Every major city has some kind of de-construction re-cycling store.
Rather than just throwing things away when you renovate, they come in and take it apart for you and take it away for you. That saves you the money of demolition.
Then they put it up for sale, providing lots of useful and valuable treasures at discount prices.
The Home Again store in Toronto even goes a step further and gives a portion of the resale money to charity, and you get a charity deduction in return.