Administrator KPMG has appointed property firm Christie & Co to market the portfolio, which includes leasehold sites that previously traded as Jamie’s Italian, Barbecoa and Fifteen London.
Eight are situated within central and greater London, while 12 are in major cities such as Brighton, Birmingham, and Edinburgh.
The Jamie’s Italian restaurants in Leeds and London's Islington are not listed among the portfolio as it is understood discussions over their sale are already underway.
At the top end offers in excess of £400,000 are being invited for the leasehold of Jamie’s Italian Piccadilly on London's Denman Street, while £300,000 is sought for its Cambridge location.
The sites are available on a group, sub group or individual basis. Christie & Co says it expects to receive strong interest over the next week with best bids due by 30 May.
“This provides a rare opportunity for restaurant operators to acquire extremely well-located premises in city centre locations,” says Jamie Harvie-Austin, director at Christie & Co.
Only Oliver’s three sites at Gatwick Airport continue to trade in administration, as these are understood to be particularly profitable.
The chef said this week he was "devastated" at the collapse of the company, which saw the loss of 1,000 jobs.