I've finally cracked on this one. Reno (capitalised) is a town in Nevada, whilst if one is trying to use the barstardisation of the word 'renovation', i.e. 'reno', and it's not at the beginning of a sentence, it should not, in any place anywhere in the universe, be capitalised.
Thank you.
I realise this post will change nothing and I will still see things like 'How much will my Reno of my 3 bedroom house cost?' but, oh well, I've at least said it. 😂