Problems are its hard to put something down quietly, and don't drop china or glasses . . . .…

CIPP lines are effective and minimise the loss in diameter of the pipe.
As most pipes are 90-100mm dia that is fairly important.
Its a technique that's used by most water…

If you are going to use tradies for the slab its going to be easiest, quickest, and cheapest, to engage someone to do steel fixing , form work and concreting…

If you have a pressure washer these are a couple of attachments that will clean the leaves out.
Would need to be used with care as
you don't want to be…

I would be going for gutter guards to avoid the cleaning.

The cost really depends on what quality you want.
I have found the solar quotes website good value . . .

I built a single storey house with windows facing north, rather than south, and got 6 stars.
The only other change I made was as they originally went down to…

Its not efficiency that the concern (although the best LPG unit are around 90%) with LPG, its fuel costs.
LPG is the most expensive form of heating anything, especially with bottles…

Power outlet in garage ceiling for powered door.
Hall Light switch next to connecting door from garage.
If you ever want one of those spray toilet seats (Might be useful at the…

Mortar has lime which improves the workability for bricklaying but reduces the final strength compared with concrete.
Concrete is cement and aggregate . . . . For normal concrete you use…

If you are still early in the process there are 3 posts on my website that describes how we planned the layout of our first Australian house (The one with…

Just too small.
We came from UK where people have laundry appliances in the kitchen so thought the smaller the better.
Its good to have some space for
Laundry baskets a
Ability to…

Probably a good method would be:
Keep wet overnight.
Prime with a cement slurry
Fill with sand and cement mix (absolutely not a bricklaying mortar)

Should work for holes but crack repair will not…

Yes you could . . . . ;. but I made that sort of mistake once, so I wouldn't recommend it.

The problem is going to be supply of imported fittings.
I ordered 20 special plumbing fittings early February normally available in a week, but told would be delivered by the end…

Seems like plenty of lights but nowhere near enough power sockets.
Unless you want power boards and extension leads all round the house you probably need 2-3 times as many double…

I would be using rapid set concrete.

Here is some information about why foundations on some soils need to kept dry.

The way I have done this in the past is hang the posts of the horizontal bearers which themselves are supported at the finished level.
The holes can then be filled…