NIGP 91104: C.i.p., Architect/Engineer Extra Services

NIGP 91104 C.i.p., Architect/Engineer Extra Services is an Item code covering the supplemental design, inspection, and engineering services that state and local governments procure to extend, enhance, or complete primary architecture and engineering contracts. State and local buyers use this code for work such as system-wide infrastructure assessments, condition evaluations, construction administration and inspection staffing, cost estimating, facility condition assessments, and specialized consulting on design or construction challenges. Recent activity shows a mix of issuing bodies—transit authorities, county toll road authorities, county and city departments, school districts, and special-purpose authorities—soliciting qualification-based services across transportation, water/wastewater, parks, airports, and municipal facilities. Harris County Toll Road Authority has appeared twice in recent months, requesting system-wide inspection and condition assessments of roadway and bridge infrastructure (RFSQ due August 17, 2026) and design consultant services for roadway and structural segments of the Hardy Downtown Connector Program (RFSQ due August 10, 2026), both with multiple award intent. The Great Lakes Water Authority (Michigan) is augmenting engineering capacity with project management and construction inspection staff (RFP due August 10, 2026), seeking an average of five project managers and two to four full-time construction inspectors for ongoing water projects.

Recent solicitations span a geographic breadth: Texas jurisdictions (Harris County, Arlington, City of Dalton) dominate by volume, with activity also concentrated in Florida (Orlando, Seminole County) and Georgia (Atlanta, DeKalb County, GDOT). Representative recent work includes the City of Santa Fe's qualification-based procurement for architectural and engineering services for a regional airport terminal expansion (RFP due December 17, 2025, with project spanning planning through construction); Lowndes County, Georgia's request for engineering services supporting CDBG-funded infrastructure improvements with preliminary engineering reports required within thirty days of selection (RFP due August 17, 2026); and Montgomery County, Pennsylvania's establishment of a qualified-vendor cost-estimating list for a five-year term covering preliminary through construction-document phases across its capital projects portfolio (RFP due July 16, 2026). Work spans inspection, assessment, design support, construction administration, owner representation, and specialized services such as cost estimation and planning assistance, typically awarded on qualification-based selection with compensation negotiated post-award or structured as task orders under IDIQ or on-call frameworks.