Prague's economy began to recover in the mid-1920s. Construction began on a new stadium for Sokol meets in Strahov, and residential construction began to pick up as well. Municipal growth always had a positive effect on the brewery and on beer consumption, so it is no wonder that Staropramen steadily increased annual production volumes in this period to meet rising demand for beer in the south-west portion of Prague. Construction activity picked up in Ostrava as well, and so here, too, the Ostravar Brewery was successful and prospered.
At the end of the decade, raw materials prices fell and an economic boom was expected. Instead of that, however, came the Great Depression, which affected Ostravar brewery.
Despite all the difficulties, Staropramen Brewery began to be profitable again in this period. It invested in new equipment and transformed itself into a modern industrial enterprise. At this time, it was Staropramen Brewery that became the brewery with the biggest production volume in Czechoslovakia, a position which it held for many years. Between 1933 and 1937 the first phase of an extensive, complete overhaul and upgrade took place and in 1938 the brewery produced 823,317 hecto-litres of beer. One year later, production had risen to 859,561 hecto-litres. It is no wonder that at this time it joined the elite top three breweries in Europe.
But then another war catastrophe came. Capital spending ground to a halt, raw materials inventories were used up, much technical plant was completely run into the ground or was destroyed in the war.