Cut the premium, keep the comprehensive coverage, document the storage — the endorsement is the cheapest line item in your collector vehicle ownership stack.
A storage endorsement — sometimes called a “storage rider,” “laid-up” coverage, or a “reduced-use” policy adjustment — is the contractual modification on a vehicle insurance policy that drops collision and liability coverage while retaining comprehensive coverage for the period a vehicle is in documented storage. Hagerty, Grundy, American Modern, Heacock, and Chubb all offer some version of the storage endorsement on collector and luxury vehicle policies. Premium reductions on the storage window typically run 40–80%. The endorsement is the single cheapest line item in a collector vehicle ownership stack — and it is missed routinely. At REVCity Auto Storage — 7185 Bermuda Rd, Las Vegas NV 89119, 725-272-1803 — we issue storage documentation that supports the endorsement at the carrier-required detail level.
A storage endorsement is not a separate policy — it is a documented modification to your existing collector or luxury vehicle policy. The mechanics break down across four contractual changes.
Storage endorsement availability and structure varies significantly by carrier. The breakdown below is current as of 2026 for the major collector-vehicle insurers.
| Carrier | Endorsement Name | Premium Reduction | Documentation Required |
|---|---|---|---|
| Hagerty | Reduced-Use / Storage | 50–80% | Storage facility address, secured access verification |
| Grundy | Storage Rider | 60–75% | Indoor garaged confirmation |
| American Modern | Laid-Up Coverage | 50–70% | Storage facility documentation |
| Heacock | Storage Mode | 55–75% | Climate-controlled preferred |
| Chubb (Masterpiece) | In-Storage Endorsement | 40–60% | Detailed risk assessment for high-value vehicles |
| State Farm / Allstate | Comprehensive-Only Reduction | 30–50% | Lower premium reduction, broader availability |
| USAA | Storage Adjustment | 40–60% | Military member documentation, garaging address change |
Concrete numbers on three typical collector profiles. Premium figures are 2026 averages across the major collector-specialty carriers.
Carrier-specific paperwork varies. The general sequence is consistent.
Three common situations where owners assume they qualify for the endorsement but do not.
Climate-controlled 50–70°F. 40–50% humidity. BendPak 4-post lifts at every space. Hagerty, Grundy, Chubb, and Heacock storage documentation issued at no additional charge. Call 725-272-1803 to set up storage and the carrier documentation in a single visit.
