SACRAMENTO EXCAVATION PLANNING / CSLB #1117562

Excavation Volume Calculator

Q: Does the excavation estimate include backfill and compaction?

Use the calculator backfill option as a planning input. A written proposal should separately identify imported material, installed quantity, lift thickness, moisture conditioning, compaction standard, testing or inspection, and final grading.

Q: When is a Sacramento grading permit required?

Sacramento current design manual says a grading permit is generally required at 50 cubic yards or more, for cuts or fills two vertical feet or more, or when drainage pathways may be affected. Exemptions and related permits depend on the address and full project scope, so confirm with the City.

Estimate cubic yards and a planning budget, then turn the result into a safer scope for access, haul-off, backfill, utilities, permits, and written bids.

Use the Excavation Calculator

START HERE

Planning estimate, not a bid

The tool helps organize measurements and assumptions. Final quantities, safety systems, disposal, permits, engineering, and pricing require project-specific review.

MEASURE BEFORE PRICING

Calculate excavation volume and a planning range

Enter a full street address and the measured length, width, and average depth. The result is a planning estimate—not a site survey, engineered quantity, safety plan, permit decision, or contractor proposal.

FROM FEET TO CUBIC YARDS

The calculator starts with simple volume math

For a rectangular area, multiply length × width × average depth in feet, then divide cubic feet by 27. Example: 20 × 10 × 3 = 600 cubic feet, or about 22.2 cubic yards before soil expansion, over-excavation, quantity, haul-off, or backfill adjustments.

cubic feet = 1 cubic yard

TRANSPARENT PLANNING METHOD

How the excavation planning estimate is assembled

The calculator separates measured in-place volume from planning allowance, loose haul volume, selected services, and the displayed uncertainty range. These are budgeting inputs—not a bid or field-verified quantity.

Current calculator inputs

Base excavation

$95 per planning cubic yard
Applied after the 5% planning allowance and selected soil/access factors.

Haul-off

$55 per loose cubic yard
Uses a 15% loose-volume allowance when haul-off is selected.

Backfill

$65 per planning cubic yard
Added only when backfill/compaction is selected.

Mobilization

$250 planning input
Truck planning capacity is 10 loose cubic yards.

Cost factors: Soil: Standard ×1.00 · Clay ×1.10 · Rocky ×1.35 / Access: Easy ×1.00 · Standard ×1.10 · Difficult ×1.25 / Planning allowance: 5% / Loose-haul allowance: 15% / Displayed range: ±15%.

Four steps from measurement to planning range

Measure in-place volume

Length × width × average depth × quantity ÷ 27.

Add planning allowance

In-place cubic yards × 1.05.

Price site conditions

Planning volume × $95 × soil factor × access factor.

Add options and range

Add selected haul-off, backfill, and $250 mobilization; display 85%–115%.

EXAMPLE

20 × 10 × 3 ft · standard soil · easy access

With haul-off selected and backfill excluded: 22.22 cu yd in place → 23.33 planning cu yd → $2,216.67 excavation + $1,475.83 haul-off + $250 mobilization = $3,942.50 estimated total. Displayed planning range: $3,351.13–$4,533.88.

Inputs and example response verified against the live calculator on July 21, 2026. A site review can change dimensions, soil classification, access, swell, disposal, backfill, equipment, safety systems, permits, engineering, and price.

WHAT THE NUMBER DOES NOT DECIDE

Four decisions turn volume into a buildable scope

Cubic yards are only the starting quantity. Written bids should use the same boundaries, grades, material assumptions, access limits, utility information, and disposal plan.

Cut & finished grade

Record existing elevations, average depth, slope, over-excavation, drainage, finished elevation, and who verifies layout.

Soil & haul-off

State soil assumptions, expansion or swell, reuse area, stockpile limits, truck access, disposal responsibility, and load basis.

Backfill & compaction

Name imported material, installed thickness, lift sequence, moisture, testing or inspection, and final grading responsibility.

Utilities & protection

Coordinate 811 responses, private lines, structures, trees, traffic, edge protection, water, access, and the required protective system.

Backhoe working within a measured excavation area with site-access constraints

THE SITE CHANGES THE TAKEOFF

Measure access and constraints with the excavation

A 22-cubic-yard cut on an open lot is not the same operation as the same volume behind a narrow gate. Measure the tightest access width, turning space, overhead clearance, travel path, staging area, haul route, slope, nearby foundations, trees, fences, drainage, and surface protection.

The public utility ticket is only part of the utility picture. USA North 811 explains that member-owned facilities are marked, while private irrigation, landscape lighting, detached-structure feeds, and similar private lines may not be. Put responsibility for locating and protecting private facilities in the scope.

QUANTITY AND COST DRIVERS

Why two excavation estimates differ

Sloped or irregular areas need several depth measurements. A single shallow point can understate the cut, while a single deep point can overstate it.

Excavated soil can occupy more volume after it is loosened. The proposal should state the assumed soil condition and how haul capacity was estimated.

Gate width, turning room, overhead lines, soft ground, surface protection, loading position, and hand-work zones affect equipment choice and production.

Separate in-place volume from loose haul volume. Name truck or container assumptions, loading, disposal destination or fees, and whether clean soil can stay on site.

Imported fill, drain rock, aggregate base, bedding, topsoil, moisture conditioning, compaction, testing, and waste each require their own quantities.

Buried debris, undocumented utilities, groundwater, unstable soil, contaminated material, roots, foundations, and unexpected obstructions need a written change process.

Worker handling gravel for excavation backfill and aggregate base planning

Before digging: submit and close the 811 loop

USA North 811 says to pre-mark the work area, give at least two working days' notice, and wait until every notified utility member has positively responded. The excavating person or company needs its own ticket.

Private utilities still need a plan

Public locators generally do not mark privately owned irrigation, lighting, barbecue gas, septic, or feeds to detached structures. Identify private-location responsibility before excavation.

Sacramento grading thresholds

The City's current Onsite Design Manual says a grading permit is generally required at 50 cubic yards or more, for cuts or fills two vertical feet or more, or when a drainage pathway may be affected. Exemptions and other permits are project-specific, so confirm the address and scope.

Permit and inspection path

Check the City's current required permits and inspection guidance for the work supported by the excavation. Foundation, utility, drainage, retaining, pool, demolition, encroachment, and other scopes can follow different paths.

Trench protection and competent-person review

OSHA's trenching guidance calls excavation hazardous. Protective systems are generally required at five feet or more unless an exception applies, and a competent person must evaluate conditions. Protective-system selection is not a calculator output.

Access, water, loads, and changing conditions

Plan safe entry and exit, spoil and equipment setback, adjacent-structure support, water control, traffic, atmospheric hazards where applicable, daily inspections, and reinspection after rain or other changing conditions. Never treat estimated depth as permission to enter an excavation.

COMPARE THE SAME EXCAVATION SCOPE

Four checks before accepting an excavation proposal

Verify the contractor's current status with the California Contractors State License Board. CSLB says California home-improvement projects over $500 require a written contract; review its contract guidance and put the measured limits, quantities, operations, materials, payment schedule, permit responsibility, start and completion dates, written change orders, cleanup, license number, and warranties in writing. Then compare the same excavation scope—not just a total price.

Quantity basis

List in-place cubic yards, assumed swell, over-excavation, quantity multiplier, haul volume, imported material, and measurement responsibility.

Included operations

Name layout, protection, mobilization, excavation, hand work, loading, haul-off, disposal, backfill, compaction, grading, cleanup, and testing.

Safety & approvals

Assign 811, private locating, competent-person duties, protective systems, permits, inspections, engineering, traffic, water, and adjacent-structure protection.

Unknowns & closeout

Define exclusions, unit rates, change authorization, hidden conditions, disposal documentation, final grades, inspection records, photos, and warranties.

REAL PEOPLE / CALCULATOR REVIEW

Who prepared and reviewed this excavation calculator guide?

The homeowner explanation and contractor review are identified separately so you can see who organized the formula, official sources, scope decisions, safety limits, and next steps.

Emin, Chief Designer at US Construction and Remodeling Corp.

Prepared by Emin

Editorial preparation · Chief Designer
Emin organized the calculator inputs, transparent pricing method, official-source links, homeowner questions, bid checklist, related tools, and visual reading flow. View the company team.

Umit Sahin, project oversight and technical reviewer at US Construction and Remodeling Corp.

Technically reviewed by Umit Sahin

Contractor review · Project oversight
Umit reviewed the volume formula, pricing inputs, soil and access assumptions, haul-off and backfill selections, utility-ticket sequence, grading and permit limits, excavation safety boundaries, proposal comparison, and closeout guidance.

EXCAVATION PLANNING QUESTIONS

Excavation volume calculator FAQ

For a rectangular area measured in feet, multiply length by width by average depth to get cubic feet, then divide by 27. Irregular shapes, slopes, multiple areas, over-excavation, and changing depths require a more detailed takeoff.

The calculator uses a full street address and ZIP code as part of its project estimate workflow. The address does not replace a site visit, utility ticket, survey, permit check, soil assessment, or engineered quantity.

Not always. Soil can expand after excavation, and the loose volume can differ from the in-place cut. Moisture, soil type, loading method, truck capacity, legal load limits, and disposal rules also affect the number of trips.

Use the calculator's backfill option as a planning input. A written proposal should separately identify imported material, installed quantity, lift thickness, moisture conditioning, compaction standard, testing or inspection, and final grading.

Sacramento's current design manual says a grading permit is generally required at 50 cubic yards or more, for cuts or fills two vertical feet or more, or when drainage pathways may be affected. Exemptions and related permits depend on the address and full project scope, so confirm with the City.

USA North 811 says to contact 811 no matter how deep the planned excavation is. Pre-mark the area, provide the required notice, and wait for a positive response from every notified member before digging. Private lines require separate planning.

No. Protective systems depend on excavation geometry, soil, water, loads, adjacent structures, changing conditions, and competent-person or engineering requirements. The calculator is not a safety-system design tool and does not authorize trench entry.

It applies a 5% planning allowance to measured in-place volume, then uses a $95-per-planning-cubic-yard excavation input with the selected soil and access multipliers. If selected, it adds haul-off at $55 per loose cubic yard using a 15% swell allowance and backfill at $65 per planning cubic yard, plus $250 mobilization. The displayed range is 85%–115% of the estimate. These are current planning inputs, not a bid.

Construction worker reviewing excavation conditions and safety requirements

TURN THE RESULT INTO A WRITTEN SCOPE

Request a Sacramento excavation assessment

Use the calculator result or share the address, intended work, dimensions, access limits, known utilities, photos, and permit status. We will organize the next practical review step.

SITE REVIEW

What helps us review the project?

Project address and intended outcome
Length, width, average depth, and photos
Access width, equipment, and staging limits
Known utilities, soil, haul-off, and backfill needs
Permit, drawing, and schedule status

Request a written excavation review

Add your contact details and project address. If you used the calculator, choose “Request a written assessment” under the result to copy the address here.

Prefer to talk?
Call (916) 234-6696

US Construction & Remodeling Corp.
Licensed California contractor #1117562 serving Sacramento-area residential and commercial projects.

Useful next steps
Plan a trench
Contact USA North 811
Check City permit requirements

The calculator is a planning estimate, not a bid. Field conditions, permits, engineering, utilities, safety systems, and written scope can change the final price.