Renters are being saddled with unexpected rental costs as landlords charge them for maintenance repairs and flood damage without giving any warning.
Research from Endsleigh shows over on in ten (14 per cent) tenants are being charged unexpected costs averaging £165.41 per person each year.
Seventy per cent of those surveyed said they did not agree with the landlords over the charges.
The survey of more than 2,000 tenants found they were expected to fork out for boiler repairs, flood damage and property maintenance.
Nearly half (47 per cent) said they did not forsee yearly rent rises, and 45 per cent said they did not know what their responsibilities were regarding tenancy agreements.
David Hadden, head of property, Endsleigh Insurance, said: "Though the research could paint a picture of discontent in the worlds of both landlords and tenants, the positives far outweigh the worries.
"Noticing the number of landlords surveyed willing to go the extra mile for their tenants is reassuring to say the least, highlighting the fact that they are valued, and listened to.
"Inevitably, costs will continue to be held high on the tenants' agenda, and though unexpected changes may occur in some cases, hearing that almost a third of landlords will absorb these is very encouraging."