Guide on commercial lots for businesses and comapnies
The other half, apart from the residential aspect, of World Number 2 is commerce
Companies will be found all over the maps, as well as commercial buildings that can be bought by businesses
The most common building type is the 
which is a small commercial lots
The greenish blue color indicates that it is owned by a company
Empty small commercial lots will look like this 
and can be purchased
To buy a commercial lot, simply hover over the icon, click purchase, and complete the Square transaction
After, head to the USERS page on the navigation bar
There are several other commercial building lots that can be found all over some cities
These medium sized building 
will usually be found in clusters of other small and medium commercial lots
Look towards more densely populated business districts and you are bound to come across medium and large office buildings
On the maps, 
they will be denoted by icons
Any company can buy any commercial building, but a good correlation to size of company vs. building type would be ideal
More urban areas along with business districts are constantly growing in World Number 2