Are these windows gaps and uneven brick finishing acceptable

No it’s not. Specially if it exposes the internal framing. Brick cladding is supposed to protect internal structural framing from weather elements as they normally untreated for weather exposure. You need to ask your builder to rectify by possibly provide weatherboard cladding to exposed section of wall and fill in any gaps to avoid further issues.

i will ask. outdoor sealing is yet to be done.

Mistake is happened now i know i am the sufferer but I want a solution to fix it bec i dont think the buider will do this demolish

B,

You and I know each other well outside of the forum, and I really like you. So I am not meaning any ill will by the following comments.

I have been with you on this journey well before you chose a builder and I know you have a really tight budget so your choice of builder was really limited

What I have seen following your journey is the same thing that is happening to a number of other forum members who also speak with me regularly who are also having issues and it should serve as warning to other people who are looking to build in Sydney,

There are a number of Indian builders in the west and south west of Sydney ( mainly targeting the Indian community) who are promising the most amazing specifications and promising to build homes for $1000- 1500/sqm, literally half of what the cost should be.

And then you end up with the poorest quality work. Like yours. You have headers missing over windows, a sewer pipe through one of your living rooms and now this brick issue, which I have no idea how they will fix properly, No doubt they will cover it with a massive angle.

You are not alone. I have seen slabs poured without drop edge beams and the soil under the slab now hanging 1,000mm in the air on a boundary and the certifier not issuing an OC because of it. Just to name one example.

The lesson is you cannot build a 400sqm home in Sydney for $500,000 these days without taking a huge number of shortcuts.

Otherwise this is what you get.

Don't settle for angles. The brickwork needs pulling down

Did he say how it is going to be fixed?
Because the only way to actually FIX it is to pull the wall down and start again.
I'd suggest he's got a way of covering his error up and he's calling that a fix.

Please read contract about defects and incomplete work so aware of procedure

If don’t contest, you have accepted work

Metricon will tell you using angles like this is "accepted industry practice" This is BS, this is a defect, the wall opening is too big for the window and needs to be re-done.

Get an independent building inspection done now. Once handover is done, if they didn't fix it beforehand its doubtful they ever will. Get someone independent from them, not referred by them. And expect to pay for it, however it will should save you lots in the end, or at least give you peace of mind.