Buyers Guide
Everything You Need to Know Before Buying a Shipping Container
Whether you're purchasing your very first container or expanding an existing fleet, this comprehensive guide covers container types, sizes, grading, pricing, delivery, inspection, and everything in between — so you can buy with absolute confidence.
Understanding Container Types
Shipping containers come in several specialized types, each engineered for a distinct purpose. Understanding the differences helps you select the right unit for your specific application — whether it's long-term storage, freight shipping, cold-chain logistics, or a custom build project.
Standard Dry Storage
Most Common TypeThe most widely used shipping container, designed for general-purpose dry cargo. Features solid steel walls, a corrugated roof, double swing doors at one end, and a hardwood floor. Ideal for storage, moving, and freight transport.
High-Cube Container
Extra HeadroomIdentical to standard containers but with an additional foot of interior height (9'6" vs 8'6"). The extra vertical space makes high-cube containers the preferred choice for container homes, offices, retail spaces, and voluminous cargo.
Refrigerated (Reefer)
Temperature ControlledReefer containers are equipped with an integrated refrigeration unit that maintains precise temperature ranges from -30°C to +30°C. Essential for food storage, pharmaceutical transport, and any cargo that requires a controlled cold-chain environment.
Open-Top Container
Overhead LoadingOpen-top containers have a removable tarpaulin roof instead of a solid steel ceiling, allowing tall or oversized cargo to be loaded from above via crane. Widely used in mining, construction, and heavy industrial freight applications.
Flat Rack Container
Heavy & Oversized LoadsFlat racks have collapsible or fixed end walls with no side walls or roof, creating a platform-style container for heavy machinery, vehicles, boats, and structural steel. Designed to handle extreme weight loads with maximum loading flexibility.
Modified / Custom Build
Bespoke SolutionsStandard containers transformed into fully functional spaces — offices, homes, pop-up shops, workshops, labs, and more. Our in-house team handles insulation, electrical wiring, plumbing, custom doors and windows, paint, and interior finishing.
Container Sizes & Specifications
Shipping containers are manufactured to strict ISO standards, which means dimensions are globally consistent. Choosing the right size comes down to your storage volume, available footprint, and how the container will be used or transported.
| Container Size | Exterior Dimensions | Interior Dimensions | Door Opening | Max Payload | Volume (CBM) | Best For |
|---|---|---|---|---|---|---|
| 10ft Standard | 10' L × 8' W × 8'6" H | 9'4" × 7'8" × 7'10" | 7'8" W × 7'5" H | ~10,000 kg | ~14 m³ | Small storage, tight spaces |
| 20ft Standard | 20' L × 8' W × 8'6" H | 19'4" × 7'8" × 7'10" | 7'8" W × 7'5" H | ~28,200 kg | ~33 m³ | Residential storage, small freight |
| 40ft Standard | 40' L × 8' W × 8'6" H | 39'5" × 7'8" × 7'10" | 7'8" W × 7'5" H | ~26,780 kg | ~67 m³ | Commercial storage, large freight |
| 40ft High-Cube | 40' L × 8' W × 9'6" H | 39'5" × 7'8" × 8'10" | 7'8" W × 8'5" H | ~26,460 kg | ~76 m³ | Container homes, offices, tall cargo |
| 45ft High-Cube | 45' L × 8' W × 9'6" H | 44'5" × 7'8" × 8'10" | 7'8" W × 8'5" H | ~27,700 kg | ~86 m³ | Maximum volume freight & projects |
| 20ft Open-Top | 20' L × 8' W × 8'6" H | 19'4" × 7'8" × 7'8" | 7'8" W × 7'5" H | ~28,000 kg | ~32 m³ | Machinery, bulk minerals |
| 20ft Reefer | 20' L × 8' W × 8'6" H | 17'8" × 7'5" × 7'5" | 7'5" W × 7'2" H | ~27,400 kg | ~28 m³ | Food, pharma, cold chain |
| 40ft Flat Rack | 40' L × 8' W × 8'6" H | 39'6" × 7'5" platform | Open sides | ~40,000 kg | N/A | Vehicles, steel, heavy equipment |
Container Condition & Grading
Not all containers are the same condition. Grading gives buyers a standardized framework to understand the physical state of a unit, helping you balance quality against cost based on your intended use.
One-Trip (New)
Used only once to ship goods from the manufacturer — essentially brand new. The highest quality containers available on the secondary market.
Pros
- Like-new condition
- Minimal surface wear
- Clean interior
- Best for modifications
- Longest lifespan
Cons
- Higher purchase price
- Limited availability
- May need ordering lead time
Cargo-Worthy (CW)
Actively certified for international freight shipping. Structurally sound with moderate cosmetic wear. Passes marine surveyors inspection standards.
Pros
- Certified for shipping
- Structurally intact
- Good price/quality
- Widely available
Cons
- Visible surface rust
- Minor dents common
- Paint fading expected
- Interior may need cleaning
Wind & Water Tight (WWT)
Retired from active shipping service. Structurally sound and fully sealed against weather, but no longer certified for freight. Perfect for on-site storage.
Pros
- Most affordable option
- Weather-tight & secure
- Ideal for storage
- Immediate availability
Cons
- Not for shipping use
- Heavy cosmetic wear
- May have repaired areas
- Not ideal for homes
What to Inspect Before You Buy
Whether buying new or used, a thorough inspection protects your investment. Here are the critical areas to examine — either in-person or by requesting an inspection report and photos from the seller.
01 Exterior Structure
- Check all four walls for large dents, holes, or buckled panels
- Inspect welds and seams for cracks or separation
- Look for excessive or deep surface rust, especially along the bottom rails
- Ensure corner castings are undamaged and correctly aligned
- Verify the roof is flat with no pooling indentations or punctures
02 Doors & Locking Gear
- Open and close all doors — they should swing freely without resistance
- Check door seals (gaskets) for cracks, tears, or compression loss
- Inspect locking rods and cam levers for rust, bending, or seizure
- Test the door lock boxes and padlock hasps for proper alignment
- Light test: close doors in daylight and check for light seeping in
03 Floor & Interior
- Walk the full interior floor — soft or bouncy spots indicate rot
- Inspect floorboards for cracks, missing sections, or chemical staining
- Check floor securing rings (lashing rings) for damage
- Look for signs of moisture, mold, or pest infestation inside
- Smell the interior — chemical odors may indicate prior hazardous cargo
04 Undercarriage & Base Rails
- Inspect all four bottom side rails for rust, cracks, or structural deformation
- Check the cross-members (floor supports) for corrosion or buckling
- Ensure forklift pockets are intact and undamaged on both sides
- Verify corner posts are straight and free of major impact damage
- Look for patch welds or repairs that may indicate previous structural damage
05 CSC Certification Plate
- Locate the CSC (Container Safety Convention) plate, typically on the left door
- Verify the plate is legible and not expired
- Check the maximum gross weight, tare weight, and stacking load rating
- Confirm the container identification number matches all documentation
- For cargo-worthy units, request the current survey certificate from the seller
06 Roof & Weather Integrity
- Inspect the full roof surface for rust-through, dents, or weld failures
- Check where the roof panels meet the side rails for separation or gaps
- For open-top containers, ensure the tarpaulin and bow bars are in good condition
- After rain, check for any internal water ingress or dripping
- For reefer units, test the refrigeration unit for proper operation
Shipping Container Pricing Guide
Container prices vary based on size, condition grade, location, market demand, and current steel prices. The ranges below reflect typical market pricing. Always request a quote for exact delivery-inclusive pricing to your specific address.
20ft Used (WWT)
- Wind & water tight condition
- Ideal for on-site storage
- Cosmetic wear expected
- Structurally sound
- Available immediately
20ft One-Trip
- Like-new condition
- Best for modifications
- Minimal surface wear
- Clean, odor-free interior
- Longest expected lifespan
40ft Used (WWT)
- Double the storage capacity
- Retired cargo container
- Great for large storage
- Secure & weather-tight
- Widely available
40ft High-Cube One-Trip
- Maximum interior volume
- Extra 1ft of headroom
- Preferred for container homes
- New condition
- Ideal for custom builds
Refrigerated (Reefer)
- Integrated cooling unit
- Temperature certified
- Food & pharma grade
- Various conditions available
- Additional power costs apply
Custom Modified
- Container homes & offices
- Custom doors & windows
- Full electrical & plumbing
- Insulation & HVAC options
- Quote required
Delivery Location
Distance from our depot to your delivery site directly affects transport cost. Rural or difficult access sites may carry a surcharge.
Condition Grade
One-trip containers command a premium over cargo-worthy or WWT units. Define your use case before deciding on grade.
Market & Steel Prices
Container prices fluctuate with global steel costs, port activity, and seasonal freight demand. Lock in prices when rates are favorable.
Modifications & Extras
Added features — paint, vents, shelving, locks, windows — all contribute to the final cost. Request an itemized custom quote.
How Container Delivery Works
Delivering a shipping container is a specialized logistics process. Understanding each step helps you properly prepare your site and ensures a smooth, damage-free delivery experience from our yard to your door.
Order Confirmation & Scheduling
Once your order is placed and payment is confirmed, our logistics team contacts you within 24–48 hours to schedule a delivery window. We work around your availability and coordinate with our nearest depot to your location.
💡 Tip: Book weekday deliveries for faster turnaround and wider driver availability.Site Survey & Access Assessment
Our team will ask about your delivery site — access road width, overhead clearance (trees, cables, bridges), ground conditions, and where you want the container placed. A standard tilt-bed delivery truck requires approximately 80–100 feet of clear space.
💡 Tip: The delivery area should be level, firm, and free of obstacles. Gravel or concrete is ideal.Delivery Method Selection
Containers are delivered using tilt-bed trailers (most common), flatbed trucks with crane offloading, or in some cases, specialized side-loader trucks. The best method depends on your site access and where exactly the container needs to be placed.
💡 Tip: For difficult access sites, a crane offload gives you the most precise container placement.Preparing Your Site
Before delivery day, clear the drop zone of all obstacles. If placing on soil, consider laying railway sleepers or concrete blocks at the four corners to keep the container level and prevent ground contact corrosion. Mark your preferred orientation clearly.
💡 Tip: A 20ft container weighs ~2,200 kg empty. Ensure your ground can safely bear the load.Day of Delivery
Our driver will call 30–60 minutes before arrival. The driver will reverse the tilt-bed trailer into position, hydraulically tilt the bed, and slide the container off onto your prepared surface. The entire process typically takes 15–30 minutes on-site.
💡 Tip: Be present at delivery to direct placement and inspect the container before signing off.Final Inspection & Sign-Off
Walk around and inspect the container before the driver leaves. Check for any transit damage, verify the door seals and locking gear function correctly, and confirm the unit matches your order. Note any concerns on the delivery receipt before signing.
💡 Tip: Take photos of the container immediately after delivery for your own records.Common Uses for Shipping Containers
Shipping containers are incredibly versatile structures. Beyond their traditional freight role, they are being creatively repurposed across virtually every industry and lifestyle application.
Residential Storage
Secure on-site storage for household goods, seasonal items, tools, and vehicles during renovation or relocation.
Container Homes
Sustainable, cost-effective housing built from high-cube containers. Fully customizable with insulation, plumbing, and electrical.
Pop-Up Retail
Trendy, mobile retail shops and food stalls built from modified containers for events, markets, and permanent locations.
Site Offices
Fully fitted mobile offices for construction sites, mines, and remote projects — complete with power, climate control, and internet.
Agricultural Use
On-farm storage for equipment, fertilizers, grain, and tools. Weather-tight and lockable — ideal for remote rural properties.
Freight & Shipping
International and domestic intermodal freight transport by sea, rail, and road using ISO-certified dry cargo and reefer units.
Workshop & Studio
Artists, craftspeople, and tradespeople convert containers into insulated workshops, music studios, and creative spaces.
Disaster Relief
Emergency housing, medical stations, and supply depots rapidly deployable in disaster zones using standard shipping containers.
Frequently Asked Questions
Still have questions? Here are the most common queries from first-time and returning container buyers, answered by our team of container specialists.
Do I need a permit to place a shipping container on my property?
Permit requirements vary by city, county, and state. For temporary storage (under 6 months), most jurisdictions require no permit. For permanent placement or containers used as structures (offices or homes), a building or zoning permit is typically required. Always check with your local planning authority before delivery.
How long does a shipping container last?
A well-maintained shipping container can last 25–30+ years. One-trip containers can realistically last 30–40 years with basic upkeep. Factors that affect lifespan include climate, coastal exposure (salt air accelerates rust), maintenance frequency, and whether the unit is kept off direct ground contact.
Can I stack shipping containers on top of each other?
Yes. ISO shipping containers are engineered to stack up to 9 units high when loaded at sea. For on-site stacking, ensure the ground is reinforced and containers are stacked corner-to-corner (corner castings bear the load, not the side walls). Consult a structural engineer for multi-story container building projects.
What is the difference between a 20ft and 40ft container?
The primary differences are length and volume. A 20ft container offers ~33 cubic meters of storage while a 40ft provides ~67 cubic meters — roughly double. A 40ft container costs more but has a lower cost-per-cubic-meter. For most residential storage needs, a 20ft is sufficient. A 40ft is better for commercial or large project applications.
Can shipping containers be insulated and climate controlled?
Absolutely. Containers can be insulated using spray foam, rigid foam board, or wool insulation batts. For climate control, mini-split HVAC systems are the most popular solution. Proper insulation is essential for container homes, offices, and any temperature-sensitive storage to prevent condensation (known as "container rain").
Is it better to buy or rent a shipping container?
Buying makes more financial sense for long-term use (12+ months) since monthly rental fees typically exceed ownership costs within a year. Renting is better for short-term needs, as you avoid delivery/pickup costs and ongoing maintenance. If you need a container for more than one year, purchasing almost always provides the better return on investment.
How do I prevent rust on my shipping container?
Rust prevention starts with proper placement — keep the container off direct soil contact using corner blocks or sleepers. Inspect annually for paint chips or surface rust and treat with a wire brush followed by rust-inhibiting primer and marine-grade paint. In coastal environments, apply a protective coating every 2–3 years for best results.
What payment methods does Cargo Container Supply accept?
We accept all major credit cards, bank wire transfers, ACH payments, and certified checks. For large orders or fleet purchases, we offer flexible financing options through approved third-party lenders. Contact our sales team for a custom financing quote tailored to your budget and project timeline.
Your Complete Pre-Purchase Checklist
Use this checklist before placing your order to ensure you've covered every critical decision point. A little preparation now saves time, money, and headaches later.
Shipping Container Buyer's Checklist
Run through every item before you commit to a purchase. If you're unsure about any point, our team is available to guide you through it — completely free of charge.
Before You Buy
- Determined the right container type for my use
- Chosen the correct size (20ft, 40ft, high-cube)
- Decided on new (one-trip) vs used (WWT/CW)
- Set a realistic total budget including delivery
- Checked local zoning and permit requirements
- Confirmed I need to buy (not rent) for my timeline
- Requested at least 2–3 price quotes for comparison
Site Preparation
- Identified and cleared the container drop zone
- Measured access road width and overhead clearance
- Confirmed ground is level, firm, and load-bearing
- Sourced corner blocks, sleepers, or a concrete pad
- Planned the final container orientation (door direction)
- Ensured delivery truck has clear 80–100ft run-in space
- Notified neighbors if delivery may affect access
Inspection & Sign-Off
- Requested photos of the specific container before purchase
- Verified CSC plate is current and legible
- Confirmed door seals, locks, and hinges are functional
- Checked floor integrity — no soft spots or rot
- Inspected base rails for structural rust or damage
- Completed light test to verify no holes in structure
- Signed delivery receipt only after personal inspection
You're Now Ready to Buy Your Perfect Shipping Container
Armed with this guide, you have everything you need to make a confident, informed purchase. Browse our full inventory online or speak directly with a container specialist today — no pressure, just expert advice and the best prices nationwide.