No-one responded to the amnesty, but five homes have since been recovered
An amnesty for council tenants illegally subletting their homes failed to generate a single response.
Slough Borough Council offered subletters the chance to hand back their keys in March but no-one replied.
The authority said it had since begun a crackdown, recovering five homes so far.
A spokesman said a total of 30 homes had been recovered in the last three years, with one tenant prosecuted and fined £16,000.
Deputy council leader James Swindlehurst said: "It costs us about £20,000 a year to put a family up in temporary accommodation when they could otherwise be housed in a council property.
"With nearly 2,000 households on our waiting list, it's crucial we do everything we can to get back properties from people who don't need them and give them to those who genuinely do."
