What Installing a Retaining Wall Costs in Nashville

A 120 square foot segmental block retaining wall in Nashville (40 feet long, 3 feet high) works out to roughly $6,100 to $7,900 under the assumptions below, or $51 to $66 per square foot of wall face. The range comes from federal wage data multiplied by a 2.0 to 3.0 burden factor, plus an assumed material allowance. It is a calculation, not a quote.

Key points

• Nashville landscaping and groundskeeping workers earned a median $18.23 per hour in 2025, which is $0.59 (3.1%) below the national median of $18.82.
• A 3-person crew with a supervisor costs $74.36 per crew-hour in wages alone, before any overhead is added.
• The 120 square foot example needs 24 crew-hours and $1,784.64 in wages, but the homeowner-facing total is $6,079 to $7,864 once burden and materials are added.
• A budget of $10,000 buys roughly 154 to 202 square feet of wall face under these assumptions, depending on the burden multiplier.
• BLS producer prices for paving mixtures and blocks rose 7.0% over twelve months to August 2026, but that adds only about $151 to the example wall if the block line moved in step.

What assumptions drive this estimate?

Six inputs drive the answer, and only the wages are measured. Everything else below is an assumption you can argue with, and the later tables show how far each one moves the total.

Input	Value used	Status
Crew	2 landscaping workers at $18.23/hr plus 1 supervisor at $37.90/hr	Wages from BLS; crew makeup is an assumption
Labor productivity	0.6 person-hours per square foot of wall face	Assumption (excavation, base, block, drainage, backfill)
Burden multiplier	2.0, 2.5 and 3.0 times the wage	Assumption
Block, base stone, drain pipe, geogrid	$18 per square foot of face	Assumption, no markup added
Equipment rental and delivery	$350 per job	Assumption
Wall type	Segmental (interlocking) block, up to about 4 feet	Assumption

The wage series used here is SOC 37-3011, Landscaping and Groundskeeping Workers. Wall crews are sometimes classified as masons or construction laborers, which BLS tracks separately and this page does not use. If your contractor’s crew is made up of masons, expect higher wages than the ones below.

What do Nashville landscaping workers earn?

Nashville landscaping and groundskeeping workers earned a median of $18.23 per hour in 2025, according to the BLS OEWS series for the Nashville metro (series OEUM003498000000037301108, survey year 2025, pulled from the BLS public API on 2026-10-15). These are wages paid to workers, not prices billed to customers.

Area	25th percentile	Median	75th percentile	Mean	Employed
Nashville, TN	$17.40	$18.23	$22.23	$19.43	6,270
Tennessee statewide	$16.75	$17.80	$20.98	$18.56	18,250
United States	$17.40	$18.82	$22.52	$20.33	952,640

The same source lists a median of $37.90 per hour for first-line supervisors of construction trades in Nashville. That is the crew-lead wage used below.

How far is Nashville from the national wage?

Nashville sits slightly below the national figure at every point except the 25th percentile, where the two are equal.

Measure	Nashville	United States	Gap in dollars	Gap in percent
25th percentile	$17.40	$17.40	$0.00	0.0%
Median	$18.23	$18.82	-$0.59	-3.1%
75th percentile	$22.23	$22.52	-$0.29	-1.3%
Mean	$19.43	$20.33	-$0.90	-4.4%

Against Tennessee as a whole, Nashville’s median is $0.43 higher (+2.4%). So Nashville is a little pricier than the rest of the state and a little cheaper than the national picture. The BLS Occupational Outlook Handbook profile covers duties and national pay for this occupation if you want the wider context.

On a 120 square foot wall, the two laborers log 48 hours. At $0.59 less per hour that is $28.32 of wages, or $70.80 once a 2.5 burden multiplier is applied. A Nashville job is therefore about $71 cheaper than the same job at the national median laborer wage, about 1.0% of the total. The supervisor wage is held at the Nashville figure in both cases because no national supervisor figure was supplied, so the real gap is somewhat larger, but it stays small.

Why is a wage not the price on your quote?

A worker’s wage is what the worker is paid. A quote has to cover payroll taxes, workers’ compensation, liability insurance, trucks and fuel, tools, office time, warranty reserve and profit. Small residential contractors are commonly assumed to land between 2 and 3 times the wage. That is a working assumption, not a measured figure, and this page does not claim any contractor actually uses it.

Under that assumption, a worker paid $18.23 per hour effectively costs the customer $36.46 to $54.69 per hour of work. The multiplier is not a markup on top of a fair price. It is the gap between pay and what it takes to keep a crew on the road.

How is a 120 square foot wall built up, line by line?

Start with the blended wage. Two laborers at $18.23 and one supervisor at $37.90 cost:

• Crew wage per hour: 2 × $18.23 + $37.90 = $74.36 per crew-hour
• Blended wage per person-hour: $74.36 ÷ 3 = $24.79

A wall 40 feet long and 3 feet high has 120 square feet of face. At 0.6 person-hours per square foot that is 72 person-hours, or 24 crew-hours for three people (three 8-hour days).

Step	Arithmetic	2.0 burden	2.5 burden	3.0 burden
Wall face	40 ft × 3 ft	120 sq ft	120 sq ft	120 sq ft
Crew-hours	120 × 0.6 ÷ 3	24	24	24
Wages paid	24 × $74.36	$1,784.64	$1,784.64	$1,784.64
Burdened labor	wages × multiplier	$3,569.28	$4,461.60	$5,353.92
Materials	120 × $18	$2,160.00	$2,160.00	$2,160.00
Equipment and delivery	lump allowance	$350.00	$350.00	$350.00
Total		$6,079.28	$6,971.60	$7,863.92
Per square foot	total ÷ 120	$50.66	$58.10	$65.53

Wages are 22.7% to 29.4% of the total. The multiplier alone moves the answer by $1,784.64 between the 2.0 and 3.0 columns, which is exactly the wage bill. Materials carry no extra markup here, so a contractor who marks up block purchases would land higher.

What does a wall cost at every size from 40 to 480 square feet?

Find your wall face area (length times height) in the first column. The cost per square foot labor-plus-materials is $47.74, $55.18 or $62.62 depending on burden, plus the $350 lump.

Example wall	Face area	At 2.0 burden	At 2.5 burden	At 3.0 burden
20 ft × 2 ft	40 sq ft	$2,260	$2,557	$2,855
40 ft × 2 ft	80 sq ft	$4,170	$4,764	$5,359
40 ft × 3 ft	120 sq ft	$6,079	$6,972	$7,864
50 ft × 4 ft	200 sq ft	$9,899	$11,386	$12,873
75 ft × 4 ft	300 sq ft	$14,673	$16,904	$19,135
120 ft × 4 ft	480 sq ft	$23,267	$26,836	$30,406

Small walls cost more per square foot because the $350 lump is spread over less wall: the 40 square foot wall is $63.93 per square foot at 2.5 burden, the 480 square foot wall $55.91. The table assumes the same 0.6 person-hours per square foot at every size. Real jobs get slower as walls get taller, which is why the table stops at 4 feet of height.

How much do wage level and burden move the answer?

Two axes change the 120 square foot result: how much the workers are paid and how much overhead the contractor carries. The grid below holds the supervisor at $37.90 and varies the two laborers’ wage.

Laborer wage basis	Laborer rate	Wages for 72 person-hours	At 2.0 burden	At 2.5 burden	At 3.0 burden
Nashville 25th percentile	$17.40	$1,744.80	$5,999.60	$6,872.00	$7,744.40
Nashville median	$18.23	$1,784.64	$6,079.28	$6,971.60	$7,863.92
Nashville 75th percentile	$22.23	$1,976.64	$6,463.28	$7,451.60	$8,439.92
US median	$18.82	$1,812.96	$6,135.92	$7,042.40	$7,948.88

Totals include $2,510 for materials and equipment. Moving from the Nashville 25th to 75th percentile wage changes the 2.5-burden total by $579.60 (8.4%). Moving from 2.0 to 3.0 burden changes it by about $1,745 to $1,977 (roughly 29% to 31%). Overhead assumptions matter about three times more than which wage percentile applies.

How much wall does my budget buy?

Reverse the calculation: subtract the $350 lump, then divide by the per-square-foot figure for your burden assumption.

Budget	At 2.0 burden	At 2.5 burden	At 3.0 burden
$5,000	97 sq ft	84 sq ft	74 sq ft
$10,000	202 sq ft	175 sq ft	154 sq ft
$15,000	307 sq ft	265 sq ft	234 sq ft
$20,000	412 sq ft	356 sq ft	314 sq ft

Example: $10,000 at 2.5 burden is ($10,000 − $350) ÷ $55.18 = 175 square feet, which is about a 44 foot wall at 4 feet high. Treat a figure above the 2.0 column as an unusually efficient job and a figure below the 3.0 column as an unusually expensive one.

Did material prices change in the last year?

Yes, upward. The BLS producer price index data shows two relevant series (index levels with 1982 = 100, which are points rather than dollars):

Series	August 2025	August 2026	Change over twelve months
Paving mixtures and blocks (WPU1394)	404.152	432.516	+7.0%
Concrete products (WPU133)	393.084	409.479	+4.2%

These are producer-level indexes, not what your landscape supply yard charges. As a scenario only, apply the percentages to the $2,160 block-and-base allowance. A 7.0% rise adds $151.20 and a 4.2% rise adds $90.72. Against the 2.5-burden total of $6,971.60, that is 2.2% and 1.3%. The wall materials index is not a reason to expect a dramatic jump.

What common beliefs about retaining wall costs are wrong?

“The crew’s hourly wage is roughly what I’ll pay.” The wage bill for the 120 square foot wall is $1,784.64. The modeled total is $6,079 to $7,864, which is 3.4 to 4.4 times higher. Wages are only 23% to 29% of the bill.

“Nashville is a lot cheaper than the national average.” The median laborer wage is 3.1% lower, which is about $71 on a $6,972 wall (1.0%). A quote that is 20% under what you expect is not explained by the metro.

“Price per linear foot tells me if a bid is fair.” At 2.5 burden, a 40 foot wall costs $119.11 per linear foot at 2 feet high, $174.29 at 3 feet and $229.47 at 4 feet. A per-foot number without a height is meaningless.

“Rising material indexes are why my quote jumped.” A 7.0% block price rise adds about $151 to the example. A shift in the contractor’s overhead assumption from 2.0 to 3.0 adds $1,784.64. Ask which one moved.

When is this estimate wrong?

The estimate fails in predictable ways, and the productivity assumption is the most sensitive:

Hours per sq ft of face	Person-hours (120 sq ft)	Total at 2.5 burden
0.4 (open site, easy digging)	48	$5,484
0.6 (this page’s assumption)	72	$6,972
1.0 (rock, slope, hand carrying)	120	$9,946

Other concrete exceptions:

• Walls over about 4 feet. Many jurisdictions require an engineered design above that height, and the build needs more base, geogrid and compaction work. Per-square-foot cost rises faster than area.
• Material allowance off by $4. At $14 or $22 per square foot instead of $18, the 120 square foot total shifts by $480.
• Natural stone or poured concrete. This page models segmental block only. Stone and poured walls have different labor and material profiles.
• Mason crews. If the crew is skilled masons rather than landscaping workers, the wage inputs are too low.

What can this calculation not see?

The arithmetic covers crew time, overhead and a materials allowance. It leaves out several things that routinely change a real bid:

• Permits and engineering. Fees and stamped drawings depend on the jurisdiction and wall height.
• Disposal and spoil haul-off. Excavated soil has to go somewhere, and trucking costs vary by site.
• Code upgrades. Guard rails above a drop, drainage requirements or setback fixes can add scope.
• Access. A backyard reachable only by a narrow gate means hand carrying block and no machine access, which is what the 1.0 hours row represents.
• Slope and soil. Rock, high water, fill or clay change both digging time and drainage design.
• Season. Wet or frozen ground slows work, and demand peaks in spring.
• Emergency call-outs. A failing wall after heavy rain often carries a rush premium that a planned job does not.

None of this was inspected, surveyed or quoted by this site. We do not visit properties or collect contractor bids. The figures above are arithmetic on public federal data.

How do I read a real quote against these numbers?

Take the quote total, subtract materials and equipment, then divide the remainder by the wage bill implied by the crew-hours. That gives the burden multiplier the quote embeds. A fair itemised quote should show these lines separately:

1. Excavation and base preparation (depth and compacted base stone)
2. Wall block or stone, with unit type and quantity
3. Geogrid or reinforcement, if the wall height needs it
4. Drainage pipe, clean gravel backfill and fabric
5. Spoil removal and disposal
6. Permit and engineering fees
7. Labor, with crew size and days

The single question that exposes a padded bid: “How many people for how many days, and what is the materials subtotal?” Take a $14,000 quote for 120 square feet with $2,500 of materials and equipment. The remaining $11,500 divided by the $1,784.64 wage bill is 6.4 times, against the 2.0 to 3.0 assumed. A $9,000 quote on the same wall gives ($9,000 − $2,510) ÷ $1,784.64 = 3.6 times, just over the range and worth a conversation about site conditions. An answer that cannot name crew size and days is itself the red flag.

What should I check before signing?

• Confirm the wall height and length are written in the contract, since height drives price more than length.
• Ask whether the quote includes permit, engineering and disposal, or lists them as exclusions.
• Check that drainage (pipe, gravel backfill) is itemised. It is the part buried walls fail without.
• Get the crew size, expected days and the materials subtotal in writing.
• Compare the implied multiplier to the 2.0 to 3.0 range used here. Outside it, ask why.
• Ask who pulls the permit and who carries liability insurance and workers’ compensation for the crew.
• Check the warranty length and what it excludes, particularly water damage and settling.
• Get at least two quotes written with the same height, length and block type so the totals can be compared.

This page is a way to test a quote, not replace one. The wage figures come from BLS, the multiplier, hours and materials are assumptions, and a site visit by a contractor will always know more about your ground than this arithmetic can.

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