Southwark Crown Court heard Nuruazzaman Miah, from north west London, had described a set of luxury apartments in such glowing terms that his wealthy victims did not even ask to see their future homes before putting down a payment.
His "customers" – who were given fake keys and signed tenancy agreements – only became aware of the scam when arrived to their new homes to find their keys did not work and the apartments were already occupied.
Police arrested Mr Miah on three counts of "fraud by misrepresentation". He was jailed for eight months.
None of the missing £10,000 was recovered.