Delivering the construction: contracts, schedules and site work

Before a demolition crew arrives, the drawings must satisfy a building department and, in many cities, a health department that reviews clinical spaces separately. Reviewers look for the same broad categories across the region even when the paperwork differs: occupancy classification, egress, plumbing fixture counts, ventilation, and the way medical gas or nitrous lines are routed. You will not get a framing inspection scheduled until the permit is issued, and the permit is issued only against a set of stamped drawings that match what will be built.

Two inspections usually sit before the walls close: rough framing and rough electrical, plumbing and mechanical. A dental fit-out adds its own pressure here because the equipment rough-ins, drain slopes, vacuum lines and electrical circuits for chairs, must be placed before the board goes up. Corrections at this stage are cheap. The same correction after drywall is not. For a fuller picture of the sequence, see our guide on permits and inspections.

Contract route is the first delivery decision a practice actually controls, and it shapes everything downstream. In a design-bid-build arrangement, the drawings are completed first, then priced by competing contractors, then awarded. It gives the clearest number before signing, but it lengthens the calendar and it locks in decisions early. A design-build arrangement puts the builder on the team while drawings are still moving, which shortens the schedule and lets cost feedback shape the layout, at the price of not being able to compare bids against each other. Construction management sits between the two: an owner's representative manages trade packages and holds the budget while the design keeps developing.

None of these is correct in the abstract. A remodel in an occupied suite usually argues for a route that keeps the builder involved early, because the unknown conditions behind existing walls are found during work, not before it. A ground-up build on a clean shell tolerates a firmer bid. The drawings construction starts from matter as much as the route. If the set is not coordinated across architectural, mechanical and electrical sheets, the contractor will carry a contingency, and you will pay for it whether or not it is needed. The firm behind this magazine describes the design stages that precede build as the point where those sheets are reconciled.

Once the site is cleared, the sequence is largely fixed. Underground plumbing and electrical come first, because they sit under the slab. Then framing, then overhead mechanical and electrical rough-in, then insulation and drywall, then finishes, then equipment. Dental work inserts two extra layers: the equipment rough-in within the framing phase, and the equipment set itself at the end, after paint and flooring. The equipment package cannot be installed late if the chairs arrived late, so the calendar has to carry the delivery lead times backward from the completion date.

Trade stacking is the quiet risk. When framing, mechanical and electrical contractors all want the same two weeks, the suite becomes a bottleneck, and the inspection that follows gets pushed. A competent schedule does not just list tasks: it names the order in which the same square footage is handed from one trade to the next, and it holds that handoff.

Sometimes, and usually only on a remodel. Keeping one or two operatories live while others are rebuilt means the construction boundary has to be sealed for dust, the corridor has to stay clear for patients, and the trades have to work in windows that do not collide with the clinical day. That is a real constraint on the schedule, not a courtesy. It also changes the inspection path, because occupied portions of a suite are held to their own life safety requirements throughout. We cover the mechanics of that arrangement in phasing a renovation.

Sequencing an occupied project is where the contract route earns its money. A builder who is on board early can plan for shutdown windows on the plumbing and the electrical panel, when the practice loses suction or power for a defined period. A builder who arrives after the drawings are frozen inherits those windows as a surprise.

A change order is not simply a line item on an invoice. Every one of them carries three costs at once: the price of the added or removed work, the time it adds to the schedule, and the coordination it forces on trades already committed to a sequence. The third one is the one most often missed. Adding a wall in an operatory after the mechanical rough-in is inspected means the inspector returns, the electrician returns, and the drywall crew may lose its slot to another project. A two-day change can cost two weeks.

Fewer change orders come from better drawings, not from tougher negotiations. The decisions that prevent them are unglamorous: final equipment selections confirmed before rough-in, elevations agreed before millwork is ordered, and a written owner decision on finishes before the schedule reaches finishes. Where the selected equipment changes after rough-in, the change order is unavoidable. Where it changes because a decision was deferred, it is self-inflicted.

Inspections do not end at rough-in. After drywall, the schedule usually calls for insulation and energy code review, then a series of final inspections once finishes are complete: final electrical, final plumbing, final mechanical, and the building or health department sign-off that permits occupancy. Some jurisdictions require a separate inspection of the medical gas system. The required list varies by city and county; the review office publishes it, and a fit-out should not assume a neighbouring city's list applies.

The practical completion stage is where the project's paperwork catches up with its construction. It is the point at which the work is substantially done, the punch list is issued, and the owner takes possession while a defined list of items remains to be finished. The usual supporting documents arrive around now: as-built drawings, equipment warranties, operation and maintenance manuals, and the testing records for systems that were commissioned.

Before the punch list closes, walk the suite against the drawing that was approved, not against your memory of it. Chair positions, the reach of the delivery unit, the position of the light, the width of the corridor, the location of the sharps container and the emergency shut-offs: these are the details that a plan promises and a build can quietly alter. Where the built result diverges from the drawing, record it, because the layout as built becomes the reference for the next remodel and for the equipment that has to fit inside it.

The last item on most punch lists is the one that keeps the suite from opening: the certificate of occupancy, or its local equivalent, which depends on every prior inspection being closed out. Until that document is in hand, the chairs can be installed and the staff can be trained but the practice cannot see patients.

ada.org practice management
The American Dental Association's practice management section publishes guidance and resources on running a dental practice, including the business and planning issues that surround a new office or a remodel. It is a reference library rather than a construction document, so it points to the categories a practice should think about without supplying drawings, specifications or local code requirements. A practice beginning a fit-out can use it to frame the decision list before engaging an architect or a contractor.