The Ministry of Justice says it takes private landlords an average of 22.5 weeks from making a repossession claim to the courts to it actually happening.
This is up from 21.6 weeks since the beginning of the year.
The Residential Landlords Association says this shows the current system is inadequate.
John Stewart, RLA policy manager, says: “Figures show that the courts are unable to cope when landlords seek to repossess properties for legitimate reasons.
“With proposals to scrap Section 21 repossessions set to lead to a significant increase in cases brought to the courts, it is now a matter of urgency that the government brings forward its plans for court reform.
“This requires a fully funded, properly staffed, dedicated housing court that can bring rapid justice for landlords and tenants. Tinkering with the existing system will not be good enough.”