deconstruction. For deconstruction to be cost effective and competitive with traditional

demolition and disposal the sum of the savings from disposal, revenues from resale of

materials must be greater than the incremental increase in labor costs. To increase the

percentage of time spent in deconstruction activity and decrease overall time costs, a

building's materials should be deemed worth salvaging and with efficient resale

mechanisms and markets. Removing and reselling materials as quickly as possible can

overcome the disincentive for deconstruction created by the time costs of development

and building loans. Deconstruction is also more cost effective when the site is large

allowing the unwanted structure to be isolated from the other construction activity and be

deconstructed without delaying the site development. On the other hand when the new

construction will take place on the footprint of the existing structure, the time for removal

of the existing structure by deconstruction is a significant economic impediment (Guy

2001).