Expert: Dan Griffin - 3/6/2009

Question
Dan,

I'm contemplating purchasing a home however I would need to add an addition for it to suit my needs. The home is made out of precast concrete walls, and I would like to cut out a section starting in the rear left moving 17-19ft towards the middle.

I understand parts of the wall would be load bearing, but my question is can this be done? Also would I need multiple columns for support or a header beam?

Answer
Brad, the simple answer is yes.  Yes, walls can be opened and moved - some cost more than others.  Yes, iF you take away a load bearing wall or portion of one, something structural has to take its place.  It is quite unusual to have precast concrete residential walls and you will need to determine what is carrying the roof loads.  Most outside walls also function as shear walls, giving the structure wind resistance.  Yes, this problem needs to be addressed.

YOur best solution would be to work with a structural engineer who can see it in person for particulars.