Two homeowners sit across from me at the same kitchen island in Westboro. Same square footage. Same budget. Same neighbourhood. Both want a primary suite addition.
One spent six weeks on planning before signing the build contract. The other wanted to start immediately because "we already know what we want."
Eight months later the first project finished on time, on budget, no change orders, no fights. The second project finished four months late, well over budget, with three change orders, two arguments, and a 4 out of 5 marriage rating from the wife.
The build crew was identical on both jobs. The materials were the same tier. The contractor was me. The only variable was the planning phase. After 20 years of running this trade in Ottawa, I am ready to argue something that sounds heretical: 80% of renovation success is decided before any tool touches the wall.
The misconception about construction
Most homeowners think renovation is mostly construction. That is what looks like work: demolition, framing, drywall, tile, paint. Visible, loud, obviously a project. Planning looks like nothing. People at a table. Pencil marks on paper. Trips to the tile shop. From the outside it looks like the project has not started. So homeowners compress planning ("we know what we want, let's go") and assume the build is where success or failure happens. They have it backwards. By the time the build starts, 80% of the outcome is already decided.
Scope clarity is the foundation
The number-one cause of failed renovations is scope ambiguity. The homeowner has a vague picture of "the kitchen we want." The contractor has a different vague picture. Nobody wrote it down in a way that names every cabinet, every fixture, every assembly, every finish.
The build phase cannot fix scope ambiguity. It only reveals it. The wall is down, the cabinet vendor wants the door style, the homeowner does not know, the contractor guesses, and now you are in change-order territory at week 4 of a 12-week build. A real scope-of-work document, finalized before signing the build contract, names every item: cabinet SKU, appliance model, fixture brand, tile collection, paint code, counter slab name. The build crew never has to guess.
What "design done" actually looks like
Floor plan with dimensions. Elevation drawings of every wall in every renovated room. Electrical layout with every outlet, switch, and fixture located. Plumbing layout with every supply and waste line. Finish schedule with brand and model for every material. Cabinet drawing with every box dimensioned. That is the package. If you are missing any one of those, the build will hit the gap and stall.
Design completeness vs. design started
"We did design" usually means the homeowner met with a designer for two sessions and got a mood board. That is not design. That is design started.
Design completeness is when every decision is on paper and every paper is dimensioned. The difference between started and complete is where almost every renovation fails.
I have walked into kitchens where the cabinet drawing was 90% done, the appliance package was 80% locked in, and the tile was "we'll pick when we get there." That 10% gap is not 10% of the risk. It is 80% of the risk, because the gap will surface mid-build, when changing direction costs 5x what it would have cost in the design phase.
BCIN-stamped drawings catch what you cannot see
The Ontario Building Code does not require BCIN-stamped drawings on every renovation. It does require them whenever the project touches structure, alters egress, or changes occupancy. In practice that covers almost every meaningful renovation.
BCIN designation means the designer has passed Ministry exams on Ontario Building Code Part 9 (residential), Part 11 (renovations), Part 7 (plumbing), and structural assessment. They can stamp drawings that the City of Ottawa permit office will accept without redirection to a P.Eng for routine residential work.
BCIN-stamped drawings catch code conflicts before they become construction problems. Egress window sizing (OBC §9.9.10). Stair geometry. Floor joist sizing under new bathroom tile loads. Headroom over stairs. Smoke alarm placement. Bedroom ventilation. All reviewed by a designer who knows what the inspector will check. The project that is permit-ready on paper before demo does not stall at framing inspection. The project that pulled a permit on contractor-drawn sketches almost always does. That stall costs two weeks.
Material selection done before demo
Cabinet lead times in Ottawa right now are 8 to 14 weeks for in-house custom, 6 to 10 weeks for semi-custom, and 4 to 6 weeks for stock. Tile beyond stock items is 4 to 6 weeks. Custom millwork is 10 to 16 weeks. Specialty plumbing fixtures are 6 to 12 weeks. Windows are 6 to 14 weeks.
If you start demo before all of those are ordered and on site, the project has no choice but to stall. The wall comes down. The cabinets are still in production. The crew has nothing to install. The right sequence is the opposite: finish design, order all materials, wait for delivery, then start demo. We do not break a single wall until the cabinets are in our shop and the tile is in our warehouse. That single rule cuts our kitchen build from 14 weeks to 7. Most contractors will not do this because they want deposit money flowing and demo creates the appearance of progress.
The change-order problem is a planning problem
Change orders are not random. They are the predictable consequence of decisions that were not made during planning.
The homeowner did not pick a backsplash, so when the cabinet install reveals the wall, they suddenly need to decide. Now the tile is special-order with a 6-week lead time. Now the trim around the upper cabinets cannot be installed because the backsplash has not been decided. Now the project is on hold.
Or the electrical layout was rushed, and once the drywall is up, the homeowner realizes there is no outlet at the coffee bar. Cutting in a new outlet after drywall costs many times more, plus paint touch-ups, than locating it during rough-in.
Every change order has the same root cause: a decision that should have been made in planning was deferred to construction. The fix is not "be more disciplined during construction." The fix is "make every decision in planning."
The most expensive minute of a renovation is the minute you spend deciding something while the trades stand and watch.
Real numbers on the planning ROI
Across the last 200 projects we have completed, the planning-to-construction time ratio that correlated with on-time, on-budget delivery looked like this:
- Kitchen renovation: 4 to 8 weeks of planning before a 6 to 12 week build
- Bathroom renovation: 3 to 5 weeks of planning before a 4 to 8 week build
- Basement finishing: 4 to 6 weeks of planning before an 8 to 14 week build
- Home addition: 8 to 16 weeks of planning before a 14 to 24 week build
- Full home renovation: 12 to 20 weeks of planning before a 6 to 10 month build
- Second-storey addition: 14 to 24 weeks of planning before a 4 to 8 month build
The pattern is consistent. Roughly half as much time on planning as on construction, sometimes more for complex projects. Projects with less planning time always finished late, always went over budget, and always generated more change orders.
Why most contractors skip the planning phase
The honest answer is cash flow. A small contractor needs a deposit to make payroll. He cannot spend six weeks designing your kitchen for free. So he sells you a verbal scope, takes the deposit Monday, demos Tuesday, and figures it out as he goes. The result is the renovation everyone in your neighbourhood complains about. Late. Over. Wrong cabinets. The fix is hiring a contractor whose business model includes a paid design phase. The design fee scales with project scope, from a single kitchen to a full home, and it is a fraction of the change-order cost on a project that skipped planning. Our drawing process puts that design phase at the centre of the project.
What good planning actually produces
By the end of a real planning phase, the homeowner has the following deliverables in hand:
- Measured as-built drawings of the existing space
- Floor plans of the proposed renovation, fully dimensioned
- Elevation drawings of every renovated wall
- Electrical layout with every outlet, switch, and fixture located
- Plumbing layout with every supply and waste line
- Cabinet drawings with every box, drawer, and door specified
- Finish schedule with brand and model for every material
- 3D renderings of the major rooms (we use these on every project)
- Permit application package, ready for MyServiceOttawa submission
- Fixed-price scope-of-work contract with line-item pricing
- Schedule with milestones and progress-draw triggers
If you sign a build contract without all 11, you are gambling. Some homeowners win that gamble. Most do not. The math says do the planning.
The case for design-build
The classic structure is "designer first, contractor later." The homeowner hires an architect or designer, gets drawings, then takes those drawings to three contractors for quotes. That works, but it has a friction point: the designer designs without knowing what is buildable for the budget, and the contractor quotes without having been part of the design conversation.
Design-build collapses that. One firm runs design and build. The designer knows the contractor's cost structure. The contractor reviews the design as it develops. Material choices factor in lead times. The 11 deliverables above live in one workflow. This is how we run every project at DTR. The build phase is smoother because the design was buildable from day one. The homeowner buys certainty instead of speed.
What to do this week if you are about to renovate
Slow down. The instinct to start fast is the instinct that ruins most projects. The right next step is not a contractor who can demo next week. It is a designer (BCIN-certified, ideally) who can spend 4 to 16 weeks designing your project completely first. We run free 60-minute design consultations at your kitchen table. Call 613-862-4555 or book a consult online. The 60 minutes save you months later.