Get matched with top deck cleaning pros in Pebble Beach, CA

The cost to build a second-story deck averages $4,800, though the actual price could range as low as $420 to upwards of $16,000. While labor costs range between 35% and 50% of the total project cost, the materials and complexity of design will ultimately lead you to save or spend more money on this home addition.

Yes, adding a composite deck, such as one made from Trex, can significantly increase your home's value. It is a valuable home renovation for recouping costs, with some estimates for return on investment (ROI) ranging between 60% and 70%. More recently, Remodeling's 2024 Cost vs. Value Report suggests a deck addition has an ROI of 82.9%, with an average resale value of nearly $14,600. A new deck makes your yard more functional, enhances the landscape's aesthetic, and can entice prospective buyers. The investment may have a higher return if the deck adds usable square footage to the property.

Expect to spend around $10,000 to $11,000 to replace a 20-by-20-foot deck. Using high-end materials like composite or exotic hardwoods can drive up the cost, as can custom features and design elements. You can also expect to pay more than average if your deck replacement requires a site evaluation or if you need the work done during the busy season.

In most cases, there should be a small gap between the house and the deck, usually no more than ½ to ¾ of an inch. This space allows water and moisture to flow through instead of pooling against the side of your house. It also lets flashing protect your siding from runoff, which is one of the most common issues with decks.