A practical guide to comparing 10ft, 20ft, and 40ft shipping containers, with questions to ask about condition, delivery, and total cost before you buy.
Choosing a shipping container often starts with a simple question: what size do I need? But the better question is what you plan to do with it, where it will sit, and how it will get there. Size, condition, and delivery access all shape the final cost. This guide walks through the main decision points so you can compare listings with confidence and ask the right questions before you buy.
Start With the Job, Not the Number
It is tempting to pick a container size first and then figure out how to use it. A more reliable approach is to describe the job in plain terms.
- Storage: What are you storing, and how often will you access it? Will you need room to walk inside, or will you mostly load and close the doors?
- Workspace or project use: Will people spend time inside? Will you need light, ventilation, power, or insulation?
- Site placement: Where will the container sit, and how much room does the delivery truck have to maneuver?
- Long-term plans: Is this a temporary need, or are you planning a permanent addition to your property?
Once you know the job, you can narrow the size range and compare condition grades and delivery options more accurately.
Common Container Sizes and What They Are Usually Used For
Shipping containers are generally described by their nominal length in feet. The most common sizes are 10ft, 20ft, and 40ft. There are also 40ft high-cube units, which are taller than standard-height containers. Exact dimensions vary by manufacturer and type, so always confirm the specifications on the individual listing or the container's CSC plate.
10ft Containers
A 10ft container is the smallest common size. It fits into tighter spaces and can be easier to place on a residential lot where a full-size container would be difficult to maneuver. Because of their smaller footprint, 10ft units are often used for compact storage, tools, seasonal equipment, or small project shelters.
One trade-off is availability. Smaller containers are less common in some markets, and the price per square foot may be higher than for larger units. If you need a specific size, ask the Newport team what is currently available rather than assuming a particular size is in stock.
20ft Containers
A 20ft container is a middle-ground option. It offers more room than a 10ft unit while remaining more manageable on smaller sites. Many buyers choose 20ft containers for general storage, workshop setups, and small business use.
When comparing 20ft units, pay attention to:
- Condition grade: Is it wind and watertight, cargo-worthy, or a one-trip unit? Condition affects both appearance and price.
- Door type: Standard cargo doors are common. Some units have additional features or modifications.
- Floor and roof condition: Look for soft spots, rust, or previous repairs.
- Ventilation: If you plan to store moisture-sensitive items, ask about vents or condensation control.
40ft Containers
A 40ft container provides the most floor space of the common sizes. It is often used for larger storage needs, construction site materials, and projects that require significant interior room. The trade-off is site access. A 40ft container needs a longer, straighter approach for delivery, and not every property can accommodate one.
40ft High-Cube Containers
High-cube containers are taller than standard-height units. The extra height can be useful for taller items or for projects where interior headroom matters. However, high-cube containers may be more restricted on certain routes and can require different handling. Confirm height and delivery requirements with the Newport team before committing.
What Affects Shipping Container Prices
Container pricing is not a single number. It reflects the unit itself, its condition, and the work required to get it to your site. Rather than quoting a price here, this section explains the factors that typically move the number up or down.
Condition and Grade
- One-trip or new condition: Generally the cleanest and most expensive option.
- Cargo-worthy: Used but suitable for shipping; often a good balance of condition and value.
- Wind and watertight: Structurally sound and weather-resistant, but may show more cosmetic wear.
- As-is or project grade: Best for modifications or non-critical uses; condition varies widely.
Ask for details about the specific unit, not just the grade name. Photos and a description of dents, rust, and door operation can help you judge whether the condition matches your plans.
Size and Availability
Larger containers do not always cost more per unit than smaller ones, and smaller containers are not always cheaper. Availability in your region, current market conditions, and the specific unit's history all play a role. Confirm current pricing and availability with the Newport team.
Delivery and Site Access
Delivery is a major part of the total cost, and it depends on distance, truck type, and how easily the driver can reach the placement spot. Factors that can affect delivery include:
- Distance from the supplier or depot to your site.
- Road conditions and any low branches, wires, or narrow gates.
- Ground conditions — soft ground can make placement difficult or unsafe.
- Placement method — some sites allow a tilt-bed truck to slide the container into place, while others may need different equipment.
- Permits or approvals — some locations require permission for a container or for the delivery vehicle.
Do not assume that a particular size will avoid permits or that delivery will require specific extra equipment. Requirements vary by location and site. Check with your local authority and confirm delivery details with the Newport team.
Modifications and Add-ons
If you plan to add doors, windows, insulation, electrical work, or shelving, those changes affect both cost and timeline. Some modifications are best done before delivery; others can be done on site. Ask what is possible and what may affect the container's structure or warranty status.
How to Compare Listings Without Getting Overwhelmed
When you look at multiple containers, it helps to compare them on the same criteria. Use this checklist to keep your notes consistent.
- Size and type: 10ft, 20ft, 40ft, or high-cube.
- Condition grade and specific defects: Ask for photos of the roof, floor, doors, and corners.
- CSC plate and identification: The plate can provide specification details. Confirm what it says for the unit you are considering.
- Door operation: Do the doors open, close, and seal properly?
- Floor condition: Any soft spots, delamination, or repairs?
- Rust and paint: Surface rust is common; structural rust is a bigger concern.
- Delivery requirements: What access is needed, and what is included in the quote?
- Total cost: Unit price, delivery, any permits, and any preparation work.
- Timeline: When can it be delivered, and what happens if the site is not ready?
If a listing does not answer these questions, ask. A short conversation can prevent a costly surprise later.
Site Planning Basics Before You Buy
A container is only useful if it can be placed where you need it. Before you finalize a purchase, walk your site and consider the following.
Access Route
Measure gates, driveways, and turns. Look up for low branches, wires, and overhangs. Consider how a large truck will enter and exit, and whether other vehicles or structures are in the way.
Placement Surface
Containers are heavy, and they need a stable, level surface. Concrete pads, gravel, and compacted soil are common options. Soft ground can cause the container to settle or shift. If you are unsure, ask the delivery team what surface they recommend for your situation.
Drainage and Water Management
Water pooling around the base can lead to rust and deterioration over time. Plan for drainage and consider how rain will run off the roof and away from the container.
Local Rules and Approvals
Some areas have rules about temporary structures, setbacks, and permits. Requirements vary widely. Contact your local planning or zoning office to confirm what applies to your property. Do not rely on general advice about what is or is not allowed.
Frequently Asked Questions
What is the difference between a standard and a high-cube container?
High-cube containers are taller than standard-height containers. The extra height can be useful for taller items or for projects that need more interior headroom. Exact dimensions vary, so check the individual listing or the CSC plate for the specific unit.
Should I buy a new or used container?
It depends on your plans and budget. New or one-trip containers are generally cleaner and more expensive. Used containers come in a range of conditions, from cargo-worthy to project grade. If appearance matters, ask for photos. If you plan to modify the container, a lower-grade unit may be a practical starting point. Confirm the condition of the specific unit with the Newport team.
How much does delivery cost?
Delivery cost depends on distance, site access, truck type, and other factors. It is not a fixed number. The best way to get an accurate figure is to share your site details with the Newport team and ask for a quote. Be prepared to describe your access route, ground surface, and placement location.
Do I need a permit for a shipping container?
Permit requirements vary by location and by how you plan to use the container. Some areas have specific rules; others may treat it as a temporary structure. Contact your local authority to confirm what applies to your property. Do not assume that one size needs fewer permits than another.
Can I modify a shipping container?
Many buyers modify containers for storage, workshops, and other uses. Modifications can affect structure, weather resistance, and resale value. Talk with the Newport team about what you have in mind and whether it should be done before or after delivery. If structural changes are involved, consult a qualified professional.
Next Steps
If you are ready to compare containers, start by browsing current listings and noting the sizes and conditions that fit your plans. Then reach out with your site details so the team can help you think through delivery access and placement.
Before you buy, confirm listing details, availability, pricing, site access, and delivery requirements with the Newport team. A few minutes of planning can save time, money, and frustration.
Plan the next step
Confirm the container and the delivery plan.
Browse current listings, then speak with the Newport team to verify the unit, total pricing, site access, and delivery requirements before payment.