How long will your renovation project actually take?
Scope and square footage set the baseline
Renovation timelines scale with both the size of the project, measured in square feet or square metres, and its complexity, meaning how many trades are involved and how much of the existing structure is being changed. A simple cosmetic update, new paint, flooring and fixtures, moves much faster than a project that touches plumbing, electrical and structural framing, even across the same square footage. This calculator takes your project type and size and estimates a working-day range based on typical pacing for that kind of work.
Because trades often need to work in sequence rather than all at once, demolition before framing, framing before drywall, drywall before paint and flooring, larger projects do not simply take proportionally longer; they often take longer per square foot because more sequential steps are involved.
What stretches a timeline beyond the estimate
Material lead times are one of the most common causes of delay, especially for custom cabinetry, special-order windows, or imported tile and stone, any of which can add weeks before installation can even begin. Permit approval and inspection scheduling add further time that depends heavily on your local building department's workload rather than on the contractor's pace. Discoveries once walls are opened, such as outdated wiring or water damage, can pause a schedule while the issue is assessed and a plan is agreed.
Weather affects exterior work directly, delaying roofing, siding, and foundation work during wet or freezing conditions, and can indirectly delay interior work scheduled right after it.
Building in a realistic buffer
Experienced project managers typically add a buffer of 15 to 25 percent on top of a best-case schedule to absorb these common delays, and that buffer tends to be larger for older homes, larger projects, and anything requiring custom or imported materials. Use the calculator's range, not just its single midpoint figure, when communicating a timeline to family members or tenants who need to plan around the work.
If your contractor has given you a specific schedule already, you can compare it against this estimate to see whether it looks aggressive or conservative relative to typical pacing for a project of similar scope.
Coordinating timeline with budget
A compressed timeline, paying trades to work overtime or in parallel rather than in sequence, usually costs more, so there is often a direct trade-off between speed and price that is worth discussing with your contractor up front. Our renovation budget calculator and contractor quote comparison calculator can help you weigh a faster but pricier schedule against a slower, more economical one.
Confirm any firm move-in or event deadlines with your contractor early, since built-in schedule buffers are far easier to plan for than to create after the project has already started.
How it's calculated
We start from typical professional work-week durations for the project type, scale by project size, multiply by a DIY factor if you're doing the work yourself (evenings and weekends stretch timelines), and add your expected permit wait.
Worked example
A typical kitchen remodel done by a professional crew with a 2-week permit wait: 6 weeks of work + 2 weeks permit = about 8 weeks total. The same project done DIY would be closer to 13 weeks of work plus permit wait.
Frequently asked questions
+Why does DIY take so much longer?
DIY work usually happens in evenings and weekends rather than full business days, and often has a learning curve for unfamiliar tasks.
+Does this include material lead times?
No. Custom cabinets, countertops, windows or special-order tile can add weeks to months of lead time before work even starts; add that separately.
+Can delays happen even with a professional crew?
Yes. Hidden issues behind walls, inspection scheduling, and weather can all extend the timeline beyond the estimate.
+How can I shorten my timeline?
Order materials early, confirm permit requirements before demo day, and have a clear, unchanging scope to avoid delays from change orders.
+Is the permit wait the same everywhere?
No, it varies widely by municipality, from a few days to several months; check with your local building department for current wait times.
