If you're getting a mortgage (loan) to buy the property, it will depend on the type of loan you're getting. Simply ask your bank or private lender for options.
It's a myth that you need 20% down. There are loan options that exist for people with lower credit, great credit, and first time buyers that require as little as 3% down. So for a $200,000 home, that's only $6,000. For veterans and certain professions you may be able to get a loan with 0% down.
There are additional costs that go along with buying a home, such as obtaining title insurance, mortgage processing fees, home inspections, appraisals, property taxes, etc. that can add a few thousand dollars or more. This is in addition to your down payment. This is why it's extremely important to talk to your bank or lender about your financial situation before you start looking for a home. They will be able to tell you exactly what you need so you can prepare to get the home you want.
I have a few great lender options I can recommend if you're interested! Just give me a call at 248-735-2797 or email me at email@example.com to get started.