You will find a ton of answers to your questions on these trusted government sites.
Furthermore, below are some hot links that may interest you.
**NEW** Tax-Free First Home Savings Account (FHSA)
This new registered plan would give prospective first-time home buyers the ability to save $40,000 on a tax-free basis, with an annual contribution limit of $8000.
The Home Buyers' Plan (HBP)
CMHC Mortgage Loan Insurance
If you want to buy a home with a down payment of less than 20%, you’ll need mortgage loan
insurance. This protects your lender in case you can’t make your payments.
Home Renovation Financing Options
You have many options for financing home renovations, each with pros and cons. Explore them all to decide which is best for you. Then talk to your lender. They can further explain your options, tell you how much you can borrow and pre-approve your loan.
CMHC Improvement
According to the Mortgage Consumer Survey, 37% of mortgage consumers didn’t know their renovation costs could be added to their mortgage. CMHC Improvement is for homebuyers purchasing an existing home that requires some work or building a new home from the ground up.
Hydro Quebec offers and tax credits
The Québec government and the Transition énergétique Québec offer programs and subsidies to help households reduce their energy consumption. For example, changing an oil furnace to an electric furnace.