Best Free Deck Design Software (And the Catch)
The best free deck design tools are brand designers from Trex, TimberTech, and Lowe’s — all free and detailed, but each only prices its own products and the auto material list usually under-counts. Decks.com is the rare brand-neutral free option with code-referenced plans.
How they compare
Ordered by overall fit — free-tier value, output quality, platforms, and ease.
Greenplank Deck Designer
Truly freeA free, no-signup browser 3D deck designer with adjustable settings.
Arden AI Pergola Design
Free, with limitsFree AI pergola visualizer (no signup) that renders pergola styles onto an uploaded photo; advanced features may be paid.
Decks.com Deck Designer
Free, with limitsFree to design and download plans plus a suggested material list after a free signup, but you cannot change the framing lumber sizes and the materials are a suggested list, not a guaranteed takeoff.
Planner 5D Deck Design
Free, with limitsFree 2D/3D deck and patio design with drag-and-drop; some premium items and HD renders require payment.
Belgard Rooms Planner
Free, brand-lockedFree planner with pre-designed outdoor rooms and AR preview of Belgard paver/patio products.
Deckorators 3D Deck Builder
Free, brand-lockedFree template-based 3D deck builder locked to Deckorators products, generates a materials list and design report.
Deckorators Deck Visualizer
Free, brand-lockedFree product-combination visualizer locked to Deckorators decking, railing, and privacy screens.
Envision Outdoor Living Visualizer
Free, brand-lockedFree visualizer for pairing Envision composite decking and railing products in preset settings.
Fiberon Discovery Deck Designer
Free, brand-lockedFree with unlimited designs and a downloadable bill of materials, but the BoM is explicitly an estimate and every component is a Fiberon product.
FortressView Visualizer
Free, brand-lockedFree 3D framing and railing visualizer locked to Fortress Building Products with an autogenerated bill of materials.
Home Depot Deck Designer
Free, brand-lockedFree deck designer tied to Home Depot inventory with automatic material lists.
Hygge Pergola Configurator
Free, brand-lockedFree self-serve configurator for Hygge aluminum pergolas with 80,000+ configurations, leading to a purchasable product.
Lowe's Deck Designer
Free, brand-lockedFree with no purchase or account upgrade, but the material list and prices are pulled from Lowe's own inventory and the plans are not engineered or permit-ready.
Menards Deck Designer
Free, brand-lockedFree web deck designer that itemizes lumber/hardware with current Menards store pricing and full build packet.
MoistureShield Outdoor Project Hub
Free, brand-lockedFree account-based deck planning hub locked to MoistureShield collections, exports a project PDF.
NewTechWood Visualizer
Free, brand-lockedFree visualizer to apply NewTechWood decking, deck tiles, and siding to an uploaded photo or scene, with a materials list.
StruXure Pergola X Visualizer
Free, brand-lockedFree configurator for customizing StruXure Pergola X colors and accessories; ends in a quote request.
TimberTech / AZEK Deck Designer
Free, brand-lockedFree to design, save, compare and download a materials take-off, but the take-off only covers AZEK/TimberTech parts and starting a project signs you up for dealer and contractor outreach.
Trex Deck Designer
Free, brand-lockedCompletely free with no payment and no export paywall, but every board, railing and SKU it prices is a Trex composite product, so the shopping list only works if you actually buy Trex.
Wolf Home Products Deck Visualizer
Free, brand-lockedFree web visualizer for previewing Wolf deck board, post, railing, and baluster combinations.
Greenplank Deck Designer
Truly freeA free, no-signup browser 3D deck designer with adjustable settings.
Arden AI Pergola Design
Free, with limitsFree AI pergola visualizer (no signup) that renders pergola styles onto an uploaded photo; advanced features may be paid.
Decks.com Deck Designer
Free, with limitsFree to design and download plans plus a suggested material list after a free signup, but you cannot change the framing lumber sizes and the materials are a suggested list, not a guaranteed takeoff.
Planner 5D Deck Design
Free, with limitsFree 2D/3D deck and patio design with drag-and-drop; some premium items and HD renders require payment.
Belgard Rooms Planner
Free, brand-lockedFree planner with pre-designed outdoor rooms and AR preview of Belgard paver/patio products.
Deckorators 3D Deck Builder
Free, brand-lockedFree template-based 3D deck builder locked to Deckorators products, generates a materials list and design report.
Deckorators Deck Visualizer
Free, brand-lockedFree product-combination visualizer locked to Deckorators decking, railing, and privacy screens.
Envision Outdoor Living Visualizer
Free, brand-lockedFree visualizer for pairing Envision composite decking and railing products in preset settings.
Fiberon Discovery Deck Designer
Free, brand-lockedFree with unlimited designs and a downloadable bill of materials, but the BoM is explicitly an estimate and every component is a Fiberon product.
FortressView Visualizer
Free, brand-lockedFree 3D framing and railing visualizer locked to Fortress Building Products with an autogenerated bill of materials.
Home Depot Deck Designer
Free, brand-lockedFree deck designer tied to Home Depot inventory with automatic material lists.
Hygge Pergola Configurator
Free, brand-lockedFree self-serve configurator for Hygge aluminum pergolas with 80,000+ configurations, leading to a purchasable product.
Lowe's Deck Designer
Free, brand-lockedFree with no purchase or account upgrade, but the material list and prices are pulled from Lowe's own inventory and the plans are not engineered or permit-ready.
Menards Deck Designer
Free, brand-lockedFree web deck designer that itemizes lumber/hardware with current Menards store pricing and full build packet.
MoistureShield Outdoor Project Hub
Free, brand-lockedFree account-based deck planning hub locked to MoistureShield collections, exports a project PDF.
NewTechWood Visualizer
Free, brand-lockedFree visualizer to apply NewTechWood decking, deck tiles, and siding to an uploaded photo or scene, with a materials list.
StruXure Pergola X Visualizer
Free, brand-lockedFree configurator for customizing StruXure Pergola X colors and accessories; ends in a quote request.
TimberTech / AZEK Deck Designer
Free, brand-lockedFree to design, save, compare and download a materials take-off, but the take-off only covers AZEK/TimberTech parts and starting a project signs you up for dealer and contractor outreach.
Trex Deck Designer
Free, brand-lockedCompletely free with no payment and no export paywall, but every board, railing and SKU it prices is a Trex composite product, so the shopping list only works if you actually buy Trex.
Wolf Home Products Deck Visualizer
Free, brand-lockedFree web visualizer for previewing Wolf deck board, post, railing, and baluster combinations.
How we picked
Every pick here is chosen on real-world fit — free-tier value, platforms, 3D quality, and export options. Read the full method on our how we rate page.