From this page you can view all of the buildings that you have already built, the total number of buildings in production, and also queue up more buildings to be constructed. Buildings are constructed on a 12 hour time table. If you construct just 6 of a building, then they will come in like this:

0 0 0 0 0 0 1 1 1 1 1 1

(the first six zeros represent the first six hours after you started the construction, meaning it will be at least six hours until you see the first building.)

If you chose to construct 12 buildings, the production would look like this:

1 1 1 1 1 1 1 1 1 1 1 1.

(This shows that the very next hour change you will get a building) This holds true in intervals of 12, so 36 buildings would give you

3 3 3 3 3 3 3 3 3 3 3 3.

A brief description of each building is shown at the bottom of the page. What it does not tell you is that building percentages are actually based on the total number of buildings that you have, and not based on the total land or buildings in construction.