Contingency

How a construction contingency works

A contingency is money set aside for costs nobody can see when the price is set. On a remodel, that might be rot under a floor, wiring that has to be replaced, or framing that isn’t where the drawings show it. Instead of pretending those risks don’t exist, the budget puts a number on them.

Where the contingency sits decides who controls it. If it’s in the owner’s budget, the owner spends it, usually through change orders. If it’s in the contractor’s price, the contractor uses it to absorb the misses and surprises that come with any estimate. On cost-plus and guaranteed maximum price contracts, the contractor’s contingency is often visible as a line, and the contract sets the rules for using it.

A contingency is drawn down as problems come up. Each draw should be recorded with what it paid for, so everyone can see how much is left. At the end, the contract decides what happens to the remainder: it stays with the owner, stays with the contractor, or is split.

A contingency is different from padding. Padding hides extra money in every line so nobody can see it; a contingency is a stated amount with stated rules. The first erodes trust when it’s discovered. The second builds it, because the client can see the money and what happens to it.

Types of contingency

A single project can have more than one. A remodel might carry an owner’s contingency for hidden conditions and a contractor’s contingency for estimating risk, and they should be tracked separately.

Why contingency matters

For contractors

A contingency protects your margin from the problems you can’t price exactly. Without one, every surprise becomes either an awkward change order or a loss. On remodels of older homes, it also gives you a calm way to deal with what you find when walls come open. And it saves you from choosing between absorbing a loss and arguing with a client halfway through the job.

For homeowners and clients

A project budget that includes a contingency is more honest than one that doesn’t. If rot turns up under the bathroom floor, the money to fix it is already planned, and the job doesn’t stop while you look for it. A budget with no contingency on an old house is a budget that will probably be exceeded.

For lenders

Construction lenders often look for a contingency line in the project budget, since a loan that runs out before the work is finished puts both the project and the loan at risk.

How to set and manage a contingency

1. List the specific risks on the job: the age of the house, work behind finished surfaces, incomplete drawings, soil, weather.
2. Size the contingency to those risks rather than using the same percentage on every job.
3. Decide who holds it and write the rules: who can draw on it, for what, and who has to approve each draw.
4. Show it as its own line in the budget or contract, separate from allowances.
5. Record each draw with the reason, the amount and the balance left.
6. Report the balance with each progress invoice or pay application.
7. At closeout, settle the remainder the way the contract says.

Explaining the contingency to a client at the start, before anything goes wrong, turns a hidden-condition conversation from a negotiation into a routine update.

When the balance runs low, warn the client before it runs out. A short note that only $1,000 remains, with the work still ahead listed, lets the client plan instead of being surprised.

Contingency example with numbers

Say the construction cost for a remodel of a 1950s house is $80,000, and the owner agrees to carry a 10% contingency, $8,000, for a total budget of $88,000.

The three draws total $2,400 + $3,100 + $1,500 = $7,000, leaving $1,000. Each was documented with a signed change order. Because this is an owner’s contingency, the $1,000 stays with the owner, and the job comes in at $87,000. Because the balance was reported with each progress invoice, the owner always knew how much was left, which made the window upgrade an easy decision.

On the contractor’s side, say the same contractor priced $3,000 of contractor’s contingency into the fixed price for estimating risk. If the crew runs over on demolition by $1,200, that comes out of the $3,000. Whatever is left becomes profit, because on a fixed-price job the risk and the reward are both the contractor’s.

Common contingency mistakes

• Using the same contingency percentage on every job, whatever the risk.
• Spending contingency on scope changes without a change order.
• Counting a visible contingency as profit before the job is finished.
• Not telling the client how much is left until it’s gone.
• Mixing contingency with allowances, so neither can be tracked.
• Leaving the contract silent on who keeps the money left over.
• Leaving out a contingency on a job with obvious unknowns, just to keep the bid low.

A contingency works when it’s sized honestly, governed by written rules and reported regularly. Treated as a slush fund, it causes more disputes than it prevents.