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Cost Increase for Classified Area

Cost Increase for Classified Area

Cost Increase for Classified Area

I posted this in a different section, maybe I'll get more luck here...

I'm working on the design of two separate rooms, one is class 1 div 1, the other is class 2 div 2. Right now I'm going through the design proposal (layout, flowrates, PHA, etc), however I need to understand the cost before it gets too far along.

Does anyone know of good references for approximating the room/building cost, especially for a classified area? I've seen some guides/books on general plant costing, but I'm not sure how to add on the cost for meeting nfpa/nec standards. I've heard that controls are usually +40%, and the increase in room cost could be x2 or x3?

Thanks in advance for any help.

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