Thank you so much BMF!!! It is indeed by Nazar, and I have subsequently enquired about it. I really appreciate your help. Cheers!

I think that ceaserstone or marble would compete too much with your tiles and could look odd because of that. In the examples you provide, the one lot of marble stairs are with a very plain tile and the other looks like it matches the floor exactly. Your tiles have a bit of a swirly pattern so unless you chose a very plain stone/marble it would clash IMO. Also, ceasarstone can chip and I don't think it would be a very practical option for stairs. Timber would add a bit of warmth to your whole sleek look while still looking modern, and be something to tie your front door in with so it isn't the only warm looking thing in your whole light coloured area.

I suggest the very first thing to do , would be to decide your budget and what you want to achieve , and to a certain degree what the suburb is like ? If it's the 'worst' house in an upmarket suburb , then $100K or even $200k may really lift its value , but if its in a 'cheaper' suburb , you may over capitalise . Like others , some things I'd look at -- -- Do the gardens , trim the tree , looks more like rank grass along the side of the driveway ? Maybe a white stone garden , with a Yukka ort similar . -- The concrete driveway looks 'drunk' , but that may be because of the shapes it was laid in ? Level it , take the front out to the street , talk to an expert about doing a one-run top coat of concrete . -- Remove the fairy lights , relocate the satelite dish . -- Personally , Id frame upwards on the top of the carport and lounge roof , and also the first floor roof , and put bright 25-30cm tall painted or powder coasted alloy panels -- cover the gutters and 'hide' the solar panels . Paint or coat them whatever colour you like , but I'd go for something like bright yellow or orange or red , mid blue , a crisp green ? -- Someone suggested brown wooden 'louvres' full-length over the upstairs windows . I'd be tempted to go with that idea ( buy 30mmx30mm pine , and a mid brown stain -- 6 or 8 'rails' along that upstairs on the side and front you can see in the pictures . Instead of mid-brown stain , a black/charcoal may suit better , especially if you go with those bright panels . -- Maybe a fence in the same 30 x 30 horizontal wood , same stain colour -- ties the upstairs to the 'ground' level ? Relatively budget , and can be done in several steps , but would 'lift' it no end IMO .

I have a separate guest toilet without windows using a ceiling extractor fan - not a problem. I also have internal cavity sliding doors to bathrooms and toilets and love how they give extra space and options regarding placement of items. Another location alternative for you may be between the cinema room and the kitchen, depending on what you had planned for that extra space in the kitchen. Two metres is a wide hallway, if that is what it is? Ours is 1.3 which is considered wide (as we need to accommodate a wheelchair which has to turn into doorways). An advantage of a very wide hallway is it gives room for extra furniture placement such as bookshelves, linen or other cupboards if needed. I don't see a linen cupboard or pantry cupboard in your plans. Something else to think about is future proofing - try to cover future possibilities with regard to function, as making structural or fittings changes later can be more expensive, and may come at a time when you can least afford it (e.g. injured, disabled, children, aging or other such people visiting your home). Lives change, sometimes over time, sometimes in an instant, and suddenly the doors are not wide enough (especially the toilet door!), or the walls are not strong enough for a weight-bearing rail, and a host of other things. We put 900cm doors as a minimum and it makes life a lot easier, including moving furniture in and out. Universal Design principles are worth a look. Sadly these considerations are currently considered special or optional, although there are moves to change that, so that builders and architects will consider these things as standard.