THE ESTIMATING ANSWER
For one damaged bedroom floor, start with a defined scope and measurement basis. Measure the opened area, sheet layout, joist spacing and access route; record why the existing sheet failed. Separate sheet material, blocking and fasteners from removal and fitting labour. Price the listed tasks separately and state the condition that would require a revision: Rotten joists or continuing moisture requires a new repair design.
This guide uses a fictional project in Toronto, Ontario: One damaged bedroom floor. Its matching estimate and PDF give each scope decision a visible CAD cost line. Use the document to understand the structure; verify the actual building, product schedule, labour and supplier inputs before preparing a client quote.
1. Define the measured job
Lift the existing finish and replace a defined damaged subfloor area over sound framing, then leave a suitable surface for a separately priced finish floor. Measure the opened area, sheet layout, joist spacing and access route; record why the existing sheet failed. Record the measurements and existing condition in the estimate before turning quantities into line items. The scope should make clear why this is a separate project from a broader renovation or maintenance quote.
Measurement basis: Measure the opened area, sheet layout, joist spacing and access route; record why the existing sheet failed.
2. Build a product and labour schedule
Separate sheet material, blocking and fasteners from removal and fitting labour. This example has 7 distinct lines, including protection and floor opening, finish floor lifting, damaged sheet removal. Use actual supplier prices and labour inputs for a customer job; the displayed amounts are fictional document inputs.
Selections to confirm: Separate sheet material, blocking and fasteners from removal and fitting labour.
3. Sequence the work and handoffs
Confirm moisture source and framing condition after lifting before ordering the final sheet count. Show which task depends on access, a selected product or another trade. If that dependency is still open, label the price preliminary and identify the information needed before a firm quote.
Work sequence: Confirm moisture source and framing condition after lifting before ordering the final sheet count.
4. Set a change boundary
Rotten joists or continuing moisture requires a new repair design. The example excludes finished floor installation, joist replacement or moisture-source repair. Record the discovery, agree the revised work and update the estimate before adding it to the job.
If the job changes: Rotten joists or continuing moisture requires a new repair design.
Review the Canadian job address
Inspect the existing substrate, access and product selections at the property. Check any local trade or municipal requirements that apply and record unresolved conditions before preparing the final client document.
The finish floor lifting line uses 160 sq. ft., approximately 14.86 m². Keep the actual site measurement and the supplier’s selling unit together when you replace this quantity. The example amounts are fictional CAD document inputs, not current rates for Toronto, Ontario or another community. A site visit and current supplier information are needed to replace them.
Work through the itemized calculation
Check each extension of quantity and rate in the paired PDF. Two lines from this project are:
- Finish floor lifting: 160 sq. ft. × C$3.90 = C$624.00.
- Damaged sheet removal: 160 sq. ft. × C$5.20 = C$832.00.
Adding all 7 rounded line amounts gives C$4,211.00. The PDF shows 0% tax and the same total before any markup. The sample shows 0% tax only to make the arithmetic visible. Determine any applicable GST, HST or PST and markup for the actual work before sharing a quote.
| Work item | Quantity | Unit rate | Amount |
|---|---|---|---|
| Protection and floor opening | 1 job | C$235.00 | C$235.00 |
| Finish floor lifting | 160 sq. ft. | C$3.90 | C$624.00 |
| Damaged sheet removal | 160 sq. ft. | C$5.20 | C$832.00 |
| Subfloor sheet allowance | 6 sheets | C$75.00 | C$450.00 |
| Blocking and fasteners | 1 job | C$275.00 | C$275.00 |
| Sheet fitting labour | 160 sq. ft. | C$10.00 | C$1,600.00 |
| Disposal and level check | 1 job | C$195.00 | C$195.00 |
| Illustrative subtotal | C$4,211.00 | ||
Scope and pricing boundaries
Lift the existing finish and replace a defined damaged subfloor area over sound framing, then leave a suitable surface for a separately priced finish floor.
Outside this example: No finished floor installation, joist replacement or moisture-source repair.
Keep the product allowance, installation work and any unresolved condition visible as separate decisions. If access or the selected product changes, update the affected quantity or rate and explain the revision before the client relies on the estimate.
Before you send the estimate
- Measure the opened area, sheet layout, joist spacing and access route; record why the existing sheet failed.
- Separate sheet material, blocking and fasteners from removal and fitting labour.
- Confirm moisture source and framing condition after lifting before ordering the final sheet count.
- Rotten joists or continuing moisture requires a new repair design.
Check the business, client, property, dates, line extensions and notes. The subfloor replacement PDF example shows one way to present them. Its short PDF note lists the brief's scope exclusions; the fuller project limits above should guide your own scope.
Questions about this estimate
Which quantity controls this subfloor replacement estimate?
Measure the opened area, sheet layout, joist spacing and access route; record why the existing sheet failed.
When should this subfloor replacement quote be revised?
Rotten joists or continuing moisture requires a new repair design. No finished floor installation, joist replacement or moisture-source repair.
MAKE THE NEXT ESTIMATE YOUR OWN
Build a subfloor replacement estimate.
Enter the job scope in Estimates on iPhone or Android or start from an AI-assisted draft. Check every quantity, rate, allowance, client detail and note before exporting the PDF. Some app features may require an in-app purchase.
