Here in Canada there is really no such thing as rent to own homes. People watch TV shows based in the USA and get the impression that they can buy a 800k home for 185k or they can buy a home and pay $1,000 per month in some kind of rent to own deal.
Well that is a myth. In order to do a rent to own one must find an investor who first will buy the home. Then that investor must be willing to do a rent to own with someone who usually cannot afford their own mortgage. That is risky for the investor.
The proper way to purchase a home is to get yourself pre-qualified for a mortgage. You can go to the bank or to a mortgage broker. Once you are approved and know how much home you can afford, you work with a real estate agent who will help you find your home.