There are many useful and informative resources that can help you plan for any real estate purchase. Here are just a few I can recommend to you.

Realtor.ca Mortgage Calculator

How much house can you afford? What sort of a mortgage are you looking at for that dream house? What are the land transfer taxes going to be? Realtor.ca has some great calculators to help you with all of this.

https://www.realtor.ca/Residential/calculator.aspx