12x18 Deck Layout
A 12x18 deck delivers enough space to host a crowd outside, whether that's a full outdoor dining setup or a split between dining and lounging. ArcSite's 12x18 deck layout template hands you a framed starting point you can adjust to your own site.
Key Features
This 12x18 deck layout includes:
- A true 216 square foot footprint across a 12 by 18 foot run
- The beam centered across three matching bays instead of one long span
- A dimension line marking each 6-foot bay along the depth
- The on-center spacing already spelled out at 24 inches
- A rim joist callout marking the house tie-in
With the spacing already spelled out, you won't need to add the callout yourself before handing this off to a crew.
Accurate to scale
Design from anywhere
Professional results
Design tips
Key Considerations When Designing a 12x18 Deck Layout
Frequently asked questions
Is the on-center spacing already labeled, or do I need to add it?
It's already spelled out at 24 inches, so there's nothing to add before you hand this drawing to a crew.
Can I change this from three bays to a single long span?
Yes! ArcSite lets you remove the center beam split and reframe it as one continuous span if your site allows it.
Can I share this drawing with my crew directly from ArcSite?
Yes. You can export the layout or send it straight from ArcSite so your crew is working from the same plan.












