Rock and stone landscaping: what to know

What the job involves, what changes the price, and what to ask a pro.

What rock and stone landscaping is

Rock and stone landscaping places boulders, flagstone, river rock, gravel and walls into beds, paths and slopes with a prepared base and fabric, adding structure, controlling erosion and cutting down on mowing. People hire it to hold back a slope, make a path, define a bed or replace turf that is hard to keep alive.

Signs you need it

  • Water washes soil off a slope, leaving gullies, exposed roots or bare patches after rain
  • A path across the lawn is worn down and muddy, and people keep cutting across the grass
  • Beds need structure, and the plants keep sprawling without a defined edge
  • A bare, hot or shady area is hard to plant, and rock would look better and need less work
  • Mowing around beds, edges and slopes takes too much time and the grass is hard to reach

What the pro does

  • The crew marks the layout and locates buried lines, then plans the drainage the stone will sit on
  • The base is dug and filled with compacted gravel, and landscape fabric is laid where it helps keep soil and stone apart
  • Boulders are set with equipment or by hand, with the largest stones placed first and set at the right depth
  • Flagstone, river rock or gravel is laid in place, with joints filled or set to the design
  • Edges are finished, loose stone is swept or raked, and the crew explains any settling and upkeep to expect

What changes the price

Every job is different, so we do not publish prices. These are the things that move the quote up or down.

  • Total area of rock, stone or gravel, and the number of beds and paths
  • Stone type, size and weight, since large boulders need equipment to place
  • Base depth and the amount of excavation and gravel needed
  • Slope and the retaining or edging needed to hold the stone in place
  • Access for delivery trucks, skid steers and the crew moving heavy stone
  • Removal of old turf, plants or hardscape before the stone goes in
  • Whether drainage is added under the stone or along the slope

What a written quote should spell out

  • The stone types, sizes and quantities, and the source of each one
  • The base depth and material, and whether fabric is used
  • The layout and the placement method for boulders and flagstone
  • Any retaining, edging or drainage work needed to hold the stone
  • Removal and disposal of old material, and how the site will be cleaned up
  • The warranty on workmanship and what the customer must maintain

Questions to ask before you hire

  • What base do you build under the stone, and how deep is it?
  • Do you use landscape fabric, and where does it go?
  • How do you set boulders so they do not shift or sink?
  • What drainage do you add for the slope or the paths?
  • Will the stone wash, shift or sink over time, and how do you prevent it?
  • How do you handle the delivery and placement of heavy stone?
  • What maintenance will the stone need each season?

Red flags

  • They lay flagstone or gravel on bare soil with no base or compaction
  • They set boulders on top of the soil without burying them to the right depth
  • They lay fabric over the whole slope without securing it, so it shifts and tears
  • They do not check for buried lines or drainage before digging
  • They say the stone will never need any upkeep or never shift

What you can do yourself

A homeowner can lay small gravel areas, set a few stepping stones, or place small rocks in beds on their own, on a compacted base. Call a pro for boulders that need equipment to move, for walls or retaining structures, for slope stabilization, or for any large stone job that needs a compacted base. Lift stone with your legs and a helper, and never try to move a boulder that is too heavy for you.

Licenses and permits

Rock and stone landscaping is commonly licensed contractor work when it includes walls, retaining structures, grading or drainage; simple gravel beds and mulch are commonly not licensed. Check with your state or local licensing agency and your permit office about any rules for walls or grading on your property.

Rock and stone landscaping questions

Do I need a permit for a stone retaining wall?

Some areas require a permit for retaining walls, especially above a certain height or near property lines. Check with your local permit office before the work starts, and ask the contractor whether they handle the permit.

Why do rocks shift over time?

Usually the base was too thin or not compacted, or the drainage behind the stone was poor. Ask the crew how they built the base and what drainage they added, since those decide how well the stone holds.

Is landscape fabric necessary?

It can help keep soil and stone apart and slow weeds, but it can also trap water or fail if it is not secured. Ask the crew whether they use it, where it goes and how they hold it in place.

About this guide

This national guide is written and checked by infinibell. Rules and conditions differ by place, so local pros are credited on guides for the cities they serve, not on national ones.

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