The local authority believes demand for allotments is so high that food-growing areas in commercial and residential buildings will be a selling point. The planning advice note, which enshrines the policy, offers best practice tips.
Cabinet councillor for regeneration Amy Kennedy said: "We already have strategies aimed at encouraging food growing and releasing more space for people to use. So it makes sense to see how every new development can contribute to these goals."
Green space consultancy the Next Field helped Brighton audit its green space last autumn and noted pressure on the city's open spaces.
"More local authorities are seeking to secure community and private space for growing. Conventionally, this would be through adopting residential standards for allotments linked to housing proposals. I am not surprised the council is leading the way," said director Peter Wilkinson.
Parks consultant Sid Sullivan added: "This is a great opportunity for green space services to get in touch with their planners to offer advice and form relationships with developers. It's the first such advice I've come across and it's very exciting."