Coordinating subcontractors so trades don't take shortcuts or block each other

What owners say goes wrong with the trades

Asked what the most annoying part of building a restaurant was, replies in this r/restaurantowners thread include subcontractors taking shortcuts despite exact plans, and contractors losing large parts of the day buying parts. We saw that thread only as search excerpts. In Hire a contractor or do it myself?, also seen as excerpts, one owner who managed the trades directly said it was cheaper but a scheduling nightmare. These are individual accounts, not a survey, but they describe two different problems that need different fixes.

The first problem is plan drift. A trade does something that is easier for that trade, such as moving a floor sink to avoid a joist, rerouting a conduit, or setting a receptacle at a habitual height. The change seems small, but it conflicts with the approved layout or an equipment spec sheet. The second is sequencing collapse. Trades arrive before the work they depend on is ready, or leave work open that the next trade needs closed, and everyone loses days. Drift is controlled with checks against documents. Sequencing is controlled with a schedule someone actually runs.

Decide who coordinates, and write down the gaps between trades

With a general contractor, coordination is part of the contract scope, and the GC's superintendent runs it. With a construction manager, check whether the CM coordinates the trades or only advises you. If you act as your own GC, coordination is your job. It includes the parts no single trade will volunteer for. The most common gaps on restaurant jobs are at connection points. Who sets the hood, who wires the hood controls and fire-suppression interlock, who makes the gas connection to the range, who connects the dish machine's drain and electrical, and who supplies the indirect-waste piping to the floor sink?

Solve this with a furnish, install and connect matrix: one row per piece of equipment, with a named party in each column. Restaurant equipment is often furnished by the owner or a kitchen-equipment vendor, set by one party and connected by two or three trades. If a cell is blank, the work will be missed or argued about. Attach the matrix to each subcontract, so every trade has agreed to its cells before mobilizing.

A sequencing backbone with hold points

Every site differs, but most tenant buildouts follow a broad order with natural hold points, where work cannot continue until something is inspected or delivered. Build the schedule around those hold points rather than around each trade's availability. The table below is an illustrative order, not a prescribed one. Your permit drawings, inspection sequence and jurisdiction govern.

The weekly coordination meeting and three-week look-ahead

Hold the meeting on the same day each week, on site, with a foreman from each active trade. Keep it short and specific. The core document is a three-week look-ahead. For each of the next 15 working days it lists which trade is where, what it needs to be ready, which inspections are booked and what deliveries are due. Each trade confirms or flags a conflict. Anything that cannot be resolved in the room gets an owner and a deadline.

Record decisions in brief minutes sent the same day. Minutes protect both you and the trades. When a dispute arises later about who said what about a relocated sink, a dated set of minutes is far better evidence than memory. They also feed directly into the delay documentation described in our article on late contractors.

• Last week: planned versus done, by trade
• Next three weeks: area-by-area plan, inspections and deliveries
• Open requests for information and decisions needed from the owner or designer
• Deviations found since last meeting and their approval status
• Materials needed on site before each task, and who is buying them
• Safety issues, access, and hours permitted by the lease or building

Plan-compliance walks before anything closes

The cheapest time to catch drift is before drywall, ceilings or tile cover it. Walk every room with the approved drawings, the equipment schedule and manufacturer spec sheets. Check locations and heights of hand sinks, floor sinks and floor drains, gas outlets, receptacles and dedicated circuits, water and drain stub-outs, and blocking for wall-mounted equipment. Measure. Photograph each wall with a tape measure in frame. Do this in addition to the official rough-in inspections, not instead of them, because an inspector checks code compliance, not whether the receptacle matches your equipment's cord.

The health review raises the stakes in DC. The certification statement on DC Health's Food Establishment Plan Review Guidance Packet (DC, Dec 2019 ver. 8) says that 'any deviation from the above without prior permission' from the division 'will nullify final approval.' The packet also says a pre-opening inspection with equipment in place and operating is needed. DC Health's inspection explainer (DC) says pre-operational inspections check placement of sinks, refrigeration and heating elements. A moved hand sink is therefore not just a design preference. If a field change affects health-reviewed items, route it through your designer to the reviewing agency before it is built. Other jurisdictions have their own procedures for plan changes, so ask the local reviewer how field changes are handled.

Hypothetical worked example: four deviations at the pre-drywall walk

All figures are hypothetical. The owner's representative walks a kitchen with drawings and spec sheets the day before drywall is scheduled and finds four deviations. The plumber moved a prep-area hand sink about 30 inches to avoid a joist. The electrician set the fryer-battery receptacles at a height that the fryer's cord will not reach. The gas stub for the range sits behind where the hood's fire-suppression piping must run. A floor sink was set under the location where the walk-in condensate line is supposed to drain, but the line is shown going to a different floor sink.

Estimated correction costs are shown below, both before close-in and after drywall and tile. The difference is the value of the walk. Before close-in, the direct rework for the four fixes totals $2,250 and takes about 2 working days of field work. After close-in, the same direct rework would total $9,400, because walls, tile and finishes must be opened and patched, and would take an estimated 7 working days. The walk saves $7,150 ($9,400 minus $2,250) in direct rework in this scenario. Both figures exclude any designer fee or agency review for the hand-sink plan revision, which is not priced here. The 2 days are field time only, not a promise of approval. Close-in still waits until the revision is approved and any required re-inspection has passed. These are scenario estimates, not typical rework costs.

Stop the half-day parts runs

The complaint about contractors spending half the day buying parts points to a procurement problem, not a work-ethic problem. Ask each trade for a materials list for the next look-ahead window and confirm delivery or staging before the work day. Keep a small, labeled stock of common fittings and wire, for the trade's own use, so a missing coupling does not cost a morning. For long-lead items such as hood components, walk-in panels and specialty valves, keep a log with order date, promised date and confirmation from the supplier. Review it at every meeting.

If you are acting as your own general contractor

Self-managing trades can save the GC's markup. But you take on what the GC would have carried: scheduling, the connection gaps, site safety, permits that may require a licensed contractor, and the question of who insures what. Check your jurisdiction's rules on who may pull which permits before you commit. Our related article on licenses, insurance and workers' comp covers the insurance side using DC as the example. Be honest about your time. Coordination is a daily job during rough-in and close-in, and a restaurant owner who is also hiring, training and buying equipment may not be able to do it well.

Whoever coordinates, run the same short pre-close-in check for every area. Close-in waits until all of these are signed:

• Furnish, install and connect matrix complete and attached to each subcontract
• Three-week look-ahead issued and confirmed by every active trade
• Rough-in inspections passed, with reports on file
• Owner's plan-compliance walk complete, with measured photos of each wall
• Deviations listed, with designer and reviewing-agency approval where required
• Materials for the next phase on site or confirmed for delivery