Disclaimer: Use of the City of Raleigh’s GSI Cost Tool is intended solely for enabling rapid
comparison of alternative stormwater management designs thereby assisting developers, designers,
and managers in understanding opportunities for use of GSI under City codes and programs along
with potential cost savings. The City of Raleigh has made reasonable efforts to incorporate into
this tool unit costs and other cost-related factors and formulas that are representative of current
costs in Raleigh. Data entered is subject to public records requests. No warranties, expressed or
implied, are provided for the data herein or its use or for interpretation or use of any output
generated by this tool.