You spent $35,000 on a new deck last summer, and by October you were already mentally planning a rebuild. The framing felt cramped, the afternoon sun made the seating area unusable, and the stairs were awkwardly placed. You're not alone. After 15 years building decks across Cary and the rest of McHenry County, I've watched homeowners make the same seven mistakes over and over. Here's what to avoid if you're planning a Deck Building project in 2026.
1. Ignoring Your Home's Architecture and Scale
The most common mistake I see is treating a deck like an afterthought. Homeowners pick a size and shape that fits their budget or their lot, without considering how it relates to the house. A deck should look like it was always part of the original design. If your home is a classic Craftsman with deep eaves and exposed rafters, a sleek, minimalist deck with no railings will look like a floating platform from a different house. On the other side, a ranch-style home with horizontal siding looks odd with a tall, multi-level deck with ornate Victorian spindles.
Scale matters just as much as style. A deck that is too small for the house makes the entire property feel off. A deck that is too large can overwhelm a modest home and eat up your entire yard. The general rule of thumb in the Cary area is to keep the deck footprint to no more than 20 percent of your home's total square footage, but that varies by lot. The best approach is to have a professional like Burns Carpentry visit your property for an initial site consultation. We look at your home's roofline, window placement, and exterior finishes, then design a deck that complements rather than competes.
One more thing: don't ignore the roofline. A deck that butts up against a gable end with no transition looks like an afterthought. Adding a pergola or a covered section that mirrors the roof pitch creates visual flow. Burns Carpentry's Premium Outdoor Living Package often includes a custom pergola that ties the deck into the home's architecture. It is a small detail that makes a huge difference.
2. Overlooking Sun Exposure and Shading Needs
You picked the perfect spot for your grill and seating area, but by 3 PM in July, the composite decking is hot enough to fry an egg, and your guests are huddled under a single umbrella. This is the second most common regret I hear. Homeowners forget to observe how the sun moves across their yard throughout the day and across the seasons.
In Cary, the sun angle changes dramatically from June to September. A deck that gets full western exposure in June will be unbearable from 2 PM until sunset. The solution is not to build a smaller deck. It is to plan for shade from the start. A pergola with adjustable louvers can block direct sun while letting in light. A retractable awning gives you flexibility. Even a well-placed shade sail can make a 200-square-foot seating area comfortable for an extra three hours a day.
If you are planning a deck building project in 2026, take at least one afternoon to sit in your yard at different times. Note where the shadows fall. Then talk to Burns Carpentry about integrating a pergola or a covered section into your design. We can orient the seating area to capture morning sun and avoid afternoon heat. It is a simple planning step that turns a deck from a seasonal afterthought into a year round living space.
3. Skimping on Railing and Staircase Design
Railings and stairs are often treated as an afterthought. Homeowners pick the cheapest option from the lumberyard and call it done. But these elements are the most visible parts of your deck from the street and from inside your home. A poorly designed railing makes a $40,000 deck look like a $15,000 one.
Think about the view from your kitchen window. If the railing is a solid wall of vertical balusters, you have blocked your sightline to the yard. Consider cable railings or glass panels for an unobstructed view. For a more traditional look, a top rail that is wide enough to set a drink on adds function and style. The stairs are even more important. A staircase that is too narrow or has awkward riser heights feels dangerous and wastes space. The standard is a 7-inch riser and an 11-inch tread, but if your deck is more than 30 inches off the ground, you need a landing every 12 feet of vertical rise. That is code in McHenry County, and Burns Carpentry handles all the permit applications to make sure it is done right.
Here is the insider tip: do not let your deck builder use pressure-treated pine for the railing posts if you are building with composite decking. The wood will shrink, twist, and crack within two years, creating gaps that look terrible. Burns Carpentry uses aluminum or stainless steel post sleeves that match the composite material. It costs a bit more upfront but saves you from replacing rotted posts five years down the road.
4. Forgetting About Traffic Flow and Zoning
You designed a beautiful deck with a seating area, a grill station, and a dining table. But the path from the grill to the table goes right through the seating area, forcing guests to squeeze between chairs every time you flip a burger. This is a flow problem that makes your deck feel cramped even when it is technically large enough.
Good deck design creates zones. The cooking zone should have a clear path to the dining zone. The dining zone should be separate from the lounging zone. The path from the house door to the grill should be wide enough for two people to pass, at least 48 inches. The path from the grill to the dining table should be at least 36 inches. If you are planning to entertain more than 10 people, add a dedicated serving counter near the grill so guests are not crowding the cooking area.
Another zoning issue I see in Cary homes is the placement of the stairs. A staircase that dumps you into the middle of the lawn is fine for access, but if you have a patio or a garden path, align the stairs to meet them. Burns Carpentry's design process includes a detailed site plan that accounts for your existing landscaping and hardscaping. We map out the traffic flow from the house to the deck to the yard, so you are not creating a bottleneck.
5. Neglecting Lighting and Electrical Planning
This is the mistake that makes homeowners call us back within a year. They finish the deck, love it all summer, then realize they cannot use it after dark. The solution is not to staple string lights to the railing after the fact. That looks messy and provides uneven light. You need to plan for low-voltage LED lighting during the design phase.
Think about three types of lighting. Task lighting goes under the railing and along the stairs to prevent tripping. Ambient lighting goes in the ceiling if you have a covered section, or on the posts for a warm glow. Accent lighting highlights architectural features like the pergola or the steps. A well-lit deck uses about 50 to 100 watts total for a 300-square-foot area, and the lights should be on a timer or a smart switch so you do not have to remember to turn them off.
If you are building a deck in 2026, run conduit from the house to the deck before the decking goes down. Burns Carpentry includes electrical planning in our detailed design phase. We can coordinate with your electrician to install outlets and lighting rough-ins during the framing stage. It costs about $300 to $600 to add this during construction versus $1,200 to $2,000 to retrofit later. Do not skip it.
Frequently Asked Questions
How much does a deck cost in Cary, Illinois in 2026?
Prices vary widely based on size, materials, and complexity. A basic 12x16 pressure-treated wood deck from Burns Carpentry's Essential Deck Package typically runs $8,000 to $12,000. A mid-range composite deck of the same size with basic railings is $15,000 to $22,000. A premium outdoor living package with a pergola, built-in seating, and lighting often exceeds $30,000.
How long does a deck building project take from start to finish?
Most projects take three to five weeks. The timeline starts with a free onsite consultation, then one to two weeks for design and permitting. Actual construction takes one to two weeks, depending on weather and complexity. Burns Carpentry handles all the permit applications with the Cary municipal offices, so you do not have to make any trips to city hall.
What is the best material for a deck in Illinois weather?
Composite decking is the top choice for Cary homeowners because it handles freeze-thaw cycles and humidity better than wood. It never needs staining or sealing, and it resists the mold and mildew that plague Wood Decks in our damp summers. Burns Carpentry's Preferred Composite Deck Package uses Trex or TimberTech materials that carry a 25-year warranty.
Do I need a permit for a deck in Cary?
Yes, any deck over 30 inches above grade or attached to the house requires a permit from the Village of Cary. Burns Carpentry handles the entire permit process for you. We submit the drawings, pay the fees, and schedule the inspections. This ensures your deck meets all local building codes and passes the final inspection.
If you are planning a deck building project in 2026 and want to avoid these common mistakes, call Burns Carpentry. We have been building decks in Cary and across McHenry County for over 15 years. We will walk your property, listen to your ideas, and give you a straight answer about what works. No pressure, just honest advice. Contact us today for a free estimate and start designing a deck you will actually use.
