Cost to Retaining Wall Construction in Boise, ID

$2,100–$12,600 in Boise

5% above the national average · 1.05x cost multiplier

Expect to pay $2,100–$12,600 for a retaining wall construction in Boise, about 5% above the national benchmark. The Mountain West region's contractor market and material costs account for most of this difference. The detailed breakdown below shows how budget, mid-range, and premium projects compare at Boise prices.

Cost Breakdown in Boise

Line Item	Low	Mid	High
Cost per sq ft of wall face	$21	$63	$210
Materials	$840	$2,625	$8,400
Labor	$1,260	$3,675	$12,600
Permits	$210	$525	$1,575
Total	$2,310+5% vs. national avg	$6,825+5% vs. national avg	$24,675+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 Boise 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

Other Projects in Boise

Composite Deck Building

Full Kitchen Remodel

Central AC Installation

Back to national average for Retaining Wall Construction

Boise Estimate

Typical Range

$2,100–$12,600

vs. National Average

5% above national

Cost Multiplier

1.05x

Cost Per sq ft of wall face

$21–$210

Estimates apply Boise's 1.05x regional cost multiplier to national averages. Actual bids vary by contractor, project scope, and timing.

See national average costs →