Guide · Quotes

Compare roofing bids without guessing

By Sherpa Desk Published Updated

The short answer

Ask every roofer to price the same written scope and explain how concealed damage will be handled. Compare the specified materials, removal, flashing, disposal, permits, schedule and warranty documents before comparing totals. A brand name alone does not describe the installed roof.

Editorial status: source-checked on 2026-10-07; not reviewed by a lawyer, licensing authority, engineer or trade professional. United States. Licensing, contract and permit requirements vary by state, locality and trade. California sources describe California rules, not a national standard.

Specify the work around the material

Use a comparison sheet for removal, preparation, roof details, protection of the property and cleanup. Ask each bidder to mark an item as included, excluded or still to be assessed. This is a procurement checklist, not a roof design specification.

Check the roofer’s license with the relevant state or local issuer. For California projects, use the CSLB lookup below and match the business name to the bid.

Price uncertainty explicitly

Ask how the contractor will document damage discovered after removal. Agree how proposed extra work will be described, priced and approved before it proceeds. An open allowance and a fixed item are not interchangeable when you compare totals.

If a bidder proposes a different method, request a separate alternative so the base bids remain comparable. Technical suitability needs a qualified local professional.

Plan the handover

Request the exact product and workmanship warranty documents, final inspection information where applicable, and a list of maintenance responsibilities. Record who handles a future leak complaint and what evidence they need. Keep these details with the signed contract.

Sources

Primary government and consumer-protection sources checked for this guide:

  1. Contracts and Binding Agreements (California), California Contractors State License Board. Accessed .
  2. Check a Contractor License (California), California Contractors State License Board. Accessed .
  3. Warranties, Federal Trade Commission. Accessed .