A 466,000 square foot, three-building industrial project with rail access in Commerce City, financed at $77.1 million and set to build from April 2026 through May 2027, shows how Front Range warehouse product is delivered now. Several buildings share one site, one civil package and one set of utility extensions, and the tenant clock starts when the shell is turned over. We build warehouse shells to that pattern in Commerce City and across the metro, and we run the shell, the slab and the site as a single schedule rather than three separate ones.
Operations teams read a warehouse as a set of numbers: clear height, column grid, dock-door count, trailer positions, floor flatness and the power available at the panel. We hold those items as design inputs from the first meeting and verify each one at turnover. A bulk-storage building that will run reach trucks needs a different slab tolerance than a building that will hold floor-loaded pallets, and a building planned for racking needs the column grid and sprinkler design settled before steel is ordered, not after.
Scale is climbing. Crossroads 25, a 76-acre, 1.1 million square foot, six-building park at the northeast corner of I-25 and E-470 in Thornton, has a first phase of 828,000 square feet scheduled for delivery in Q3 2027. Parks of that size are built in sequence: civil work, shared detention and utility extensions go in ahead of the first footing, then buildings follow phase by phase. Our warehouse shell construction practice is organized around that order of work.
Where warehouse demand sits along the Front Range
Warehouse construction in the Denver region clusters where interstates, beltway interchanges and rail meet. Commerce City reports two Class I freight rail lines, sits where three major interstates come together and borders Denver International Airport. Thornton gets I-25 twice and E-470 across its north, and the Quebec Street interchange on E-470 has been open since November 2014. Those corridors decide where trucks can turn around in a single shift, and that is what a tenant pays for.
Operators in Thornton and along the north I-25 corridor often weigh a speculative shell against a build-to-suit building. We price both against the same site package, so the comparison is on the building and not on hidden civil scope. When the space will serve a distribution operation, we also settle the requirements of logistics and distribution users, such as cross-dock layout and trailer staging, before the column grid is drawn.
Soils, hail and code adoption on a warehouse shell
The Colorado Geological Survey states that most homes, schools and roads in Colorado are in areas of potentially expansive clay, and that volume increases of 3 percent or more are considered potentially damaging and generally require specially designed foundations. For a warehouse that means the geotechnical report decides the footing and slab design. Floor slabs on expansive bentonite are typically designed with overexcavation and moisture conditioning or with a structural slab, and we make that call with the engineer of record before the bid set is final. A slab that heaves at a joint shows up first as a forklift problem.
Roofs are the other exposure. Denver sits at 5,280 feet, ranks 10th among U.S. areas of at least 50,000 people for hailstorm risk and has had three of the ten costliest U.S. hailstorms. We price roof membranes and rooftop equipment screens with a hail rating in mind and discuss the insurance consequences with the owner early. Code editions vary by jurisdiction, so we confirm the adopted edition with the local building department at the start of each project. If you are comparing sites, our work on industrial concrete floors can be scoped alongside the shell.
What a warehouse shell package includes
The shell package starts with the mass grade and pad certification, then foundations, the slab, the structural frame, the roof, dock equipment and the exterior envelope. Tilt-up panels, pre-engineered steel and conventional structural steel can all deliver the same footprint, and the choice depends on clear height, panel layout and how fast the building has to be enclosed. We compare them honestly: see tilt-wall buildings for the concrete route and pre-engineered metal buildings for the steel route.
Inside the shell we coordinate the fire protection design with the racking plan, the lighting and power distribution with the intended operation, and the dock leveler and door schedule with the trailer fleet that will actually call. Core and shell turnover includes a punch list, the as-built set and the commissioning record for life-safety systems. Tenant improvements such as offices and charging areas follow on a separate release so the shell is not held up.
Where warehouse cost moves
Three things move a warehouse number more than anything else: the site, the slab and the steel. A flat, previously graded pad with utilities at the street is cheaper than a parcel that needs fill, a detention pond and a long water extension. The slab specification, including thickness, reinforcement and flatness class, can swing the floor line by a wide margin. Steel pricing depends on when the order is released, which is why preconstruction buys the schedule slot early. Our site clearing and mass grading work is priced separately so you can see this split.
Denver-area snow and frost also shape the numbers. In Lakewood the design handout lists a 36 inch frost depth and a 30 psf ground snow load, which is a useful reference point for the metro even though each jurisdiction sets its own criteria. We confirm the criteria for the specific parcel, carry the structural premium for any added snow load in the base bid and show it as its own line so you can compare proposals on equal terms.
Send us the program for your warehouse
Send the clear height, bay size, dock count and target turnover date. We will return a sequenced schedule, the long-lead items that control it and the site questions that need answers before pricing is firm.
Common Questions
How long does a warehouse shell take once the site is ready?
For a single building in the several-hundred-thousand square foot range, the driver is rarely the frame itself. Panel or steel lead times, permit release and the slab cure window set the pace. The Commerce Yards project mentioned above runs about thirteen months for three buildings, which gives a realistic sense of a multi-building program. We publish a sequenced schedule at preconstruction and update it against material release dates each week.
Do I need a geotechnical report before pricing?
Yes, and it should be commissioned before the pad is finalized. Expansive clay is common in Colorado, and the Geological Survey warns that volume increases of 3 percent or more can be damaging. The report tells us whether we are overexcavating, using a structural slab or driving piers, and that decision can change the foundation budget significantly.
Can you build in phases so the first tenant moves in early?
We can, and it is how most multi-building parks are delivered. Civil work, detention and utilities go in as the first package, and each building is released as a separate permit and turnover. Phase one of Crossroads 25 follows that logic with 828,000 square feet ahead of the rest. We make sure the shared infrastructure is sized for the full build so that later phases do not reopen the first one.
What about hail on the roof and rooftop equipment?
We specify the membrane, the insulation board and the equipment curbs with hail exposure in mind, and we raise the insurance and warranty implications before a bid is final. Denver has had three of the ten costliest hailstorms in the country, so owners in the metro should treat roof selection as an operating risk and not a finish choice.
How do rail-served sites change construction?
A rail spur adds earthwork, track and crossing work, and it constrains where docks and truck courts can sit. In Commerce City, where two Class I lines operate, we coordinate the spur design with the railroad early. Our rail spur site improvements scope covers that interface.