The Royal Borough of Greenwich has asked developer Development Securities to apologise for the advert for homes in the new Cross Quarter Development in Abbey Wood.
The advert, which appeared on the website of estate agent Fraser and Co ahead of a launch in Hong Kong, described the building as "a fully private block with no social housing".
The council said the advert is "appalling" and "out of touch", adding that the majority of the affordable units will be in the second phase of the development, which will be family housing.
Leader of the Royal Borough of Greenwich councilor, Denise Hyland, said: "As a council, we are acutely aware of the need to provide more social housing for families in our borough and this scheme is an example of where we are doing just that."
A spokesman on behalf of Development Securities and co-developer Hurlington said that Abbey Tower is one part of a major redevelopment scheme.
"The project will deliver 216 new homes, of which 11 per cent will be affordable as approved and adopted by the formal planning process which took into account the wider area when giving consideration to the requirement for affordable homes," he said.
"The 32 apartment Abbey Tower is just the first phase of this development and it is being marketed to a wide range of audiences, starting with a launch in London to give the local market the first opportunity to buy at the scheme."
A Royal Borough of Greenwich planning report into the application for the overall scheme said it was proposed that 36 of the units would be affordable, comprising 20 intermediate units and 16 social rented units.