Pottsy. This one for you!

I reckon you are focussing on the wrong part -- the boards up the roof , and the gutters , look to be a grey or possibly even a mauve ? It makes the yellowish white look worse IMO . So my first step would be to do that board , and the gutters and around those upper windows in a bright red -- that will make it look more 'classic' , but also contrast more against the 'white' , and it will probably look okay .

If it still looks too yellowy , and/or it needs doing , then do it , but I' with you -- too crisp white will look like an advertising sign , whereas an off-white with a slight pink or yellow tinge will look a lot warmer and lived-in IMO . But I'd do the red first .

I would use the brighter white (not Lexicon, too harsh for heritage) on the pieces of wooden trim that would cost a fortune to do these days. All the fancy wood pieces. These are what you should be highlighting.

Thanks so much for your feedback and input. It is very helpful. The gutters and boards near teh roof are a red/grey in reall life, however they do look more mauve in this photo. I think I want to stear away from red, and go towards a white/neutral colour scheme.

Does anyone have an opininon on painting the 'stripe' on the lower level the warmer white (snowy mountain quarter), a different shade to the windows (vivid white)? Currently they are both the cream colour, and I don'tknow if two different colours wouldlook odd. On other houses I have noticed that teh 'stripe' is often a contrasting brick, or a third colour is introduced.

thanks again, Kate

Your house is gorgeous. If it is a heritage item or you are in a heritage conservation area, your local council will have a heritage advisor who can assist with advice. In NSW, it is a free service and they can do a colour scheme up for you or help with which elements should be lighter/darker etc

Thanks rocksfam, I will look into that. Very helpful.

You asked about painting the 'stripe' , and I was going to mention it in my post above .

Visually , that existing hip-line 'stripe' looks a bit funny , it is pretty non-existent on the left , then sort of alternates between red and white .

So that seems a problem to me , because I was going to suggest either 'just' painting that 100mm or so stripe in black , or preferably getting a slightly raised render 'hip line' , either in a black render , or painted afterwoods .

BUT as you don't want to do red around the top , I think that would look like a dogs breakfast -- red and white with a black stripe is pure 1960's style and class -- red , white , mauve or grey , and black would look disjointed IMO .

thanks all for your help.