DOC 5JD 150 DSM ST Renovation

The Iowa Department of Administrative Services is requesting bids for the interior renovation of 150 Des Moines Street, Des Moines, Iowa, with bids due October 28, 2026. The non-size reduced Project Manual is available for download through IMPACS.

The scope encompasses demolition and reconstruction of interior partitions, ceiling systems, flooring, and wall finishes across basement and first-floor levels of an approximately 23,000 square-foot, three-story building (construction type IIB). Work includes new restroom facilities with ADA-compliant fixtures, HVAC ductwork modifications and rebalancing, electrical systems upgrades, plumbing infrastructure, and technology/access-control installations. The building will be reconfigured to house business offices (20,293 square feet for 133 occupants), assembly space for classroom and training use (1,003 square feet for 67 occupants), and storage (1,878 square feet). All work must comply with the 2024 International Building Code, 2021 NFPA 101 Life Safety Code, and applicable state mechanical and plumbing codes. Metal stud partitions (3 5/8-inch and 6-inch), gypsum board, new ceiling grids with acoustical tiles at 9 feet 4 inches above finished floor, carpet, and luxury vinyl plank flooring are specified. Testing, adjusting, and balancing services are required pre- and post-construction. The scope includes base bid and alternate bid options for existing diffuser retention versus replacement, with rebalancing to match pre-demolition airflow rates. Contractors are responsible for trade coordination, penetration sealing, and patching of structural elements to match existing finishes. Drawings were prepared by Horizon Architecture and IMEG Consultants Corp. and issued for bidding as of August 20, 2026. The place of performance is Des Moines, Iowa (Polk County).