Footing Cost per Linear Foot: Materials vs Installed Quotes
Compare concrete footing cost per linear foot using dimensions, material estimates and itemized bids. Separate delivery, excavation, rebar, access and exclusions.
Concrete footing cost per linear foot is the quoted total divided by the footing's run length. Compare material-only and installed totals separately, using the same approved width, thickness, excavation scope, and reinforcement. A price per foot alone does not tell you what the contractor will provide.
In the worked example below, a 40 ft footing that is 16 in wide and 8 in thick has a $9.10 per linear ft delivered-material screen. An illustrative $2,400 installed bid is $60.00 per linear ft. Those are calculated examples, not local market averages or a recommended contractor price.
Use this page to separate material-only footing cost from installed footing quote cost before accepting a low or high bid. It is a quote-comparison workflow, not a structural design rule.
Use the Concrete Footing Calculator or the Concrete Footing Calculator Guide when you need cubic yards first. Use this page when the contractor bid is written by the linear foot or when two bids use different footing scope.
Quick answer
Calculate two footing numbers and keep them separate:
material cost per linear ft =
ready-mix material, delivery, tax, and fees
/ total footing run length
installed quote per linear ft =
contractor quote total
/ total footing run length
A 40 ft footing that is 16 in wide and 8 in deep needs about 1.45 yd3 with 10% waste. At $165 per yd3 plus a $125 delivery or short-load fee, the material check is about $364.01, or $9.10 per linear ft. If the contractor quote is $2,400, the installed quote check is $60.00 per linear ft.
The installed number can be much higher because it may include excavation, forming, rebar, inspection coordination, placement labor, access, cleanup, and business overhead. All dollar amounts on this page are illustrative USD inputs. Replace them with dated supplier and contractor quotes for the same project scope.
| 40 ft footing check | What it includes | Example total | Per linear ft |
|---|---|---|---|
| Material-only | Concrete, waste, delivery or short-load fee | $364.01 | $9.10 |
| Installed quote | Material plus excavation, forms, rebar, inspection, access, labor, cleanup, overhead | $2,400.00 | $60.00 |
Footing answer in one screen
Before comparing bids, write the same five numbers on the page:
| Field | Example | Why it matters |
|---|---|---|
| Total run length | 40 ft | The denominator for every linear-foot price. |
| Footing size | 16 in x 8 in | Changes cubic yards per foot and rebar scope. |
| Concrete with waste | 1.45 yd3 | Prevents under-ordering from a tight trench. |
| Material-only check | $9.10/ft | Shows the ready-mix baseline. |
| Installed quote check | $60.00/ft | Shows the real bid after field work and risk. |
If a quote only says "$ per foot" but does not list footing size, excavation, rebar, inspection responsibility, access method, and cleanup, it is not ready to compare. Run the material math, then send the total into the Concrete Cost Calculator and normalize the bid in the Concrete Quote Reviewer.
Footing cost inputs to separate
Do not compare footing bids until each quote uses the same run length, width, depth, reinforcement, and inspection assumptions.
| Input | Material-only estimate | Installed quote check |
|---|---|---|
| Total run length | Divides material cost by linear feet. | Sets excavation, form, and rebar length. |
| Width and depth | Controls cubic yards per foot. | May be driven by approved plans or code. |
| Waste factor | Adds order cushion. | Should reflect trench condition and over-dig risk. |
| Ready-mix or bags | Concrete purchase path. | Affects delivery, labor, and placement timing. |
| Excavation | Usually excluded from material math. | Can dominate the installed linear-foot price. |
| Forms or trench pour | Separate from concrete volume. | Changes labor, layout, and cleanup. |
| Rebar and dowels | Not part of the ready-mix price. | Should include bar size, spacing, laps, chairs, and inspection. |
| Inspection | Not a material cost. | Can control schedule and truck timing. |
| Access | Chute, pump, buggy, or wheelbarrow. | Poor reach can add equipment and crew time. |
For worked footing quantities, see Concrete Footing Calculation Examples. For reinforcement scope, use the Concrete Rebar Calculator Guide.
Formula for footing material cost per linear foot
For a continuous footing with width and depth in inches:
cubic yards = length ft x width in x depth in / 144 / 27
Add waste:
order quantity = cubic yards x (1 + waste percent / 100)
Estimate ready-mix material:
ready-mix material cost =
order quantity x price per yd3
+ delivery, short-load, fuel, tax, and access fees
Normalize by run length:
material cost per linear ft =
ready-mix material cost / total footing run length
For installed bids:
installed cost per linear ft =
contractor quote total / total footing run length
If the project includes footings plus slab, stem wall, piers, or grade beams, ask for those lines separately. One blended number can hide the real cost driver. Use 1.10 for 10% waste. Keep unrounded volume for quantity and cost calculations. Round only the displayed yardage and final money amounts, matching the footing calculator's quote comparison. Supplier order increments may differ. Do not add ready-mix or delivery again if an installed bid already includes it.
Example: 40 ft wall footing
Assume:
- Run length: 40 ft
- Width: 16 in
- Depth: 8 in
- Waste: 10%
- Ready-mix: $165 per yd3
- Delivery or short-load fee: $125
Concrete quantity:
40 x 16 x 8 / 144 / 27 = 1.316872... yd3
40 x 16 x 8 / 144 / 27 x 1.10 = 1.448559... yd3
Displayed yardage for this cost screen: 1.45 yd3
Material check:
(40 x 16 x 8 / 144 / 27 x 1.10) x $165 + $125 = $364.01
Unrounded material total / 40 ft = $9.10 per linear ft material-only
The yardage is displayed as 1.45 yd3; the price uses the unrounded 1.448559... yd3. Dollar amounts above are rounded only for display.
If the contractor quote is $2,400:
$2,400 / 40 ft = $60.00 per linear ft installed
Ask whether that installed price includes excavation, trench cleanup, forms, rebar, inspection timing, access equipment, cleanup, and permit handling.
Example: 84 ft garage perimeter footing
Assume:
- Total footing run: 84 ft
- Width: 18 in
- Depth: 10 in
- Waste: 10%
- Ready-mix: $165 per yd3
- Delivery or short-load fee: $125
Concrete quantity:
84 x 18 x 10 / 144 / 27 = 3.888888... yd3
84 x 18 x 10 / 144 / 27 x 1.10 = 4.277777... yd3
Displayed yardage for this cost screen: 4.28 yd3
Material check:
(84 x 18 x 10 / 144 / 27 x 1.10) x $165 + $125 = $830.83
Unrounded material total / 84 ft = $9.89 per linear ft material-only
The yardage is displayed as 4.28 yd3; the price uses the unrounded 4.277777... yd3. Dollar amounts above are rounded only for display.
If the installed quote is $5,000:
$5,000 / 84 ft = $59.52 per linear ft installed
That number may include layout, excavation, rebar, inspection coordination, concrete placement, cleanup, and contractor overhead. It is not just the ready-mix price.
Compare bids after pricing the exclusions
Suppose two bids cover the same 40 ft footing and approved concrete section. Bid A includes the four items below in its $2,400 total. Bid B starts at $1,900 but excludes those items. For this illustrative comparison, assume all four items are required and the contractor confirms the following add-on amounts. Both totals use the same tax and permit treatment; neither is a market quote.
| Cost line | Bid A | Bid B |
|---|---|---|
| Written base bid | $2,400 | $1,900 |
| Required spoil disposal | Included | $225 |
| Required reinforcement scope | Included | $180 |
| Required placement equipment | Included | $300 |
| Agreed waiting-time allowance | Included | $120 |
| Comparable planning total | $2,400 | $2,725 |
| Total divided by 40 ft | $60.00/ft | $68.13/ft |
Bid B's confirmed add-ons total $825. Its comparable planning total is $325 higher than Bid A, despite a $500 lower starting price. This is not a reason to assume every exclusion will apply: confirm each line and mark unknown amounts as pending instead of entering zero. Keep optional work separate.
For a capped allowance, ask for the included quantity, unit rate after the allowance, and approval process. For example, two extra hours at an illustrative $60/hour would add $120; it is not a flat fee that automatically applies to every delivery. Do not count an allowance and the same actual charge twice.
Use the Concrete Quote Reviewer to organize the written scope and missing line items. A contractor can turn the agreed inclusions, exclusions, and payment schedule into a Concrete Proposal Kit document.
What changes footing cost per linear foot
Footing cost changes faster than the concrete line suggests because field conditions and code timing matter.
| Cost driver | Why it changes the quote |
|---|---|
| Approved width and depth | Bigger footings increase concrete, excavation, and rebar. |
| Frost depth | Deeper work can add excavation, forms, and schedule risk. |
| Over-digging | Loose trench sides can increase concrete volume. |
| Rebar | Bar size, spacing, laps, chairs, dowels, and tying labor matter. |
| Inspection timing | Some footings cannot be poured until inspection passes. |
| Wet or soft trench | Cleanup, pumping water, or soil correction can add cost. |
| Pump or buggy access | Poor chute reach can add equipment and labor. |
| Forms vs trench pour | Forming can improve control but adds labor and material. |
Use the Concrete Pour Planner if access, crew count, or truck timing is uncertain.
Linear-foot quote red flags
| Red flag | What to ask |
|---|---|
| No width or depth | What footing dimensions are included? |
| "Per foot" with no excavation detail | Is excavation included, and to what depth? |
| Rebar not specified | What bar size, spacing, laps, chairs, and dowels are included? |
| Inspection responsibility unclear | Who schedules inspection and who pays for delays? |
| No access plan | Can the chute reach, or is pump, buggy, or wheelbarrow placement needed? |
| Wet trench exclusions hidden | What happens if the trench has water or loose soil? |
| Slab and footing blended | Can the slab, footing, stem wall, and apron be itemized? |
| Cleanup not mentioned | Who handles washout, debris, and site protection? |
If two quotes use different footing dimensions or reinforcement assumptions, normalize them in the Concrete Quote Reviewer before choosing the lower linear-foot number.
Footing quote checks
Use these shortcuts to decide what to check next:
| Situation | Next check |
|---|---|
| Installed price is much higher than the material-only estimate | Ask for excavation, rebar, inspection, access, cleanup, and overhead lines. |
| Quote is much cheaper than other bids | Confirm footing width, depth, rebar, dowels, forms, permits, and exclusions. |
| Quote includes footing plus slab or stem wall | Ask for a separate footing line before comparing $/ft. |
| Ready-mix order is under the supplier minimum | Check short-load or minimum-load fees before trusting the material-only number. |
| Truck chute cannot reach the trench | Add buggy, pump, wheelbarrow labor, or wait-time risk to the installed comparison. |
| Inspection must happen before the pour | Confirm who schedules it and who pays if the truck is delayed. |
| Trench is wet, loose, or over-dug | Add cleanup, water control, and extra concrete allowance. |
Confirm the order before dispatch
The NRMCA ordering guide asks purchasers to communicate project specifications, estimate quantity, and document responsibilities. Before dispatch, confirm the mix designation, yardage, inspection readiness, access, placement equipment, and delivery window with the supplier and contractor. Keep excavation depth separate from the thickness of the concrete section being priced.
Ask which party pays for a delayed inspection, blocked truck route, water in the trench, or additional cleanup load. Record any minimum load, short-load charge, fuel or environmental fee, tax, waiting time, pump service, washout, and cleanup beside the concrete quantity. If any line is already in the base bid, mark it included rather than adding it again.
Keep the supplier quote, approved dimensions, exclusions, and change-order approval together. A revised dimension or delivery plan needs a revised quantity and written price before the order is released.
Footing quote checklist
| Quote line | Bid A | Bid B | Notes |
|---|---|---|---|
| Total run length | Same linear feet and sections. | ||
| Width and depth | Approved dimensions, not rough guesses. | ||
| Concrete quantity | Cubic yards and waste factor. | ||
| Excavation | Digging, trench cleanup, spoil handling. | ||
| Forms or trench pour | Layout, form material, stakes, stripping. | ||
| Rebar and dowels | Size, spacing, laps, chairs, tying, inspection. | ||
| Access method | Chute, pump, buggy, or wheelbarrow. | ||
| Inspection and permits | Responsibility and delay handling. | ||
| Cleanup | Washout, debris, protection, exclusions. |
FAQ
How do I calculate footing cost per linear foot?
Divide the contractor quote by total footing run length. For a material-only check, divide ready-mix material, delivery, tax, and fees by total linear feet. Keep material-only and installed cost per linear foot separate.
Why is installed footing cost higher than concrete material cost?
Installed footing work can include excavation, trench cleanup, forms, rebar, dowels, chairs, inspection timing, pump or buggy access, permits, cleanup, labor, warranty, and contractor overhead.
Should footing quotes be priced by linear foot or cubic yard?
Use both. Cubic yards check concrete quantity. Linear feet check installed scope across excavation, forms, reinforcement, inspection, and access.
Does footing width change cost per linear foot?
Yes. Wider or deeper footings increase concrete volume per foot and often increase excavation, forms, rebar, and inspection complexity.
Is rebar included in footing cost per linear foot?
Only if the quote says so. Footing reinforcement should list bar size, spacing, laps, chairs, dowels, and inspection responsibility.
Can I use bags for footings?
Small isolated footings may be reasonable with bags. Continuous footing runs can require many bags and fast placement, so compare the bag count with ready-mix, access, inspection timing, and crew availability.
Sources and checks
Use these references as checks around the estimate, then confirm the final scope with local code, approved plans, and a qualified contractor or engineer:
| Source | What to use it for |
|---|---|
| NRMCA CIP 31 Ordering Ready Mixed Concrete | Confirm order quantity, delivery coordination, and jobsite responsibilities. |
| NRMCA CIP 8 Discrepancies in Yield | Understand why measured yield and ordered yield can differ. |
| NRMCA CIP 26 Jobsite Addition of Water | Check why adding water at the site can affect concrete quality. |
| QUIKRETE concrete calculator | Cross-check common bag and volume assumptions. |
| Sakrete calculators | Cross-check concrete volume and bag planning inputs. |
Next step
Calculate the footing cubic yards with the Concrete Footing Calculator, compare the material total in the Concrete Cost Calculator, then check the written scope with the Concrete Quote Reviewer. For footings, the cheapest linear-foot number is useful only after dimensions, rebar, inspection, and access are clear.
Quote planning next step
Turn this guide into a concrete buying check
Run the matching calculator, then compare ready-mix, bagged concrete, delivery fees, access needs, and quote gaps before you buy materials or approve a contractor number.