I wasn't trying to lock them out but at night we always keep our gate closed. When they come, I have to park our cars out on the road due to open up space. I have also given the builder the combination to the control box for the gate but there was only once when they used it. The builder called me with people trying to get in unannounced as usual and I repeated the combination I had given him. But when I looked at the cameras, the workers had opened up the box inside the fence that contains all the electronics for the gate, presumably with the intention of bypassing the control.
Then they pushed on the gate trying to force it open. Came to our porch and rang the doorbell a couple of times, got back in the truck when they must have called the builder, got back out and opened the box with the controls.
But since there is no project manager overseeing the job and since the builder never comes out here (unless it's payday) I prefer to be here to keep an eye on what it going on. I can't imagine how this thing would have ever gotten built without me being here almost every time they came. If there had been detailed engineering drawings, etc. I could see it happening but in my case, we were going off my sketch and what I had in my head, had conduits to move, water lines to move, and septic line from the house to move.
I've seen others post these elaborate drawings and specs, or have to get all this engineering work done. In our case, little government oversite (which I prefer) with the exception of having to get a authorization from the health dept for the septic (which I had to show them where it was due to no records), a building permit for the pool (the only thing they will inspect is the bonding and primary electrical connections), and a permit for the pool house (which in my county many will skip the permit and just do what they want).