Mafia City H5 : Why should I build up my Turf (Upgrade Buildings)?

[Asuna]

Within Mafia City, you are the leader of a group of gangs. Under your rule, the gang will expand in power, you will eventually become the revered Boss!

Mafia City H5 : Why should I build up my Turf (Upgrade Buildings)?

Mansion is a base for you to build your forces. Building up your Mansion is the most fundamental way to increase your power.All features available to the Mansion (including the upgrade option) can be seen by clicking on the Mansion. 

Within the upgrade option are the building’s requirement as well as the resources requirements. Meet those requirements and you’ll be able to upgrade the building.
To build a new building, just click on an empty plot. You can arrange the location and number of building in accordance to your own preference.
Greenish plots are undeveloped plots, by spending some resources you’ll be able to unlock new plots for more buildings.