What Is a 3PL Warehouse? Services, Benefits, and How It Works

A 3PL warehouse is a facility run by a third-party logistics provider that stores, picks, packs, and ships your inventory. The brand owns the goods. The 3PL owns the building, the labor, the carrier contracts, and the software that connects everything to your store. Most ecommerce brands under 50,000 orders a month find a 3PL warehouse delivers a lower total cost than running their own facility.

What is a 3PL warehouse?

A 3PL warehouse is a facility run by a third-party logistics (3PL) provider that stores, picks, packs, and ships inventory on behalf of ecommerce and B2B brands. The brand owns the inventory. The 3PL owns the warehouse, the labor, the carrier contracts, and the software that ties it all together.

For a brand, the alternative to a 3PL warehouse is to lease a building, hire warehouse staff, buy a warehouse management system, set up dock equipment, and negotiate directly with UPS, FedEx, and USPS. Most brands under 50,000 orders a month find that a 3PL warehouse delivers a lower total cost than running their own facility, especially if they need multiple regions for two-day reach.

For a deeper look at how 3PLs work as companies, see our full guide on third-party logistics.

How does a 3PL warehouse work?

A 3PL warehouse runs on five workflows that repeat every day:

Receiving: the brand sends inventory into the warehouse (often a sea or rail container, sometimes a truckload). The 3PL unloads, counts, inspects for damage, scans into the inventory system, and puts away to bin locations

Storage: inventory sits in pallet rack, shelf bins, or floor lanes depending on velocity and size. Fast-moving SKUs go to forward pick locations, slow movers go to reserve

Picking: when an order drops in from the brand ecommerce platform, a picker pulls each unit from its bin location using a handheld scanner. The system enforces the right SKU and quantity through barcode scans

Packing: the picked items go to a pack station where staff select the right box size, add dunnage, apply the shipping label, and stage for outbound

Shipping: the carrier (UPS, FedEx, USPS, or regional) picks up the package the same day if it cleared the cutoff. Tracking pushes back to the brand and the customer

The integration layer between the brand store and the 3PL warehouse is what makes the magic work. When a customer places an order on the Shopify or Amazon storefront, the order flows to the 3PL within seconds, gets picked and packed within hours, and ships the same business day if it came in before the cutoff.

For more on the receiving step, see our guide on warehouse receiving best practices.

What services does a 3PL warehouse provide?

A modern 3PL warehouse offers more than just storage and shipping. The standard service set:

Storage for pallets, cases, and individual SKUs in climate-controlled or ambient conditions

Receiving for inbound containers, truckloads, and parcel returns from suppliers

Pick and pack for ecommerce orders, B2B orders, and bulk wholesale orders. See our breakdown of pick and pack services

Kitting and assembly for product bundles, gift sets, and subscription boxes

Returns processing including inspection, restocking, and refund triggering

EDI integration for retail and wholesale customers (Amazon Vendor, Walmart, Target, regional grocery)

Custom packaging for branded boxes, inserts, marketing materials, and unboxing experience

FBA and FBM prep for Amazon sellers

Cross-docking for inventory that does not need long-term storage

Drayage from port to warehouse for ocean freight

Not every 3PL offers every service. Smaller 3PLs may stick to ecommerce pick and pack. Larger 3PLs add value-added services like kitting, EDI, and returns. The right service mix depends on the brand sales channels and product type.

What are the benefits of using a 3PL warehouse?

Five benefits that show up consistently for brands that move from self-fulfillment or a single regional setup to a 3PL warehouse:

Lower total fulfillment cost at most volumes. The 3PL spreads warehouse rent, labor, and software across many brands. Most brands under 50,000 orders a month find a 3PL delivers a lower total cost than running their own facility

Two-day shipping reach through multi-warehouse setups. Two warehouses on opposite coasts can put 95 percent of the U.S. population within 2-day ground delivery without paying for express

Carrier rate leverage. A 3PL ships millions of packages a year and has negotiated rates with UPS, FedEx, and USPS. A small brand cannot match those rates directly

Real-time inventory visibility. Modern 3PL warehouses run on warehouse management systems that push live inventory counts to the brand portal so you see exactly what is in stock as it changes

Scale without infrastructure debt. The 3PL absorbs Black Friday volume spikes without forcing the brand to lease 50 percent more square footage or hire seasonal labor

How is a 3PL warehouse different from a regular warehouse?

A regular warehouse is a building used for storage. The brand owns the inventory, owns or leases the building, hires the labor, and runs the operations. A 3PL warehouse is a service: the building, labor, software, and carrier contracts come bundled.

The cost structure is different too. A regular warehouse is mostly fixed cost: lease, salaries, utilities. A 3PL warehouse is mostly variable cost: storage by pallet, picking by order, shipping by package. That makes 3PL more efficient for brands with seasonal demand and harder to justify only when volume is so high and so steady that the fixed-cost setup outcompetes.

Who should use a 3PL warehouse?

A 3PL warehouse fits brands at most stages of growth, but the value is highest in two segments:

Brands doing 500 to 50,000 orders a month who want two-day reach without leasing a second warehouse and hiring a second team

Brands launching a new sales channel (a Walmart account, an Amazon FBM lane, an EDI customer) where they need infrastructure without ramping a fixed-cost build-out

Above 100,000 orders a month, the math starts to favor at least a partial in-house build. Even then, most brands keep a 3PL relationship for overflow and second-region reach.

How much does a 3PL warehouse cost?

A 3PL warehouse charges on three main lines plus shipping pass-through:

Storage: typically $15 to $30 per pallet per month, or roughly $0.50 to $1.50 per cubic foot per month

Receiving: $25 to $75 per container or per pallet for unloading and put-away

Pick and pack: $2 to $4 per order for the first item, plus $0.30 to $0.75 per additional item

Shipping: billed at the carrier rate the 3PL has negotiated (typically 20 to 40 percent below retail)

Plus extras for kitting, custom packaging, EDI label generation, and returns processing. To run your specific volumes, use our fulfillment cost calculator for a fixed monthly estimate.

What should I look for when choosing a 3PL warehouse?

The eight criteria that matter most when comparing 3PL warehouses:

Location and ports. Warehouses near major ports cut drayage cost on imported inventory. East Coast and West Coast coverage is essential for 2-day national reach

Same-day ship cutoff. Look for a 2 p.m. local cutoff. Earlier cutoffs leave you behind on next-day orders

Receiving turnaround. 24 to 48 hour put-away on inbound containers. Slow receiving turns into stockouts

Inventory accuracy. 99 percent or higher. Below 95 percent leads to backorders and oversells

Real-time portal access. Live inventory counts, order status, and container tracking visible in a self-serve portal, not by emailing an account manager

Integrations. Direct connectors to your ecommerce platform, ERP, and EDI partners

Pricing transparency. Published rate cards and a calculator beat custom-quote-only pricing for evaluation

Customer service. Named account contact, sub-2-hour response time, and someone who picks up the phone

How does 3PL Center's warehouse setup work?

We run two warehouses near the major ports: one on the West Coast in California and one on the East Coast in New Jersey. Together they put 95 percent of the U.S. population within 2-day ground reach without paying for express.

Same-day shipping on orders received by 2 p.m. local time

24 to 48 hour receiving turnaround on inbound containers

Real-time inventory visibility through our client portal

Direct port drayage and container tracking

Published pricing through our fulfillment cost calculator

Pick and pack, kitting and assembly, EDI compliance, returns processing, FBA prep

See our locations page for warehouse details by region. To talk through your specific setup, get a quote and we will run your monthly volumes through the calculator and walk through what your fulfillment cost looks like.