BigHospitality's sister site MCA reports that the speakeasy-inspired bar will open on 24 Ship Street, above Dos Sombreros Mexican restaurant.
L’Atelier du Vin is led by Steve Pineau, a former bar manager of Hotel du Vin, and was conceived in collaboration with Master of Wine Gerard Basset OBE, who died earlier this year.
It stocks 700 wines, including 250 champagnes, 300 spirit varieties.
The business originally launched in Brighton’s Kensington Gardens in 2018, before relocating to St George Place.
It opened a second site on the former Coggings & Co restaurant in the city’s Seven Dials earlier this year.
Pineau, whose partner is fellow Hotel du Vin alumni Dimitri Mesnard, also hopes to open in the city’s Kemp Town and Hove areas, before moving to Tunbridge Wells and Cambridge.
He has previously told MCA the premium offering was focussed on big ticket purchases, rather than volume, with sommeliers sent on work experience to Michelin starred restaurants such as La Gavroche.
The concept won best newcomer at BigHospitality and MCA’s sister title The Morning Advertiser’s UK Top 50 Cocktail Bars this year.