$250.00-$400.00 a square foot
Very detailed and intricate layout wired and turnkey with trains , using a 20ft X 20 ft layout 1000-2000 hrs $40 per hour for craftsman quality work ,the labor $40,000-$80,000 plus top of the line trains and scenery $20,000 or more if you want custom laser cut one off buildings from photos , I know of one builder who charges $65 per hour , per man so if you have 3 guys working , all on it at the same time that's $195 an hour . Considering auto repair shop rates are $85-100 per hr. If you have a shop with a/c all the equipment , the space to house a 400-500 sq ft layout and space for the equipment you need atleast 2000 sq ft , plus insurance , workers comp , electric , water , internet, income taxes .This is standard overhead that will be required for a real pro operation . Layouts like this have to be made off site of the place , so it needs to be designed to come apart and go back together and fit in the room , go thru doorways around corners and then reassembled . You need auto-cad to do it right . To do it right now in todays market figure $65 per hour .
hard to build anything worth paying for of quality for less than $100,000.00