Ed Miliband is expected to point out that 3.6 million households - including one million with children - are now privately-rented accomodation.
"We cannot have two nations divided between those who own their own homes and those who rent", the Labour leader will say.
"There are too many rogue landlords and agencies either providing accommodation which is unfit or ripping off their tenants", he is set to add.
More top news
Three women and three girls were reportedly shot dead because they were trailing 100 metres behind IS fighters.
Building a third runway at Heathrow was the most controversial of the three expansion options, so why is it going ahead?
The body of toddler Norma Dale was found dumped on wasteland near her home in 1946 with one of her red shoes missing.