A number of factors, such as the cost of the house and the type of mortgage you get, are important here.
In general, you need to have enough money to cover three costs:

1. earnest money – the deposit you make on the home;
2. the down payment, a percentage of the cost of the home,
3. the costs associated with processing the paperwork to buy a house.

When you make an offer on a home, your real estate broker will put your earnest money into an escrow account. If your offer is accepted, the earnest money will be applied to the down payment or closing costs.

Closing costs paid at settlement – average 3-4% of the price of your home.