New Construction Ceiling Fan Box
Consider installing the right supports in all rooms where there is even a remote likelihood a ceiling fan will be installed in the future.
This will cost almost nothing to do as your home is being built but if you choose wait it will add unnecessary work and expense later.
Have a new construction ceiling fan box installed where current or future ceiling fans will be mounted. This box and its added anchors will support the extra weight of the fan motor. Without the proper supports, the fan will likely fall to the floor.
Also consider running the proper cable needed for a fan even if you don’t plan immediately to install one. The cable has the added wires to have independent control of the light and fan operation.
Your Dr. Shock electrician can install the necessary wiring for you.