An 805 square foot cath lab renovation sounds small until you consider where it sits: inside a working hospital, next to patients, under infection control rules and on a schedule the state recorded as March to September 2025, with a $500,000 budget. Work like that is the clearest example of why phased construction on an occupied site is its own discipline. The space is small, the stakes are high and nothing about the surrounding building can stop.
Phased construction means the building, store, clinic, school or office stays open while we build. It covers everything from tenant suites in an operating center to wings of a hospital, floors of an office tower and sections of a parking lot. We plan these projects around the occupants, not the other way around, which means barriers, dust control, noise limits, protected egress, utility shutdowns timed to minimize disruption and a schedule that agrees with how the owner actually runs the business.
We begin by listening. Who occupies each area, when are they busy, what cannot be interrupted, and what can be moved? A clinic may tolerate noisy work in the early morning and need quiet by 9 a.m. A retailer may allow demolition only after closing. A school needs the work done during summer. Each of those answers shapes the phasing plan, which we put in front of the owner and the occupants before any crew mobilizes.
Then we build a phasing drawing and a one-page logistics plan: where barriers go, which corridors are open, where deliveries enter, where workers park and which utilities are shut down when. We share it with the building official and the fire marshal if required, and with the tenant's staff. Surprises in occupied buildings are expensive, so we aim to have none. Our tenant improvement work follows the same approach on a smaller scale.
Communication is part of the plan. We assign one superintendent as the daily contact for the owner's facility staff, post notices before each phase begins and hold a short weekly walk with the occupants so complaints about noise or access are heard within days instead of at closeout. When something does go wrong, such as a water line that is hit or a barrier that fails, the response is documented and the occupants are told what happened and what has been done about it.
McAllen's medical district has several hospitals within a short distance of each other, including a reported advanced level three trauma center, a certified primary stroke center and a 60-bed heart hospital. Those facilities cannot close for renovation, so every addition or upgrade is done in phases. The state's project records list renovations ranging from a cath lab to a multi-million dollar neuroscience ICU, all inside operating hospitals.
Retail and aviation facilities face the same pressures. A terminal expansion that added 55,000 square feet to an existing 100,000 square foot terminal at McAllen Miller International Airport, and a $160 million expansion under consideration with work possibly starting in 2027, both show how much the Valley depends on facilities that cannot shut down. Healthcare owners will recognize the issues in our healthcare systems work, and the district itself is covered under the McAllen medical district.
In healthcare, infection control risk assessments drive the layout. We build negative-pressure enclosures when required, use HEPA filtration, seal penetrations, clean carts and shoes, and maintain pressure relationships monitored by gauges. Water and air work are scheduled to avoid contamination. The facility's infection preventionist signs off on each phase.
In every occupied building, egress must remain clear. Fire alarm and sprinkler systems are kept operational or covered by a fire watch while they are impaired, and any shutdown is coordinated with the building official or the owner's fire safety officer. Workers are trained on the site rules, and public areas are protected with solid barriers, signage and floor protection. At retail sites, we keep accessible entrances and parking open and mark temporary routes clearly.
Demolition becomes selective: saw cutting instead of breaking, enclosed chutes for debris and sometimes core drilling in off hours to avoid vibration. Utilities are rerouted with temporary service so the occupants never lose power or water for long. New construction is closed in quickly with temporary partitions that match fire ratings, and finishes are scheduled so that dust-producing work is done before clean work begins.
Every phase ends with a clean turnover: an inspection, a cleaning, a punch walk and a handoff to the occupants. Then the next phase begins in the area that was just vacated. This rhythm is slower than working in an empty shell, and our price reflects it, but it protects revenue that the owner would lose if the building closed. Where a project grows beyond a few areas, our renovation work uses a similar framework.
Phased projects take longer than empty-building projects of the same size. What matters is that the time is predictable. We lay out each phase with its duration, its dependencies and the dates the owner needs space back. Shutdowns of power, water, fire protection and medical gases are scheduled with advance notice, often a week or more, and long-lead items are on site before the shutdown begins.
We also plan for seasons. Retail owners want to avoid construction in the fourth quarter. Schools want construction done in summer. Hospitals want to avoid flu season when beds fill. We build those windows into the schedule at the start, and when they conflict with permit timelines or equipment deliveries, we say so early, with options. Coordination of long equipment orders is described in long-lead procurement, and the final handoff is part of commissioning and closeout.
Describe your hours, your busy seasons and what cannot stop. We will return a phasing outline and a schedule you can share with your staff.
In most cases, yes. We separate the work area with barriers, control dust and noise, and phase demolition and deliveries around your hours. The plan is shared with your staff before we begin.
Sealed enclosures, negative air where needed, walk-off mats, enclosed debris chutes and work hours matched to your operations. In healthcare, an infection control risk assessment sets the requirements.
Usually longer than the same work in an empty building, because the space is smaller at a time and shutdowns must be scheduled. We give you a phase-by-phase schedule so you can see the trade.
We schedule it with advance notice, bring temporary service where it is needed, and keep the shutdown window as short as possible. Fire protection impairments are covered by a fire watch.
We do, through a single point of contact, with notices before each phase. You decide what is communicated and in what form.