This was blamed on the tenant fees ban.
The number of tenants experiencing rent hikes hit a record high this year, NAEA Propertymark has found.
This was up from an average of 26% each month in 2018 to 46% each month this year.
This is due to the impact of the tenant fees ban with 64% of tenants experiencing rent increases in August, the highest figure seen this year.
David Cox, chief executive at ARLA Propertymark, said: “It’s no surprise that tenants have suffered intense rent increases this year.
“We predicted this would happen as soon as the government announced a ban on tenant fees, and since the ban came into force in June, rents costs have continued to spiral.”
As landlords continued to feel the pinch, the number of buy-to-let investors selling their properties remained high, at an average of four in 2019.
In April, the figure spiked to five per branch.
Cox added: “Additionally, due to the significant amount of legislation that landlords face, this year they have continued to exit the market, which coupled with Brexit uncertainty and the looming General Election has left the sector in a state of despair.
“Unfortunately, next year could go the same way, unless something is done to make the sector a more attractive investment.”
The supply of rental accommodation increased in 2019, from 187 on average per branch in 2018 to 197 this year.
It reached an annual high in March, when letting agents were managing 203 properties per branch.
Agents reported an increased number of prospective tenants searching for homes in August, when 76 were recorded per branch, compared to 73 on average across the year.