Probably best to limit your palette of colours. I would go with a paint colour that matches the Colorbond Mangrove colour as it will complement the brickwork, work well with your planting, and not be a feature - you need a colour that recedes into the background as tour brickwork is the feature. The weatherboard to the bay window should also be the same colour. Best of luck, Dr Retro of Dr Retro House Calls

Make sure you insulate your new walls together with the walls of the existing house. Homes with all walls insulated properly will make the house twice as comfortable and can reduce the heating and cooling costs by 70% 4 Seasons Home Insulation

with 22m to the rear boundary my suggestion would be to build a separate dwelling using a variation of the house plans on the yourhome.gov.au website and connect the two building with an extension of the existing covered deck to make a shared alfresco...the new building would have a raked ceiling with the roof sloping down from north to south.. the web site has detailed plans and specs suitable for Adelaide that a builder could use to estimate costs eg 150sqm @ say $2000-$3000 per sqm depending on materials and quality of finish and contingencies but you'll need to discuss your ideas with council as there's also a restriction on the total area of the block that can be covered with buildings but something like this could work with the mancave extended from the carport but you also need to ensure enough light and view into the family dining and kitchen

Hi all, I'm back again! We're almost there and just trying to decide between using axon sycon cladding or weathergroove for the vertical cladding. Would really appreciate your thoughts on whether the axon would look too modern for the house? We're keen on it for durability, low maintenance. We're thinking of the narrow board, smooth and painting it a colour similar to this https://www.haymespaint.com.au/index.php/explore-colours/colorbond/view/12/4941 I've reattached the external photos.. the plan is to replace all the brown cladding and leave the brick as is. Any help would be great. I'm very much a novice! Thank you 🙂