On a custom build or a major renovation, a large share of the budget exists as property before it exists as a house. Stone is quarried and cut. Windows are fabricated. Millwork is built in a shop. Appliances ship from Europe. A range, a slab, a set of doors or a glazing package can each represent a meaningful fraction of the project, and for weeks or months that property sits in a truck, a container, a port, a warehouse or a garage.
Property insurance follows location and ownership. Both of those are moving. This page walks how to keep coverage attached to materials that are not yet a building.
Start with ownership, because everything else follows from it
Insurance responds to an insurable interest. Before you ask which policy covers a crate, ask who owns the crate.
Three common patterns on a high value residential project:
The owner buys direct. You contract with the stone yard, the appliance dealer or the overseas fabricator, pay a deposit, and take title at some point defined by that purchase agreement. Your interest is at risk from that point forward. A contractor’s policy has no obligation to it.
The contractor buys and bills. The contractor purchases materials, carries them on their books, and bills you as work is put in place or on a schedule of values. Until you have paid, the contractor generally holds the interest. Their builders risk or installation floater is the natural home for the exposure. Once you have paid, the picture shifts.
A subcontractor supplies and installs. The cabinet maker or the glazier owns the goods until installation is accepted. Their installation floater, if they carry one, is the policy in play, and it typically ends at acceptance.
The most common failure is not that a policy excluded something. It is that three parties each assumed one of the other two was insuring the crate.
When title passes, and what shipping terms actually do
Shipping terms are contract language that fixes the moment risk of loss transfers from seller to buyer. Domestic supply agreements commonly place transfer either at the seller’s loading dock, meaning the buyer bears the journey, or at the buyer’s delivery point, meaning the seller does. International shipments use a separate set of standardized trade terms that perform the same function across a much longer chain involving inland carriage, ocean freight, customs and final delivery.
Two practical points for a homeowner.
First, the freight carrier’s liability is not insurance on your goods. Common carriers carry cargo liability, which is generally limited by tariff or contract to a figure per pound or per shipment that has nothing to do with the value of what was inside. A pallet of hand cut tile weighs very little and is worth a great deal. Relying on the trucking company’s liability is how a five figure loss becomes a three figure recovery.
Second, the terms are negotiable and frequently ignored. On a project with several six figure material orders, reading the risk of loss clause in each purchase agreement is an afternoon of work that decides whether a policy is needed for that leg at all.
This is contract and commercial law, and what follows from it is a coverage design question. Neither is legal advice, and on a large import order it is worth having the purchase agreement reviewed by counsel.
Inland marine, in plain terms
Property insurance splits roughly into property that stays put and property that moves. Inland marine is the family of coverages built for property that moves, or that sits somewhere other than a fixed insured location. It is where transit, temporary storage, and property in the course of installation live.
The forms that matter on a residential construction project:
Builders risk transit and storage extensions. Many builders risk forms extend the project coverage to property in transit to the site and at a temporary offsite location, each subject to a sub limit. Those sub limits are usually far below the project limit, and they are frequently set at a default that nobody adjusted for a project with a seven figure materials order. This is the number to check first, because it is the one most often wrong.
Installation floater. An inland marine form written specifically for materials, machinery and equipment that will be installed in a structure. It typically covers the property in transit, at temporary storage and at the site until installation is complete and accepted by the owner. Most often purchased by the installing contractor, and most often sized to that contractor’s typical job rather than to yours.
Transit or cargo coverage. Written on the shipment itself, and the natural answer for a single high value import leg where neither the builders risk extension nor an installation floater reaches far enough.
The practical questions to ask about whichever form is in play are always the same four: what is the sub limit, what is the deductible, does it cover the property at a named offsite location or any offsite location, and on what basis is a loss valued.
Offsite storage is where the coverage quietly stops
A surprising amount of a high value project’s material spends time somewhere that is not the job site: a rented storage unit, the owner’s other property, a supplier’s warehouse, a millwork shop, a container in the driveway of a house two streets over.
Every one of those is a different underwriting situation, and forms vary on all of the following:
- Whether the location must be specifically named on the policy.
- Whether there is a distance limit from the project site.
- Whether the location must be enclosed, locked, alarmed or under the control of a third party.
- Whether property at a location the insured owns is treated differently from property at a commercial storage facility.
- Whether sprinkler protection at the storage location is a condition.
A related trap: a storage unit rented in the owner’s name may draw the property toward the homeowners policy’s off premises personal property limit, which is generally a fraction of the contents limit and was never intended for building materials. Do not let a default storage decision by a project manager pick your policy for you.
Custom and long lead items: the exposure is the calendar, not the price
For an item with a nine month lead time, the replacement cost is the smaller half of the loss. The larger half is what happens to the schedule when it arrives destroyed.
Standard builders risk forms generally exclude delay, loss of use, loss of income and consequential damages. Soft cost coverage, which can pick up items such as additional construction loan interest, extended design and engineering fees, permit re-filing and additional general conditions, is typically a separate purchase and is typically not bought on a residential project.
If a single long lead item is on the critical path, that is the moment to ask three questions in writing:
- What is the sub limit that applies to this item while it is in transit and in storage?
- Is the valuation basis replacement cost, or something narrower for a one of a kind piece?
- Is any delay or soft cost coverage available, and at what limit?
The same logic applies to salvaged, antique and matching materials on a historic property, where a destroyed item is not replaceable at any price and the loss becomes a mismatch problem across the whole elevation.
Deductibles, and the mess of four policies pointing at one crate
A transit loss on a high value residential project can plausibly touch:
- the freight carrier’s cargo liability, limited by contract,
- the supplier’s own property or transit coverage,
- the installing contractor’s installation floater,
- the project’s builders risk transit extension,
- and, if the item has arrived and been installed, the homeowners or high value home policy.
Each has its own deductible, its own valuation basis and its own set of exclusions. Left alone, that produces a claim where the recovery is materially less than the loss and the argument runs for months.
Three decisions fix most of it, and all three are made before the first delivery:
Decide which policy is primary for transit and for storage, and write it into the construction contract. The insurance article should say who insures materials before installation, on what form, at what limit and with what deductible.
Size the sub limit to the largest single shipment, not the average one. The number that matters is the value at risk in one truck or one container on one day.
Match the deductible to the item. A deductible that is sensible against a total structure loss can be larger than an individual material loss, which means the coverage never responds to the losses that are actually likely.
Contractor responsibility versus owner responsibility
The clean way to think about it is by stage.
Before the owner pays. The contractor or supplier holds the interest and should be insuring it. Your protection is contractual: a requirement that they carry transit and installation coverage at a stated limit, and evidence of it before the order is placed.
After the owner pays, before installation. This is the gap. Deposits and progress payments transfer money before they transfer possession. If the contract says nothing, the owner has paid for property they do not control and may not be insuring. This is the specific place where an owner purchased builders risk with a transit and storage extension earns its keep.
After installation and acceptance. The material becomes part of the structure, and the structure’s coverage, builders risk for now and the homeowners form later, picks it up. The point where that handoff happens is the subject of moving from builders risk back to homeowners.
For the wider question of which policy a renovation belongs on, see homeowners versus builders risk on a major renovation. For what drives builders risk pricing generally, builders risk insurance cost drivers and what is builders risk insurance cover the fundamentals.
A short list to run before the first big order ships
- Who holds title at each stage, in writing, for each major material order.
- The risk of loss clause in each purchase agreement, read rather than assumed.
- The transit sub limit and the offsite storage sub limit on whatever builders risk is in force.
- Whether the offsite storage location has to be named, and whether yours is.
- The deductible against the value of the largest single shipment.
- Whether the installing contractor carries an installation floater, and its limit.
- Whether delay or soft cost coverage exists, and whether the critical path item needs it.
- Where scheduled items that already exist, such as art or antique fixtures being reinstalled, are insured during the work. See scheduling jewelry and valuables.
Where to go from here
The service page for this work is high value home renovation insurance. For a ground up build, custom home insurance is the better starting point.
If you want the construction contract’s insurance article read against the builders risk sub limits before the container leaves the port, request a coverage review.