Gasim bey was the first among the Caucasians who worked in governmental and public organizations in the sphere of architecture and urban planning.

His skills in the planning of Baku ravished the Russian and European architects.

All streets in Baku have been laid by the architect stepwise with regard to a relief and topography of the locality, its hills and slopes.

He worked out a structure of urban gardens near seafront, which also exist even at the present days.

His student Gafar Ismayilov has built more than hundred one- and two-storeyed residential houses, many stores, mosques and a bathhouse.