In considering the footings for your architectural-house-plan, there are a few things you need to think about before starting your footings setup.
Brick, stone or rock require support from the foundation and so forms for footings will be a wider concrete footings and foundations which will have to be poured when using any of them.
If you are using faux rock, brick, or stone there are different requirements. Since faux products are lighter in weight, generally they require very little support from the foundation.
There are some very realistic looking materials that many home builders are using today even though they build a simple house plan.
Your concrete work will be done in several pours in building your home plan.
Typically, the footings & foundation of your house plan will be done by one contractor in two pours. The first pour is the footings. The above picture shows the footings forms for a basement and garage which is on the main level.
More footings forms
If your cement contractor has a good crew they can have the footings set up by noon, be inspected by the city inspector, and have your footings poured all in one day.
To locate concrete subs, you can look in the yellow pages under Concrete Construction, or Concrete Contractors, or you might google for the same with a comma, and then your area and state.