Walk onto any Ottawa renovation site at 7:30 a.m. and you can read the project's quality in 30 seconds. The trades who showed up first are unloading. There's a clear staging area. Someone is reading from a printed schedule. Someone else is on the phone confirming the next day.
Walk onto a different site at the same time and you'll see one truck idling at the curb, no foreman in sight, and a homeowner standing in the doorway waiting for someone to tell them what's happening today.
The difference between those two scenes is subtrade coordination. It's the single biggest factor in whether your project finishes when it's supposed to, and it has almost nothing to do with the cost of the trades themselves.
What coordination actually means on a real job
Subtrade coordination is the work of getting the right tradesperson on site, on the right day, with the right materials, after the previous trade has left clean conditions and before the next trade arrives. Sounds simple. It is not.
On a kitchen renovation in Glebe last spring we had 11 trade categories pass through over 9 weeks: demo, framing, electrical rough, plumbing rough, HVAC rough, insulation, drywall, tile, cabinet install, countertop template and install, finish carpentry, painting, plumbing finish, electrical finish, appliance install, and final clean. Each handoff is a moment when the project either keeps moving or stalls.
If even one trade slips by two days, the next two trades almost always shift by the same amount. By the time the slip propagates through five handoffs, you've lost a week. By ten, you've lost two.
The two-week rule
The single biggest predictor of on-time delivery in our experience: did the foreman call every trade two weeks before their start date to confirm the slot, then again three business days before to confirm again, then again the morning of?
That sounds excessive. It's not. Trades book months out. Their priorities shift weekly. The plumber who said yes in March will gladly take a more profitable emergency call the day before he was scheduled at your house, unless he's been re-confirmed and feels accountable.
Most renovations late in Ottawa are late because nobody made those phone calls. The foreman assumed the trade remembered the date. The trade assumed the schedule had moved (it usually has, once or twice). They both end up surprised on the start morning.
The renovation timeline is the schedule of phone calls the foreman makes, not the schedule on the proposal.
Named workers vs trade categories
A schedule that says "framing - week 2, electrical - week 3, plumbing - week 3, drywall - week 4" is a schedule of categories, not people. It's also worthless.
A real schedule says "Mike F. and Sam K. framing Mon-Wed week 2. Dave (Smith Electric) on site Thursday week 2 and Mon week 3. Tony (Ottawa Plumbing) Tuesday-Wednesday week 3. Drywall crew (Riverbend) on site Thursday week 3 starting in the kitchen."
That second schedule is bookable. The trades on it have been called and confirmed. Anyone reading the schedule can tell when something is starting to drift, because the named worker either is or is not in their truck on the right morning.
Ask any contractor for a schedule with named workers. If they can produce one, they're running coordination at a real level. If they can't, the schedule is aspirational.
The 30-day named-worker test
Before you sign, ask: "Can I see a 30-day schedule with the actual people who will be on site each day?" A contractor who runs in-house crews or has consistent sub relationships can produce this in a day. A contractor who's still figuring out who's available will produce a category-level schedule and call it "preliminary." That preliminary schedule will not survive contact with reality.
The trade dependency map
Some trades can work in parallel. Most can't. Knowing which is which is the foundation of any honest schedule.
What runs in parallel
- Electrical and plumbing rough when they're in different walls or floors
- Framing on the second floor while finish work continues on the first
- Tile in a bathroom while paint goes up in a bedroom
- Cabinet install in the kitchen while finish carpentry runs in the living room
What can't run in parallel
- Drywall before electrical and plumbing rough are inspected
- Tile before drywall finishing on shared walls
- Cabinet install before flooring in most layouts (we sometimes flip this; it's a contractor preference)
- Countertop template before cabinets are 100% installed and shimmed
- Painting before drywall texture is fully cured (24 hours minimum, longer in winter)
A contractor who lets a trade work out of order will save days in the moment and lose weeks downstream when the work gets pulled apart and redone. Coordination is partly the discipline to say "no, that trade waits."
The handoff document nobody writes
When one trade finishes and another starts, there should be a handoff document. Three lines. What did the previous trade complete. What conditions did they leave (clean floor, marked out for the next trade, materials staged). What does the next trade need to know that's specific to this site.
We use a one-page form and it gets emailed to the project group with photos. The painting crew arrives knowing the drywall mud line on the kitchen ceiling needs an extra skim. The cabinet installers arrive knowing the floor was poured 2mm low at the south wall and they should shim accordingly.
Without that document, the next trade arrives, eyeballs the conditions, and either does the work fine or hits a surprise that shows up as a delay or a defect later. We've seen both repeatedly.
How in-house teams compress the schedule
The math on coordination changes dramatically when more of the trades are employees of the same company. Coordination becomes a line management problem instead of a phone-call problem.
Our in-house team handles framing, finish carpentry, cabinet installation, and most of the demo and clean. That's six to eight trade slots that don't require phone calls because the people doing them sit in our shop every morning and hear the schedule from the foreman.
The licensed trades (electrical, plumbing, gas, HVAC) we still subcontract because Ontario law requires it. Those four to five subcategories are where most of the coordination work happens, and they're manageable when the rest of the schedule is locked.
The contractor who subs everything is running coordination on 10-12 independent businesses. The contractor with a strong in-house base is running coordination on 4-5. Same project, different complexity.
The Ottawa-specific coordination wrinkles
Three things make Ottawa subtrade coordination harder than other markets.
First, the busy season is short. Most Ottawa contractors are running 6-9 simultaneous projects from May through October. Subs are double-booked, schedules are tight, and any slip cascades hard.
Second, winter exterior work is constrained. Roofing, siding, exterior paint, foundation work all compress into the warm months. The same subs you need for your interior project are competing with exterior crews for warm-weather slots.
Third, the inspection schedule. ESA inspections, building inspections, and gas inspections all have their own queues. Booking an electrical inspection during peak summer can take 5-10 business days. That's 5-10 days where drywall can't go up because rough electrical hasn't been signed off.
None of these are fixable. They're all plannable. A contractor who's run 100+ Ottawa projects bakes them into the schedule. A newer contractor learns about them the hard way during the first one that runs in summer.
Reading the schedule the contractor gives you
When you receive a proposed schedule, look for five things:
- Named workers for at least the next 30 days
- Inspection dates called out explicitly with buffer time after them
- Material delivery dates tied to specific work weeks
- Decision deadlines with consequences if missed
- Handoff buffers of 1-2 days between trade transitions
If all five are there, you're in good hands. If two or three are missing, the contractor is either new to the format or hasn't done the work to make the schedule real. Either way, your end date will move.
Dream Touch builds full coordination schedules into every Ottawa renovation contract. We also publish trade hand-off forms on every site. Free 48-hour walkthrough at 613-862-4555.