Set a Repair Contingency From Specific Unknowns

Quick answer

List what is uncertain, what further diagnosis could resolve it and how much each item could add. Keep the resulting contingency separate from the agreed scope. Test both expected and higher-cost scenarios against project cash and the household budget.

Identify the uncertainty

An incomplete diagnosis, concealed damage or an allowance for a selected material can change the final price. Ask the contractor to explain what is known and what remains open. Record whether further inspection, testing or design work can narrow the estimate.

A flat percentage can serve as an entered scenario, but it cannot identify what your particular home may need. Use project-specific estimates when possible and avoid treating the same allowance as both an included scope item and extra contingency.

Worked example

The confirmed scope is $7,500. A written discussion identifies up to $600 for a concealed-area repair and a possible $250 disposal increase. The household chooses to test the full $850 together, making the funding scenario $8,350.

If $1,500 cash is allocated, required net borrowing becomes $6,850. With a 5% withheld fee, gross principal would be approximately $7,210.53, assuming no other deductions and lender acceptance of that amount.

The $850 is this scenario’s chosen allowance. It is not a national benchmark or a guarantee that the project will fit.

Check where the cash sits

If the contractor deposit consumes all project cash before the loan is usable, a sufficient total can still have a timing gap. Place the uncertain item on the date it would need payment and run the milestone ledger.

If proceeds remain unused, check the agreement’s permitted use and extra-payment terms before deciding what to do. Keep the reserve in the project records until scope and final invoices are resolved.

Approve changes deliberately

Request a written change order with the work, amount and effect on completion and payment dates. Recalculate the remaining cash and monthly financing obligation. A contingency allowance does not itself authorize every extra charge.

Use the origination fee tool to check gross principal and net proceeds after the scope is established. Check net funding.

Frequently asked questions

Should I borrow the largest possible contingency?

Compare actual uncertainty, cost, permitted use and repayment capacity. The lender’s offered limit does not establish project need.

Can a fixed bid still change?

Read the scope, exclusions and change provisions. Ask about the exact event that could alter price.

What if the uncertainty never becomes a cost?

Reconcile the final invoice and then make a recorded decision about remaining funds under the financing terms.

Sources and scope

The example is original planning arithmetic. Source checked November 11, 2026. FTC written-estimate and contract guidance