When buying a container house, the two most common sizes are 20ft and 40ft. 20ft vs 40ft container house，Many buyers struggle to decide which one is right for their project.
This guide compares shipping cost, space layout, and use cases to help you make the right choice.
1. Size and Space Comparison
| Size | External Dimensions (L×W) | Internal Area | Space Features |
|---|---|---|---|
| 20ft | 6.1m × 2.4m | ~14㎡ | Compact and functional — ideal for a single room |
| 40ft | 12.2m × 2.4m | ~28㎡ | Spacious and comfortable — ideal for a one-bedroom home |
Simply put: A 20ft is a “room”. A 40ft is a “home”.
2. Shipping Cost Difference
| Aspect | 20ft | 40ft |
|---|---|---|
| Cost per unit | Lower | Higher (1.5-1.8x of 20ft) |
| Cost per sqm | Higher | Lower |
| Units per 40ft container (Flat Pack) | 6-8 units | 3-4 units |
Key takeaway:
If you need 1-2 units, 20ft has a lower absolute shipping cost.
If you need more space or bulk orders, 40ft is more cost-effective per square meter
3. Best Use Cases
✅ 20ft container house is ideal for:
Single/double occupancy:工地 camps, hostel rooms, garden sheds
Pop-up stores / coffee stands:20ft is the perfect size for a standard retail unit
Small offices:2-3 people, compact and efficient
Projects with shipping constraints:Limited space for crane or truck access
✅ 40ft container house is ideal for:
Family living:One-bedroom layout with separate living and sleeping areas
Large offices:4-6 people, can accommodate a meeting area
Commercial spaces:Restaurants, showrooms, classrooms
Large project camps:Accommodating more people in one unit
4. Price Reference (20ft vs 40ft)
| Product Type | 20ft Price Range (FOB) | 40ft Price Range (FOB) |
|---|---|---|
| Standard Living Unit | $1,090–$1,890 | $1,890–$2,890 |
| Office (Glass Wall) | $1,990–$2,390 | $2,890–$3,890 |
| Pop-up Store (Commercial) | $1,490–$1,890 | $2,490–$2,890 |
*Note: 40ft units are typically 30%-50% more expensive than 20ft, but the cost per square meter is lower.*
5. FAQs
Q: How many people can live in a 20ft container house?
A: Compact setup: 2 people. With bunk beds: up to 4 people.
Q: Can I divide a 40ft into a one-bedroom layout?
A: Yes. 40ft units have enough space to create separate bedroom and living areas using partitions.
Q: Are there shipping restrictions for 40ft?
A: Both 20ft and 40ft are standard shipping sizes accepted at all global ports. However, confirm that local roads and crane access can accommodate 40ft units at your destination.
6. Conclusion
| Your Needs | Recommended Size |
|---|---|
| Single/double occupancy, pop-up store, small office | 20ft |
| Family living, large office, commercial space | 40ft |
| Tight budget, only need basic function | 20ft |
| Best cost per sqm, need more space | 40ft |
7. Next Step
How to choose container house size，Not sure whether 20ft or 40ft is right for you? Tell us your project details (number of people, use case, site constraints). We will recommend the best option and provide an accurate quote.
