Need USP help, please.

Seems you have a foundation for some solid growth.

One thing I focused in on was your use of in house workers
meaning YOU PAY for any liability those workers might cause.

Now why might you do that?

Maybe because your workers are so skilled that it would
actually you COST you more money to sub contract out
to unskilled uncaring who knows where they got them from
construction workers who get a lot of things wrong so the
sub-contractor forced to carry high cost insurance policies raises
their rates accordingly.

(black belt hint: can you come out and say you hire legal residents of
the US? That's a USP for someone in the
construction industry plus it's a bold one 'cus just about everyone
else will be too scared to say such a thing.)

But even if you can't or don't want to the fact that you have
in-house workers i think the average business could care less
unless it means your workers are more skilled or you can
get more jobs done on time at cost because you have more control
on when and what work gets done.

(Example: ARe you the only builder with a 99.7% on time no cost overrun
completion rate in the town of Anywhere USA)

Maybe that's another USP that might work.

Plus seem like you have a lot of backend profit centers from recommending
architects, service companies, construction upgrades to buildings you've already worked on, referrrals from past customers. Lots of profits centers.

Think about hiring a guy like Gordon Alexander to write some advertising to help you tap into those other profit centers.

Finally check out this archive I've posted some links (other's have too) to great sites that help you come up with more USP and business naming ideas.