Alan's Factory Outlet 3D Builder vs Bulldog Steel Structures Designer: Which Should You Use?
The verdict
Alan's Factory Outlet 3D Builder and Bulldog Steel Structures Designer are both home & construction design tools, compared here side by side. Alan's Factory Outlet 3D Builder is free, brand-locked (Free) and runs in any web browser with nothing to install; Bulldog Steel Structures Designer is free, brand-locked (Free) and runs in any web browser with nothing to install. Both are close on the basics, so the choice comes down to which free-tier limits and platform support fit your project.
Free tiers & pricing last verified Jun 23, 2026.
Pick Alan's Factory Outlet 3D Builder if…
Free, brand-lockedBuyers wanting an instantly-priced metal garage
Pick Bulldog Steel Structures Designer if…
Free, brand-lockedVisualizing a custom steel garage before quoting
Side by side
Alan's Factory Outlet 3D Builder
Free, brand-lockedFree 3D carport/garage builder with instant zip-based pricing and online ordering, limited to Alan's metal building catalog.
Bulldog Steel Structures Designer
Free, brand-lockedFree 3D carport/garage design tool with live price changes; you save and submit for a quote rather than checkout.
Read the full reviews
Alan's Factory Outlet 3D Builder
Free 3D carport/garage builder with instant zip-based pricing and online ordering, limited to Alan's metal building catalog.
Bulldog Steel Structures Designer
Free 3D carport/garage design tool with live price changes; you save and submit for a quote rather than checkout.
Alan's Factory Outlet 3D Builder vs Bulldog Steel Structures Designer: questions, answered
What is the main difference between Alan's Factory Outlet 3D Builder and Bulldog Steel Structures Designer?
Both are close on the basics, so the choice comes down to which free-tier limits and platform support fit your project.
Is Alan's Factory Outlet 3D Builder or Bulldog Steel Structures Designer free?
Alan's Factory Outlet 3D Builder is free, brand-locked and Bulldog Steel Structures Designer is free, brand-locked. Alan's Factory Outlet 3D Builder: Free 3D carport/garage builder with instant zip-based pricing and online ordering, limited to Alan's metal building catalog. Bulldog Steel Structures Designer: Free 3D carport/garage design tool with live price changes; you save and submit for a quote rather than checkout.