Complete Guide to Designing and Building a 20ft Container House: Floor Plans, Sizes, and Construction Tips

Building a home from shipping containers has become a popular choice for many. These small homes are affordable, eco-friendly, and easy to relocate. Among the different sizes available, the 20ft container offers a perfect balance of space and simplicity. In this guide, we’ll break down everything you need to know—floor plans, sizes, and how to build your own container home.

Understanding Container House Basics

What is a Container House?

A container house is a home made from repurposed shipping containers. These modular units can be stacked or connected to make larger living spaces. They are durable, quick to assemble, and require less waste than traditional building methods.

Why Choose a 20ft Container?

A 20ft container is a practical choice for small families or single residents. It measures about 6 meters in length and around 4.87 meters in width. This size allows enough space for essential areas without feeling cramped. Plus, it’s easier and cheaper to transport and modify compared to larger versions like the 40ft container.

Detailed Floor Plan and Size Specifications

Overall Layout and Dimensions

The home is built from two 20ft containers placed side by side. The total width is 16 feet (4.87 meters) with a length of 20 feet (6 meters). The entire area covers roughly 320 square feet, making it ideal for small but comfortable living.

Exterior Design and Outdoor Spaces

The front of the house features a small outdoor seating area, perfect for relaxing outdoors. A sliding door connects this space with the main interior, creating a seamless flow. Outdoor patios like this add charm and usability to compact homes.

Interior Layout Breakdown

Living Room and Kitchen Area

Size: 11 feet by 11 feet (3.35 meters x 3.35 meters)
Features: A sofa set, refrigerator, a burner stove, and a sink.
Design: An L-shaped unit lines the wall. A large window provides ventilation and natural light, making the space feel bigger.

Bathroom Details

Size: 4 feet by 7 feet 8 inches (1.21 meters x 2.33 meters)
Fixtures: A water closet, shower, and sink.
Ventilation: A ventilator keeps the space fresh. An outside wash basin adds extra functionality.

Bedrooms

Room 1: 7 feet 6 inches by 8 feet (2.28 meters x 2.43 meters)
Room 2: Same size as Room 1
Features: Each has a bed, wardrobe, and a window for airflow.

This layout proves that even small spaces can be efficient and cozy when planned well.

Construction and Design Considerations

Structural Integrity and Material Selection

Use high-quality, corrosion-resistant steel for the container structure. Reinforce the joints and corners for safety and long-term durability. Insulation is also key—consider foam or spray insulation to keep inside comfortable year-round.

Interior Design Tips for Small Spaces

Getting the most out of limited space involves smart choices. Use multi-purpose furniture, like fold-away beds or wall-mounted storage. Maximize natural light with large windows or glass doors to reduce the need for artificial lighting.

Plumbing and Electrical Setup

Plan your plumbing carefully. The bathroom fixtures share water lines with the kitchen to reduce complexity. Electrical systems should be installed by professionals, following safety standards.

Insulation and Climate Control

Climate can vary wildly, so insulation is a must. Use materials that work well in your region—rooftop AC units for hot climates or space heaters for colder areas. Good insulation keeps energy costs low and makes the home comfortable.

Cost Analysis and Budgeting

Building a 20ft container home can cost anywhere between $10,000 and $30,000, depending on finishes and local prices. To save money, choose cost-effective materials and DIY some of the work. Remember, energy-efficient features like good insulation and LED lighting can cut your bills long-term.

Real-World Examples and Success Stories

Many people have created stunning homes from 20ft containers. For example, some small families currently live comfortably in such homes, often adding solar panels or eco-friendly plumbing. Their stories show that with some planning, a container house can be both affordable and beautiful.

Expert Tips and Best Practices

Work with engineers and architects if you want custom designs or planning approval.
Think about future expansion—adding extra containers later is easier than redesigning.
Always stay within local building codes to avoid legal trouble.

Actionable Steps for Building Your Own Container Home

Sketch your ideal layout on paper or using software.
Find reliable suppliers for quality containers.
Consult professionals for structural and electrical work.
Obtain necessary permits before starting construction.
Build step-by-step, from foundation to final finishes.

Conclusion

A 20ft container home offers a smart way to own a cozy, sustainable, and portable house. With careful planning, the right materials, and a clear design, you can turn a simple shipping container into your dream living space. Small homes like this prove that less can be more—more affordable, more functional, and more eco-friendly.

Ready to Build Your Container Home?

Share your ideas or questions in the comments below. Pass this guide to friends interested in tiny living. And don’t forget to subscribe for more free house plans, tips, and ideas. Your container home adventure starts now!