Got you. Sadly, power does not equate to range. I’ll use an example. My home is just under a mile from my office. Here in the UK, I sell and hire radios. We have similar bands available here, so your Baofeng here could operate legally on the VHF and UHF ham bands. As I understand the US situation, in a disaster situation, you could potentially talk to hams - if that would save lives when people are in a genuine life or death situation, otherwise - you need a licence. Same here in the UK in practical terms. In normal circumstances, operating on ham bands is out. You could put your radio on the GMRS frequencies, and the FRS etc etc - but you would be operating illegally - I will leave the morals and ethics of that for a business user to you. In the UK, your radio would be licencable on our Government’s business frequencies.
All that said - none of my radios I have in my hire stock, including some rated at 10W can get from my office to my home. Radio to radio is what is called line of sight. The rule being that if both ends had a pair of mega powerful binoculars and you could see each other, the radio would work. I have chatted to an astronaut in the old US space station - using a 3W hand held radio. As he came over the horizon, umpteen thousand feet up, he could have seen me with the hypothetical mega binoculars. Radio waves do not penetrate hills, or obstacles very well at all. So any buildings will reduce the signal so much that ranges of a few hundred yards are typical. A building site will probably work for handhelds, but ten miles is rarely going to work. One mile is doubtful in the real world. If you are on a mountain top, and somebody is on another, twenty miles away, with a valley between - that will work. At the bottom of a valley to the next valley won’t.
It is down to topography and obstacles. To increase range, most businesses would install repeaters - a device with an antenna up high, in the centre of an area. In my town in the harbour is a very tall grain silo. On the top is a repeater. Handheld radios can get into that repeater from at least 8 miles away in one direction, and 20 in another - because of hills.
You need experts to plan and coordinate good radio systems. My 6 year old grandson can turn a radio on and press a button to speak. Typical builder on sites want reliable comms - even when the radio is in their pocket - and in their pocket, with the antenna up against their body the range is even more reduced. The radios you have bought are hobbyist radios, made to fiddle - totally (in my humble opinion) useless for serious business activity. They will get broken very quickly, almost certainly fiddled with - those buttons are very tempting during lunch breaks.
Seriously - call the two way radio people and have a chat about what you want to do. Your radios are budget end products - perfectly decent - for hams and enthusiasts. They cannot take the abuse business users will gove them, and if you have had to already unlock them to get around your FCC regulations, you bought the wrong products. As I said - building sites and construction do not need any of the features people buy those Baofengs for. If you are not interested in fiddling with radios, they’re the wromng product. hand held radios of ANY price point can only have long ranges with repeaters and high antennas and frequency coordination so somebody doesn’t interfere with you. Let’s say you find just the spot where you can have a chat with somebody ten miles away. If either of you step sideways a few feet, the working radios suddenly aren’t! If the person the other end has the radio in their pocket, instead of held up clearly in the open, there is little point calling them - it won’t work. Any radio that has a distance on the box should be viewed very suspiciously - 8W means nothing at all. Well, it means it’d 5 watts more than 3 Watts, runs the battery down quicker and is probably heavier. distance is just a gamble. Sorry - but typically quoted ranges are the absolute best case. I can’t manage 1 mile, and my house is actually on a hill!