A home-repair budget should include the written project estimate, permits and testing, temporary costs, and a separate contingency for work that cannot be seen yet. The worksheet below helps you compare bids on the same scope and calculate a realistic cash requirement before work begins.
Updated September 2026. This is a planning worksheet, not a contractor quote, appraisal, engineering opinion, or guarantee. Building codes, permits, taxes, labor costs, and cancellation rights vary by location.
Home-repair budget formula
Total planning budget = base project price + permits and professional fees + temporary costs + contingency − confirmed rebates or insurance proceeds.
| Budget item | Your amount | What to include |
|---|---|---|
| Base project price | $________ | Labor, materials, equipment, delivery, cleanup, disposal, and applicable tax listed in the written estimate. |
| Permits and professional fees | $________ | Permits, inspections, drawings, engineering, testing, or specialist advice that is not already included. |
| Temporary costs | $________ | Storage, meals, accommodation, pet care, parking, or alternate access required while the work is underway. |
| Contingency | $________ | A planning allowance for hidden damage, price changes allowed by the contract, or scope that cannot be confirmed before opening the work area. |
| Confirmed offsets | − $________ | Only rebates, grants, or insurance payments that have been approved in writing. |
| Total planning budget | $________ | Add the first four rows and subtract confirmed offsets. |
Choose a contingency deliberately
A contingency is not permission to spend more. It is money kept aside so an uncovered problem does not force a rushed loan or an unsafe shortcut. These editorial planning ranges are starting points, not industry standards:
- About 10%: tightly defined cosmetic work where surfaces, quantities, and materials are already known.
- About 15% to 20%: projects that open walls, floors, plumbing, roofing, or electrical systems.
- About 20% to 30%: older buildings or work involving known water intrusion, structural movement, hazardous-material testing, or incomplete records.
Adjust the allowance after the contractor and any qualified specialist explain the specific unknowns. If the contingency makes the project unaffordable, reduce the scope or wait; do not hide the gap by omitting predictable costs.
Compare estimates on the same scope
The U.S. Federal Trade Commission recommends getting multiple written estimates. Each should describe the work, materials, completion date, and price. Ask every bidder to price the same written scope so the lowest number is not simply the least complete proposal.
For each bid, record:
- exact products, quantities, model numbers, and finish allowances;
- who obtains and pays for permits and inspections;
- what demolition, protection, cleanup, and disposal are included;
- start date, substantial-completion date, and reasons the schedule may change;
- payment milestones tied to completed work rather than arbitrary dates;
- warranty terms and the process for approving a change order;
- contractor identity, licensing where required, insurance, and references.
Example calculation
Suppose a written estimate is $8,000, permits and testing are $500, temporary costs are $300, and the project warrants a 15% contingency on the $8,000 base price.
- Contingency: $8,000 × 0.15 = $1,200
- Total planning budget: $8,000 + $500 + $300 + $1,200 = $10,000
The contractor is not automatically entitled to the $1,200. Keep it separate and release it only for documented, approved changes.
Prioritize repairs before improvements
- Immediate safety: active electrical hazards, gas concerns, structural instability, sewage, or conditions that make the home unsafe. Use qualified emergency help.
- Stop ongoing damage: active roof or plumbing leaks, drainage failures, broken exterior openings, or moisture sources.
- Protect essential systems: heating, cooling where medically necessary, water, sanitation, electrical service, and weather protection.
- Preventive maintenance: smaller work that reduces the chance of a costly failure.
- Cosmetic improvements: paint, finishes, and optional changes after higher priorities are funded.
Canada Mortgage and Housing Corporation’s Homebuying Step by Step guide includes maintenance and repairs among the ongoing costs that owners should plan for. The principle applies even when the timing and amount cannot be predicted exactly: maintenance belongs in the household budget before a failure occurs.
Red flags that should stop the project
- pressure to decide immediately;
- a request for full payment before work begins;
- cash-only demands or an offer to arrange financing without clear written terms;
- no verifiable business address, license where required, insurance, or references;
- a proposal to skip required permits;
- large verbal changes that are not documented and priced in a signed change order.
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