Hail, altitude and a utility queue are the three variables a Colorado data center owner should price before land. Denver sits at 5,280 feet and has had three of the ten costliest hailstorms in the country, so rooftop condensers, generator exhaust and yard equipment are designed for impact and thin air from the first sketch, not added after a bid comes back high.
Our work for hyperscale, colocation and enterprise owners runs from the pad to the commissioned hall. We take the site through grading, drainage and utility trenching, build the shell, and coordinate the electrical and mechanical rooms that carry the critical load. The part that sets the schedule is rarely a wall. It is the utility service date, the switchgear lead time and the point at which the owner's own integrator can energize and test.
The detail for individual facilities is on our data center page. Here we describe what a procurement team, a real estate lead and a facilities engineer should expect to see from a builder in this market: stated assumptions, a long-lead log, and a plan for the days between substantial completion and a hall that is truly ready for load.
Energy code, fire code and the edition question
Colorado has no single commercial code. Denver adopted new building and fire codes on June 13, 2025, based on the 2024 International Building Code, with a transition of about six months in which the 2022 or 2025 Denver Building Code could be used. The Home Builders Association of Metro Denver tracker dated January 20, 2026 shows other jurisdictions on the 2018, 2021 or 2024 editions. A multi-site owner has to confirm the edition for each parcel and the amendments attached to it, and we build that confirmation into preconstruction.
Energy rules matter more on a data hall than on most buildings. HB22-1362 requires any county or municipality that updates a code on or after July 1, 2023 to adopt an energy code at least as stringent as the 2021 IECC along with the state model electric and solar ready code, and from July 1, 2026 the benchmark becomes the state model low energy and carbon code. We review how each jurisdiction treats mechanical efficiency, backup generation and electrical room ventilation before design is released, and we hold a permit matrix open through occupancy.
Where load, land and generation meet
Owners looking at the north and east metro find parcels with road access and room for substations. Northland Business Park, just off US 85 at Fort Lupton, sold 316 acres on November 18, 2024, including 103 acres of shovel-ready land across 15 parcels. In Aurora, an E-470 interchange at Exit 22 cost $87 million and fully opened on June 28, 2024 to serve the roughly 4,000-acre Aurora Highlands development, which puts a high-capacity arterial next to large undeveloped tracts.
Generation is nearby as well. The Fort St. Vrain station near Platteville operated as Colorado's only nuclear plant from 1979 to 1989, was converted to natural gas in 1996, and now runs as a combined-cycle plant of roughly 965 MW under Xcel Energy. A nearby plant does not guarantee service to a given parcel, and we ask the serving utility for feeder capacity and study timelines before an owner commits. Sites around Aurora raise the same question from the other side of the metro.
The building around the critical load
A data center project is several contracts in one. The shell and site are conventional industrial work: tilt-wall or steel framing, a slab built for heavy equipment, truck access for deliveries and a secured perimeter. Inside, the electrical rooms, battery or UPS space, generator yard, fuel storage and chilled water or air-side cooling plant carry the load. We build and coordinate the support structures, as described under data center support buildings, so the main hall is not held up by a yard that is still being excavated.
Underground work is where schedules slip quietly. Medium-voltage feeders, communications paths and fire water all share the same corridor, and every conduit set in a duct bank is permanent once concrete is placed. Our electrical duct bank work is surveyed, spare-conduit counts are written into the drawings, and test mandrels are pulled before backfill. Reference points are recorded on the turnover set so that the owner's electrician finds each pull box later.
What moves the number on a data hall
Cost on a data center is dominated by the critical systems, but the builder's decisions still move the total. Three items matter most to us: how early switchgear, generators and chillers are released, how much of the yard and underground work is complete before equipment arrives, and how many times the electrical design changes after pricing. Hail protection for exposed equipment, altitude derating on generators and air-cooled plant, and additional structure for rooftop units each add cost that a sea-level estimate leaves out.
We address this in preconstruction services by pricing in layers: shell and site, then the critical systems, then the commissioning allowance. That structure lets an owner compare the builder's portion with its own equipment purchases and decide where to take risk. When an alternate saves money, such as a different generator yard arrangement or a revised cable route, we show the schedule consequence next to the dollar figure.
Sequencing to the energization date
The schedule for a data hall runs backward from the date the owner needs to energize. That date depends on the utility's work, the switchgear delivery and the factory test, and each has its own float. We separate what is truly gated by those items from what is not, and we hold the early-release list tightly: foundations for the yard equipment, duct banks, site utilities, then the building shell and roof so that the electrical rooms are dry and conditioned when gear arrives.
Commissioning is a block of time that needs room. Integrated systems testing under load, including generator and transfer switch tests, normally follows mechanical and electrical completion, and the owner's operations team joins. We plan that window explicitly and write the pass criteria into the commissioning plan before the first piece of gear is set, so the test is not a surprise to anyone.
Energized work, fuel and hot-work discipline
A data center site mixes energized gear, fuel, lifts and a lot of cable pulling. We run lockout and tagout through the owner's program, restrict energized work, and treat arc flash labeling and boundaries as a turnover requirement, not a final-week item. Crane lifts of generators, transformers and rooftop cooling gear are planned with lift drawings, ground bearing checks and an exclusion zone reviewed with the owner's safety lead.
Fuel storage and secondary containment are inspected and tested before filling, and we coordinate fire alarm, suppression and smoke control tests with the fire authority as part of the commissioning sequence. Sites that share a corridor with a cooling-intensive neighbor, such as cold storage, also need to coordinate shared utility easements.
Send the load profile and the energization date
Share the megawatt target, the utility correspondence you have, and the date the first hall has to be live. We will return a long-lead list, a phased schedule and an early view of what the serving utility, the building department and the fire authority will each need. Owners also weighing power generation and substation work can read our page for utilities and power.
Common Questions
How far in advance should we release switchgear and generators?
As soon as the one-line diagram and load assumptions are stable, which is usually before permit issuance. Switchgear, transformers and generators have the longest lead times on the project, and an order placed after the building is dry arrives after the building is dry. We record the release date, the factory test date and the delivery window for each item on one log and flag any slip within a day.
Does altitude change what we specify for generators and chillers?
Yes. Thinner air reduces cooling and combustion capacity, so equipment is derated above sea level, and the factor depends on the model. Denver is at 5,280 feet and many Front Range sites are higher. We check each submittal for its altitude rating and size the unit for the site elevation, which sometimes means a larger frame or a different cooling arrangement.
What does hail mean for rooftop and yard equipment?
Denver has had three of the ten costliest hailstorms in the country, so exposed equipment needs a plan. Options include hail guards on condenser coils, equipment placed inside screened yards, and roofing and flashing selected for impact. The cost is small compared with the downtime from a damaged coil, and we price the options side by side during preconstruction.
Can you build while the utility is still designing our service?
Yes, within limits. Site grading, drainage, duct banks, foundations and the shell can proceed against a utility study that is still open, provided the substation location and feeder routes are fixed. We keep the open items visible and do not set electrical gear until the service path is confirmed in writing.