DeckMath
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T-shape deck · all 20 popular sizes

T-shape Deck Cost by Size

A T-shape deck pushes a centered platform out from the main rectangle — typically housing a grill island, fire pit, or dining table set off from the lounge area.

1.10× labor vs rectangular10% waste factor
Best for

Mid-large lots where you want a 'destination' off the main deck (firepit, hot tub, kitchen) without committing to multi-level.

Watch-outs

The T-junction is structurally complex — most jurisdictions require an engineer-stamped plan for the splice connection.

Pick your t-shape deck size

Open the calculator with t-shape pre-loaded

Use the full cost calculator to dial in your exact material, railing, stair, and footing specs. Apply the 1.10× multiplier shown above to the rectangular baseline.