If you’re planning to upgrade your outdoor space or build a new deck, you might be wondering, how much do composite stairs cost? Composite stairs have become a popular choice for homeowners due to their durability, low maintenance, and modern look. These stairs are made from a blend of wood fibers and plastic, offering a strong and long-lasting solution for your outdoor needs. But how much should you expect to pay for them?
In this post, we’ll explore the cost of composite stairs, as well as provide information on composite decking prices, so you can make an informed decision for your project.

How Much Do Composite Stairs Cost?
The cost of composite stairs varies depending on several factors, including the size of the stairs, the material quality, and the complexity of the design. On average, composite stairs can range anywhere from $50 to $100 per step for basic models. For a set of 10 steps, you can expect to pay between $500 to $1,000, excluding labor costs.
Here are the main factors that can affect the cost of composite stairs:
- Material Quality: Higher-end composite materials, which offer better resistance to fading, staining, and moisture, may cost more than basic options.
- Size and Design: Larger or more intricate designs, such as curved or custom-shaped stairs, will increase the price. A standard straight staircase will be less expensive to install than a more elaborate design.
- Installation: While you can install composite stairs yourself, hiring a professional contractor will add to the total cost. Labor costs for installation typically range from $50 to $100 per hour, depending on your location.
If you’re looking for a long-lasting, low-maintenance solution, the upfront investment for composite stairs is worth it. The durability and weather resistance of composite materials can save you money in the long run by reducing the need for repairs and maintenance.
How Much Would a 20×20 Composite Deck Cost?
If you’re building a composite deck, the size of the deck plays a major role in how much you’ll spend. A 20×20 composite deck (400 square feet) typically costs between $8,000 and $12,000 to build. The price can vary based on the quality of the composite material, additional features (like railings, stairs, or custom designs), and the labor costs in your area.
For instance, the cost of materials for a 20×20 deck can range from $4,000 to $7,000. The remaining budget will go toward labor and additional features. It’s important to get quotes from multiple contractors and consider any extra costs like permits or site preparation when budgeting for your deck.
If you’re planning to install composite stairs along with the deck, this will add to the overall cost. However, composite stairs will blend perfectly with the deck, giving your outdoor space a polished and cohesive look.
How Much is 500 sq ft of Composite Decking?
For those looking to install a larger outdoor space, you might be interested in how much 500 sq ft of composite decking would cost. On average, 500 square feet of composite decking can cost between $8,000 and $15,000. Again, this price range depends on several factors:
- Material: Premium composite decking materials can cost upwards of $30 per square foot, while more budget-friendly options may start at $10 per square foot.
- Labor: The cost of labor for installing composite decking is typically around $4 to $12 per square foot, depending on your location and the complexity of the job.
If you’re working with a limited budget, opting for a mid-range composite decking material can provide a balance of cost and quality. Be sure to get multiple quotes from contractors to ensure you’re getting a fair price.
Conclusion
So, how much do composite stairs cost? While the price can vary depending on the material, size, design, and installation, composite stairs generally range from $50 to $100 per step, with a full set of stairs costing between $500 and $1,000. Adding composite stairs to a deck can increase the total cost of your project, but the investment is worthwhile for its durability, low maintenance, and aesthetic appeal.
If you’re also building a composite deck, keep in mind that a 20×20 deck could cost between $8,000 and $12,000, and 500 square feet of composite decking can cost anywhere from $8,000 to $15,000. Budgeting for these expenses will ensure you’re prepared for the overall cost of your outdoor renovation.
Before starting your project, be sure to get quotes from contractors and carefully consider your options for materials. Composite stairs and decking are long-lasting, cost-effective solutions that will enhance your outdoor space for years to come.