Calloway and others (plaintiffs) brought a class-action suit against the City of Reno (defendant) and various contractors and subcontractors (defendants), claiming that their attached homes were built with defective materials and framing, causing water damage that resulted from rain and snow. Calloway contended that the contractors were liable for damages based upon various tort and contract theories, including negligence, strict liability, and breach of express and implied warranties. The contractors moved for summary judgment. The court granted the motion, concluding that Calloway could not recover based upon negligence or other tort theories for purely economic losses in the absence of proven personal injury or damage to other property. Calloway appealed.