The latest Office for National Statistics figures show an average UK house price of £226,185, which means one in three buyers are forking out more than £7,530 for every minute they spend, on average, viewing the property.
See also: The hidden costs of buying a house
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A First Direct poll of 2,000 homeowners found 36% had an offer accepted on their current property after just one viewing, while just one in four had visited the property on at least three occasions before making an offer.
It found that younger buyers are more likely to request additional viewings, with 2 in 3 of under the age of 45 checking the property out twice or more before giving a final answer.
That's compared to just 61% of those aged 45 and over.
Regionally, homebuyers in London average the most viewings, at 2.58, while those in East Anglia average the fewest, at 1.88.
Joe Gordon at Firs Direct, said: "Every week thousands of homebuyers are making six-figure decisions based on one quick tour of a property. Unfortunately, a lot of buyers then find they're faced with expensive repair and renovation bills because they hadn't done thorough checks beforehand.
"While the market is moving so fast in some areas it's understandable people feel they need to make a quick decision. But buying a property is the biggest financial commitment most of us will make so it's vital to do your homework.
"Whether you move quickly or take your time, it's always advisable to have your finances in place before you start your property search , which is why first direct mortgage advisers are available seven days a week."