Every construction budget carries a line that looks like padding but is actually protection, and that line is the construction contingency. A construction contingency is a portion of the project budget set aside to pay for costs that cannot be fully predicted at the time of pricing, such as unforeseen site conditions, design gaps and price movements. For developers and property owners in Kelowna and across the Okanagan, deciding how much to hold, and how to control it, is one of the most important budgeting choices on a commercial project.
What a Construction Contingency Covers
Contingency exists because no set of drawings is perfect and no site is fully known before work begins. It pays for things that are likely to occur somewhere on the project but cannot be named in advance: a conflict between structural and mechanical drawings, rock or groundwater discovered during excavation, a trade price that moves between tender and purchase, or a minor scope clarification that was missed in the documents.
It is important to separate contingency from other budget lines. Contingency is not a fund for owner-requested upgrades, and it is not a place to hide a weak estimate. Owner changes belong in a separate allowance or are handled through formal change management. Keeping the purposes distinct is what lets an owner see, at any point, how much genuine risk money remains. It also gives lenders and partners confidence, since a clearly defined contingency shows that the budget was built on realistic assumptions rather than hope.
How Much Contingency Is Typical
There is no single correct percentage, but there are reliable ranges. On a well-defined commercial building with complete drawings, owners commonly carry five to seven percent of construction cost. At schematic design, when much is still undecided, ten to fifteen percent is more realistic. Renovations and tenant improvements in older buildings often need more, because hidden conditions behind walls and above ceilings are common.
Lenders and quantity surveyors will often test the number against these ranges, so it helps to document why your project sits where it does. The figure should shrink as certainty grows. That is the same principle behind construction cost estimating, where accuracy improves with each stage of design. An owner who still holds fifteen percent after permits are issued and trades are bought out is either carrying real risk or has not tested the number recently.
Factors That Raise or Lower the Number
Several conditions push contingency up in the Okanagan. Sites with unknown soils, steep topography or a high water table carry more ground risk. Projects that tender in a volatile market face material escalation, and complex mechanical or electrical systems create more coordination risk than a simple shell. A tight schedule can also raise the figure, since fast-tracked work is started before every detail is resolved.
Other conditions bring it down. A completed geotechnical report, fully coordinated drawings, early trade involvement and a firm delivery method all reduce uncertainty. Owners who invest in pre-construction services usually find that they can justify a lower, more defensible contingency because the risks have been identified and priced instead of guessed.
Controlling and Releasing Contingency
A contingency only protects the owner if it is governed. Good practice is to hold it under the owner’s control, to draw on it only for documented risk events, and to report every draw in the monthly cost report alongside the remaining balance. Transparency matters here, because a contingency that disappears without explanation erodes trust between the owner and the builder. A simple log that records the date, the cause, the amount and the approval for each draw is usually enough to keep everyone aligned and to make the final reconciliation straightforward.
Discipline around scope changes keeps the fund healthy. Our overview of change orders in BC construction explains how to separate true unforeseen conditions from owner-driven changes. Unused contingency should be released back to the owner at completion, or in stages as major risks, such as excavation and the building envelope, are safely behind the project.
How Team Construction Approaches Construction Contingency
We set contingency openly with the owner at each design stage, tie it to identified risks, and report every draw and remaining balance in plain language so there are no surprises. If you are budgeting a commercial or multi-family project in the Okanagan, talk to our team about building a contingency you can defend.