Cost indices are considered as important tools which help both the owner and the
contractor to identify the primary evaluation of project depending on the cost of previous
and similar project in easy and quick form, and the most important using way
s by
researchers in process modernization previous cost in shortest time and least effort.
Methodology was adopted to help in designing cost index taking into account
weights of chosen groups instead of weights of items, so It has been suggested three cost
indices for school building in Lattakia by studying a sample consists of 32 schools were
constructed between 2001-2012, and then The best cost index between them which
explains the biggest portion of square meter cost variations due to escalation was selected,
also it has been suggested a model that reflect the relationship between cost of square
meter and developed cost index for corresponding year through statically program spss.