They are different money, held by different people, for different reasons. The contractor contingency vs owner contingency question matters because adding the two figures together produces a comfortable total that nobody actually controls, and a project that runs out of both at the same moment.
Contractor contingency vs owner contingency, defined plainly
Contractor contingency sits inside the guaranteed maximum price. It is the contractor money for things the contractor is responsible for and cannot price precisely in advance. Coordination between trades, minor sequence changes, small quantity variances, the ordinary friction of building.
It is inside the ceiling. Spending it does not raise the price. On most contracts it is also open book, which means you can see it move, if you ask.
Owner contingency sits outside the guaranteed maximum price, in the owner budget. It is your money for decisions you might make and risks you have accepted. Scope you might add, a finish you might upgrade, a condition nobody surveyed.
Spending it does raise your total project cost. Nobody but you approves it.
Two funds, two rule sets, two people holding the pen.
There is a third arrangement worth naming, because it appears often enough to surprise people. Some contracts hold a shared pool, drawn by the contractor but split at closeout under a savings clause. That is neither of the two above. It behaves like contractor money during the job and like owner money at the end, which means the incentive to spend it changes depending on how the split is written.
Whichever arrangement you have, the figure itself tells you almost nothing. What tells you something is the clause: what it may be spent on, who approves a draw, how often the balance is reported, and where it goes when the job finishes.
Why the two are never added together
A project with three percent contractor contingency and five percent owner contingency does not have eight percent of protection. It has two separate funds that cover two separate categories of risk, and neither one backstops the other.
When contractor contingency runs dry, the contractor does not reach into your fund. The contractor either absorbs the cost, which is what the guarantee is for, or argues that the cost belongs to a different category and issues a change order. The second is more common than the first.
When owner contingency runs dry, the contractor does not slow down. Work continues and the overrun lands in your capital budget.
The eight percent number is a comfort figure. It exists in a spreadsheet and nowhere else. Anybody presenting a combined contingency percentage is presenting a column total, not a risk position.
Three kinds of contingency, often called one thing
The word covers several different funds, and a budget line marked contingency can mean any of them. Telling them apart matters because they answer to different risks and run out at different moments.
Design contingency covers the gap between an incomplete drawing set and a finished one. It exists because the price was built before the design stopped moving. It should shrink as documents are issued, and if it does not, the design is not progressing the way the schedule assumes.
Construction contingency covers what happens on the jobsite. Coordination between trades, minor quantity variances, sequence changes, the friction that no estimate predicts precisely. This is the one most people mean when they say contingency.
Escalation contingency covers price movement in materials and labor between the day the price was built and the day the work is bought. On a job with long lead equipment it can be the largest of the three, and it is the one most often folded silently into the others.
A single combined figure hides which risk is actually covered. When a contract carries one number and the schedule stretches by five months, nobody can say whether the escalation portion was ever sized for that, because there was no escalation portion.
Ask for the split. A contractor who has built the price properly can produce it, because the estimate was assembled that way before it was summarized.
The four questions that decide whether either fund survives
What may it be spent on? A contingency clause that lists permitted uses is a different instrument from one that says the contractor may draw as required. The second is not unusual, and it is not fatal, but it should be a decision rather than an oversight.
Who approves a draw? Notification after the fact is not approval. Approval means the owner sees the reason before the money moves, and can say no.
What happens to what is left? Unspent contractor contingency at closeout either returns to the owner, is split under a shared savings clause, or stays with the contractor. All three appear in real contracts. The clause is short and easy to miss.
Is it reported, and how often? A balance disclosed monthly, with each draw described, is a control. A balance disclosed at closeout is a history lesson. The readiness review reads all four of these before signature, when they are still negotiable.
A worked example
Illustrative figures. Not taken from any client project and not a quotation.
A $40,000,000 guaranteed maximum price carries contractor contingency of $1,200,000, three percent. The owner budget holds a further $2,000,000, five percent. The board is told the project has $3,200,000 of protection.
By month seven the contractor has drawn $900,000 against coordination issues between the facade and the structure. The remaining $300,000 will not cover the rest of the facade sequence.
The contractor classifies the next set of issues as design gaps rather than coordination, and issues change orders totaling $640,000. Under the contract that classification is arguable, and arguing it costs time the schedule does not have.
The owner pays from owner contingency. The $2,000,000 is now $1,360,000, and the building is not enclosed.
Neither fund was misused. They were simply counted as one number when they were never one number.
Run the same example with the funds kept apart and reported monthly. The contractor draw of $900,000 against facade coordination is visible in month four rather than month seven. At that point the remaining $300,000 is a known quantity, the facade sequence is still ahead rather than underway, and the conversation about who carries the next set of issues happens while there is still room to change the sequence.
The money does not change. What changes is when the owner finds out, and whether there is anything left to decide when they do. That is the entire argument for reporting the balance by cause every month rather than summarizing it at closeout.
What to do before you sign
- Ask for the two figures separately, in writing, and never accept a combined percentage.
- Read the permitted uses clause for contractor contingency and write down what it excludes.
- Require notification before a draw, not a monthly summary after it.
- Settle what happens to the unspent balance at closeout before signature.
- Require the balance and every draw in the monthly report, described by cause.
- Agree how a disputed cause gets classified, and who decides, before the first dispute.
The last one is the item most often left open, and it is the one that decides which fund pays. Contingency and allowances covers the rest of this subject.
What we do
We read both funds against the contract and write down who controls each one, what may be drawn, who approves it and where the balance goes at the end. Findings cite the clause and carry the exposure in dollars. Tracking the balance month by month after signature is a different job, and that is what Costwitness does.
Questions people ask
How much contingency should a GMP carry?
It depends on how complete the design is, how much is bought out, and how much of the scope sits in allowances. A price built on finished documents with everything awarded needs less than one set months before the drawings are done. A percentage quoted without reading the package is a guess dressed as advice.
Can the contractor spend contingency without telling the owner?
On some contracts, yes. The permitted uses clause and the notification clause decide it, and both are short enough to miss. If the contract requires only a monthly report of what was already spent, the owner has visibility rather than control, and those are different things.
What happens to unspent contingency at the end?
One of three things, depending on the clause. It returns to the owner, it is split under a shared savings provision, or it stays with the contractor. All three are written into real contracts. Read that clause before signature, because afterwards it is simply the deal you made.
This is general information about construction contracts and is not legal advice.