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20 ft Geodesic Event Dome
Available to purchase or rent · Made to order
- ⌀ 20 ft diameter
- Approx. 296 sq ft
- Approx. apex height: 10 ft
- Typical setup: 2 days
Approximate dimensions for initial planning. Sizes are subject to change during engineering. Final dimensions and required installation clearances will be confirmed for your project.
A 20 ft geodesic event dome on an engineered steel frame, with clear, translucent, blackout, or printed polymer covers to suit the project. The same size supports private gatherings, dining, weddings, corporate events, projection shows, wellness sessions, and more — the layout is yours.
Every event dome is configured and quoted for its project: covers, doors, options, delivery, installation, and schedule are confirmed with you before anything is built.
Ways to Use It
- Private gatherings
- Restaurants and dining
- Weddings
- Corporate events
- Projection and immersive shows
- Yoga and wellness
- Festivals and concerts
- Lounges and hospitality
Capacity and height are planning estimates only. Final layout depends on your interior program, local rules, and engineering — we estimate them for your project during quoting.
Cover Choices
- •Clear
- •Translucent
- •Blackout
- •Printed and branded covers
- •Interior liners
- •Additional options depending on the project
Options We Quote
- Flooring
- Printed branding
- Lighting
- Climate control
- Projection
- Sound and AV
- Technical staffing
- Additional doors
- Connecting tunnels
- Delivery
- Installation
Ask about custom and larger sizes. Feasibility, availability, engineering, logistics, and lead time are confirmed for each project.
Specifications and Documentation
Approximate dimensions for initial planning. Sizes are subject to change during engineering. Final dimensions and required installation clearances will be confirmed for your project.
- Diameter
- 20 ft
- Floor area
- Approx. 296 sq ft
- Apex height
- Approx. 10 ft (planning estimate)
- Typical setup
- 2 days
- Frame
- Engineered steel geodesic frame. Frame and member sizing can vary with the engineering for your project.
- Covers
- Polymer covers in clear, translucent, blackout, or printed and branded finishes, with liners and additional options depending on the project.
- Fire documentation
- Flame-retardancy documentation (NFPA 701 / CPAI-84) is available from the fabric vendor. Local and state requirements vary, so the applicable documentation is provided and confirmed during quoting.
- Wind and anchoring
- Wind and anchoring performance depends on the engineering report for your dome, the anchoring or ballast used, ground and site conditions, and local rules.
- Warranty
- Warranty is pro-rated and depends on the use case. Terms are provided with your quote.
- Availability
- Made to order. Schedule is confirmed during quoting.
- Permits and engineering
- Permitting documentation and engineering are available in all 50 states. Anchoring and project documents depend on the engineering and the specific job.
Delivery and Installation
Delivery, installation, and removal are quoted with your project. Site access for delivery vehicles and installation equipment, working room around the dome, and anchoring or ballast per the engineering are confirmed during planning.
Orders and Cancellations
Event domes are custom-manufactured, so they are generally non-returnable and non-refundable once a deposit has been made and manufacturing has begun. Exact terms vary by project and are set out in your quote and contract. If The Dome House causes a manufacturing error, a missing part, or another project issue, we will remedy it.
20 ft Event Dome FAQs
How many people fit in the 20 ft Event Dome?
The 20 ft Event Dome covers approximately 296 square feet. Capacity and height are planning estimates only. Final layout depends on your interior program, local rules, and engineering — we estimate them for your project during quoting. Tell us how you plan to use the space and we'll estimate capacity for your layout.
How long does the 20 ft Event Dome take to set up?
Typical setup for this size is about 2 days. Installation services are available and are scheduled and quoted with your project, along with site access, anchoring, and any options you choose.
Can I rent the 20 ft Event Dome instead of buying it?
Yes. Every standard size can be purchased or rented. Rentals cover the dome and its cover; delivery, installation, and removal are quoted as part of the project.
Get a Quote for the 20 ft Event Dome
Tell us about the events you're planning — purchase or rental, indoors or out — and we'll confirm the configuration, cover options, delivery, installation, and schedule in a complete quote.