Slum landlord Vispasp Sarkari must pay £1.5 million or face nine years in jail for cramming tenants into shabby box rooms in disgusting and degrading condition.
Sarkari, 56, was convicted of breaking planning rules by converting homes into tiny bedsits without permission.
Some families were charged £650 a month to rent a room in a home with unsanitary bathrooms and kitchens that were plagued by rats.
Judge Lana Wood made the order at Harrow Crown Court, describing the offences as “a flagrant abuse” of planning law.
Brent Council has tried to tackle Sarkari several times.
In 2017, he was fined for shoehorning 27 people into a four bedroom semi-converted into seven flats in Wembley, North London.
The council found six families living in the property that was riddled with damp, infested with cockroaches and littered with rat droppings.
The most recent activity related to five more homes illegally converted into bedsits.
“Justice means taking the ill-gotten gains off this slumlord millionaire,” said Cllr Keith Ferry, Harrow’s cabinet member for planning, speaking after the sentence was handed down. “This is a man who thought he couldn’t be stopped. He was wrong and, thanks to our work with Brent Council, Sarkari’s criminal venture is finished.”
In 2008, Sarkari was fined £2,800 for breaking fire safety laws in rented homes, and £5,000 in 2009 for ignoring a planning enforcement notice relating to another property in Wembley.
In 2012, a confiscation order of more than £300,000 was made against him under the Proceeds of Crime Act for breaking planning law, which he paid in full.
In 2015, Sarkari was again fined £10,000 and ordered to carry out 150 hours of community service over gas safety breaches at a property in Wembley.
In December 2017, he was fined £13,400 for shared house licensing offences.
His fines, confiscation orders and legal costs add up to £1,844,342.