BBC Verify has looked at the scale of the housing challenge facing Burnham when he becomes PM.

Millions of people are facing unaffordable rents, long waits for social housing, or are priced out of the market when they are ready to buy. The average house price in England was £300,000 last year - almost eight times average earnings. The Labour government has pledged to build 1.5 million new homes in England over the course of this Parliament - but it is already falling behind on this target. Andy Burnham is credited by some people with overseeing a building boom in Manchester as mayor of the Greater Manchester Combined Authority, although critics say there remain serious housing problems in the city region. BBC Verify has looked at the scale of the housing challenge facing Burnham once he becomes PM, and examined whether there is anything we can learn from his record as mayor to see how he might tackle it. Burnham has said , externalthe UK is in the grip of a "housing crisis" and he wants to deliver "the biggest council house building programme since the post-war period" - but has not provided details on exactly what this means. Keir Starmer's government had already pledged £39bn, external to fund the construction of 300,000 new "social and affordable houses" over the course of 10 years during the 2025 Spending Review, and said this money would "reinvigorate" council housebuilding. That would equate to around 30,000 new homes a year, but the majority of those were expected to be social housing built by not-for-profit housing associations using government grants.