Also video may help.

Looks like it doesn’t accept short video.

please post plans of the house with dimensions including direction of north and distance from house to boundaries and is there a driveway and carport downstairs under the deck as well as driveway and the entry upstairs through the upstairs carport??

Are you thinking like this?

Can you post a site plan showing northpoint. What steps? Between carport and raised deck, down from new deck adjacent to front of carport?, down to back yard replacing existing steps? This will need to match your desire lines.
You are raising how high 1, 2 or 3 steps?
Does water drain through carport to deck?
On side of carport maybe extend current roof line and shade sail at rear over existing deck area may work, depending on sun.

No video

I had a similar issue and struggled with ideas until I got a guy from one of the awning companies to visit and quote. He solved the issues and I am so happy. I was also worried about missing the high views, however the usabillity of the new space makes up for it.

The back of the house faces West (ie from deck looking at pool is west).
The short tiled awning which we use as our main entry faces North.

what is the distance from the house to the boundaries and what's downstairs below the carport and deck?? if you lower the deck the height downstairs is compromised but it looks like you don't use the existing carport is there an alternative carspace? replacing the deck would be an opportunity to make better use of the whole space but we need to know what's already there ... best way to control direct western sun is with vertical screening not roofing (eg sliding shade cloth screens?) and do you need/want a roof over the deck to make a weatherproof area?

There isn’t anything under the deck at the moment just access to under house. A driveway runs from the carpark area (next to the carport) down to a double garage. Boundaries aren’t a real problem as it’s on a couple of acres.
The only outside cover attached to the house at the moment is the carport. So we need outside area for some regular stuff like firewood, smelly sports gear, shoes etc.
We want to raise the deck, currently there’s a step up into the house and into the lounge room is about 30cm high.

the current location is the best option for the stairs as it doesn't affect bedroom privacy and a simple bigger new deck with access at the northern side of the old carport, a flat pergola roof (with or without shadecloth and/or waterproof roofing over some or all of the pergola) would be the easiest using deep beams and posts matching the scale of existing beams and maybe roller doors for the carport could improve year round use to create a breezeway mudroom space and restrict access when necessary...you could also raise the floor of the patio (matching decking) with a step down to the new deck rather than down to the carport? and we've very successfully used giant vertical black shade cloth screens around a similar space to shade western sun and wind and the shadecloth not only reduced over heating but also made the area warmer through winter ...black shade cloth is like looking through flyscreens so doesn't spoil the views and luckily you have convenient storage areas for storing screens if/when not needed

Thanks oklouise for the great ideas. The step down from patio to deck feels good, it defines that space.
So a flat roof over the whole deck would come from our entry door right out to side of carport entry then all the way back to end of deck (towards pool, ie west).
I’m thinking it would be like a big black beam across then big black beam down, sort of a squared in look?

Ok. I would make roof translucent at least over your tiled area to allow light in to doorway,

Possibly a flat rectangular roof from patio to carport and a pitch roof for remainder.

I really like the step down idea (Oklouise).
Only problem is it ends in middle of doorway to lounge room.

as long as there is at least 90cm between the lounge door opening and the change in levels it should be ok (and it's possible to have the opening part of the glass sliding door reversed if necessary) but i kept the longer stairs in the original location to avoid compromising privacy and views from the bedroom window and i love the angled steps and the combination of new roof shapes will look excellent with the original roof

Wow there are so many angles on the rooves (roofs?)... I don't know the right or best option but I imagine the deck being curved, to create some interest. I want bug chunky timbers in dark stain like recycled wharf beams or railway sleepers. I think start by removing the little roof over the porch and opening it up flush with the brick wall of the front door. Then install chunky beams (wood or steel) that fly quite high and straight over the void between the 2 sides of the house. I would use a polycarbonate roof in that area to let extra light through and not make the house entrance too dark. The area behind the carport where the deck is level with the rear of house, I would have a solid roof that matching the pitch of the back of the house, or even not have a roof at all. I would leave the entry deck area and the curve unprotected. My only question is this... is this an area you would hang out seeing its quite disconnected from the living areas? perhaps having a more ramp like entrance with interesting trees in the void area and making a matching deck on the other side might work. I just feel if its only going to be an entrance its a big capital investment and an expensive exercise with all the roofing.

I've had another play with the plan imagining it as a ramp entrance from the parking area to the porch. I left the polycarbonate roof with chunky beams idea but you could leave it open. I then went ahead and drew a new deck on the other side of the house for fun. I totally think the games room should be a dining area, not in near the lounge. It even has a servery right to the kitchen right? A nice timber bifold door opening up onto a deck with alfresco dining could be nice. If that area between the houses is filled with interesting trees and plants it will look quite good. There are lots of palms and ferns and rainforest trees that would be happy in a narrow spot and have shallow roots.

or.... trying to find a left of field but less monumentally expensive idea. what about moving the entrance altogether? what about making that door into the hallway the entrance? There is already a porch there. Just by landscaping and adding a nice path you could define the entrance. I'd close the carport off into a proper garage, which hides all the tools and whatnot and stops people walking through it. Then the issue becomes whether to replace the deck at all or just remove it? You could add a much smaller deck between the buildings and rebuild the rear stairs or just fill with lush plantings. Is that the way you access the pool? Note that the plans mention the porch is made of compressed asbestos sheeting so be careful of that with whatever you do. If it's not damaged in anyway it might be possible to leave as is, or if possible consider getting it removed and made safe. That bar and old entry area could be repurposed for a computer nook. these drawings aren't so great but I hope it helps make sense of what I am saying.

Thank you. Oklouise yes will need to decide on flipping door opening or either angle or extend the square the porch out past house. It’s still great in that it solved the carport height issue. :)

Lots of ideas there fianou luca thank you. I agree it would be great to have a deck on the other side too, especially with kitchen being there. The current deck is where we have nice views.

I hope throwing a bunch of ideas out helps you find what you want to do. Nice views are worth catching!

Yes thank you Fianou Luca, just what we need. We’ve been soo stuck on this for too long. So your fresh ideas are excellent to see. Really appreciate your time and effort for us.

No worries... it's what Houzzer's do. I really appreciate when I put up a question there are so many people willing to give some thought to help. It's hard with decisions like this. There's sort of no right and wrong, but some choices will be more complicated or more expensive. there are so many options. You need to find that solution that is affordable, suits your lifestyle needs, and is sympathetic to the architecture. Its an unusual house, do you know who designed it? Did they make any other houses in your area ? you could drive by and see what others have done to update it, or check out real estate listings. or maybe that's just the architecture geek in me... haha. i wander around my neighbourhood and see what others have done to similar age houses. it's helpful for the little details like trimmings, patios, awnings.