When three contractors give you three different prices, the numbers may describe different jobs. Before choosing a bid, ask each contractor to put the same project scope in writing. Compare the work, materials, schedule, exclusions, and payment terms side by side. The lowest number is only useful if it covers the work you expect.
Start with the same description of the job
Write down what you know about the problem and what result you want. Include photos, dimensions if you have them, access limitations, and any work that might uncover hidden damage. Give the same information to each bidder. Ask each contractor to identify assumptions they had to make and what would trigger a change order.
Use a side-by-side comparison
| Item | Questions to ask |
|---|---|
| Scope | Which rooms or surfaces are included? What removal and disposal are included? |
| Materials | What product, model, grade, or warranty is specified? Who supplies it? |
| Existing conditions | What happens if work exposes damaged decking, old wiring, or moisture? |
| Permits and inspections | Who checks local requirements, obtains any needed permits, and schedules inspections? |
| Schedule | What is the anticipated start, duration, and plan for delays? |
| Price and payment | What is the total, what is excluded, and when are payments due? |
Check the contractor, too
The Pennsylvania Office of Attorney General recommends checking references, obtaining more than one bid, and verifying applicable home improvement contractor registration. It explicitly says registration is not an endorsement of quality or skill. Check the name on the estimate against the registration and ask for relevant insurance information and recent references before signing.
Before you accept an estimate
- Ask about differences between bids rather than assuming every contractor included the same work.
- Get any promised materials, cleanup, and warranty terms in the written agreement.
- Confirm who handles permits with the municipality where the property is located; Pittsburgh city requirements may differ from those in nearby boroughs and townships.
- Keep copies of the final scope, revisions, invoices, and payment records.
Editorial note: This checklist is a planning tool, not a price quote or legal advice. Last reviewed September 19, 2026. Source: Pennsylvania Office of Attorney General, Home Improvement Contractor Verification.