Yes, I wondered this. Is class so important to you OP? I think that you'd find that many people who live in relatively expensive houses don't give a damn about how they are perceived.
I live alone in a 2 bed terrace within walking distance to the centre of one of the most beautiful towns in the UK. It cost me 400k. So perhaps because it is cheaper then it could be perceived as working class, if you really wanted to try to categorise. It is anything but working class. The love that I give it, the art that I choose when I can afford it, the music (which I can always afford), the furniture, the colours, make people smile, and to visit again and again, and I don't spend a huge fortune on it. Just a very small one.
You do not gain perceived class status by buying a large house. To be honest though, who gives a damn about class? I don't.