HomeMath

Block Wall Cost Calculator

A cinder block wall costs about $15.11–$19.61 per square foot of wall installed, so a wall 20 ft long and 4 ft high is $1,209–$1,569, and a standard 8 × 8 × 16 in block costs $1–$3. Enter the wall's length and height, pick a plain block wall or a block retaining wall and add filled cores or stucco to see the installed range, the blocks to buy with their price and the price per square foot of a quote you have.

Units

Block wall: 8 × 8 × 16 in blocks set in mortar on a footing, cores not filled.

80 sq ft of wall: about $1,209–$1,569

Cost per sq ft of wall:
$15.11–$19.61
8 × 8 × 16 in blocks, with 10% waste:
99 blocks
The blocks alone at $1–$3 each:
$99–$297

US installed ranges from Homewyse (block wall) and Fixr (retaining walls), extras and block prices from Inch Calculator, read October 2026. Local quotes can sit outside them.

How HomeMath prices a block wall

HomeMath multiplies the wall's face, length × height, by a published installed price per square foot, each source and date named in the price table below. Each extra adds its price per square foot. The blocks are counted as the concrete block calculator counts them, 1.125 standard blocks per square foot by whole courses, with 10% waste, and priced at Inch Calculator's $1–$3 a block. In metric, HomeMath converts meters and centimeters exactly (1 in = 2.54 cm) and shows the result in cubic meters, liters and square meters. In metric the ranges are shown per square meter.

The published rules it uses: US customary units; metric conversion; concrete masonry unit sizes; foundation and wall prices. Their sources, and how HomeMath tests every result, are on the about page.

What do common block walls cost?

A mortared block wall at $15.11–$19.61 per sq ft, and with filled cores at $17.11–$27.61.

  • Garden wall 16 ft × 3 ft (48 sq ft)$725–$941 · filled $821–$1,325
  • Privacy wall 50 ft × 6 ft (300 sq ft)$4,533–$5,883 · filled $5,133–$8,283
  • Garage wall 24 ft × 8 ft (192 sq ft)$2,901–$3,765 · filled $3,285–$5,301
  • Property line wall 100 ft × 6 ft (600 sq ft)$9,066–$11,766 · filled $10,266–$16,566

How much does a block wall cost per square foot?

A mortared block wall is Homewyse's national range for May 2026, with the cores left empty. The two retaining walls are from Fixr's retaining wall cost page (updated January 31, 2025), labor included, and the extras from Inch Calculator (updated August 6, 2023).

Installed price per sq ft of wall face
WallWhat it isPer sq ftPer m²
Block wall8 × 8 × 16 in blocks set in mortar on a footing, cores not filled$15.11–$19.61$163–$211
Cinder block retaining wallthe cheaper block retaining wall$10–$15$108–$161
Reinforced block retaining wallhollow concrete blocks with steel reinforcement, for walls over 4 ft$30–$50$323–$538
Cores filled with rebar and concreteadded to the wall+$2–$8+$21.53–$86.11
Stucco or plaster finishadded to the wall+$6–$9+$64.58–$96.88

A block wall with its cores filled with rebar and concrete is $17.11–$27.61 per sq ft. The sources price different walls, so read what each one includes before comparing a quote.

What does a block wall cost for my size?

The installed range is the wall's face × the price per square foot:

Installed ranges by wall size
WallBlock wallCinder block retaining wallReinforced block retaining wall
10 × 3 ft (30 sq ft)$453–$588$300–$450$900–$1,500
20 × 4 ft (80 sq ft)$1,209–$1,569$800–$1,200$2,400–$4,000
30 × 4 ft (120 sq ft)$1,813–$2,353$1,200–$1,800$3,600–$6,000
50 × 6 ft (300 sq ft)$4,533–$5,883$3,000–$4,500$9,000–$15,000
100 × 6 ft (600 sq ft)$9,066–$11,766$6,000–$9,000$18,000–$30,000
100 × 8 ft (800 sq ft)$12,088–$15,688$8,000–$12,000$24,000–$40,000

By hand, for a wall 30 ft long and 4 ft high:

  1. Wall face: 30 × 4 = 120 sq ft.
  2. Installed: 120 × $15.11 = $1,813, and 120 × $19.61 = $2,353.
  3. Filled cores add 120 × $2–$8 = $240–$960.
  4. Blocks: 120 × 1.125 = 135, or 149 with 10% waste.

What does a concrete block cost?

Inch Calculator puts a standard 8 × 8 × 16 in block at $1–$3, a split-face block at $2.50–$3.50 and a retaining wall block at $6–$11. A wall takes 1.125 standard blocks per square foot, so the blocks are a small part of an installed price; mortar, fill, rebar, the footing and the mason's time make up the rest.

Standard blocks with 10% waste, and their price
WallBlocksAt $1–$3 each
10 × 3 ft42$42–$126
20 × 4 ft99$99–$297
30 × 4 ft149$149–$447
50 × 6 ft372$372–$1,116
100 × 6 ft743$743–$2,229
100 × 8 ft990$990–$2,970

How much does a cinder block retaining wall cost?

Fixr prices a cinder block retaining wall at $10–$15 per square foot of face and a reinforced concrete block wall, hollow blocks with steel for walls over 4 ft, at $30–$50. A wall 30 ft long and 4 ft high is $1,200–$1,800 and $3,600–$6,000. Over 4 ft, Fixr advises a structural engineer.

For a dry-stacked landscape wall you build yourself, count the blocks, caps and gravel in the retaining wall block calculator.

Is a block wall cheaper than a poured concrete wall?

Per square foot, a mortared block wall at $15.11–$19.61 costs less than a poured retaining wall at Concrete Network's $30–$60 or Fixr's $30–$40, and Fixr puts a segmental (interlocking) block wall at $15–$35. Concrete Network notes that block walls must be stuccoed or veneered to look finished, which adds $6–$9 per sq ft, and that a concrete wall needs no finish when its mix is colored. The concrete wall calculator gives a poured wall's concrete and its installed range, and the footing under a block wall.

How do I compare a block wall quote that gives only a total?

Divide a quote's total by the wall's face to compare it with the ranges; the calculator does this in the quote check field. For a 200 sq ft wall:

Totals and their price per sq ft, for 200 sq ft
Quote totalPer sq ft
$2,000$10
$3,000$15
$4,000$20
$6,000$30
$9,000$45

Ask each mason to list the footing, rebar, core fill, cap, drainage and finish, so quotes compare like for like.

Frequently asked questions

How much does a cinder block wall cost?
$15.11–$19.61 per square foot of wall installed for a mortared block wall, by Homewyse (May 2026), so a 20 ft wall 4 ft high (80 sq ft) is $1,209–$1,569. Filling the cores with rebar and concrete adds $2–$8 per sq ft and stucco $6–$9, by Inch Calculator.
How much does a concrete block cost?
About $1–$3 for a standard 8 × 8 × 16 in block, $2.50–$3.50 for a split-face block and $6–$11 for a retaining wall block, by Inch Calculator (updated August 6, 2023). Store prices change by region and season, so check your local yard; the block calculator prices a wall at your own price per block.
How much does a cinder block retaining wall cost?
$10–$15 per square foot of face for a cinder block retaining wall and $30–$50 for a reinforced concrete block wall, by Fixr (updated January 31, 2025), labor included. A wall 20 ft long and 4 ft high is $800–$1,200 and $2,400–$4,000. Fixr advises a structural engineer for a wall over 4 ft.
How do I calculate the cost of a block wall?
Multiply the wall's length × height for its area in square feet, then by the installed price per square foot. At $15.11 to $19.61, 80 sq ft is $1,209–$1,569. For materials only, count the blocks (1.125 per sq ft) and multiply by the block price.
How many blocks are in a block wall, and what do they cost?
1.125 standard blocks per square foot of wall: the 20 × 4 ft wall takes 99 with 10% waste, $99–$297 in blocks at $1–$3 each. Mortar, core fill, rebar, the footing and labor come on top.
Why is a block retaining wall priced differently from a block wall?
The sources price different walls. Homewyse's block wall is set in mortar with empty cores; Fixr's reinforced block retaining wall, at $30–$50 per sq ft, holds steel to resist the soil behind it, and its cinder block wall, at $10–$15, is the cheaper block option. Ask what a quote includes: footing, drainage, steel, core fill and finish.
Is a block wall cheaper than a poured concrete wall?
Often per square foot: Fixr puts a poured retaining wall at $30–$40 per sq ft and Concrete Network a basic one at $30–$60, against $15.11–$19.61 for a mortared block wall. Concrete Network notes a block wall usually needs stucco or veneer to look finished, which adds $6–$9 per sq ft.
What does a block wall cost per square meter?
About $163–$211 per square meter for a mortared block wall, Homewyse's US range per square foot converted (1 m² is about 10.76 sq ft). It is a US price in dollars. Switch the calculator to metric to enter meters.
What else goes into a block wall quote?
The footing under the wall, rebar and core fill, mortar, a cap, drainage and backfill behind a retaining wall, the finish, permits, and hauling away the dug soil. Ask for them as separate lines, and size the footing's concrete in the concrete wall calculator.

More concrete and gravel calculators