Y
If you are so inclined, go in ahead of time and ask for permission. The Contractor(s) should have signs on the gate/fence so you know who to reach out to.
You could just walk into the construction onsite office, hand them a card and inform them that you are an FAA Licensed Commercial sUAS Pilot and will be flying to record the project. If you have a safety vest, wear it in there.
View attachment 145572
Ask if there any areas of interest and restrictions. If they ask who hired you, say 'no one - yet. Are you offering?' If they say 'no flying, no photos or video' then thank them and leave.
Be sure and proud. Expect acceptance but prepare for rejection.
However, you can get most or all of the necessary images without asking by flying over the perimeter (along the fence-line) or, as necessary, go out on Sunday (if the site totally or partially shuts down) to avoid flying over people.
Nobody owns the sky/space above their property, so as a rule, no permission is required - except directly over people.
I find that Contractors are usually proud that someone is getting aerials of the project and often curious as to which contractor or agency hired you.
Take solace in the fact that they can kill you but they can't eat you.