Construction Costs rules of thumb

[mshields]

Would be interested in feedback on electrical construction cost rules of thumb. For example, we recently did a project that involved renovation of existing space as well as a new addition. We applied 25 dollars a square foot for the renovated area's and 50 dollars a square foot for the new.

This was, not insignificantly, an emergency room.

How about a commercial building, renovated vs new?

Medical Office building?

Thanks,

Mike

 

[USMC1302]

Mike:
Don't really have any wisdom for you on this, but I would think the number for renovated would be higher(or a higher contingency percentage). New construction should normally be more straightforward, renovations with existing conditions/limitations always seem to have the "gotchas"