C-5. 23-606 CC - CONSENT ITEM: Approval of Amendments to the Existing Construction Contracts with Cornerstone Construction Group, Inc. in Amounts Not-to-Exceed $1,127,755 and $1,279,303 for the Renovation of City-Owned Properties (Known as Project Homekey) at 3868 and 3900 Sepulveda Boulevard, Respectively (Totaling $2,407,058).