Retaining Wall Cost Calculator

Estimate installed cost for a landscape block retaining wall from length, visible height, and local prices. Count blocks and gravel instead

Your wall

Change length and height. The total updates as you type.

Length (ft)

Visible height (ft)

Measure from finished grade to the top of the highest regular wall block. Do not include the cap or buried courses.

Wall block

Installed total

$1,733

$28.88 per sq ft

$773 mat · $960 labor

Materials

$773

Labor

$960

What this retaining wall cost calculator covers

Wall blocks, optional caps, base gravel, drainage stone, waste, and installation labor for the wall you entered. Not a contractor bid.

A short landscape block wall usually sits near $20 to $50 per sq ft installed, or about $60 to $150 per linear foot for a 2 to 4 ft garden wall.

If the live number is far outside $20 to $50 per sq ft, check the inputs. The default 3 ft sample is $28.88 per sq ft. Taller walls, tight access, and high-cost ZIP codes sit higher. Look at block price, labor rate, and whether caps are on before you treat a wild number as the job.
Labor is priced on the wall face, not per block. Crews quote per square foot of visible face or per linear foot of run. This page uses those two bases so you can match a quote.
Replace the defaults before you lock a budget. ZIP defaults scale a US planning baseline. Type supplier and installer prices. Excavation haul-off, drain pipe, geogrid, permits, and engineering sit on top of this total.

Check the default 20 x 3 ft wall

Reset puts back a 20 ft by 3 ft visible wall, one buried course, 6×16 blocks, cap on, 10% waste, and national-average prices. The live total should match this.

1. Wall face
20 ft x 3 ft = 60 sq ft of visible face. Buried courses do not add face area.
2. Blocks to buy
6 in blocks: 6 visible courses plus 1 buried. 15 blocks per course × 7 = 105 wall blocks, then 116 after 10% waste. Caps: 20, then 22 after waste.
3. Materials
116 × $4.50 = $522 wall blocks. 22 × $4 = $88 caps. 0.74 cu yd base gravel at $45 = $33.30. 2.59 cu yd drainage stone at $50 = $129.50. Materials = $772.80.
4. Labor and installed total
60 sq ft × $16 / sq ft = $960 labor. Installed cost = $772.80 + $960 = $1,732.80, shown as $1,733, or $28.88 per sq ft and $86.64 per linear foot.

Check the live number against these bands

The calculator is the better answer for your wall. These bands only tell you whether that result is in the right neighborhood.

Cost item	Planning range	Lower when	Higher when
Installed cost per sq ft	$20 to $50 / sq ft	Under 3 ft, easy access, common 6×16 blocks	Taller walls, tight access, extra corners, high-cost labor
Installed cost per linear ft	$60 to $150 / linear ft for a 2 to 4 ft wall	Lower walls, because each foot of run has less face	Taller walls, extra buried courses, higher labor markets
Landscape wall block	$3.50 to $7.00 / block	Basic gray block bought by the pallet nearby	Small orders, larger 8×18 units, delivery, shortages
Installation labor	$12 to $25 / sq ft or $35 to $80 / linear ft	Open site, straight run, larger job	Minimum charges, steps, corners, quotes tied to height

When not to use this number

This is a US-dollar planning total for a segmental landscape block wall. Switch pages when the job is different.

Ordinary CMU or cinder block wall. Garage, fence, or foundation walls use mortar, optional grout, and masonry labor. Use the concrete block wall cost calculator.
Timber, poured concrete, or natural stone. Those systems do not use this block, cap, base, and drainage takeoff.
Walls taller than 4 ft, or any wall that needs a stamp. Most US codes treat 4 ft as the permit and engineering line. The page still shows a planning total. It does not design geogrid, soil, or setback.
Quotes outside the United States. ZIP defaults and dollar prices will not match an Australia, UK, New Zealand, or Canada contractor quote.

How the installed cost is built

Materials are the wall blocks, caps, base gravel, and drainage stone for the wall you entered. Labor is then added on the visible face or the wall run.

Wall face and block count: face = length × visible height; courses = ceil(visible height / block height) + buried courses
Base gravel and drainage stone: base = length × base width × base depth; drainage = length × total block height × drainage depth
Installed total: installed = materials + max(rate labor, minimum labor charge)

Where the numbers come from

Planning defaults reviewed September 2026

Material takeoff. Block, cap, base, and drainage quantities follow segmental wall geometry aligned with CMHA guidance.https://www.cmha.org/resource/srw-man-002/
Price defaults. Block, gravel, and labor defaults are 2026 US national planning averages. Enter a ZIP to scale them, or type local quote prices. Not live bids.

Frequently asked questions

How much does a retaining wall cost per square foot?

A landscape block retaining wall is usually $20 to $50 per square foot installed. The default 20 x 3 ft sample here is $28.88 per sq ft at national-average prices. Taller walls and high-cost ZIP codes sit higher. Use the live result, then replace the defaults with local quotes.

How much does a retaining wall cost per foot?

Per linear foot is the installed total divided by wall length. A 2 to 4 ft garden wall is often $60 to $150 per linear foot. The default 3 ft sample is $86.64. A taller wall costs more per foot of run because each foot carries more face.

What does this retaining wall cost calculator include?

Wall blocks, optional cap blocks, compacted base gravel, drainage stone, waste, and installation labor. Not included: excavation haul-off, drain pipe, filter fabric, geogrid, permits, engineering, or a contractor bid.

Is this the same as the retaining wall block calculator?

No. That page answers how many wall blocks, cap blocks, and cubic yards of gravel to buy. This page takes the same list and adds installation labor.

Can I use the concrete block wall cost calculator for a retaining wall?

No. That page prices a CMU or cinder block wall body with mortar and optional grout. A landscape retaining wall needs base gravel, drainage stone, cap blocks, and different labor.

What if the wall is taller than 4 feet?

You still get a planning total and a warning. Most US jurisdictions require a permit and engineered design above about 4 ft. Do not treat the number as approval to build.

Does this work for timber or poured concrete retaining walls?

No. Timber, poured concrete, and natural stone use different material lists. This page is for segmental landscape block walls.

Copy or print from the estimate above. Replace default prices with supplier and installer numbers before you treat this as a budget cap. For walls over 4 ft, ask about permits and engineering first.

Need the material list without labor? Use the retaining wall block calculator. For a standard CMU wall body, use the concrete block wall cost calculator, or browse all calculators.