I just finished a 39x48x14. Heated slab. 4ftx10" footing. 6" floor. 2x6 stud on 2' C. Trusses every 4ft. 1ft eave overhang. 18" gable overhang. Panel liner ceiling. OSB wall liner. Batt wall insulation R19. Blown fiberglass ceiling R49. Conduit wiring. 200A service. LED 4ft ceiling lighting. 4 post lift. Two 12x12ft overheads. Two 36" walk-ins. Four 4x4 windows. 12'x8' bathroom containing sink, stool, floor heat hardware and air compressor.
Love the floor heat but as others have mentioned, takes diligent planning!!!! Friend of mine just finished a very large shop with one 4 post and three 2 post lifts. Drilled into two circuits of his floor heat setting the lifts. I'm using a Rinnai tankless water heater for source. Operates sinfully cheap.
Don't short yourself on lighting.
Don't short yourself on wiring of any kind.
Don't short yourself on insulation. Build a solid, tight building.
You'll get exactly what you invest into this building. Invest cheaply and you'll get a cheap building.
I have $42 per sq ft in my building.
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