The 12-project-type reference matrix every general contractor needs, federal vs commercial vs heavy-civil vs healthcare vs maritime, with the unique endorsement set, limit floor, and carrier-rating threshold each project type actually requires.
COI Endorsement Requirements by Project Type
Why a project-type-specific COI endorsement matrix beats a generic checklist
There is a fiction every InsurTech sales deck repeats: that the certificate of insurance is a portable, project-type-agnostic artifact. Send the same sub COI to a federal agency, a hospital owner, an oil refinery owner, and a mid-rise residential developer, and somehow the same five endorsements will satisfy all four. They will not. The same sub, on the same day, with the same carrier, can be fully compliant on one project and materially uninsured on another. Because the endorsement requirements are project-type-specific in ways most generic COI guides quietly skip.
A federal commercial GC running a $40M VA hospital build needs a CGL with $2M/$4M limits, a CG 25 03 per-project aggregate, an A.M. Best A- minimum carrier, a Miller Act bond coordinated against the additional-insured language, AND an infection-control compliance addendum tied to Joint Commission requirements. Strip out the hospital piece and add a navigable waterway, and now the same prime needs USL&H, P&I coverage, and a CA 99 48 vessel-pollution endorsement that has nothing to do with the prior project. Strip both and put the prime on a tenant-fit-out inside an office tower, and the unique requirement becomes landlord additional-insured language and OCIP coordination, not Miller Act, not USL&H, not infection control.
The 12 project types below cover the meaningful surface area of large-volume construction in the United States: federal commercial, state and local public works, heavy and civil, healthcare and hospital, residential and mixed-use, tenant fit-out and interior, industrial and refinery, renewable energy and utility-scale, federal CMMC L2-required (the emerging cyber-flow-down case), multi-tier flow-down construction, rapid-build and modular, and maritime and over-water. Each comes with a unique endorsement set, a limit floor, a carrier-rating threshold, and a set of audit-finding patterns that the prime’s risk team has to know cold before mobilizing.
What makes a project-type-specific endorsement matrix different from a generic COI guide:
- Limit floors vary by project type, not by sub. A $1M/$2M CGL is fine on most commercial work and materially under-limit on most federal heavy-civil. The matrix below ties the floor to the project type, not to the sub’s preference.
- Per-project aggregate is non-negotiable on certain project types. Federal, multi-tier flow-down, and large healthcare projects effectively require CG 25 03. Single-project commercial work can sometimes operate without it. The matrix calls out which is which.
- Specialty endorsements attach to specialty project types. Pollution legal liability (CG 21 49 not excluded) on heavy-civil. Cyber liability flow-down on federal CMMC L2. Joint Commission addendum on healthcare. Vessel-pollution on maritime. Most COI guides treat these as exotic; the matrix treats them as table stakes for the project type.
- Carrier-rating thresholds shift by project type. Federal generally requires A- or better. Healthcare and refinery owners frequently push to A or A+. Residential mixed-use can sometimes accept A-. The matrix makes the threshold explicit.
- State-specific overlays compound the project type. New York commercial work picks up Labor Law 240 exposure on top of the base commercial requirements. California heavy-civil picks up SB 800 residential overlay on mixed-use. The matrix flags the overlays so they can be checked separately.
This matrix is the practitioner’s version. It’s the artifact a prime risk manager actually uses to set the COI requirement floor at proposal-stage. Before the subcontract is drafted, before the sub is asked to send a certificate, before the project mobilizes. Run it on every new pursuit. Re-confirm it on every project type the prime hasn’t run in the prior 24 months. File the completed matrix alongside the project’s risk-management plan.
Who this matrix is for
- Federal general contractors running federal commercial, federal heavy-civil, or federal CMMC L2-required pursuits
- Mid-market commercial GCs moving between commercial, healthcare, industrial, and tenant-fit-out work
- Prime contractors establishing the COI requirement floor at proposal and subcontract draft stage
- Risk managers and compliance officers building the project-type playbook for the firm
- Insurance brokers advising primes on flow-down requirements across mixed project portfolios
- Estimators and preconstruction teams who need to know the carrier-rating threshold before pricing the work
If you’re already running a federal-only book and need the deeper line-item review, you want our ACORD 25 review checklist (federal projects) instead. It’s the cert-by-cert review that operates downstream of this matrix.
The 12 project types and their unique endorsement requirements
The matrix covers 12 distinct project types and the unique endorsement requirements that attach to each. Use it to set the COI requirement floor before any subcontract is drafted on a given project type:
- Federal commercial construction CGL minimum $1M occurrence / $2M aggregate, products-completed-operations aggregate $2M, with $5M umbrella follow-form. Per-project aggregate (CG 25 03) is non-negotiable. A.M. Best A- minimum on every carrier. Additional insured CG 20 10 (ongoing ops) AND CG 20 37 (completed ops). Federal projects often have 5+ year completed-ops tails. Miller Act payment and performance bond coordination required at $150K contract threshold; the COI doesn’t replace the bond but the bond claimants’ rights interact with the additional-insured language. Statutory cancellation notice 30 days written, prime named as certificate holder by name and project number, not the agency.
- State and local public works Limits typically follow the state’s mini-Davis-Bacon and state procurement rules. Often $1M/$2M CGL minimum but with state-specific limit overlays. State-specific WC waiver-of-subrogation form (varies by state) is required in addition to the federal CG 24 04 on the CGL. Prevailing-wage tied to state mini-Davis-Bacon may carry a separate insurance addendum on labor compliance. Some states (NY, IL, CA) require pollution-liability addendum on public-works trenching, demolition, or environmental-remediation scope. Carrier-rating threshold varies. Most states accept A-, some specify B+ acceptable for smaller projects.
- Heavy and civil construction Higher umbrella stack. $10M minimum, $25M+ on large projects. Pollution legal liability is required and the CGL must have CG 21 49 (Total Pollution Exclusion) NOT attached, or the policy must carry a separate Contractors Pollution Liability (CPL) endorsement covering the gap. USL&H is required when work is over or adjacent to navigable waterways (rivers, channels, harbor projects). This is a federal statute, not a state choice. Builder’s-risk coverage often required during the construction phase with a hard-cost-replacement endorsement. CGL aggregate generally pushed to $4M minimum given the magnitude exposure.
- Healthcare and hospital construction Joint Commission compliance addendum required on hospital owner contracts. This is owner-driven, not a standard CGL endorsement, but flows down to the prime as a contractual obligation. Infection-control compliance language (ICRA. Infection Control Risk Assessment) carries a separate insurance hook on most hospital projects. Professional liability (E&O) is required on design-build healthcare projects with $2M minimum, $5M common on large projects. Carrier-rating threshold frequently A or A+. The hospital owner’s risk team will reject A- carriers on the grounds that healthcare claims have long tails. Additional insured language often extends to the hospital’s clinical operations entity in addition to the real-property holding entity.
- Residential and mixed-use construction Multi-state lien-law variation drives certificate-holder language and additional-insured wording. What’s compliant in Texas may be invalid in California, especially on mixed-use towers with both residential and commercial components. CGL limits generally lower than federal. $1M/$2M is common, with $5M umbrella standard. Construction defect coverage warrants particular attention given the residential component’s long-tail claim pattern; CGL “your work” exclusions and “products-completed-operations” sublimits can leave gaps. State-specific construction-defect statutes (CA SB 800, FL Chapter 558, NV NRS 40) create overlay requirements. Subdivisions, condominiums, and HOA-owned components each carry distinct certificate-holder requirements.
- Tenant fit-out and interior construction Landlord additional-insured rider is required and is in addition to the standard CG 20 10 / CG 20 37. Landlords are not the same as project owners and require explicit additional-insured language under the lease’s insurance covenant. OCIP/CCIP coordination is required when the building has a shell-and-core wrap-up program in place; the fit-out contractor must coordinate their COI requirements against the wrap-up so coverages don’t duplicate or gap. CGL limits typically $1M/$2M with $5M umbrella; building-property limits often satisfied through the OCIP rather than the contractor’s CGL. Statutory cancellation notice often runs through the property manager rather than the landlord directly.
- Industrial, refinery, and petrochemical construction Highest pollution liability requirements in the matrix. Contractors Environmental Liability (CEL), separate policy from CGL, required at $5M minimum, $25M common. CGL CG 21 49 pollution exclusion must be removed AND CG 22 79 (Limited Fungi or Bacteria Coverage) reviewed for adequacy. Specific exclusion-rider review for hot-work, confined-space, and operational-hazard exposures unique to refinery and petrochem environments. Carrier rating A or A+ effectively required by the owner. Builder’s-risk coverage on construction-in-progress with operational-overlap endorsement when the work occurs in a live facility. Owner-controlled wrap-up programs are standard; the prime coordinates against the wrap-up.
- Renewable energy and utility-scale construction Manufacturer warranty coordination. Solar PV, wind turbine, and battery-storage manufacturers have OEM warranty terms that must be coordinated against the contractor’s CGL “your work” exclusion to avoid gaps when an OEM warranty claim and a CGL claim overlap. Builder’s-risk-during-commissioning is the common gap. Standard builder’s-risk policies often exclude operational testing; a hot-testing or commissioning extension is required. Cyber liability for SCADA and operational-technology exposures attached to utility-scale projects with grid-interconnection scope. Inland marine for transit and installation of oversized components (turbine blades, transformers, battery containers). CGL limits typically $2M/$4M with $10M umbrella minimum.
- Federal CMMC L2-required construction This is the emerging case. Federal projects with controlled unclassified information (CUI) flow-down requirements under DFARS 252.204-7012 and CMMC 2.0 Level 2. Cyber liability is required at $2M minimum on the prime AND must flow down to subs handling CUI in their workflow. The CMMC flow-down endorsement is rare today (no standard ISO form exists yet. Most carriers use proprietary endorsement language) but tracking is critical given the program’s enforcement timeline. CGL and umbrella limits follow standard federal commercial; the cyber overlay is the differentiator. Carrier rating A- minimum on cyber, A or better on CGL.
- Multi-tier flow-down construction Per-project aggregate (CG 25 03) is critical. Without it, a single large claim at any tier can exhaust the policy aggregate and leave every other tier exposed. Primary-non-contributory enforcement at each tier. Every sub, sub-sub, and sub-sub-sub must carry the primary-non-contributory wording on their CGL with the upstream tier as additional insured. OCIP layering is common on large multi-tier projects; the wrap-up program absorbs the standardized coverages and the contractor’s individual CGL fills the project-specific gaps. Endorsement-copy verification is non-negotiable at each tier. The box-check problem compounds the more tiers exist.
- Rapid-build, modular, and panelization construction Off-site fabrication coverage is the unique requirement. Work performed off-site (in a panel-fabrication facility, modular-build factory, or component-prefab plant) is often outside the standard CGL “covered operations” definition, and a separate off-site fabrication endorsement is required. Transit and installation rider covers the loaded-truck-and-craning phase, which is high-risk and often outside the standard inland-marine cargo coverage. Assembly-while-installed exclusion review is critical. Modular components going through final on-site assembly carry installation-floater gaps that need explicit coverage. Builder’s-risk on the off-site fabrication phase is owner-or-prime decision; the matrix flags it for explicit subcontract negotiation.
- Maritime and over-water construction Jones Act compliance is mandatory for any worker performing duties on a vessel. Separate from standard WC and not interchangeable with USL&H. USL&H is required for all longshore-and-harbor exposures (work over, adjacent to, or in navigable waters). Protection and Indemnity (P&I) coverage attaches to vessel operations and is a separate policy from CGL. Vessel-pollution endorsement (CA 99 48 on auto policies, equivalents on marine policies) covers the unique pollution exposure of vessel-based operations. Watercraft endorsement on the CGL must affirmatively cover the operational scope. Many CGL policies exclude watercraft over a certain length without an explicit add-back. Carrier specialization matters; the marine-construction insurance market is narrower than standard CGL.
How to apply the matrix at proposal-stage
Use this matrix at proposal-stage on every new project type, and re-confirm at subcontract-draft stage. For each new pursuit:
- Identify the project type from the 12 categories above. If the project blends two (e.g., federal hospital construction = Federal commercial + Healthcare), apply both rows of the matrix and take the higher floor on every requirement.
- Pull the project type’s row and confirm the limit floor, carrier-rating threshold, required endorsements, and specialty coverages with the prime’s broker before the proposal is finalized.
- Carry the project-type-specific COI requirement language into the prime’s subcontract template. The standard template usually undershoots specialty project types (healthcare, refinery, maritime, CMMC).
- At subcontract draft, the COI requirement section flows down the matrix row to every sub. Confirm the sub can meet the floor before signing; if not, escalate before mobilization.
- File the completed matrix in the project’s risk-management plan. When the contracting officer or owner audits the project’s insurance program, the matrix is the documentation that proves the project-type-specific requirements were correctly identified and flowed down.
Pursuit-stage cadence: re-confirm the matrix on any project type the prime hasn’t run in 24 months. Endorsement language, ISO form revisions, and owner-side requirements drift. The matrix should be a living document, not a static one-time setup.
Stop guessing which endorsements apply to which project type
The 12-row matrix above takes an experienced risk manager 30 minutes to walk through at proposal-stage on a single project type. Manageable on a single pursuit, brutal across a mixed pursuit portfolio. Multiply by 8 active pursuits across federal, commercial, healthcare, heavy-civil, and tenant-fit-out, and you’ve built a half-time job out of project-type-specific COI requirement-setting before any subcontract is even drafted. Contracts Connected’s COI Analyzer reads every certificate against the project-type-specific requirement floor automatically, federal, commercial, heavy-civil, healthcare, maritime, CMMC L2, all of it, and flags which endorsements are missing for the project’s actual type, not a generic template. Same matrix, applied automatically, on every cert from every sub on every project.
For educational purposes. These templates, checklists, and trackers are operator-built starting points designed to help you move faster on the kind of work that usually drowns construction admins in email chains. They are not legal, insurance, accounting, or tax advice. Each project, jurisdiction, and contract has its own quirks. Review the document, refine the language, and consult your attorney, broker, CPA, or compliance officer before relying on it for a live project decision.
Frequently asked questions about COI endorsement requirements by project type
Why can’t I use the same COI requirement language across all my projects?
Because the underlying exposures differ enough that a single requirement set is either materially under-protective or materially over-restrictive. A federal commercial requirement set is over-restrictive on a tenant-fit-out (forcing landlord-AI language and OCIP coordination through a federal flow-down lens that doesn’t fit). A standard commercial requirement set is under-protective on a maritime project (no Jones Act, no USL&H, no vessel-pollution coverage). The COI requirement language has to match the project type, not the prime’s preferred template, and the matrix is the cleanest way to keep that alignment intact across a mixed project portfolio.
What’s the difference between an additional insured endorsement on a federal project versus a healthcare project?
The endorsement form (CG 20 10 / CG 20 37) is the same; what differs is the scope of who must be named and the carrier rating that’s acceptable. On federal projects, the prime is the named additional insured by exact legal entity. On healthcare projects, the hospital owner often requires multiple entities to be named, the real-property holding entity, the hospital operating entity, and sometimes the parent health system, each of which is a separate additional-insured listing. Healthcare also frequently rejects A- carriers given the long-tail claim pattern, where federal accepts A- as the floor.
Do I need pollution liability on every project type?
No. Pollution liability is project-type-specific. Heavy-civil, industrial-refinery-petrochem, environmental-remediation, and certain state public-works projects effectively require it (either via CGL CG 21 49 not excluded, or via separate Contractors Pollution Liability or Contractors Environmental Liability policies). Standard commercial, residential, and tenant-fit-out projects often don’t require it, though smart primes still carry it as a portfolio policy. The matrix calls out which project types require it explicitly.
What’s the practical difference between USL&H and Jones Act?
USL&H (Longshore and Harbor Workers’ Compensation Act) covers workers performing maritime work on or adjacent to navigable waters. Dock workers, crane operators on a barge, harbor-construction laborers. Jones Act covers seamen. Workers whose duties are performed on a vessel as part of the vessel’s crew. They’re not interchangeable; a project with both vessel-based and shore-based maritime work needs both. The matrix flags maritime-and-over-water projects as the case where both apply.
How does the matrix handle mixed-project-type pursuits?
By applying both rows and taking the higher floor on every requirement. A federal hospital is Federal commercial + Healthcare. A heavy-civil bridge over navigable water is Heavy and civil + Maritime. A federal CMMC-required healthcare facility is Federal commercial + Healthcare + Federal CMMC L2-required (three rows). The matrix is additive. Combine rows, take the strictest floor on each line, and confirm the result with the prime’s broker before the proposal is priced.
What carrier-rating threshold should I require if my project type isn’t in the matrix?
Default to A- for any commercial work and A or A+ for any project type with long-tail claim exposure (healthcare, environmental, federal long-completed-ops, professional-services-heavy design-build). When in doubt, ask the broker to run the carrier through A.M. Best directly and confirm the rating on the date of COI review. Ratings change, and what was A on the prior cycle may have moved to B+ on the renewal. Carrier rating is the single most overlooked field in COI review across every project type.