A plant shutdown window is the scarcest thing on a manufacturing project, and the building has to be designed around it. When a line can only come down for a long weekend or a planned outage, the shell, the utilities and the process foundations that tie into it must be finished, tested and waiting. We build manufacturing plants from that constraint: the shutdown date is fixed first, and the sequence of structure, slab, utilities and equipment setting is worked backward from it.
Northern Colorado shows the range. A 101-acre campus in Fort Collins was planned to reach 660,000 square feet and up to 1,700 employees, with its first two phases totaling 363,320 square feet at about $134 million. In Windsor, wind turbine blade production was announced in February 2021 to move there from the Brighton factory, with about 150 added jobs expected. On the south side of the metro, a $350 million, 266,000 square foot center in Littleton drew about 1,500 construction contractors over a three-year build. Each of those is a different manufacturing building, and each had its own pace of change.
We apply the same discipline to a new greenfield plant and to an expansion on a live campus. Foundations for process equipment are isolated from the building slab, the utility interconnect is planned with the utility before the structure is ordered, and the commissioning plan is written at preconstruction and not at the end. For expansions of operating plants, our phased construction on occupied sites approach covers the traffic, noise, dust and shutdown rules.
Starting from the process, not the shell
The first meeting is with the controls and process engineers, not the real estate team. We ask for the equipment list with weights, footprints, vibration limits, utility demands and the delivery order of the heavy pieces. From that we determine the crane lanes, the floor loading, the pit and trench layout and the sequence in which the roof or wall panels must stay open to receive equipment. A press or a furnace that arrives after the roof is closed changes the erection sequence for the whole building.
We then review the process drawings against the slab pour plan. Pits, sumps and trench drains are placed before the pour, and openings that are left out of the slab are expensive to cut later. Where the work is a modernization inside an existing building, industrial renovations and modernization work follows the same logic but adds a survey of the existing slab, columns and utilities before any cutting begins.
Work we manage most closely
Concrete is the part of a plant that has to be right the first time, so we manage foundations, slabs and equipment pads closely. That includes thickened-edge slabs for heavy traffic, isolated machine foundations and trench work. Scheduling, supervising and inspecting placement lets us hold flatness and levelness targets, curing times and joint layout in line with the process engineer's requirements, with one accountable team on the pour day.
Structural steel erection and the building envelope follow on the same schedule. Because the people who set the steel are coordinated with the people who set the anchor bolts, the base plate grout and the embed plates, there is less field rework. For light assembly and product development buildings, the same crews work on flex and light industrial projects, and the same logic applies to heavier production plants such as an automotive or EV plant.
Site selection items operators underestimate
Parcels differ more than their acreage suggests. The Great Western Industrial Park in Windsor is a 3,000-acre master-planned park with dual rail interchanges to Union Pacific and BNSF, sites from 5 to 200 acres and industrial buildings from 60,000 to 1,000,000 square feet. A rail-served site changes where the receiving dock sits and how bulk raw material is unloaded. A site without rail changes the truck court and the on-site storage.
Utility capacity is the other gating item. Plants draw large electrical loads, process water, compressed air and sometimes natural gas at pressures the local distribution system cannot supply without upgrades. We ask for a will-serve letter and a utility interconnect plan before the building is priced. When a campus changes ownership or footprint, as the March 2024 announcement of an Intel facility sale on the Harmony Road corridor in Fort Collins illustrates, there is a market for plants that can be reconfigured, and we design for that where the owner wants the flexibility.
Permitting a plant in Colorado
Colorado's commercial building codes are adopted city by city and county by county rather than as one statewide code. The Home Builders Association of Metro Denver tracker dated January 20, 2026 shows Adams County, Arvada and Castle Rock on the 2018 I-codes, Aurora and Arapahoe County on 2021, and Boulder, Golden and Cherry Hills Village on 2024. A plant straddling a jurisdictional line, or a multi-site program, can end up working to several editions. We confirm the edition for each parcel and carry it through the design.
Statewide, HB22-1362 requires any county or municipality that updates a building code on or after July 1, 2023 to adopt an energy code at least equal to the 2021 IECC, with the state model low energy and carbon code as the benchmark from July 1, 2026. That affects envelope, lighting and mechanical design for a plant, even where much of the energy load is process. Process safety, air permits and hazardous materials review run on separate tracks, and we bring them into the schedule early.
Safety on a plant site
Safety planning begins with your plant rules. We attend your orientation, adopt your lockout and tagout procedure for any tie-in and map the hot work, confined space and crane lift permits that will be needed. Crane lifts over or near operating equipment are planned with a lift plan and an exclusion zone approved by your safety lead.
We also separate construction personnel from production personnel with defined access points, laydown areas and break facilities. Shutdown work, which compresses large crews into a short window, gets a dedicated safety plan, a daily coordination meeting and a documented handoff to your operations team when the line restarts. For advanced manufacturing clients, that handoff includes clean-room or controlled-area criteria if the process requires them, and for metals and heavy industry sites, it includes heavy-haul routes and floor load postings.
Send the process requirements, not just the floor plan
Share the equipment list, utility loads, shutdown windows and the date production has to start. We will return a tie-in plan and a schedule that shows which scopes can proceed while the plant keeps running.
Common Questions
How do you protect the production schedule on an expansion?
We separate the work that can be done while the plant runs from the work that needs a shutdown. Foundations, structure and envelope usually proceed outside the production area. Tie-ins to existing utilities, line moves and equipment setting go into the shutdown window with pre-built assemblies, a rehearsed sequence and spare material on site.
Can you build around equipment that is delivered late?
Often, if we plan for it. We leave a wall panel bay or a roof section open for the late equipment, protect the slab and pits, and keep the permanent building weather-tight with temporary closures. The cost of that approach is lower than the cost of cutting and patching a completed building.
What utility information do you need before pricing?
We need the electrical demand, the process water and wastewater loads, the compressed air and gas requirements and the points of connection. A will-serve letter from each utility is ideal. Without it, we carry an allowance and a clear note on the exposure, and we call out the utility lead times that will drive the schedule.
Which building code applies to my plant?
Whichever edition the jurisdiction on your parcel has adopted. Colorado adopts commercial building codes locally, so neighboring cities can differ by several editions. We confirm the edition and any local amendments with the building department before design starts and revisit it if the city adopts a new edition during the project.
Do you coordinate with the equipment vendors?
Yes. We coordinate foundation drawings, anchor bolt templates, utility drops and rigging plans with the vendors, and we hold a submittal log that tracks each item from request to approval to delivery. That log is part of the turnover package.