E-Commerce Fulfillment Center Construction, Northern Colorado

Pick rates, not square footage, tell a fulfillment operator how much building to buy. A site that processes thousands of small orders per shift needs conveyor and sortation space, mezzanines for pick modules, enough parking for a shift change, and dock doors for parcel carriers who arrive in waves. The shell has to carry those loads and leave room to change them, because the product mix and automation of an online operation can shift within a year or two. We build fulfillment facilities for operators and developers who want the structure to stay useful through that kind of change.

Where a fulfillment building sits matters as much as how it is built. Many operators want to be near homes, and the northern Front Range is adding them. Johnstown's population grew from 9,887 in 2010 to 17,303 in 2020, and Evans grew 19.57 percent over the same decade to 22,165 residents. Interstate 25 connects these communities to Fort Collins and the Denver area, and the interchanges are where fulfillment users look first.

What a fulfillment building asks of its structure

The three structural questions are floor flatness, clear height and column spacing. Narrow-aisle and automated storage systems have tight tolerances on slab flatness, and we test the floors and report results. Clear height affects both capacity and sprinkler design: tall racks need in-rack protection or ESFR heads, and the choice has to be made before the roof framing is ordered. Column spacing should match the conveyor and racking layouts your integrator proposes.

Next come the interior structures. Pick modules on mezzanines, catwalks and platforms often add a second operating level to a building, and the slab and columns below them have to be designed for the extra load from the start. We also provide clear paths for conveyors through fire walls and verify with the building official how those penetrations will be protected.

The interchanges where fulfillment is going

The Ridge at Johnstown is a 265-acre master-planned mixed-use site at 6424 East County Road 18 with 90 acres of I-25 frontage, access through the Highway 402 interchange and about 100,000 vehicles per day of freeway visibility; 122 acres had been sold to residential developers. A separate 2022 report described a Highway 60 and I-25 project in Johnstown with more than 1,000 housing units, more than 1 million square feet of retail and an interchange passing more than 99,000 vehicles daily. Housing and retail bring last-mile demand and also compete for the same corners.

North of Fort Collins, Wellington reports a Wellington Business Center at 3997 Water Lily Drive planned at more than 95,000 square feet of commercial space, with a 36,000 square foot, 14-unit first phase and an I-25 exit about three minutes away. Such small-bay formats suit regional delivery, returns processing and service-based fulfillment more than they suit a single large operator.

Building for parcel carriers, shifts and trailers

A fulfillment site has more pavement than most buyers expect. Employee parking, a staging area for parcel carrier vans, trailer storage and a clear fire lane all compete for the same land. We lay out the paving and the concrete aprons in tandem with the building, and our stabilized parking lot work handles the sections that will see heavy employee and delivery traffic.

Inside the building, we frame and finish the offices, break rooms, restrooms and returns-processing areas that an operator of this type needs. A new 24,000 square foot industrial building at the southeast corner of I-25 and Prospect Road, for instance, offers suites from 3,000 to 24,000 square feet with 12 foot by 12 foot and 14 foot by 14 foot overhead doors; that scale and door size are typical of the smaller formats that suit last-mile and regional operators.

Communities we build fulfillment space in

We work in Fort Collins, Loveland, Windsor, Johnstown, Evans, Greeley and the smaller towns around them. Each has a distinct feel: the Centerra area in Loveland has a campus-style industrial layout, with three new 123,000 square foot buildings announced in September 2019 on a campus with more than 650,000 square feet, while Evans offers new buildings on Brantner Road built in 2025 near Highways 85 and 34 and I-25.

When a user is comparing sites across municipal lines, we compare the cost of the public improvements, stormwater requirements, utility availability and review timelines, and show those in one table. Operators who want a general sense of how distribution differs from fulfillment can read our logistics and distribution page, and those exploring temperature-controlled fulfillment for grocery or pharmacy should see cold storage and refrigerated construction.

Opening before peak season

Fulfillment owners usually have a hard date: the opening that precedes the busiest quarter of their year. We therefore plan backward from the date the racking and conveyor integrators need the floor, usually weeks before the owner's own start. That date drives the earthwork, concrete, steel and roof sequence, and a schedule that shows it clearly is easier to protect.

Early release packages help. A foundation and slab package can start while the owner is finalizing interior systems, and we can make selected long-lead orders, including dock equipment and overhead doors, before design is complete. Our industrial tenant improvement team then turns over finished space in sections so the operator can install equipment in one area while we finish another.

Review paths for shells and interior work

A fulfillment project may involve a municipality, a county and sometimes a fire district. Fort Collins treats the 2024 International Building Code with local amendments as the current code for permits submitted on or after April 1, 2026, while unincorporated Weld County adopted the 2024 International Building Code effective June 15, 2026, with engineered foundation designs required for most new structures. Johnstown and Evans each administer their own review, so confirm the edition before design.

The City of Fort Collins also requires commercial air leakage testing, with an alternative protocol for small commercial buildings under 5,000 square feet. Because fulfillment owners usually need an occupancy permit before racking can be loaded, we sequence inspections to leave time for corrections.

Comparing sites for a fulfillment building?

Send us the pick profile, door count and the date you need racking installed. We will compare parcels, structure and parking, and return a scope with a schedule that protects your peak-season date.

Common Questions

Is it better to lease a speculative building or build to suit?

A speculative building is faster if its clear height, door count and power match your needs. Build-to-suit gives you control over slab flatness, mezzanine loads and layout but takes longer. We can review a spec building against your racking and automation plan in a few days and tell you what changes would be required.

How much parking does a fulfillment building need?

The number depends on shift size and municipal code, and shift overlap is the factor owners forget. Plan for parking for two shifts at the changeover, plus visitors and ADA stalls. We lay out the lot early because parking can control how much building a parcel supports.

Can we add a mezzanine after the building opens?

Yes, if the slab and foundation were designed for it. If not, adding a mezzanine may require supplemental footings and slab reinforcement. It is far cheaper to provide capacity at the start, even if the mezzanine is built later.

What is a realistic permitting expectation for a speculative shell?

Expect a plan review cycle with comments, a civil and stormwater review that can run in parallel and a separate fire protection review. Timing depends on the jurisdiction, and we recommend a pre-application meeting before design is complete.

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