Why Build Your Own Space?
Custom outbuildings cost $20,000–$60,000 from contractors. Prefab sheds are one-size-fits-all and can't be reconfigured. Converting garages reduces home value. The Flexosphere is a modular building system that adapts to any purpose — design it yourself, build it from standard lumber, and reconfigure it when your needs change.
What You Get
Everything you need to go from idea to finished structure
Construction Plans
Complete cut lists, assembly sequences, and connection details for every module in your chosen product.
Bill of Materials
Exact quantities and dimensions for every piece of lumber, fastener, and material you need to buy.
3D Configurator Access
Design your layout in our free 3D configurator. Experiment with module combinations before you cut a single board.
Builder Network
Connect with local lumber yards and builders. Share your design, get real quotes, find people who can help.
How It Works
Design
Configure your layout in the free 3D tool. Choose modules, materials, and placement.
Plan
Get your bill of materials, cut list, and assembly sequence. Order materials locally.
Build
Follow the step-by-step handbook. Standard tools, standard lumber, no special skills.
Why Flexosphere?
Build Anything
Office, studio, workshop, meditation space, guest room, music room — the same modular system adapts to any function you need.
22 Interchangeable Modules
Walls, windows, doors, vents, and specialty panels snap together in any configuration. Reconfigure anytime your needs change.
Take It With You
Trailer-mountable on a standard flatbed. Move to a new site, sell it intact, or disassemble and rebuild in a new layout.
Technical Specifications
| Base Diameter | 3.7 m (12 ft) |
| Floor Area | ~9.3 m² (~100 sq ft) |
| Height | ~3.0 m (~10 ft) |
| Module Count | 22 interchangeable panels |
| Structure | Standard dimensional lumber (2×4, 2×6) |
| Foundation | Pier blocks or trailer-mounted |
| Insulation | R-13 to R-19 (climate dependent) |
| License | CERN Open Hardware License v2 |
Engineering Views
Get the Complete Build System
Step-by-step handbook, cut lists, material specs, and assembly guides — plus lifetime updates and community access. From $29.
See Pricing & Editions30-day money-back guarantee · Open-source license included
Get Quotes from Local Builders
Design your configuration in our free online tool, then get material quotes from suppliers near you.
Design & Get QuotesBuilder Tools
Everything you need to build with precision — from templates to jigs.
MDF & Paper Templates
Precision CNC-cut MDF routing guides and full-scale paper patterns for accurate fabrication.
View Templates →3D-Printable Jigs
Download STL files for assembly jigs, alignment tools, and drilling guides. Print at home.
Drop-Ship Jig Kits
Professional-grade steel and aluminum jigs shipped directly to your door.
Frequently Asked Questions
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OPEN SOURCE HARDWARE
The Thiosphere™ SDK, the foundation to all our products, is open source hardware. In fact, all Thios products are. Specifically the CERN Open Hardware Licence Version 2 - Strongly Reciprocal.
That's a fancy way of saying that if you want to use our design, even for commercial purposes, you have to share your changes with everyone else.