Simple, honest pricing
The math is free. The permit packet is $29.
Size any deck for free, forever. When you’re ready to pull a permit, turn your numbers into a submittal document your inspector will recognise.
Free
$0
The full deck code calculator
- Joist, beam, post & footing sizing (IRC R507)
- Stair layout & guard height to code
- Frost-depth footings for all 50 states
- Material list & build-cost estimate
- Print the on-screen result
- Unlimited calculations, no account
Permit-ready
Pro plan
$29 one-time
Permit-ready deck plan packet
- Everything in Free, plus:
- Plan Studio: a printable permit submittal packet
- Title block for your project, address & permit #
- Plan view + section/elevation drawing
- Framing, footing and stair schedules
- Code-citation appendix (IRC R507/R311/R312)
- Lifetime access — re-generate any time, free revisions
Secure checkout via Stripe · lifetime access
A DeckHelm plan is a planning aid, not an engineering stamp. It packages the prescriptive IRC values into a clean submittal; spans beyond the code tables still need a licensed engineer.
Rather not build it yourself?
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Skip the Pro plan and tell us about your project — we’ll pass it to a contractor in your area. No obligation.
Building pros & deck companies
Run a deck-building business? We send qualified homeowner leads from this calculator to contractors. Email hello (at) deckhelm (dot) com to join the network.