Public or contract warehousing?

Last updated October 21, 2026

Once you decide to outsource storage, you are mostly choosing between two ways of buying it. Public warehousing rents you shared space and labor by the unit, on standard terms, and nobody is committed to much. Contract warehousing builds an operation around you under a negotiated agreement that runs for years. Plenty of providers sell both, sometimes out of the same building, so the question is less about the facility than about how you pay, how much say you get and who is stuck with the cost when volume moves. If the public model is new to you, read what public warehousing is first.

Two different deals

A public warehouse stores goods for many depositors at once. Article 7 of the Uniform Commercial Code defines a warehouse as “a person engaged in the business of storing goods for hire”, and the public warehouse is the textbook case. Your space grows and shrinks with your inventory, the labor pool is shared across clients and the operator’s procedures apply. You buy a service. You don’t get to design it.

A contract warehouse, also called dedicated warehousing or contract logistics, is set up around your requirements. You might get a whole building, a walled-off zone or a block of racking, with a team trained on your products, your order profile and your customers’ compliance rules. Processes, reporting and service levels go into the contract. In return you sign up for a term and usually pay for the capacity whether you fill it or not.

The labels get used loosely. Some providers call any negotiated agreement “contract warehousing” even when the space and people are shared with other clients. When you compare quotes, ask what is actually dedicated to you: space, people, equipment, systems, or just the price list.

Pricing

Public pricing is transactional. Expect a monthly storage rate per unit (pallet, case, hundredweight or square foot), handling charges per unit in and out, and accessorial charges for labeling, kitting, rework or after-hours work. The IWLA standard contract terms, an industry template first approved in 1968 and last revised in January 2026, show the usual structure. Unless agreed otherwise, storage is charged per package or agreed unit per month. Goods received between the 1st and the 15th pay a full month, goods received from the 16th on pay half a month, and minimum charges per lot or per account may apply. If your inbound loads tend to land early in the month, that split-month rule will show up on the invoice.

Contract pricing has to cover the cost of running an operation that exists for one customer. You’ll usually see one of these four structures:

Open book gives you visibility into costs but puts little pressure on the provider to reduce them, so it usually comes with productivity targets or a gainshare attached. Fixed plus variable is the common way for a provider to recover capital it spends on your behalf, such as racking, automation or WMS integration.

Term, exit and dedicated space

Public warehousing is built to be easy to walk into and out of. Under the IWLA terms either party can cancel on 30 days’ written notice. You still settle your bill before the goods leave. UCC § 7-209 gives the warehouse a lien on stored goods for storage and related charges, and the lien can reach charges on other goods too if the receipt says so.

Contract agreements run for years because the provider has start-up costs to recover: hiring and training, equipment, systems integration, and sometimes a building lease written to match your term. Look for clauses on volume commitments, early termination fees, buy-back of dedicated assets you no longer need, rate reviews and help with the transition when you leave. Read the exit clauses as closely as the rate sheet, since they set the real price of leaving.

Shared space is elastic. If inventory doubles before a season and halves afterward, the storage bill follows, and shared labor works the same way. What you give up is control. In a regional peak your trucks compete with every other client for dock doors and pickers, and any process change has to fit the operator’s standard way of working.

Dedicated space and labor let you decide layout, slotting, staffing levels and work methods. People who handle only your products get to know them, which tends to help accuracy on complicated orders. You also pay for that capacity on quiet days.

Bring finance in early on one point. A contract that gives you a specific, dedicated area in the provider’s building can contain a lease for accounting purposes, and the Equipment Leasing and Finance Association’s piece on embedded leases uses warehouse storage in dedicated space as an example. Have the draft reviewed before signing, not after.

Running the numbers

There’s no universal volume where contract warehousing becomes the better deal. Local labor and real estate costs, your order profile and the amount the provider has to invest all move the line. A more dependable approach is to price both models against the same forecast:

1. Build monthly volume scenarios for at least a low, base and peak case, covering pallets or units in storage, receipts, orders, lines and units shipped.
2. Run each scenario through the public rate card, accessorials and minimums included.
3. Run the same scenarios through the contract quote, fixed charge plus variable rates.
4. Compare totals over a full year, not a single month.

Contract usually wins when base volume is high and steady enough to spread the fixed cost thin, and when the work is complicated enough that a dedicated team avoids errors. Public usually wins when volume is low, uncertain or very seasonal, because you aren’t paying all year for capacity you need for a few months. The softer factors point the same way. A short horizon, a market test, standard receiving and shipping, a need for space within weeks or a high value on being able to leave all lean public. A multi-year horizon, custom kitting or compliance labeling, a wish for input on staffing and layout, equipment or automation built for you, or a preference for open-book pricing lean contract. If your answers split down the middle, a hybrid is probably the fit.

Liability

In the US the default duty comes from UCC § 7-204. The warehouse is liable for loss or damage caused by failing to use the care “a reasonably careful person would exercise under similar circumstances,” and not for damage that such care couldn’t have prevented. The same section lets the warehouse cap its liability through a term in the warehouse receipt or storage agreement. The cap doesn’t apply if the warehouse converts the goods to its own use, and the depositor can ask for a higher limit, at a higher rate, when signing or within a reasonable time after getting the receipt. Each state adopts Article 7 on its own, so check the version in the governing state. Outside the US, different law applies entirely.

The IWLA terms build on that baseline. Among other things, they require written claims within 60 days and any lawsuit within nine months, exclude consequential damages such as lost sales, and say the warehouse isn’t responsible for customer chargebacks. Public warehouse customers mostly accept terms like these as written. Contract customers are more likely to negotiate liability caps tied to product value, shrink allowances, insurance requirements, pass-through of chargebacks for errors the provider causes, and service levels backed by credits or incentives (see warehouse KPIs). None of this is legal advice.

Mixing the two

Many shippers run both. A common setup is a dedicated operation sized for normal volume, with public space nearby taking the seasonal peak. Another is to enter a new region through public warehousing and move to a contract once demand has proven itself.

Multi-client 3PL sits in between. One provider runs a facility for several clients, often under contract agreements, with a zone for each client and a shared labor pool and WMS. You get negotiated service levels without paying for a whole building, but at peak you are still sharing docks and staff. Ask how labor gets allocated when several clients peak at the same time, whether your inventory is physically segregated, and how system changes made for other clients are tested before they reach you. The facility checklist has more site questions, the directory lists providers by market and the glossary covers the terms you’ll run into in quotes.

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