May 4, 2011 – (RealEstateRama) – A: Costs for construction of both vary across the United States. The cost for constructing a safe room which can double as a master closet, bathroom, or utility room, inside a new home or small business can range from approximately $4,500 to $8,500. This budget would provide an 8-foot by 8-foot safe room. A 14-foot by 14-foot safe room could cost $15,000 to $25,000.
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