Ok you have video of the site prior to starting, how will you document what you have done? Make a timelapse montage! Take the time to fly a drone over the site and document milestones either by time (each week or day), or project milestones along the way.
Once again, any pictures or video you shoot will be very easy to share. Plus, delays will be very easy to identify and can be addressed before they get out of hand.
When everyone can track a construction project every step of the way, everyone is forced to be transparent and accountable.
When you pack up your cares and woes and settle final bill, take some time to document what got done and what did not.
If you are a construction company, this will make an excellent addition to your portfolio because aerial shots are still relatively new and stand out.
If you are a client, it helps to have before, during, and after pictures because showing what got done can be just as valuable as showing what did not get done so you know which areas will need work in the future.
Using drones for monitoring construction projects has both aesthetic and practical advantages and you will no doubt see more and more drones at work sites in the coming years. The day is coming when you can monitor the construction of your house, in real time, from work, all via drone.