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One warehouse or two: how bi-coastal fulfillment shortens delivery times
By Fulfillment Rocket Team | | 3 min read
Where your inventory sits has a direct effect on how long your customers wait. A parcel shipped by ground from one corner of the country to the opposite corner spends more days in transit than one shipped to a nearby state. Bi-coastal fulfillment, meaning one warehouse on each coast, lets you ship each order from the location closer to the customer. This article explains how that works and how to decide whether one warehouse or two is right for you.
Why distance matters
Ground carriers move parcels through a network of hubs. The farther a parcel travels, the more hubs and days it usually needs. Expedited services can shorten that, but they cost more on every order. Placing inventory closer to customers shortens the trip without changing the service level you pay for.
With two warehouses, one on each coast, most customers are closer to one of them than they would be to a single central or coastal location.
How orders are routed
In a two warehouse setup, each order is assigned to a warehouse based on the delivery address and available stock. A customer in California is served from the West Coast, and a customer in New York is served from the East Coast. Customers in the middle of the country can often be served well from either.
| Customer region | Typical source warehouse |
|---|---|
| West Coast, Southwest, Mountain West | West Coast warehouse |
| Northeast, Mid Atlantic, Southeast | East Coast warehouse |
| Central states | Whichever warehouse is closer or has stock |
When one warehouse is enough
One warehouse can be the right choice for some brands. If most of your customers are concentrated in one region, a single warehouse near them may already give good delivery times. If you have a very large catalog with low sales per item, splitting stock can leave you with too little of each item in each place. And if you are just starting with a 3PL, beginning in one location and adding the second later keeps things simple.
When two warehouses make sense
Two warehouses tend to help when your customers are spread across the country and fast delivery matters to them. It also adds resilience: if weather or a carrier issue affects one region, the other warehouse keeps shipping. The trade-off is inventory planning, because you need enough stock in both places.
- Customers are spread across both coasts
- Delivery speed is a selling point for your brand
- Your best sellers move steadily enough to stock in two places
- You want a backup location during busy seasons
Planning inventory across two coasts
Start by looking at where your orders ship today. Use that split as a starting point for how much inventory to send to each warehouse, focusing on your best selling SKUs. Slower items can stay in one location. Review the split regularly and rebalance stock as patterns change, especially before peak season.
Your inbound shipments may also change. Some brands ship from their supplier to both warehouses directly, while others send everything to one location and transfer part of it.
What does not change
Adding a second warehouse should not make your operation feel more complicated from the outside. Your store still sends orders the same way, your customers still receive tracking automatically, and your packaging and inserts should be identical from both locations. Ask your 3PL to confirm that the same packing standards, carriers and return rules apply at each warehouse.
It is also worth agreeing how inventory is reported. You should be able to see stock levels for each location separately and as a total, so you know when to send more to one coast before it runs low.
Finally, think about how you describe delivery to customers. If you promise a delivery window at checkout, make sure it reflects what both warehouses can do, and update it if you change how stock is split.
How Fulfillment Rocket does it
Fulfillment Rocket has two US warehouses: West Coast in Commerce, California and East Coast in Dover, Delaware. By shipping from the closer coast, ground delivery reaches most US addresses in 1 to 3 business days. Orders received by 2 PM local warehouse time ship the same business day. You can split inventory across both coasts or start with one, and your dedicated account manager helps you plan the split. There are no long-term contracts.
