DeckMath
All shapes
Curved deck · all 20 popular sizes

Curved Deck Cost by Size

A curved deck uses a steam-bent or laminated radial rim joist to create an organic, gallery-style edge — typically on the back side facing the yard.

1.35× labor vs rectangular28% waste factor
Best for

High-end builds where the deck is a visual centerpiece, landscape-architecture-coordinated installs, pool surrounds following a curved pool wall.

Watch-outs

Specialty trade — only ~15% of decking contractors quote curved work. Get 3+ bids, expect them to vary 40-60%. Some composite brands void warranty for curved installs.

Pick your curved deck size

Open the calculator with curved pre-loaded

Use the full cost calculator to dial in your exact material, railing, stair, and footing specs. Apply the 1.35× multiplier shown above to the rectangular baseline.