Brisbane City Council gave a Fortitude Valley bar advice on how to construct a 9.5-metre wall without telling the neighbours it would be one metre away from their windows and leave them in permanent darkness.

Eight apartments are now covered by the specially-designed "acoustic wall", which is meant to block out sound so residents are less likely to make noise complaints against Kerbside and Fringe Bar.

Fringe Bar's "acoustic wall" is blocking Ben Anderson's apartment windows. Credit:Kristian Silva

Planning documents reveal that council staffers had discussions with Fitzgibbons Hotels, the owner of Fringe Bar and Kerbside, about how they could lodge a planning application and avoid any consultation.

The wall was put up late last year and took about three weeks to be constructed.