British Waterways owns a 50 per cent stake in the partnership with Amec and the Igloo Regeneration Fund, and plans to reinvest income generated by the scheme for the improvement of the UK water network.
All sites are still at planning stage, with the Manchester development the first to go on sale this month.
The agency will promote the developments via local media and trade and consumer press. It will also handle launch events and public consultation campaigns.
MD Andrew Spinoza said: 'The development has an emphasis on family housing and communities; there will be limited opportunity for investor purchases.'
Isis Waterside Regeneration chief executive Mark Ryder said: 'We require a robust PR programme to drive home how we are different to other developers.'