I'm sure there are others that can help on this forum but you may want to check out postings @ commercialdronepilots.com. There is a forum dedicated to construction.
Not talking Thermal just yet, but will look into it as I evolve. Thank you for stepping forward though as I need all the expertise I can get. Happy Holidays Slim!
by sensors do you mean the camera? If So the Zenmuse Z3 with 7x zoom is good for inspections as you can fly at a safe distance and zoom in for inspections. and i have one for sale if interested also. just shoot me a PM