Best 3PLs in Southern California

Southern California is a natural base for ecommerce and retail fulfillment, with the Ports of Los Angeles and Long Beach feeding warehouses from the San Fernando Valley to the Inland Empire and San Diego County. Here are the best 3PLs in Southern California.

1. River Plate

Founded: 1992

Location: Simi Valley, California

River Plate Inc. has been moving goods around Los Angeles since 1992, when it started as a family-run trucking and courier business. More than three decades later, it operates as a full omnichannel 3PL from a 138,000 sq ft facility in Simi Valley, on the western edge of the San Fernando Valley.

The company works best for brands shipping roughly 350 to 7,000 orders a month across more than one channel. DTC orders, Amazon FBA and FBM, wholesale and retail shipments all run through the same building, with kitting, subscription boxes and cross-docking handled in-house. River Plate has long specialized in beauty and can store and ship hazmat beauty products that need specialized handling.

Each client is assigned a named Client Success Manager, which matters most during peak season when a problem needs an answer the same day. Behind the scenes, the team revisits carrier contracts every quarter and uses automated cartonization to choose the smallest box that fits, two habits that keep parcel costs from creeping up.

Services

Direct-to-consumer order fulfillment, including pick and pack
B2B shipments to retailers and wholesalers, with EDI support
Amazon seller support covering FBA prep, FBA and FBM
Recurring subscription box programs
Returns intake and processing
Kitting, assembly, labeling and quality inspections
Cross-dock transfers
FTL and LTL freight plus international trade services
Climate-controlled and ambient storage
Lot tracking, oversized items and hazmat goods

Facilities: One 138,000 sq ft building in Simi Valley, CA, serving the greater Los Angeles market.

What do people say

River Plate’s Google reviews read like notes from long-term partners. Clients highlight clear communication, dependable shipping, and a team that takes ownership when something needs fixing. One brand that has worked with River Plate for six years says it came over after poor experiences with other fulfillment centers and has found that the company keeps its promises, and others mention friendly, hard-working staff. We found no negative feedback, though River Plate has yet to collect reviews on Fulfill.com, where most of its competitors are rated.

Pros

Family-run Los Angeles-area operator since 1992
Climate control and hazmat handling under one 138,000 sq ft roof
A named Client Success Manager on every account
Takes on brands from 350 orders a month and scales to 7,000
Loyal, multi-year clients and a clean review record

Cons

Single location, so national brands may need an East Coast or Midwest partner as well
Each brand is limited to 700 active SKUs

2. Komar Distribution Services

Founded: 1998

Location: Ellabell (Savannah), Georgia; Southern California hubs in Perris and Eastvale

For brands landing containers at the Ports of Los Angeles and Long Beach, Komar Distribution Services offers the largest Southern California footprint on this list. Its Perris center alone covers 855,000 sq ft, and a 380,000 sq ft building in Eastvale pushes its Inland Empire space past 1.2 million sq ft.

KDS grew out of Komar Brands, a company with more than a century in product and retail distribution, and began taking on outside clients in 1998. Its wider network of roughly 2.9 million sq ft also includes sites around Savannah, Georgia, and in Oklahoma. The company says it owns most of those buildings, and nearly all of the space carries Foreign Trade Zone status, which lets importers hold goods without paying duties until they ship.

Operations lean toward omnichannel brands with heavy retail programs. KDS manages garments on hanger, cross-docking, retailer routing guides and a customer service call center for its clients, and it cites 99.93% retail compliance alongside 99.98% on-time DTC shipping.

Services

Online order fulfillment for DTC brands
Store and wholesale shipments that follow retailer routing guides
Amazon FBA prep and FBM orders
Returns handling
Kits, retail displays and relabeling
Apparel services, including garments on hanger, tagging and laundry
Bagging, sealing, ticketing and quality audits
In-house customer service call center
Port drayage, import handling, cross-docking and FTL/LTL trucking
Climate- and humidity-controlled space with lot tracking (FDA registered, hazmat capable, C-TPAT, bonded)

Facilities: Two Inland Empire buildings, Perris (855,000 sq ft) and Eastvale (380,000 sq ft), backed by four Savannah-area sites in Georgia (Ellabell 760,000; Pooler 153,000 and 285,000; Port Wentworth 235,000) and one in McAlester, OK (300,000). Roughly 2.97 million sq ft in all.

What do people say

Clients describe KDS as a professional, detail-minded operation. Across six Fulfill.com reviews averaging 4.9, brands including Strafe Outerwear, Laural Home and Durst Image Technology point to quick responses, reliable accuracy and practical help with retailer requirements, and one reviewer ranks it first among the several 3PLs it has tried. The complaints are small. Two brands gave cost four out of five, and one said its instructions to send PO box and military addresses through USPS weren’t always followed. We didn’t find reviews on other platforms.

Pros

Largest Southern California footprint on this list, at more than 1.2M sq ft
Owned, FTZ-designated space that lets importers defer duties
Retail compliance and apparel handling built into daily operations
Bonded and C-TPAT certified, with its own port drayage
Top pick on Fulfill.com’s West Coast ranking

Cons

Entry point of 1,000 monthly orders and 100 pallets
Not built for items heavier than 50 lb
Public square-footage figures vary between sources

3. AP Express Logistics

Founded: 1992

Location: Irwindale, California

AP Express Logistics runs roughly 1 million sq ft of warehouse space in Southern California, split between its Irwindale headquarters in the San Gabriel Valley and a second large facility in Corona, in the Inland Empire. A third site in Las Vegas brings the company’s total to about 2.1 million sq ft.

The company has operated in the Los Angeles area since 1992 and is built for brands moving serious volume through retail and wholesale as well as ecommerce. It handles retailer routing and labeling requirements, display builds and returns, and runs its own fleet of 74 trucks for regional transportation and last-mile delivery to stores across Southern California and Nevada.

Apparel is a core vertical. AP Express connects to apparel ERP AIMS360 through standard warehouse EDI, and one women’s fashion retailer on Clutch routes about 90% of its apparel processing for 130 stores through the company. For importers unloading at the Ports of Los Angeles and Long Beach, that mix of warehousing, compliance and trucking keeps freight with one provider from the port to the shelf.

Services

DTC ecommerce fulfillment
Retail and wholesale distribution with routing-guide and labeling compliance
Amazon fulfillment
Returns and reverse logistics
Display builds and other value-added services
EDI and custom reporting, supported by an in-house development team
Transportation and last-mile store delivery with a 74-truck owned fleet
Import logistics for port freight
Temperature-controlled, refrigerated and ambient storage, lot tracking
Food and beverage, cold chain, hazmat, CBD, wine and spirits, big and bulky programs

Facilities: 3 warehouses, about 2.1 million sq ft per the company: Irwindale, CA (HQ); Corona, CA; Las Vegas, NV. Fulfill.com lists them at 550,000, 450,000 and 800,000 sq ft, while other listings give larger figures.

What do people say

Most feedback comes from long-term retail and wholesale clients and is positive. AP Express holds a 4.3 rating from eight Clutch reviews, where brands such as Altar’d State, MISSION and KOUBOO praise strong service-level performance, quick turnaround on display builds and container receiving, and fewer retailer chargebacks. Recurring criticisms are slow administration and accounting, inconsistent email updates on quality issues, and accuracy that isn’t always perfect. One small ecommerce brand (2026, 1 star) reported an expensive first shipment of bulky items, new minimum fees near the end of its first year, and a prepayment request before its inventory was released. One 5-star review comes from Fulfill.com’s CEO, a referral partner rather than a fulfillment client.

Pros

1 million sq ft across Irwindale and Corona, close to the LA and Long Beach ports
Owned 74-truck fleet for regional delivery and store replenishment
Deep retail compliance and apparel experience, including EDI and display builds
More than 30 years in operation, with clients dating back to 2015 and earlier
Broad specialty coverage, from cold chain to wine and spirits

Cons

Geared toward larger retail and wholesale programs; one small DTC brand reported a poor experience
Reviewers mention slow admin and billing processes
No East Coast or Midwest sites, and Southern California costs run higher

4. Selery Fulfillment

Founded: 2014 (Fulfill.com lists 2016)

Location: Carrollton, Texas; Southern California hub in Ontario

Selery Fulfillment arrived in Southern California in 2025 by buying the warehouse operations of Fan of a Fan, a creator-focused agency, and folding them into a new 80,000 sq ft center in Ontario. That Inland Empire building now anchors the West Coast end of a six-warehouse network run from Carrollton, Texas.

The company started in the Dallas area under CEO Justin White and drew early backing from Mark Cuban, who invested in its seed round. Today it targets mid-size and larger ecommerce brands, usually from around 1,000 orders a month, with further sites in Salt Lake City, Illinois, North Carolina and Florida for brands that need coverage well beyond California.

Selery’s account managers spend their days on the warehouse floor, close to the inventory they look after. Moment, a brand that ships its West Coast orders through Selery, points to that hands-on support around kitting and product launches. Selery also promotes a 90-day guarantee that covers transition costs for unhappy clients, and it offers laser engraving and handwritten notes for brands that want a personal touch in the box.

Services

Ecommerce order fulfillment, including subscription boxes
Bulk and wholesale orders
Amazon FBA and FBM
Kits, retail displays and relabeling
Personalization with laser engraving and handwritten notes
Apparel tagging, bagging, sealing and ticketing
Inspections and quality audits
FTL and LTL freight within the US
Temperature-controlled storage with lot tracking (FDA registered)
Programs for food and drink, supplements, medical devices, automotive parts and oversized goods

Facilities: Six sites totaling about 795,000 sq ft. In the West: Ontario, CA (80,000) and Salt Lake City, UT (80,000). Elsewhere: Carrollton, TX (500,000), Algonquin, IL (60,000), Hickory, NC (50,000) and Orlando, FL (25,000).

What do people say

Feedback is limited but consistently warm. In five Fulfill.com reviews, brands credit Selery with reliability, flexibility and early warnings when something goes wrong, and several value working with an account manager who handles their product firsthand. A jewelry brand that moved over from ShipBob calls the switch a welcome change, while noting a few mistakes during a busy fourth quarter that didn’t hurt overall accuracy. No reviews turned up on other sites.

Pros

Inland Empire hub in Ontario, with a second western site in Salt Lake City
Six warehouses for brands that also sell nationwide
Account managers who work alongside the inventory
Advertised 90-day guarantee on transition costs
Personalization options such as laser engraving

Cons

Ontario only opened in 2025, and the bulk of Selery’s space is in Texas
Requires about 1,000 orders a month
Only five public reviews, all on Fulfill.com

5. ShipLab

Founded: 2017

Location: Vista, California

ShipLab is a North San Diego County 3PL that grew from a garage operation into two warehouses in Vista and Carlsbad with roughly 261,000 sq ft between them. CEO Jake Brenner and two fellow ecommerce founders launched it in 2017 after finding that the fulfillment partners they tried didn’t understand what running a brand involves.

That founder mindset shapes the service. ShipLab describes its approach as “3PL+”, helping with operations planning on top of storing and shipping, and it ships the same day on orders that arrive before noon. Day to day, it handles ecommerce pick and pack, Amazon orders, wholesale, LTL freight and custom projects.

Regulated products are a particular strength. ShipLab holds FDA registration and a liquor license, keeps temperature- and humidity-controlled space, and works with wine and spirits, CBD and supplement brands. Brands it has worked with include GoPro, Boo and Kindhumans, and it ships wholesale orders to retailers such as Nordstrom and Zappos.

Services

Ecommerce pick, pack and ship
Amazon FBA and FBM
Wholesale and retail orders with EDI
Returns
Kitting, display assembly and relabeling
Apparel tagging, bagging, sealing and ticketing
Quality checks and shipping insurance
LTL/FTL storage and freight, plus import coordination
Temperature- and humidity-controlled storage with lot tracking
Programs for wine and spirits, food and beverage, CBD, supplements, auto parts and bulky goods

Facilities: Carlsbad (175,000 sq ft) and Vista (86,000 sq ft), both in North San Diego County, for about 261,000 sq ft combined.

What do people say

Every ShipLab review on Fulfill.com is enthusiastic. Clients like Slate Swim, Tail Chasers and GoodOnya talk about a team that answers quickly, a tidy warehouse, straightforward pricing and the relief of no longer worrying about fulfillment, and a bead brand calls the service quick and affordable for a small business. The softest marks are a four-out-of-five score for cost and a comment about the adjustment period after outsourcing for the first time. Seven of the eight reviews share a posting date, and we found nothing on independent review sites.

Pros

Two North San Diego County warehouses with about 261,000 sq ft
Licensed for alcohol and FDA-registered
Orders in before noon ship the same day
Accepts brands from 200 orders a month and items up to 100 lb
Run by former ecommerce founders who understand the brand side

Cons

Everything sits in one county, so national brands need another node
Reviews come from one platform and mostly one day
Size figures differ between sources

6. Smart Warehousing

Founded: 2001

Location: Kansas City metro; Southern California hub in Los Angeles

Smart Warehousing brings national scale to Southern California through a 669,000 sq ft Los Angeles facility about 56 miles from the Port of Long Beach. The company’s own West Coast page describes that site as bulk and pallet storage, with western ecommerce and retail order fulfillment handled from its Reno facility, so brands should confirm which building their orders would ship from.

Founded in 2001 and based in the Kansas City area, Smart serves CPG, ecommerce, retail and manufacturing brands across DTC, B2B and retail channels. Its network spans more than 30 warehouses, with other western sites in Seattle, Reno and Sparks, and its Smart Replenishment service positions inventory closer to customers across that network.

Technology is a big part of the pitch. Its proprietary warehouse system, SWIMS, and the Smart Visibility dashboard give clients real-time inventory and order data. There are no stated minimums for storage, orders or SKUs, items up to 150 lb are accepted, and the network covers ambient, refrigerated and frozen storage.

Services

DTC ecommerce, B2B and retail fulfillment from one inventory pool
Amazon FBA, FBM and Seller Fulfilled Prime
Returns management with 24-hour dock-to-stock
Kitting, bundling, retail display assembly, custom packing slips and inserts
Product auditing and QA
Smart Replenishment inventory placement across the network
Non-asset transportation (LTL, FTL, parcel and port drayage)
EDI, API and ERP integrations, including NetSuite, SAP, Oracle and Microsoft Dynamics
Ambient, temperature-controlled, refrigerated and frozen storage, lot tracking
Food and beverage, cold chain, automotive, big and bulky programs (AIB, FDA registered, hazmat, USDA Organic)

Facilities: Fulfill.com lists 14 warehouses totaling about 10.8 million sq ft, including Los Angeles, CA (669,451); Seattle, WA (329,289); Sparks, NV (254,460); and Reno, NV (197,140). The company says its network covers more than 30 warehouses.

What do people say

Client reviews are scarce. Its single Fulfill.com review (XL Flooring, Oct 2026) praises on-time, accurate orders and the visibility SWIMS provides, and its website quotes Joe’s Kansas City BBQ, Northwest Rubber and CF Moto on responsiveness and automation. G2 shows no reviews. Employee feedback is weaker: Indeed rates Smart Warehousing 2.6 from 76 reviews, with ratings falling in 2025 and 2026 and comments about overwork and turnover, which is worth raising when you ask about staffing.

Pros

669,000 sq ft Los Angeles facility within reach of the Port of Long Beach
National network of 30+ warehouses for 2-day coverage
Full cold chain, including refrigerated and frozen storage
No stated minimums for storage, orders or SKUs
Proprietary SWIMS system with real-time visibility

Cons

The LA site is described as bulk and pallet storage; western ecommerce fulfillment runs from Reno
Very few independent client reviews
Low and declining employee ratings on Indeed

7. ShipCalm

Founded: 2017

Location: Los Angeles, California (fulfillment center); corporate address in San Francisco

ShipCalm is a tech-led 3PL serving digitally native brands from a 155,000 sq ft fulfillment center in Los Angeles and a 175,000 sq ft site in Plainfield, Indiana. The LA facility came out of a 2024 expansion, when ShipCalm acquired River Source Logistics and moved its San Diego operations into a Los Angeles building with three times the capacity.

The two-coast setup gives Southern California brands a second node in the Midwest without managing two providers. ShipCalm handles DTC, Amazon, retail and wholesale orders, and adds services such as a customer service call center, subscription and crowdfunding fulfillment, and an AI operations platform it calls Marvin.

It is also set up for products that need extra care. ShipCalm is FDA registered, certified for hazmat and dangerous goods, and handles pharmaceuticals, CBD and supplements, with a low entry point of 200 orders a month and up to 25,000 SKUs per brand.

Services

DTC ecommerce fulfillment
Retail and wholesale fulfillment
Amazon FBA, FBM, FBA prep and Seller Fulfilled Prime
Returns and reverse logistics
Subscription box and crowdfunding fulfillment
Kitting, retail display assembly, labeling, handwritten notes
Apparel label tagging, bagging and sealing, ticketing
Customer service call center
Domestic FTL/LTL, end-to-end import and port drayage
Ambient and humidity-controlled storage, lot tracking (FDA registered, hazmat, USDA Organic, Seller Fulfilled Prime)

Facilities: 2 warehouses, about 330,000 sq ft per Fulfill.com: Los Angeles, CA (155,000) and Plainfield, IN (175,000).

What do people say

Independent reviews are thin. ShipCalm has no Fulfill.com reviews, and its two Gartner Peer Insights entries are identical and include placeholder text, though they mention occasional shipping delays and variable pricing. Its own testimonials page carries more weight, with named clients such as Dr Squatch, OOLY, Old Guard Pet Company and Bioharvest Sciences praising fast go-lives, responsive support and better accuracy; one brand on its third 3PL in a year credits ShipCalm’s clear pricing and shipping discounts. Those quotes are company-selected, so ask for references.

Pros

155,000 sq ft Los Angeles fulfillment center plus an Indiana site for Midwest and East Coast reach
Hazmat and dangerous goods certified, with pharmaceutical and supplement experience
In-house call center and subscription and crowdfunding fulfillment
Low 200-order monthly minimum and capacity for large catalogs
Named DTC clients such as Dr Squatch and OOLY

Cons

No independent client reviews of note
Public information conflicts on headquarters and facility size
Recently relocated from San Diego, so the LA operation has a short track record

8. ShipBots

Founded: 2010

Location: Gardena, California

ShipBots is a family-owned ecommerce fulfillment company based in Gardena, in the South Bay area of Los Angeles, a short drive from the Ports of Los Angeles and Long Beach. It runs two Gardena warehouses of 25,000 and 52,000 sq ft and focuses on growing DTC brands that want a hands-on partner rather than a large national operation.

Owners Payam and Omid stay closely involved, and clients regularly mention dealing with them directly. ShipBots runs on the ShipHero WMS, offers same-day shipping for orders placed before cutoff, and passes on discounted carrier rates. It handles a wide mix of products, from apparel and beverages to oversized items up to 149 lb and CBD shipped internationally.

Pricing is more transparent than most. A third-party review lists storage from $5 per bin and $36 per pallet a month, with the first four picks per order included, standard receiving and basic packaging at no extra cost, and no long-term contract. Confirm current rates directly, since that review isn’t dated.

Services

DTC ecommerce fulfillment with same-day shipping before cutoff
Retail, wholesale and Amazon FBA prep
Subscription box and merchandise fulfillment
Returns management
Kitting, bundling, retail display assembly, labeling and relabeling
Apparel label tagging, bagging and sealing
Freight coordination, address validation and claims management
Temperature-controlled and ambient storage, lot tracking
Food and beverage, nutraceutical, CBD, automotive, big and bulky programs (CGMP, FDA registered, hazmat)

Facilities: 2 mapped warehouses in Gardena, CA (25,000 and 52,000 sq ft). Fulfill.com counts 3 facilities and 102,000 sq ft in total, and a third-party review also lists sites in Kansas City, MO, and Rocky Mount, NC.

What do people say

ShipBots has the strongest independent review record among the new entries. It scores 5.0 from seven Clutch reviews and 4.7 from 34 Trustpilot reviews, where clients praise fast, accurate shipping, low rates on large packages, flexible handling of unusual SKUs and direct access to the owners; one brand says it was the fastest and most accurate of three fulfillment centers it has used. Criticisms include early inventory count errors, occasional TikTok Shop tracking sync issues and a wish for more proactive inventory updates during peak. Two 1-star Trustpilot reviews (2023 and 2025) allege billing disputes and inventory being held, and many of the 5-star Trustpilot reviews describe sales calls rather than ongoing service.

Pros

Gardena warehouses close to the LA and Long Beach ports
Strong reviews across Clutch and Trustpilot
Owner-led, hands-on service with dedicated account managers
Transparent starting rates and no long-term contract
Handles unusual and oversized SKUs up to 149 lb

Cons

Small footprint compared with larger Southern California operators
Two serious billing and inventory complaints on Trustpilot
Fulfill.com lists a 1,000-order monthly minimum

9. Ship321

Founded: 2020

Location: Tijuana, Baja California, with a US site in San Diego, California

Ship321 is the only 3PL on this list with a fulfillment network that straddles the US-Mexico border. Brands keep inventory in three Tijuana warehouses totaling 100,000 sq ft and a 50,000 sq ft facility in San Diego, with a fifth site in Shenzhen for products made in China.

The model is built around trade rules. Ship321’s Tijuana sites hold IMMEX certification, so inventory can sit in Mexico free of Mexican duties and VAT while US duties wait until goods cross the border. Orders are packed in Tijuana, trucked into San Diego every day, and tendered to US carriers the same day when they qualify.

Brands also use the Tijuana sites for hands-on work such as product assembly, embroidery, laser engraving, kitting and quality checks. Loftie, for example, first signed on for Section 321 shipping and stayed for the service. Contracts stay flexible too, with no volume minimums and no mandatory long-term commitment.

Services

Direct-to-consumer order fulfillment
Retail and wholesale shipments that meet retailer compliance rules
Amazon FBA, FBM and Seller Fulfilled Prime
Returns
Cross-border customs clearance and in-bond imports through Mexico
Kitting, display builds and relabeling
Customization through embroidery, laser engraving and handwritten notes
Bagging, sealing, ticketing and quality audits
FTL/LTL trucking, port drayage and full import management
Temperature- and humidity-controlled storage with lot tracking (FDA registered, hazmat, C-TPAT, bonded, ISO 13485, USDA Organic)

Facilities: One US warehouse in San Diego, CA (50,000 sq ft), three across the border in Tijuana, B.C. (20,000, 25,000 and 55,000 sq ft) and one in Shenzhen, China (30,000 sq ft). 180,000 sq ft in total.

What do people say

For a company founded in 2020, Ship321 has built a sizable review base, with 20 Fulfill.com reviews and a perfect 5.0. Customers including Sunday Golf, DIGGS Pet, Cloud Water Filters and Loftie mention tight inventory control, next-day shipping, invoices without surprises and practical help with tariffs and USMCA certification. Several note that the CEO picks up the phone himself, and a client since 2023 says its logistics costs went down. We found no complaints, though eight of the reviews arrived in the first half of October 2026 and none appear outside Fulfill.com.

Pros

US warehouse in San Diego, fed daily from Tijuana
IMMEX-certified sites that defer duties and VAT
Assembly and customization handled close to the US border
No volume minimums or required long-term contracts
Twenty five-star reviews on Fulfill.com

Cons

Only one US facility, and it’s the smallest part of the network
Brands that sell only domestically may not need the extra customs steps
Reviews are limited to one platform and cluster in recent weeks

How to choose the best 3PL for your business

Southern California has more fulfillment options than almost any region in the country, which makes narrowing the shortlist harder. The providers above differ in size, specialty and the kind of client they want. Use the questions below to compare them on what will actually affect your margins and your customers.

How many orders do you ship each month?

Start with your monthly order count, since it filters the list faster than anything else. 3PLs plan staffing and pricing around a certain level of throughput, and many publish a minimum. On Fulfill.com, ShipLab lists a 200-order monthly minimum and Selery asks for 1,000. River Plate works with brands shipping between 350 and 7,000 orders a month.

A provider whose minimum sits just under your volume may treat you as a minor account. One built for much smaller brands may struggle when you double. Estimate where you’ll land over the next year, holiday peaks included, and pick a partner that fits both numbers.

What size and weight are your products?

Dimensions and weight touch nearly every line on a 3PL invoice. Larger items take up more rack space and need sturdier packaging. They also cost more to ship, because carriers bill by dimensional weight.

Water filters show how wide the range can be inside a single category. Replacement cartridges for pitchers and fridges are light enough to live in small bins. Whole-house water filters and reverse osmosis units weigh far more and usually sit on pallets. A warehouse that handles the first comfortably might not want the second at all.

Check each provider’s maximum parcel weight and ask whether it offers big and bulky handling. Ask how it chooses carton sizes too.

How is the 3PL priced?

Most 3PLs bill separately for receiving, storage, pick and pack, packaging materials and postage. Returns, kitting and custom projects usually carry their own rates. A low pick fee can hide expensive storage, and the reverse happens just as often.

The cleanest way to compare quotes is to send every provider the same data, such as a recent month of orders along with your SKU count. Ask each one to price that exact month. Then look at the minimum monthly bill and how storage is measured, whether by pallet, shelf, or cubic foot. Ask whether per-order rates drop once you pass certain volume thresholds, since your costs should improve as you grow.

Where are the warehouses relative to your customers?

Parcels shipped from Los Angeles or the Inland Empire cross fewer carrier zones on the way to West Coast buyers, so they arrive sooner and cost less. That advantage shrinks for customers in New York or Florida. If your sales are spread nationwide, look for a provider with sites in other regions, or plan to add a second warehouse once volume justifies it.

Importers have another distance to measure. A 3PL near the ports of Los Angeles and Long Beach keeps drayage costs down and gets containers onto shelves faster. Brands that manufacture in Mexico or ship heavily to Canada and Mexico may get more from a cross-border setup like Ship321’s operation in San Diego and Tijuana.

What products are you selling?

Your product category decides which certifications and storage conditions you need. Supplements and packaged food generally call for FDA registration and lot tracking. Beauty brands should check whether any SKUs count as hazardous materials, since some fragrances and aerosol products do. Anything that melts or spoils needs climate control, a real concern in inland warehouses during summer heat waves.

Wine is a useful test. Shipping a wine club’s monthly boxes takes much of the same care as relocating a fine wine collection, with steady temperatures and secure packing from the first pick to the final doorstep. Alcohol also comes with licensing and adult-signature rules, so confirm the 3PL already ships it legally before you move any inventory.

Which sales channels does the 3PL support?

Ask each provider to walk you through how an order travels from your storefront to its warehouse floor. Shopify, WooCommerce, Amazon, Walmart and TikTok Shop are standard integrations for most ecommerce 3PLs, though the quality of those connections varies. Some sync inventory almost instantly, while others update in batches that can lead to overselling.

Retail is its own challenge. If you ship to department stores or big-box chains, the 3PL needs EDI capability and a record of meeting retailer routing guides, because a missed label or late delivery appointment can trigger a chargeback. Amazon sellers should ask about FBA prep and Seller Fulfilled Prime experience as well.

How does the 3PL communicate and handle problems?

No warehouse gets every order right. What you need to know is how quickly a provider catches a mistake and whether it tells you before your customers do. Ask who your day-to-day contact will be and how fast they usually reply. A named account manager tends to fix issues faster than a ticket queue.

Reviews help if you read them closely. A cluster posted in the same week may be a solicited batch, while a handful of detailed reviews spread over several years says more about consistency. Ask for client references with products like yours and question them specifically about peak season.

What happens if you need to leave?

Plan your exit before you sign. Contract length and offboarding fees vary widely between providers, and both are far easier to negotiate at the start than at the end.

Ask how the 3PL handles the final inventory count and how long it takes to release your stock to a new warehouse. Moving pallets across Los Angeles is simpler than sending them across the country, though a slow handover can still leave you short on stock for weeks. If a provider wants a long commitment, push for written service levels on order accuracy and ship times, along with a clear way out if those levels are missed.