Two subcontractor quotes land for the same renovation. One looks cheaper, but it leaves out access equipment, waste removal and restoring finished surfaces. A contractor subcontractor quote comparison must expose those gaps before you award the work.
Do not rank the totals. Set one scope, map every quote against it and send the open questions back for written prices. Add your retained costs only after each offer covers the same package.
Freeze the renovation package before comparing prices
Choose the work before costing it. If each subcontractor priced a different package, their totals are not comparable.
Build the package from the current drawings, specifications and site inspection. Do not use the first subcontractor quote as the scope. That gives one bidder control over the comparison.
Issue the same information to every subcontractor
Send one package containing:
- A plain description of the required work
- Drawing numbers and revision dates
- Product, material and finish requirements
- Quantities or the method used to measure them
- Existing conditions that affect labour or materials
- Access hours, parking and delivery restrictions
- Occupied areas and required protection
- The planned start window and completion point
- Work that must be complete before the subcontractor starts
- Required inspections, photographs, tests and handover records
- The date and format for the quote return
Mark old drawings as replaced. A quote based on an old layout is not a lower price for the same work. It is a price for different work.
Inspect the site before asking for a firm quote when the drawings do not show access, finished surfaces or existing services. Walk the route from the loading area to the work area. Open the ceiling space where permission and safe access allow. Show the subcontractor the occupied rooms and waste route.
Write down answers given during the walk-through. Send the same information to every bidder. A useful site detail shared with only one subcontractor breaks the comparison.
Draw a hard line around contractor-supplied work
Name who supplies labour, materials, access equipment, temporary power, protection and waste handling. Name who opens finished surfaces and who patches or restores them.
An exclusion moves responsibility. It does not remove the work from the renovation.
A subcontractor may assume you will clear the rooms, move materials, provide a lift and remove debris. You may assume those tasks are included. Settle the boundary before the quote closes.
Record every contractor-supplied item in the project budget. Material supplied by your business still needs purchasing, delivery, storage and handling. Your crew still costs money when its work does not appear on the subcontractor quote.
Build the contractor subcontractor quote comparison line by line
Do not follow the layout of each quote. One subcontractor may price by room. Another may price by work stage. Another may provide one total with a short exclusion list.
Bring every offer back to your package structure. That creates a subcontractor scope comparison based on the required work, not the bidder’s paperwork.
Use a separate scope sheet for each bidder. Give every sheet the same rows and headings. Mark each item included, excluded, allowed for or unanswered. A blank line is unanswered. It is not included.
Copy-ready scope sheet for each bidder
| Field | Entry |
|---|---|
| Subcontractor legal name | [Name on quote] |
| Quote reference and date | [Reference and date] |
| Package and drawing revision | [Package name and current revision] |
| Scope reference | [Drawing, room, schedule or specification reference] |
| Required work | [Work, product, finish and quantity basis] |
| Quote status | [Included / Excluded / Allowance / Unanswered] |
| Quote wording | [Exact wording that affects coverage] |
| Contractor-supplied item | [Labour, material, access, protection or support] |
| Clarification question | [Question sent to subcontractor] |
| Written answer | [Answer and date received] |
| Confirmed price effect | [Addition / Reduction / No change] |
| Schedule effect | [Start, duration or return-visit effect] |
| Payment or handover condition | [Installed work, inspection or record required] |
| Unresolved exposure | [Open item kept outside the comparable total] |
Repeat the scope rows until every required item has a status. If a quote bundles several rows into one amount, ask the subcontractor to confirm which rows it covers. You may not need a separate amount for every task. You do need a clear answer on coverage.
Then compare the bidder totals in a short summary.
| Bidder summary | Bidder A | Bidder B | Bidder C |
|---|---|---|---|
| Original quoted amount | [Amount] | [Amount] | [Amount] |
| Confirmed additions or reductions | [Amount] | [Amount] | [Amount] |
| Contractor-retained costs | [Amount] | [Amount] | [Amount] |
| Comparable package cost before tax | [Amount] | [Amount] | [Amount] |
| GST/HST included or added | [Treatment] | [Treatment] | [Treatment] |
| GST/HST amount shown | [Amount] | [Amount] | [Amount] |
| Total payable shown | [Amount] | [Amount] | [Amount] |
| Unresolved exposure outside total | [Open items] | [Open items] | [Open items] |
Keep the original quote, confirmed adjustments, contractor-retained costs, tax and unresolved exposure separate. Do not bury an unanswered item inside the comparable package cost.
Turn exclusions and assumptions into price questions
Read the exclusions before reading the total. Then mark every phrase that limits the offer: existing services suitable, standard access, clear work area, supplied by contractor, single site visit or patching excluded.
Turn each phrase into a question about the physical job:
- What condition did you assume behind the finished surface?
- What access equipment does your price require us to provide?
- How many site visits are included?
- Who removes packaging and demolition waste?
- What openings must be ready before your crew arrives?
- What testing and handover records are included?
- What changes in your price if the stated assumption is wrong?
Ask for the price effect. Do not insert a guessed cost for work the subcontractor understands better than you do.
Carry every accepted clarification into the award documents. An answer that changes scope or price cannot remain buried in an email thread.
Worked example: the lined ceiling
The Oak Street electrical job shows what a small exclusion does to a live job. Quote Q-1847 for R. Chen at 14 Oak Street covered a 150mm bathroom exhaust fan ducted through the roof and four LED downlights. The quote was 1,105 sample currency units.
The ceiling was lined, and the quote excluded chasing. Extra cable and chasing were approved on site as a 160 change order. Invoice INV-1847 was 1,265.
The comparison problem was the chasing, not the headline amount. It needed to be included by the electrical subcontractor, assigned to another package or retained by the contractor before award.
The costs of the change order are not given. Do not calculate profit using the 1,265 invoice and the original job cost. Use the example only to see how an exclusion leaves real work behind.
If a scope gap appears after the start, stop and document it. Use the electrical contractor change-order process to describe the changed work, record approval and carry the change to the invoice.
Run the Canadian pre-award check
Record the province or territory, job location and permitting jurisdiction before checking the subcontractor. Canadian licence, permit, worker-coverage, tax and payment-law questions depend on the location and work being awarded.
Do not copy an answer from a previous renovation. Route each question to the official body responsible for that subject and attach the answer to the subcontract file.
Match the business to the official registry
Match the quote and insurance evidence to the subcontractor’s legal business name. Check the official federal, provincial or territorial business registry that applies to how the business was created or registered.
A business may be federally incorporated and registered to operate in a province or territory. Use Corporations Canada (opens in a new tab) for a federal corporation question. Use the provincial or territorial business registry for registration in that jurisdiction.
A familiar operating name is not enough when the quote, insurance evidence and proposed subcontract identify different entities. Resolve the mismatch before issuing the work.
Check trade authority and permit responsibility
Ask the provincial or territorial trade licensing and safety authority which licence, certification or authorization covers the work. Give it the trade, job location and package description. Write down the answer and keep it with the subcontractor quote review.
Ask the official permitting authority for the job location whether a permit is required, who may apply and what inspections or closeout records the renovation needs. That authority may be municipal, regional, provincial, territorial or another local authority. Do not assign permit responsibility by habit.
Put the answer into the scope sheet. Name who applies, books inspections, pays required charges and supplies the final record. Do not leave “permits by others” unexplained.
Check worker coverage and insurance evidence
Ask the provincial or territorial workers’ compensation board what coverage or clearance evidence applies to the workers performing the package. Record what must be checked before the start and before a payment is released.
Read the insurance evidence against the awarded work. Check the insured legal name, described operations and policy period. Send unclear wording back for an answer rather than assuming the document covers the package.
Compare the schedule before choosing the price
A complete price can still fail the renovation if the crew cannot arrive when the work area is ready. Record the earliest start, site duration, crew plan and required return visits for each offer.
Match those promises to the live schedule. Ask what must be finished before the subcontractor arrives and what work cannot proceed until the package is inspected.
The drywall crew may expect clear rooms while plumbing and electrical rough-in remain open in the same area. A subcontractor may price an uninterrupted visit when your sequence requires returns. Ask for the schedule and price effect before award.
Name the owner of each test, photograph, certificate and closeout record. State when it must be delivered. “On completion” is weak if a payment point arrives before the required inspection records.
Level GST/HST, deposits, payment law and change orders
Run the subcontractor quote review after levelling the physical scope. Commercial terms can move cost and risk even when two package prices look close.
Give GST/HST its own fields. Record whether it is included or added, the tax amount shown, the total payable, the treatment shown for deposits and allowances, and any unanswered registration question. Use the Canada Revenue Agency GST/HST guidance (opens in a new tab) for business-number, registration and GST/HST questions.
For every deposit, record what the payment buys, whether it forms part of the accepted price and what evidence must arrive before payment. If it buys materials, name them and record where they will be stored and how they will be identified for the job.
Before setting deposits or payment points, check the official provincial or territorial government (opens in a new tab) source for the job location. Ask which lien, holdback and prompt-payment requirements govern the contract. Do not copy terms from a project in another jurisdiction.
Tie later payments to named installed work, inspections or delivered records. The builder progress payment schedule guide shows how to connect invoices to visible renovation milestones.
Write the change-order method into the subcontract. Require a description of the changed work, its price and any schedule effect before changed work proceeds. If emergency work prevents prior pricing, record the instruction and agreed pricing method before the crew continues beyond the immediate make-safe work.
Calculate comparable package cost before adding markup
Start with the clarified subcontract price. Then add the labour, materials and support that your business will retain for that particular offer.
Retained costs may include supervision, access equipment, protection, material handling, waste removal, temporary work and restoring finishes. Add an item only when your business will carry it.
A subcontractor who expects you to provide access equipment and waste handling may create a different package cost from one whose price includes both. The quote total does not show that difference. Your comparison sheet must.
Keep unresolved exposure outside the comparable total. An unanswered question about concealed work is not a confirmed cost. Leave it visible until it can be priced, assigned or converted into a defined allowance.
Use an allowance only when it has a written basis. Record what it covers, the quantity or specification basis, its GST/HST treatment, the approval trigger and how the final difference will be reconciled. Replace it with the approved actual amount when the work is known.
On the original Oak Street quote, job cost was 850 and profit was 255. Markup was 255 ÷ 850 = 30%. Margin was 255 ÷ 1,105, or about 23%. Those calculations use the original 1,105 quote only; the costs of the 160 change order are unknown, so the 1,265 invoice does not belong in the profit calculation.
Apply your subcontractor cost markup only after the comparable cost basis is complete. Use your own figures and policy. Do not copy a bidder’s percentage or hide unresolved work inside the markup.
When the package starts, carry the awarded amount and retained costs into the job record. The shared job-costing guide explains how to connect the accepted scope with actual labour, materials and subcontract costs.
Issue the subcontract as a controlled scope
Do not award the package with a one-line acceptance email. Attach the final comparison sheet, current drawings, accepted written clarifications and signed scope to the subcontract.
Use the final contractor subcontractor quote comparison as the control sheet for the work you bought. Keep unresolved items outside the accepted total until they are priced, assigned or written as controlled allowances.
The subcontractor and site supervisor should be able to open the same package and see the agreed work. Send every open question back in writing before you book the start.