Cost to Retaining Wall Construction in Phoenix, AZ

$1,900–$11,400 in Phoenix

5% below the national average · 0.95x cost multiplier

In Phoenix, a retaining wall construction runs $1,900 to $11,400 on average — about 5% below what homeowners pay nationwide. The Mountain West market's labor costs account for most of the gap, with material pricing and local permitting fees adding to the spread. Use the cost table below to compare budget, mid-range, and premium options side by side.

Cost Breakdown in Phoenix

Line Item	Low	Mid	High
Cost per sq ft of wall face	$19	$57	$190
Materials	$760	$2,375	$7,600
Labor	$1,140	$3,325	$11,400
Permits	$190	$475	$1,425
Total	$2,090-5% vs. national avg	$6,175-5% vs. national avg	$22,325-5% vs. national avg

Budget

20 linear ft of timber or small concrete block retaining wall, under 3 ft tall, simple grading, no drainage system.

Mid-Range

40 linear ft of interlocking concrete block wall, 3-4 ft tall, gravel backfill and drainage pipe, basic landscaping restoration.

Premium

Engineered concrete or natural stone wall, 6+ ft tall, 60+ linear ft, full drainage system, geotextile fabric, structural engineering, tiered walls with steps.

Material Options

Material prices below are national averages; availability in Phoenix may shift costs slightly.

Material	Cost/Unit	Pros	Cons	Best For
Timber / Railroad Tie	$20-$35 per sq ft installed	Lowest installed cost, blends naturally into garden settings, easy for experienced DIYers to work with on small walls	Shortest lifespan at 10-20 years, treated wood chemicals are a concern near gardens, not suitable for walls over 4 ft	Low garden walls under 3 ft, budget-conscious projects, informal landscapingLowest installed cost, blends naturally into garden settings, easy for experienced DIYers to work with on small walls
Interlocking Concrete Block (Allan Block, Versa-Lok)	$25-$60 per sq ft installed	Engineered for retaining wall loads, modular and consistent, no mortar required, 50+ year lifespan, widely available	Can look utilitarian without capping or facing stone, requires proper base preparation and drainage to perform as designed	Most residential retaining walls 1-6 ft tall, cost-effective and durable middle groundEngineered for retaining wall loads, modular and consistent, no mortar required, 50+ year lifespan, widely available
Natural Stone (Fieldstone, Flagstone, Boulders)	$50-$100+ per sq ft installed	Highest aesthetic value, extremely durable, can last 100+ years when properly built, increases property value	Requires skilled masons, expensive material and labor, irregular shapes make precise construction harder	High-end landscaping, historic properties, walls that are a focal point of the yard designHighest aesthetic value, extremely durable, can last 100+ years when properly built, increases property value
Poured Concrete	$60-$120 per sq ft installed	Maximum structural strength, can be formed to any shape, smooth or textured finishes available, engineered for heavy loads	Requires forming, rebar, and skilled labor; more expensive than block; can crack without proper reinforcement and drainage	Tall walls over 6 ft, commercial or high-load applications, sites with extreme lateral soil pressureMaximum structural strength, can be formed to any shape, smooth or textured finishes available, engineered for heavy loads

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Back to national average for Retaining Wall Construction

Phoenix Estimate

Typical Range

$1,900–$11,400

vs. National Average

5% below national

Cost Multiplier

0.95x

Cost Per sq ft of wall face

$19–$190

Estimates apply Phoenix's 0.95x regional cost multiplier to national averages. Actual bids vary by contractor, project scope, and timing.

See national average costs →