On average, closing costs make up two to five percent of the purchase price of a home. Two percent doesn't seem like a high number, until you remember that houses are pretty expensive.With the average home price at $152,000, that means you can expect to pay an extra $3,000 to $7,600.And that's just on average.This can be quite a surprise to new homeowners, so here's a round-up of closing costs to watch out for.n average, closing costs make up two to five percent of the purchase price of a home. Two percent doesn't seem like a high number, until you remember that houses are pretty expensive.