Inland Marine vs. Builders Risk: What’s the Difference?

Inland marine includes several forms, including installation floaters; builders risk is commonly for a building or structure during construction.

The California Department of Insurance describes builders risk as coverage added for a new building under construction or an existing structure undergoing alterations or repairs. It separately lists installation floaters among inland-marine forms. These can address related project exposures, but they insure different interests or property depending on the wording.

For a project, check whether the concern is the structure under construction, materials in transit, contractors’ equipment, or property during installation. Compare the named insureds, project address, covered property, transit and storage extensions, start and completion triggers, and limits. Review the construction contract and both policies for the handoff between materials delivery, installation, and completed work.

Sources

  1. Commercial Insurance Guide. California Department of Insurance; Property Insurance; Commercial Property; Inland Marine; Boiler and Machinery. Accessed 2026-09-25.
  2. Inland Marine Policy: Contractors’ Equipment. Markel American Insurance Company / American Association of Insurance Services; hosted by Florida Department of Management Services; PDF p.8 declarations; attached Contractors’ Equipment printed pp.1–13 (PDF pp.18–30); replacement-cost endorsement PDF p.34. Accessed 2026-09-25.

Updated . Answers describe typical policies, not your coverage; your policy wording decides what is covered. See the editorial policy or contact Spot with a correction and supporting source.

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