Roberts, now 78, was handed a life sentence in 1966. His 30-year minimum tariff expired 18 years ago.
London is on track to see 570,000 new homes in the next 10 years, more than enough to house the city's growing population, according to new research by London estate agents Stirling Ackroyd.
Hotspots in Southwark, Tower Hamlets, Islington and Hackney are set to lead home developments.
A man who was at the scene of the murder of three unarmed policemen has told ITV News it is a "disgrace" that one of the men responsible for their murders is being released from prison.
Glen Hazell, who was 11, was playing with friends in Shepherd's Bush when Harry Roberts and two associates opened fire on the officers in 1966.
The Parole Board today announced that Roberts, who was handed a life sentence, will be released after serving 48 years, a decision that has sparked fury among police groups.
"I don't think he should be allowed anywhere near the public...it's a disgrace," he told ITV News Senior Correspondent Emma Murphy.
A public memorial service for Alice Gross will be held next month, her family have announced, as they paid tribute to the support of local people in Hanwell.
ITV News Reporter Sejal Karia reports: