How to Build Stone Steps on a Slope

Build stunning stone steps on a slope with our expert DIY guide.

Great landscaping with stone steps and path
Photo: RiverNorthPhotography / E+ / Getty Images
Great landscaping with stone steps and path
Photo: RiverNorthPhotography / E+ / Getty Images
SKILL LEVEL
Intermediate
COMPLETION TIME
8 hours
COST
$500-$1,000
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What you'll need:
TOOLS
  • Shovel
  • Wheelbarrow
  • Tape measure
  • Level
  • Chalk line or string
SUPPLIES
  • Stone steps or pavers
  • Gravel or crushed stone
  • Sand
  • Landscape fabric
  • Landscape edging or border stones (optional)

Building stone steps on a slope can be a rewarding and visually appealing project that enhances the beauty and functionality of your landscape. Whether you want to create a pathway through a hilly garden or improve accessibility on your property, stone steps can add charm and character to your outdoor space. In this guide, we'll take you through the process of how to build stone steps on a slope, from preparation to completion.

Prepping to Build Stone Steps on a Slope

When you’re planning your stone step project, you’ll need to consider two main factors—building permits and taking proper measurements. Depending on your local regulations, you may need to obtain permits for constructing stone steps. Check with your local building department to ensure compliance with any necessary codes or permits.

Before you apply for any building permits, it’s helpful to start by measuring the slope's dimensions and assessing the desired length and width of your steps. Consider the height of each step and how many steps you'll need to build to achieve a comfortable and safe ascent. When installing stone steps on a slope, you need to understand the slope's gradient to achieve a comfortable and safe ascent. The slope's angle will impact the design and construction of the steps.

These measurements will give you a better idea of the project scope when you apply for a permit and will make it easier to plan the project in general.

You will also want to think critically about your project budget, the cost of stone steps will be one of your biggest expenses, but hopefully, you already have some of the other tools and supplies on hand. Do some research on different types of stone steps, like bluestone, travertine, flagstone, or sintered stone.

  1. Excavation and Foundation Preparation

    Once you’re ready to start your stone step project, you’ll need to properly prepare your working area. To do so, you’ll generally follow the following steps. 

    • Clear the area: Remove any vegetation, rocks, or debris from the slope where you plan to construct the stone steps.

    • Mark the path: Outline the path of the steps using wooden stakes and string or chalk line. This will help you visualize the layout and guide the excavation process.

    • Excavate the trench: Dig a trench for the steps, ensuring that it follows the marked path. The trench should be deep enough to accommodate the base material and the thickness of the stone steps.

    • Add base material: Fill the trench with a layer of gravel or crushed stone approximately four to six inches deep. Use a hand tamper or plate compactor to compact the base material firmly.

  2. Installing the Stone Steps

    A professional measuring stone steps
    Photo: kharoll Mendoza / Adobe Stock

    Once you complete the excavation and foundation preparation process, you can move on to installing the stone steps.

    • Lay landscape fabric: To prevent weed growth and maintain stability, lay landscape fabric over the compacted base material.

    • Place the first step: Position the first stone step at the bottom of the slope, ensuring it is level both side to side and front to back. Use a level and a rubber mallet or hammer to adjust the stone as needed.

    • Level and stabilize: As you proceed with laying each stepping stone, ensure that it is level and stable. Backfill with the additional base material and compact it beneath each step for added support. This is extra important when designing a stone path on a slope since it can be more dangerous to walk on than flat ground. 

    • Adhere steps: If you're using mortar-set steps, apply landscape adhesive or mortar between the steps to secure them in place. Follow the manufacturer's instructions for the best results.

  3. Finishing Touches and Safety Measures

    One optional step after building stone steps on a slope is to add landscape edging. You can install landscape edging or border stones on the sides of the steps to create a clean and defined edge. This will also help retain the base material and prevent erosion.

    If the area is prone to water runoff, you should also consider adding a drainage pipe behind the steps to redirect water and prevent erosion.

    Lastly, if there are gaps between the steps, fill them with sand or crushed stone, which will enhance stability and prevent tripping hazards.

DIY vs. Hiring a Pro

Building stone steps on a slope can be a moderately challenging project, and the decision to DIY or hire a professional brick paver near you will depend on your experience and comfort with such tasks. Here are some considerations:

DIY:

  • Pros: Cost-effective, hands-on experience, personal satisfaction.

  • Cons: Physical labor, time-consuming, potential mistakes.

Hiring a Pro:

  • Pros: Expertise, efficient completion, knowledge of local regulations.

  • Cons: Higher cost, less personal involvement. Professional installation of stone steps can cost as much as $2,200

If you decide to hire a professional, look for a reputable landscaper or stonemason experienced in building stone steps. 

Questions to Ask a Landscaper

Finding the right pro to build your stone steps can be challenging when there are so many local landscapers. But with the right questions at the ready, you can narrow down your options and choose the best landscaper for the job. Here are a few questions to ask a masonry contractor to get you started.

  • What experience do you have building stone steps—especially steps on a slope? Verify that your pro knows how to navigate not just any stone steps but ones on a slope. Ask for photos of previous work to see what past projects looked like. 

  • How much do you charge to build stone steps on a slope? Obtaining quotes from multiple landscapers can help you see what’s available in your area and give you a good idea of how much you might pay to build stone steps on a slope. 

  • Do you have insurance and licensing? If so, which types? Your pro should have workers’ compensation insurance and general liability insurance so that you’re not stuck paying for damages or injuries on your property. 

  • What services do you include or offer? Some landscaping companies may offer additional services that can be bundled for a lower price.

  • How do you handle disputes? Once the work is said and done, you’ll want to ensure that your pro won’t dip if you need dispute resolution. Make sure everything is outlined and on paper so that you know the fine print of your project’s scope in the off-chance things don’t go according to plan or hold up over time.

  • Do you hire contractors? Not every landscaping company is a full-service one. If subcontracting occurs, it’s important to know who those contractors are, their experience levels, their reputation, and which services they’ll fulfill.

Frequently Asked Questions

It is essential to have a stable and well-prepared foundation under stone steps. Often, a layer of gravel or crushed stone is placed as a base material. This provides a firm and level surface for the stone steps to rest upon. Additionally, landscape fabric is often laid down before adding the base material to prevent weed growth and help stabilize the foundation. Creating a solid base ensures the stone steps have adequate support, reduces the risk of settling, and enhances the overall durability and longevity of the steps.

Using sand under stepping stones can be beneficial in certain situations. Sand can help level the ground and provide stability for the stepping stones, especially if the ground is uneven. It also allows for minor adjustments during the installation process. However, sand may not be the best choice for all environments. In areas with high foot traffic or heavy rain, sand may wash away or become displaced, leading to an uneven surface. In such cases, a more stable base material like gravel or crushed stone is preferable. Consider your specific landscape conditions before deciding whether to use sand under stepping stones.

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