Pilgrim Baptist Church caught fire in 2006.
The fire was caused by workers who were repairing the roof.
The church at 33rd and Indiana was designed by famed architects Dankmar Adler and Louis Sullivan, and was built in 1891.
Architects say they want to stay true to the original design.
"We knew that we didn't have the original architectural and structural drawings, so it was a very important part of our work to take these dimensions. We knew eventually we would be working backwards to recreate what used to be," said Conrad Paulson with Wiss, Janney, Elstner Associates, Inc.
Architects say rebuilding the church will take several phases.
Phase 1 of the project will cost $3.5 five million.
Church officials say they will need $26.5 million more to completely rebuild the church.
