How Much Does It Cost to Build a Deck In The South Suburbs of Chicago?

For a lot of homeowners, the backyard starts out as an afterthought. Then spring and summer hit, friends come over, the grill gets fired up, and suddenly everyone realizes the same thing, the backyard could be so much more. A well-built deck changes the way a home feels. It creates a space to host family, relax after work, or simply enjoy the

outdoors without feeling like you’re sitting in an empty yard. But one of the first questions homeowners ask is simple: “What does a deck actually cost?” The truth is, there is no one-size-fits-all answer. Deck pricing depends on materials, layout, elevation, railings, roofing features, lighting, and the overall vision for the space. A small pressure-treated deck will look very different from a fully customized composite entertaining area with built-in lighting and a covered patio roof. At EZ Custom Homes, we’ve worked with homeowners throughout the south suburbs of Chicagoland to design outdoor living spaces that fit both lifestyle and budget. Here’s what homeowners should

realistically expect when planning a deck project.

Average Deck Costs in Chicagoland

In today’s market, most professionally built decks in the Chicagoland area fall somewhere between $10,000 and $50,000+, depending on size and features. A smaller pressure-treated wood deck may land closer to the lower end of the range, while larger composite decks with custom features can quickly move into premium pricing territory. Here’s a general breakdown homeowners can expect: • Basic pressure-treated deck: approximately $10,000–$18,000 • Mid-range composite deck: approximately $18,000–$35,000 • Luxury outdoor living space with roofing, lighting, and custom features: $40,000+ The biggest thing homeowners should understand is that a deck is not just lumber and screws. Proper framing, permits, structural integrity, drainage

planning, and craftsmanship all play a major role in the final result.

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What Impacts Deck Cost the Most?

1. Material Selection

Material choice is one of the biggest pricing variables. Pressure-treated wood is generally the most affordable upfront option, while composite decking costs more initially but requires significantly less maintenance over time. Composite decking has become increasingly popular because homeowners want durability, lower maintenance, and a cleaner finished appearance. Many homeowners no longer want to spend summers staining and sealing their deck every few years. 

2. Size of the Deck

Larger decks naturally require more material, labor, framing, and foundation work. A simple 12x12 platform deck is very different from a large wraparound entertainment space.

3. Elevation and Complexity

Ground-level decks are usually more straightforward than elevated structures. Once stairs, multiple levels, custom layouts, or complicated framing are introduced, labor and engineering requirements increase. 

4. Railings and Finishes

Railings can significantly affect pricing. Cable rail systems, aluminum railings, and custom finishes add cost but also dramatically improve the overall appearance of the project.

5. Outdoor Living Features

Lighting, patio roofs, outdoor kitchens, pergolas, fireplaces, and built-in seating all elevate the project from “deck” to full outdoor living experience.

What Most Homeowners Get Wrong

One of the biggest mistakes homeowners make is comparing deck quotes strictly by price. A cheaper quote does not always mean a better deal. In many cases, lower pricing can mean corners are being cut somewhere in the process. Some contractors may leave out permits, reduce framing quality, use lower-grade materials, or overlook important structural details. While those shortcuts may lower the upfront price, they can create major problems later. Another mistake homeowners make is underestimating how important design is. A deck should feel connected to the home and the backyard as a whole. Layout, traffic flow, shade, privacy, and functionality all matter. The best outdoor living spaces are planned intentionally, and not rushed together piece by piece.

The Long-Term Value of Outdoor Living

Outdoor living spaces have become one of the most valuable upgrades homeowners can invest in. Beyond resale value, a deck changes how homeowners actually use their property. Instead of feeling limited to indoor square footage, families gain an entirely new area to relax, entertain, and spend time together. In many cases, homeowners

find themselves using their outdoor living space more than expected. Summer dinners, weekend gatherings, watching sports outside, or simply enjoying a quiet evening all become easier with a functional backyard setup. A professionally designed deck also improves curb appeal and helps a home stand out in competitive housing markets.

Frequently Asked Questions

How long does it take to build a deck?

Most deck projects take anywhere from one to four weeks depending on size, weather, permits, and complexity.

Do I need permits for a deck in Illinois?

In most cases, yes. Permit requirements vary by municipality, but professional contractors should handle this process for homeowners.

Does composite decking get hot?

Composite decking can warm up in direct sunlight, but color selection and layout planning can help minimize heat retention.

What adds the most cost to a deck?

Custom features like patio roofs, lighting, multiple levels, premium railings, and outdoor kitchens typically create the largest cost increases.

Final Thoughts

Building a deck is about more than increasing square footage outside. It is about creating a space homeowners actually enjoy using. Whether the goal is a simple backyard upgrade or a fully customized outdoor entertainment area, understanding the real factors behind deck cost helps homeowners plan smarter and avoid surprises. At

EZ Custom Homes we help homeowners throughout the south suburbs of Chicagoland

design outdoor living spaces that are built around quality, functionality, and long-term value. If you’re planning a deck, remodel, custom home, or outdoor living addition, now is the perfect time to start the conversation.

👉 Ready to start planning? Contact us today.