Landlords and other interested parties should visit www.croydon.gov.uk/betterplacetorent where there is a full list of conditions (link below) and a useful FAQ page. There is also a link to the application form which goes live on 1st July and the site confirms that there will be an 'early-bird' discounted rate of £350 for landlords applying prior to the end of September.
https://www.croydon.gov.uk/sites/default/files/articles/downloads/Selective%20licence%20guide.pdf
https://www.croydon.gov.uk/sites/default/files/articles/downloads/Selective%20licence%20guide.pdf