It should be relatively simple to build software-wise. The hard part is (if not always) figuring out what software/features to build that fit the use case.

Ain’t that the truth. But I can’t imagine the tech stack being that complex? With so many exchanges and tools it’s quite easy to go from fiat to BTC. 

BlokchainB

Construction_and_Engineering

Report Finds Late Payments, Not Just Weather, Behind Many Construction Delay

> Just imagine starting a general contracting firm and implementing Bitcoin payments.

There was a general contractor in Austin attempting to build this. I haven't seen him around in a minute. 

I loved the idea (especially because he could be his first customer). I think he had trouble finding a reliable engineer. Bitcoin tends to have a lot of shiny object syndrome devs.