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Hardscaping

Retaining Wall Cost Calculator and Estimate

Estimate retaining wall cost per foot and total project costs by wall length, height, material, soil and slope, drainage, backfill, engineering, permits, and access before comparing hardscape bids.

Starter planning range $3,000 - $18,000 Per project; final pricing depends on project conditions.

At a glance

Typical planning range $3,000 - $18,000

Per project before contractor-specific scope and site conditions.

Main cost drivers Wall length, wall height, wall material, and soil, slope, and site condition

These inputs move the estimate before local labor, access, permits, and project conditions.

Best next step Compare bids against the same assumptions

Ask contractors to separate included work, allowances, exclusions, and change-order rules.

Interactive estimate

Estimate your project cost

Use this retaining wall cost estimate to plan wall length, wall height, cost per foot, timber-versus-block-versus-stone material choice, excavation, compacted base, drainage and geogrid, backfill, slope, surcharge loads, access, permits, engineering, and local hardscape labor.

Estimated range $3,000 - $18,000 Use this as a planning range, then compare contractor quotes against the same assumptions.
Project supplies to check View full supply checklist Product links may earn GetCosts.com a commission from qualifying purchases.

Project questions this estimate answers

Use these checkpoints to keep the estimate tied to the scope a contractor will actually price.

  • Retaining wall cost calculator

    Start with wall length, wall height, material, drainage, slope, access, and engineering needs before comparing hardscape bids.

  • Retaining wall cost estimate

    Use the estimate to separate timber, segmental block, poured concrete, stone, and engineered structural wall scopes before requesting contractor prices.

  • Retaining wall cost per foot

    Use per-foot pricing only after checking height, base prep, drainage stone, perforated pipe, geogrid, surcharge loads, and site access.

  • How much does a retaining wall cost?

    Compare short landscape walls, taller structural walls, drainage fixes, and terraced slope work separately so the price range matches the actual project.

  • Retaining wall drainage cost

    Confirm whether the bid includes gravel backfill, filter fabric, perforated pipe, outlets, geogrid, erosion control, and surface restoration.

Project supplies

Price-check related tools, parts, fixtures, filters, safety items, and materials before you buy or review a bid.

View full supply checklist

Cost drivers to review

  • Wall length
  • Wall height
  • Wall material
  • Soil, slope, and site condition
  • Drainage and backfill scope
  • Engineering, permits, and access

How this estimate should work

  1. Estimate retaining wall scope and cost per foot from wall length, wall height, material, site condition, drainage and backfill, and engineering or access needs.
  2. Apply timber-versus-block-versus-stone ranges so homeowners do not compare a short landscape timber wall against a segmental block, poured concrete, boulder, or engineered structural wall.
  3. Scale the planning range from a 60-linear-foot wall so shorter garden walls, longer slope walls, and terraced retaining wall bids are compared against the same length assumption.
  4. Separate excavation, compacted base, gravel backfill, perforated pipe, drainage and geogrid, soil reinforcement, erosion control, and surface restoration from the visible wall material price.
  5. Flag permit or engineering needs when wall height, property-line location, steep slopes, utilities, driveway loading, fences, patios, or surcharge loads make the wall more than a simple landscape border.
  6. Help homeowners compare hardscape bids against drainage fixes, grading, French drains, foundation repair, concrete patio, paver patio, and land-clearing scope before signing.

Cost examples

Lower-scope retaining wall $2,250 - $15,300

A planning example for smaller or simpler retaining wall work with easier access, fewer upgrades, and limited prep.

Typical retaining wall $3,000 - $18,000

A planning example around the starter range when wall length, wall height, and wall material are near the middle of the project.

Higher-scope retaining wall $3,600 - $24,300

A planning example for larger, upgraded, or harder-to-access retaining wall work with more site prep or coordination.

Retaining wall cost by wall height

Wall height Planning range
Under 2 feet $1,550 - $9,350
2 to 3 feet $2,350 - $14,000
3 to 4 feet $3,000 - $18,000
4 to 6 feet $4,550 - $27,400
Over 6 feet or terraced wall $6,600 - $39,600

Retaining wall cost by wall material

Wall material Planning range
Pressure-treated timber $2,150 - $13,000
Segmental concrete block $3,000 - $18,000
Poured concrete wall $3,850 - $23,000
Natural stone or boulder wall $4,850 - $29,200
Engineered structural wall $6,150 - $36,900

Retaining wall cost by wall length

Wall length Planning range
25 linear ft $1,250 - $7,500
50 linear ft $2,500 - $15,000
75 linear ft $3,750 - $22,500
100 linear ft $5,000 - $30,000
150 linear ft $7,500 - $45,000

Common questions

How much does retaining wall cost?

A typical retaining wall planning range is $3,000 - $18,000 per project. Final pricing depends on wall length, wall height, wall material, soil, slope, and site condition, local labor rates, access, permits, and project conditions.

What changes a retaining wall estimate the most?

The biggest changes usually come from project scope, especially wall length, wall height, wall material, soil, slope, and site condition. Contractor availability, code requirements, site access, disposal needs, and regional cost pressure can also move the final quote.

How should I compare retaining wall bids?

Ask each contractor to price the same scope, materials, timeline, cleanup, warranty, and permit assumptions. Then compare what is included, what is excluded, and how each quote handles surprises.

What should I enter in a retaining wall cost calculator?

A useful retaining wall cost calculator should account for wall length, wall height, wall material, soil and slope conditions, drainage and backfill scope, geogrid or reinforcement, engineering, permits, utilities, access, and local hardscape labor. Those inputs keep a garden wall estimate separate from a structural wall bid.

How much does a retaining wall cost per foot?

For the default 60-linear-foot retaining wall, GetCosts.com uses a $3,000 - $18,000 planning range, or roughly $50 - $300 per linear foot before contractor-specific site conditions. Wall height, material, excavation, compacted base, gravel backfill, perforated pipe, geogrid, surcharge loads, permits, and access can move bids above or below that range.

What should a retaining wall cost estimate include?

A retaining wall cost estimate should separate excavation, wall block or timber, base stone, compaction, gravel backfill, perforated drain pipe, filter fabric, geogrid, caps, adhesive, outlet drains, erosion control, surface restoration, permits, engineering, cleanup, and warranty assumptions.

When does a retaining wall need drainage, geogrid, or engineering?

Drainage becomes important when water can build up behind the wall, clay soil holds moisture, or runoff needs a controlled outlet. Geogrid or engineering is more likely for taller walls, steep slopes, surcharge loads from driveways or patios, property-line constraints, utilities, terraced walls, or permit and inspection requirements.

Browse related cost guides when this project overlaps with another trade or quote.

Compare another planning range, bid worksheet, or supply checklist before you call contractors.

Compare contractor bids

Often included

  • Labor and standard materials for retaining wall.
  • Basic site preparation, cleanup, and disposal assumptions.
  • Standard contractor scheduling and project coordination.

May cost extra

  • Changes related to wall length, wall height, wall material, or soil, slope, and site condition.
  • Permits, code upgrades, access issues, repairs, haul-off, or special-order materials.
  • Scope changes discovered after the contractor inspects the site.

Confirm before hiring

  • Whether the bid is fixed-price, allowance-based, or subject to site conditions.
  • What is excluded, what could trigger a change order, and how surprises are priced.
  • Warranty terms, payment schedule, start date, and cleanup responsibilities.

When to request quotes

Use the estimate after you know wall length, wall height, wall material, and soil, slope, and site condition well enough to compare the same scope across contractors.

Good time to ask

  • You can describe wall length, wall height, wall material, and soil, slope, and site condition without guessing.
  • You have photos, measurements, or notes that show the current retaining wall scope.
  • You are ready to ask at least two contractors for the same included work, exclusions, warranty, and change-order rules.

Wait until you know more

  • The project scope may change after an inspection, repair decision, insurance review, or permit requirement.
  • You are still deciding between retaining wall options that would create different material, labor, or access needs.

Before you request quotes

Use these questions to describe your project clearly and compare contractor bids against the same assumptions.

Quote comparison worksheet
  • What is included in a retaining wall quote, and what would be billed separately?
  • How does wall length change labor, materials, disposal, or timeline?
  • How does wall height change labor, materials, disposal, or timeline?
  • How does wall material change labor, materials, disposal, or timeline?
  • How does soil, slope, and site condition change labor, materials, disposal, or timeline?
  • Which assumptions should stay the same when comparing retaining wall bids?