A hospital with 266 staffed beds and a helipad does not close for construction. The same goes for a state mental health campus caring for hundreds of patients, a university in session or a shopping center the week before a holiday. Work on an occupied site is a different job from work on a vacant one, and the difference is mostly about how carefully you keep the building running while you change it.
We build additions, renovations, site work and infrastructure upgrades around people who are still working, shopping, learning or being treated. That takes a phasing plan before the first permit is pulled: which area comes offline when, where the barriers go, how workers and materials move, what the neighbors will hear and smell and when the utilities will be shut down. We write it with the people who run the building, because they know what cannot stop.
We are straight about cost. Phased work takes more supervision, more protection and more time than the same work on an empty site, and we price it that way. What you get in return is a project that does not interrupt your operation, which usually costs less than the alternative.
Phasing plan and daily coordination
Phasing starts with a floor plan and a calendar. We divide the work into zones, decide the order, and show how each zone is isolated from the occupied space with barriers, negative air where needed and separate entries. Each phase has a start and finish date, a handover checklist and a defined sequence for turning utilities off and on. The plan is reviewed with operations, security, infection control where applicable and the fire marshal.
Once work begins, we hold short daily check-ins with the facility contact. They tell us what is happening inside their building, and we tell them what we are doing and what is coming. Surprises are rare when that conversation happens every morning. We also post a three week look-ahead where occupants can read it, so a noisy task never catches anyone off guard.
Keeping people safe next to a work zone
The first rule is separation. Occupants never walk through a work area, and the construction trade partners never use occupant corridors without an escort and a plan. We build dust-tight partitions, keep exits and fire lanes clear and test fire alarms and sprinklers when we change them. Hot work, such as welding and cutting, needs a permit and a fire watch, and we keep to both.
In health care settings, infection control is a separate discipline. Construction dust and moisture can carry pathogens, so we use negative pressure enclosures, sticky mats, HEPA filtration and wet cutting, and we monitor with the owner's infection prevention staff. In schools and public buildings, background checks and badge systems apply to the construction trade partners. Noise and vibration limits are written into the plan, and we measure them when the owner asks us to.
Campuses that never stop
Pueblo has several large institutions that operate around the clock. UCHealth Parkview Medical Center is a Level III trauma center that merged with UCHealth on December 1, 2023, and the Colorado Mental Health Hospital occupies a 300 acre campus whose buildings date from additions across the late 19th century into the 1960s. In 2022 it could care for 516 patients. Older buildings and live patients mean planning has to be careful, since the mechanical and electrical systems are often original or patched.
Colorado State University Pueblo has a campus of about 275 acres in the Belmont area. Its past work included a LEED Platinum library renovation and a renovated student center that opened in January 2018, and a campus like that tends to do projects in summer or between terms. We know the rhythms of academic and hospital calendars and plan around them, whether it is a lab upgrade or a parking expansion.
Where we phase most often
Phased construction comes up on hospital and clinic projects, on school renovations and additions and on mixed-use buildings where residents or retail tenants stay in place. It is also common on industrial plants that cannot halt production. In each case, the structure may be the same as in a new building, but the access, protection and utility planning are different.
Older campuses add surprises. Walls hide old piping, ceilings hold asbestos-containing materials and slabs contain conduits nobody drew. We survey before we open anything and keep contingency for unknowns. The trade team for selective demolition handles removals in occupied areas with containment and air monitoring, and abatement happens before general work begins.
Working in windows
Many occupied-site tasks have to happen in a limited window: a weekend, an overnight shutdown, a summer break. Utility tie-ins, roof work, flooring and structural changes are the usual ones. We plan these windows months ahead, stage materials, pre-assemble what we can off site and bring extra crews so the work finishes before the building is needed again. A window that is missed can cost weeks.
We also build in buffer. A shutdown that overruns by an hour is a problem. An overrun by a day can be a crisis. For every critical shutdown we write a rollback plan: what we do if something goes wrong, who is called and how the building returns to service. At the end, commissioning and closeout confirm that the systems we touched work together and can be turned over without surprises.
Questions to answer before you start
Who needs to approve each shutdown? What areas have the strictest rules? Where can trucks park, and where can we store materials without blocking an ambulance route? Is there a seasonal peak we should avoid? The answers shape the cost more than the scope does. A shop floor that can shut a bay for a month is a different project from one that cannot lose a day.
Tenants and the public have a stake too. If the work touches a shared building, healthcare owners, school and university facility teams and commercial landlords all have communications to manage. We help with notices, signs and visitor routing. A small amount of advance communication prevents most complaints, and complaints are the main reason projects on occupied sites get slowed down.
Walk the building with us
Let us see the areas, the schedule you cannot move and the people who run it. We will return a phasing outline and a price that reflects how the building has to work.
Questions Owners Ask
How much more does phased work cost than work on a vacant building?
It varies by project, but expect added cost for protection, temporary partitions, off-hours labor, extra supervision and slower production. We price the phasing as its own lines so you can see them. Often it is the only workable approach, and the cost is smaller than what shutting down would cost.
Can you build next to a working hospital?
Yes, with infection control and phasing plans reviewed by the hospital. We use negative air, dust control and monitoring, and we follow the facility safety rules. Work that affects life-safety systems or operating areas is scheduled with the hospital staff well ahead.
How do you handle noise and dust near occupied rooms?
We schedule loud tasks like cutting, coring and demolition for times that bother the fewest people, and we use partitions, wet cutting and vacuum systems. When the owner needs it, we monitor and log noise and dust. If a task cannot be made quiet enough, we move it to a better window.
What if we find something unexpected inside a wall?
We stop work in that area, protect the occupants and identify the item. Depending on what it is, we test, abate or reroute. Contingency lines in the budget cover this, and we keep you informed with photos and cost options.
Will we get a chance to review the phasing plan?
Yes. We want you and your staff to challenge it. We walk the plan with facility, safety and operations people, adjust it for what they know and lock it only when everyone agrees it can work.

