Most homeowners focus on decking boards and stain colors—but it’s the railing height that can make or break your project during inspection. At Heartland Decks, we’ve seen how overlooking a few inches can cause delays, safety concerns, or even failed permits. That’s why we guide Kansas City homeowners through railing requirements from the start, making sure every deck we build is secure, stylish, and fully up to code.
When Do You Need a Railing on Your Deck?
Local Code: The 30-Inch Rule
Here in the Kansas City market, the building code is clear. If your deck is 30 inches or more above ground, you must install a railing. If it’s under 30 inches, you don’t have to—but you still can if you want to.
Many of our clients with low cedar decks choose to add railings for aesthetic reasons or peace of mind. But if your deck is elevated 30 inches or higher, railings aren’t optional—they’re required.
What is the Required Deck Railing Height?
1. Standard Deck Height Requirements
Once you cross the 30-inch threshold, your deck railing height must be at least 36 inches tall. This measurement is from the deck surface to the top of the handrail. This standard applies for most single- and two-story residential decks in our area.
We install this standard height railing regularly on cedar decks of all sizes. It offers a clean look, safety, and meets code across the board.
2. Two Stories and Higher: Upgraded Railing
If you’re building a deck above two stories, you’ll need a taller system. Code requires a commercial-grade 42-inch railing for any decks this high. We offer both 36-inch and 42-inch options so your deck stays safe and compliant no matter how tall it is.
What Are Your Deck Railing Style Options?
Every homeowner has different style preferences, and that applies to railing just as much as the deck itself. Here are a few options we commonly install:
- Aluminum Railing (Standard): Clean, modern, and low maintenance. This is our most popular option and works well with both wood and composite decks.
- Wood Railing: A classic look that pairs beautifully with cedar decks. We build these to match your deck exactly.
- Cable Railing: A contemporary favorite. But keep in mind:
- Horizontal cable railings look sleek, but if you’ve got kids, they can act like a ladder.
- That’s why we often recommend vertical cable railing for families with small children.
- Some municipalities in the Kansas City area have even banned horizontal cable railings because of safety concerns.
4. Glass Railing: Want an unobstructed view? We’ve installed a few of these, and they always impress.
Things to Consider When Choosing Your Railing
Not Just About Looks—Safety Matters Too
Picking the right railing for your cedar deck isn’t just about personal style. It’s also about who will use the deck and how. Here are a few important considerations:
- Children and Safety: Kids love to climb. If you’re set on a cable system, go vertically to eliminate the “ladder” effect.
- Local Codes: Some Kansas City municipalities are stricter than others, especially with horizontal cable railing. We’ll help you check what’s allowed in your area.
- Deck Height: This directly affects the required railing height. Over 30 inches? You need 36 inches. Over two stories? You’re looking at 42 inches.
- Material Preference: Want something low maintenance? Go aluminum. Want warmth and a natural feel? Wood might be your best bet.
In Summary
At the end of the day, deck railing height isn’t just a box to check—it’s a critical detail that protects your family and keeps your deck compliant with local codes. Whether you need a 36-inch residential railing or a 42-inch commercial-grade option, we’ve got you covered.
We also offer a wide range of styles—aluminum, wood, cable, or even glass—so your cedar deck can look exactly the way you want it to while staying safe. Handrail selection is ultimately your preference, but we’re here to make sure it fits your lifestyle and passes inspection.
If you’re ready to build or upgrade your deck, contact us today. We’ll make sure every detail—especially the railing—is handled with care.
