Joint execution.
Mutual respect. Be all in.

Hathaway Dinwiddie requires all subcontractors seeking to bid projects greater than $50,000 to be prequalified. In order to prequalify, please complete the Contact Form to receive a prequalification invitation.

We may request submission of the following documents:

  • Business Classification Certificate (if applicable)
  • Contractors and City business licenses for California (if applicable)
  • EMR verification letter showing Experience Modification Rates for the last 3 years
  • OSHA 300A summary logs for work related injuries and illnesses for the last 3 years
  • OSHA violations documentation for the last 3 years (if applicable)
  • Injury Illness Prevention Program and/or Safety Manual
  • Evidence of Insurance Certificate which must include Endorsements and Waivers
  • Bonding Capacity and Bonding Rate verification letter
  • Line of Credit Verification letter issued by your banking institution
  • Current and prior year, audited or reviewed financial statements including footnotes
  • Work Experience Reference List showing your company’s 3 largest projects

We do not require the following scopes of work to complete the prequalification process:

  • Design and Engineering
  • Material Suppliers/Vendors
  • Planning and Surveying
  • Testing, Adjusting, Balancing

We understand and respect the highly confidential nature of the information above. Only the prequalification team at Hathaway Dinwiddie reviews the information provided. If you require a Non-Disclosure Agreement to be signed, please email a copy to

Prequalification Contact Form

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