Countrywide said Alison Platt had resigned as chief executive and would be replaced in the interim by Peter Long, who would become executive chairman.
"Since joining in 2014 I have worked hard, within a difficult market, to structure a fragmented business into one set for success," Platt said.
"I believe those actions will serve Countrywide well in the future. However, the time is now right for me to step aside. I look forward to seeing the business build back and return to growth."
At 1:49pm: (LON:CWD) Countrywide Plc share price was +0.9p at 100.9p