20×16 Deck Cost Calculator: 2026 Price Guide

20×16 deck costs between $6,400 and $20,800 for most homeowners in 2026, depending on material and location. At 320 square feet, it is the same size as a 16×20 but with a wider shorter footprint, making it a good choice for yards that are wider than they are deep.

Frequently Asked Questions

How much does a 20×16 deck cost in 2026?

A 20×16 deck costs between $6,400 and $11,200 for pressure-treated wood and $11,200 to $20,800 for composite decking. At 320 square feet it is the same size as a 16×20 with a different proportion.

How is a 20×16 different from a 16×20?

A 20×16 and 16×20 are the same square footage but with opposite proportions. A 20×16 is wider and shallower while a 16×20 is narrower and deeper. Choose based on your yard shape and how you want the deck to relate to your house.

What can fit on a 20×16 deck?

A 20×16 deck fits a large dining table, a full outdoor sofa set, and a grill station. The extra width compared to a 16×20 can feel more open and allows for wider furniture arrangements across the face of the house.

How long does it take to build a 20×16 deck?

A 20×16 deck typically takes 5 to 8 days for an experienced crew. The wider footprint adds to the framing complexity compared to narrower decks of similar square footage.