How To Build Outdoor Stairs Up A Hill


Creating outdoor stairs on a hill is often necessary to reach different levels of your garden or backyard. Though it may seem like a daunting task, building outdoor stairs up a hill is actually quite simple.

Choose Your Materials

When designing your outdoor stairs up a hill, you will need to choose the material of the steps and handrails. You also need to determine how much space you have to work with, decide if you need multiple landings or a switchback, and make sure your design works within city codes and regulations.

These are some extra points:

  • Clear away all the rocks from your construction site so that they don’t get mixed in with tools or materials when building outdoors.

Plan Your Stair Design

When you design your outdoor stairs, think about the following:

  • How many steps do you want? Staircases come in all shapes and sizes, from the very simple to the incredibly elaborate. If you’re not sure how many steps are right for your space, consider what kind of view is at the top of your hill. Will it be a stunning vista or just a backyard full of toys? You can always add more steps later if needed!
  • How steep will they be? A straight staircase is typically easier to build than one that curves around corners or includes landings for resting spots along the way. Keep in mind that larger homes often have stairs with multiple turns because they need multiple levels throughout the house; smaller homes have fewer floors so their staircases might only take them up one level at a time.*How wide should they be? Your staircase should feel spacious enough so people don’t feel like they’re squeezing through tight quarters while climbing up or down.*How high should they be (including risers)? This will depend on what type of surface you want underfoot—wood planks would make sense for an outdoor deck but wouldn’t work with carpeted floors inside houses, for example.*What materials are best suited for an outdoor staircase? Wood can withstand weather conditions such as rain and snow better than other materials like concrete or stone — however some types may require additional maintenance over time.*What type of surface will support both walking traffic plus any weight from furniture being moved up/downstairs repeatedly during daily usage periods (e.g., dishwashing machines).

Excavate The Area

Excavate the area where the stairs will go. You will want to dig out an area that is at least 2 feet deep and wide enough to properly fit your stairs. In addition, you should ensure that there is enough room for people to walk up and down the stairs without bumping into each other or hitting their head on the top of a railing.

Build The Footing And Foundations

When building a staircase, you need to dig a hole for the footing and then install it. You’ll also need to build the foundations and level them. Finally, fill in the hole with dirt.

You can start by digging an area approximately 24″ x 24″. This size is ideal because it allows enough room for footers at each corner of your stairs; however, you can choose any dimensions that work for your project.

The depth depends on what type of material you’re using as foundation material (concrete will generally require deeper footing than wood). For example: If you use 4″ thick concrete blocks as your base material then dig down about 18″-24″ into the ground; if using 16″-18″ pressure treated timbers as foundation then dig down 8″-12″.

Build The Frame Of The Stairs

  • Use 2×6 pressure-treated lumber for the framing of your stairs. The recommended size is 6″ by 12″, but if you’re using treated lumber from a different supplier, check the specifications on their website to see if there are any differences in measurements.
  • Using a framing square, make sure that your boards are all placed at 90º angles to each other so that they form a perfect square when put together. If necessary, use a hammer and nails to hammer them into place or use clamps to hold them firmly as you nail them down.
  • Once you have constructed your frame, mark where each stair tread will be placed using masking tape or painter’s tape; these marks will help guide you when installing the railing later on.

Set The Landing Beam In Place

Next, place a level on the beam to make sure it is level. You want to be as accurate as possible when building your stairs so you can use a spirit level for accuracy if needed. If using a spirit level, hold it in line with the top of the stair stringers and let go once it hits the ground. It should remain at an equal distance from left and right end of your frame’s height. Repeat this process on each stringer until they are all lined up with each other on both sides of your frame.

Once you have checked that all four stringers are leveled out evenly across their length, place them back into position against where they were originally screwed together using brackets or screws if needed (depending on what kind of woodworking tools you have available). This time mark where exactly each stringer needs to sit according to their measurements: Measure away from either end by 2 inches along both sides – again making sure these measurements are consistent across all sides – then draw small tick marks along those distances to indicate how far from each side these measurements should be taken off from; then measure these distances back up towards where they need mounting points with tape measures or some other means until reaching those points themselves (where another set will be made).

Next step is putting together all four frames together at once before adding any extra pieces because this makes things easier down the road when needing access between two adjacent ones later down line during construction stages rather than having separate sections which would require removing screws etcetera every time one wanted access between two adjacent ones being built separately into separate sections instead.”

Install The Filler Boards

Once you’ve built your frame and attached the cable, it’s time to install the filler boards. These are typically plywood sheets or high-density fiberboard (HDF) that run across the entire width of your stairs. They’re usually 1/2″ thick and cut to fit snugly between each tread unit on its long side, but not necessarily on its short side—you’ll want to make sure they are slightly smaller than this so they can be easily attached with screws in every other hole.

To cut these pieces down to size, use an angle grinder fitted with a cutting wheel or a jig saw with metal cutting blades (if you’re using HDF). Once you have all of your pieces cut out, assemble them by attaching one end into each tread unit first (see image above). Then flip over each board so that only one end touches a stair tread while leaving space for attaching it securely at both ends later on.

Install The Stair Treads And Risers

You’re ready to start installing the treads and risers. Here are some tips to help you along the way:

  • Use the right tools for the job. If you don’t have access to a power miter saw, consider renting one from a local hardware store or home improvement center. It will make cutting these pieces much easier and safer for you than attempting it with just a handsaw or a circular saw (and possibly getting hurt in the process).
  • Measure twice, cut once! You want to make sure that your measurements are precise so that when you actually get started installing your stair treads and risers they will fit together perfectly without any gaps between them.
  • Cut accurately! The most important thing when cutting any material on site is accuracy—so always use calipers as an additional measure of precision when taking measurements so that all of your cuts end up being exactly what they need to be in order for everything else work out just fine later down line during installation phase.”

These instructions and materials list will help you build outdoor stairs up a hill.

To build outdoor stairs up a hill, you will need the following materials and tools:

  • A jigsaw.
  • A table saw.
  • A power drill with a circular saw attachment, or cordless drill/driver with a screwdriver bit for driving screws into hardwood boards.
  • Tape measure or carpenter’s square, pencil/pen, hammer and nails (for measuring and marking distances), level (to ensure your slope is equal on each side), tape measure (to check overall dimensions), chalk line (to draw straight lines), leveler foot tool to keep your table saw at 90 degrees to the ground as you make your cuts (optional).


Once you have all the materials and know what your plans are, framing outdoor stairs up a hill is actually not that difficult. It just takes some planning and a bit of work.

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