16’/5m Domes
The 16’/5m dome is ideally suited for solo dwellers or couples seeking a compact and efficient living space. It's perfect as a tiny home, office, or a personal retreat. With its streamlined interior, it provides just enough room for essential furnishings with a cozy atmosphere.
20’/6m Domes
The 20’/6m dome strikes a perfect balance between spaciousness and cozy comfort, making it ideal for couples or small families. It offers ample room to include a comfortable living area and a functional kitchenette, with enough space for a compact bathroom.
23’/7m Domes
The 23’/7m dome offers a spacious and versatile environment, ideal for couples or small families needing a bit more room. It comfortably accommodates a kitchenette, full bathroom, and a king-sized bed, making it perfect for long-term living or luxurious guest quarters.
26’/8m Domes
The 26’/8m dome provides a generous expanse of space, making it an excellent choice for larger families or those seeking a more luxurious glamping experience. It can comfortably house integrated lofts, typically positioned above kitchen and bathroom areas, maximizing the use of vertical space.
30’/9m Domes
The 30’/9m dome is expansive and adaptable, perfect for full-size, long-term residential living for a family or a couple desiring extra room. Its ample space allows for a comprehensive layout including a full kitchen, bathroom, and multiple sleeping areas, with the option to add a half loft or full second floor.
33'/10m Domes
The 33ft / 10m dome is spacious and versatile, ideal for yoga retreats or residential living for a family or a couple. Its ample space allows for a comprehensive layout including a full yoga studio or a kitchen, bathroom, and multiple sleeping areas. There's also the option to add a half loft or a full second floor.
Choosing the right dome size is one of the most important early decisions in any dome project. Whether you are planning a backyard retreat, greenhouse, guest space, glamping rental, studio, or full-time residence, the size of your dome will shape everything from layout and comfort to budget, site preparation, heating, and future flexibility.
At Phoenix Domes, our standard dome sizes include 5 m, 6 m, 7 m, 8 m, 9 m, 10 m. Larger domes for expanded residential, commercial, retreat, or event uses are available as custom orders. Each size has its own strengths, and the “right” dome is not always the biggest one. The best choice depends on how you want to use the space, how many people it needs to serve, and how much finishing work you plan to add inside.
Start With the Purpose of the Dome
Before choosing a size, begin with the main purpose of the structure. A dome designed as a quiet garden room will have very different space requirements than one intended as a vacation rental, yoga studio, greenhouse, or year-round residence.
A smaller dome can be ideal for a focused use: a meditation space, growing dome, compact office, treatment space, alounge, or creative studio. A larger dome gives more flexibility for furniture, circulation, sleeping areas, kitchenettes, bathrooms, storage, and guest comfort.
Ask yourself:
Will the dome be used occasionally or every day?
Will people sleep in it?
Will it need a bathroom, kitchenette, or storage?
Will it be used privately or commercially?
Do you want one open space, or divided zones?
Could your needs grow in the future?
16'/5 m/210 sqft and 20'/6 m/290 sqft Domes:
Compact, Easy and Purposeful
A 5 m or 6 m dome is a great option when you want a smaller, efficient structure with a clear purpose. These sizes are popular for garden rooms, small greenhouses, personal retreats, compact studios, wellness spaces, or backyard features.
They work well when the interior does not need to accommodate too many competing functions. For example, a 5 m dome may be perfect as a reading room, plant sanctuary, meditation space, or small creative hideaway. A 6 m dome offers a little more breathing room and can support a more flexible setup with seating, shelves, plants, or simple furnishings.
These sizes are often easier to place on a property, require a smaller platform, and can feel very cozy and intentional. They are also much easier to set up with just a ladder and a few friends!
However, they may feel limited if you are hoping to include multiple beds, a full bathroom, a kitchenette, or extensive storage.
23'/7 m/400 sqft and 26'/8 m/520 sqft Domes:
Flexible Mid-Sized Options
A 7 m or 8 m dome can be a strong choice for customers who want more versatility without moving into a very large structure. These sizes can work well for glamping units, guest suites, studios, treatment rooms, lounges, greenhouses, or small retreat spaces.
An 8 m dome is often a practical size for people who want a comfortable recreational or hospitality space. It can allow for a bed, sitting area, small dining setup, or simple kitchenette, depending on the layout. For short-term stays, it offers a good balance of atmosphere, usability, and cost.
For business owners, 7 m and 8 m domes can also be appealing because they are large enough to create a memorable guest experience while still being manageable in terms of site preparation, heating, maintenance, and interior finishing.
30'/9 m/690 sqft and 33'/10 m/845 sqft Domes:
Spacious, Comfortable, and Highly Livable
A 9 m or 10 m dome is better suited for projects that need more comfort and flexibility. These sizes are often chosen for larger glamping rentals, guest accommodations, studios, yoga spaces, small residences, or multi-use retreats.
The added diameter gives you more freedom to create zones within the space. For example, you may be able to include a sleeping area, sitting area, dining area, kitchenette, bathroom, and storage without the dome feeling overly crowded.
A 10 m dome can feel especially generous as a short-term rental or private retreat because guests have room to move, relax, and enjoy the open volume of the structure. It also gives designers more flexibility when working around curved walls and triangular geometry.
For customers considering a dome as a residence or semi-permanent living space, 9 m and 10 m domes are often a more realistic starting point than smaller sizes, especially if the interior will include everyday living functions.
Large Domes:
For Retreats, Events, Businesses, and Expanded Living
Large domes are ideal when the dome needs to serve a bigger purpose. These may include retreat centers, event venues, group yoga spaces, classrooms, large studios, dining spaces, commercial hospitality projects, or larger residential layouts.
The key benefit of a large dome is flexibility. With more interior volume, you can accommodate groups, create separate activity zones, include larger furnishings, and design a space that feels open even when many people are inside.
Large domes also require more planning. The platform or foundation will be larger, site access becomes more important, and heating, cooling, ventilation, permitting, and engineering considerations may be more involved. For commercial or public-facing uses, you may also need to consider occupancy, washrooms, accessibility, fire safety, and local code requirements.
Think Beyond Floor Space
When comparing dome sizes, it is easy to focus only on the diameter or square footage. But the experience of being inside a dome is also shaped by ceiling height, usable wall area, furniture placement, natural light, and the open feeling created by the curved structure.
Domes feel different from rectangular buildings. The open span creates a sense of spaciousness, but the curved walls also mean that furniture and built-ins should be planned carefully. Beds, sofas, shelving, counters, and bathroom walls all need to be considered in relation to the dome’s shape.
For this reason, it is helpful to sketch a basic layout before choosing your final size. Even a simple floor plan can reveal whether the space will comfortably fit your intended use.
Budget Also Changes With Size
The dome itself is only one part of the project. As the size increases, other costs may also increase, including the platform, insulation, interior finishing, heating and cooling systems, utilities, delivery, installation, and permitting.
A smaller dome may be more affordable and faster to prepare for, while a larger dome may offer more long-term value if it prevents you from outgrowing the space too quickly.
The best approach is to choose the smallest dome that comfortably supports your intended use, while allowing enough flexibility for real-life comfort.
Final Thoughts
The right dome size depends on your goals. A 5 m or 6 m dome can be perfect for a compact retreat, greenhouse, or studio. A 7 m or 8 m dome offers greater versatility for guest stays, creative use, and small rental projects. A 9 m or 10 m dome provides more livable comfort and layout flexibility. Large domes open the door to group use, commercial projects, events, and expanded residential possibilities.
Choosing a dome is not just about size. It is about imagining how the space will feel, how it will function, and how it will support your lifestyle or business over time.
Whether you are creating a peaceful backyard escape, launching a glamping business, building a studio, or planning a future dome home, the right size will help your project begin with confidence.
