Cheyenne is working on its first real rulebook for construction sites, and it would reach well past the data center projects that set it in motion. A package of Unified Development Code amendments, case PLTA-26-5, would add a new Section 5.8.9 covering temporary construction uses on every job in the city, from a subdivision to a server farm (via City of Cheyenne Planning Commission staff report).
Senior planner Seth Lloyd's report lays out the problem plainly. The code has treated construction as an ancillary use, and staff wrote that a strict reading could classify building out a subdivision as an industrial use sitting in a residential zone. Large projects now run for years, not weeks, which the 2012 code didn't anticipate. Lloyd told a council committee the construction exemption has been "pushed to its limits," Cowboy State Daily reported.
Under the draft, every site would need adequate utilities and fire protection in place before work starts, plus a right-of-way permit that includes a review of access points. Moving 50 cubic yards of dirt or more would trigger a grading permit. Crews would have to keep mud and debris off the street, store fuel and hazardous materials under the International Fire Code, and follow federal OSHA trenching and confined-space rules (29 CFR 1926 Subparts P and AA), which Wyoming OSHA enforces.
Lighting gets specific. Fixtures would have to be fully shielded and aimed down, with light spill capped at 0.5 foot-candles at the property line. In exchange, light poles could exceed the normal height limits. Signs would follow nonresidential sign rules, with room for fence wraps and required safety postings.
Off-site staging yards under an acre would need a layout in an approved site plan, a 10-foot buffer from neighboring residential lots, and fence-and-wrap screening from the street unless everything within 200 feet is zoned industrial or business park. They'd also need a reclamation plan and financial security equal to 125% of the engineer's cost estimate before a permit is issued.
The heavier rules kick in for big jobs: a development footprint of five acres or more, or off-site staging of an acre or more. Those sites would need a staging layout approved before work begins and a 50-foot buffer between equipment, storage and activity and adjacent residential lots, with an exception for active work on approved building elements. They'd also need the same screening, state WYPDES compliance covering dust, stormwater and related issues, and a traffic impact study if more than 100 employees are on site at once. Water for dust control could be limited during shortages.
Cleanup has a clock. Within 60 days after construction ends or the permit expires, temporary structures and materials would have to be gone and the site restored, though the planning director could stretch that to 180 days for seasonal conditions. Layouts would have to be updated within seven days of changes to access, circulation or staging, and changes to fire apparatus access would need the fire marshal's sign-off. Exceptions would go through the subdivision standards waiver process.
On-site construction uses would be allowed in any zone with a building permit. Off-site staging and workforce housing camps would need conditional use approval everywhere except business park and industrial zones.
The same ordinance adds data center standards on noise, closed-loop cooling and fire safety, bars city staff from signing nondisclosure agreements, and amends the utilities section to state that new development pays all costs of required system improvements. A Nov. 2 Planning Commission report recommended splitting proposed data center setback tiers into a separate amendment.
Council member Mark Rinne sponsored the package. Cowboy State Daily reported the Public Services Committee advanced it 2-1 on Nov. 2, with Pete Laybourn voting no. "Why not do it right the first time?" Laybourn asked. Kathy Emmons countered, "The horse is already out of the barn."
The city's data center page lists council dates of Nov. 9 and Nov. 23. As of Nov. 10, no result from the Nov. 9 meeting had been posted in a form we could verify, so this is still a proposal, and the final text may differ from the staff report.
Why it matters for Contractors
If you build in Cheyenne, this would change how you set up a job. The 50-cubic-yard grading trigger catches plenty of ordinary residential work, and the shielded-lighting cap and tracking rules apply to every site, not just big ones. Budget for a right-of-way permit and access review on each project.
Small shops that rent an off-site yard should note the 125% reclamation bond and the 60-day cleanup deadline, both of which tie up cash. Watch the Nov. 23 council meeting for the adopted language before changing how you bid.