Rivovation

One of the many advantages of English is that you can just make up a word if you want. Heartful is the classical example, but this real estate development company in the southwestern suburbs of Tokyo has been uniquely creative: "rivovation", as far as I can ascertain, is used nowhere in the known universe outside of this sign (added and now outside of this blog post).

Their website is at http://www.lattrait.co.jp/, but at the time of writing devoid of promising Engrish.