House and flat sales plummeted by nearly two-thirds last month after buyers rushed to beat the stamp duty deadline.
The provisional seasonally adjusted estimate of residential transactions in July was 73,740, or 62.8% lower than in June when it jumped to 198,400, according to HM Revenue & Customs.
The non-seasonally adjusted figure for July, 82,110, was well-below the average for the first half of the year of 145,000 a month.