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Countertop job costing: quoted vs. actual costs in SlabOS

Break a job into labor, material, equipment, fuel and overhead. Review actual versus quoted costs, override a figure and keep that override when the job recalculates.

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SlabOS workflow article · 36Documentation review · September 15, 2026

SlabOS helps countertop fabricators review quoted work alongside recorded material, labor, equipment and overhead costs. This guide explains the inputs behind operational job costing, including recorded versus planned time, and how that review relates to invoices and the accounting workflow.

Follow each cost back to its rate, quantity and time source.

SlabOS operational costing brings material, labor, equipment, fuel and overhead inputs into the job review. The guide distinguishes available actual time from scheduled and suggested durations. That lets an owner inspect whether a cost came from completed work or a planning estimate.

A useful actual-versus-quoted comparison must use consistent units and explain missing inputs. Crew size, hourly rate, per-job charges and equipment duration can each change the result. The cost model also needs to be kept separate from invoice balances and accounting-ledger profit, which answer different questions.

Inputs, outputs and an example to evaluate

Inputs: Labor rates, work records, equipment and vehicle costs, overhead and recurring expenses.

Outputs: Cost inputs that support job analysis and comparison with quoted amounts.

Present one synthetic job's material, labor and overhead assumptions alongside its quoted and actual totals.

Scope to understand

A modeled gross-margin figure is not proof that the accounting ledger has been reconciled. Missing costs and coverage must remain visible.

Public capability guides and product sources

Published by SlabOS. Documentation review: September 15, 2026. Basis: Public product and operating documentation. This article is a workflow explanation, not a newly performed product test.

Where this fits in the SlabOS workflow

Follow this capability into the connected quote-to-install journey:

Current product capabilities

The built-in analyst answers questions about the shop’s invoice balances, job status, sales pipeline and materials from its own records. The same public page describes reviewed vendor PDF, CSV and Excel imports for colors, thicknesses and prices. Read the AI CFO page →

The website widget uses the SlabOS drawing engine and the shop’s price list on the fabricator’s own website. It produces a draft quote with geometry and customer context; the shop chooses whether to show a price, a range or a review-first experience. Read the Website Quoting page →

Explore the capability in context

Continue into the related public explanations for inputs, outputs and scope.

Connected product pages and tools

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SEE THE WORKFLOW.IN MORE DETAIL.

A closer look at the decisions, details and handoffs that make the work happen.

Automatic travel costs on the quote

Set a regular service area and distance bands on the price list. Out-of-area sites receive an AUTO Travel line with a reason, while an existing trip charge prevents a duplicate.

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From slab layout to material pricing

See what the quote takes from the nest: priced by the slab, SlabOS bills every slab in the layout; priced by the square foot, it bills the drawing's sq ft. One kitchen at $65.00/sq ft, 3 slabs vs 2.

Read the clip: text and visual description

SlabOS - Follow the layout into the quote (SlabOS-Nesting-Layout-To-Quote-v2). All on-screen information, in order.

Does the layout change the price?
Same kitchen. Two ways to price the stone.

Step 4: Materials & Slabs.
3 slabs. Slab 1, Slab 2, Slab 3, holding pieces CT1.1, CT1.2, CT2 and CT3 with their splash strips.
Veined material — keep strips with parents.
126″ × 63″ slabs. Taj Mahal White.

Step 5: Summary & Pricing.
Rate: $65.00 per sq ft.
Price stone by: Price list setting. Changed to: Slab (whole quote).
By slab. The slabs are counted: 1, 2, 3.
Quantity = every slab in the layout.
$10,750.35
Quote line: 3 slabs Taj Mahal White @ $3,583.45/slab.

Price stone by: Square foot (whole quote).
By sq ft. The pieces go back to the drawing.
Quantity = sq ft from the drawing.
Counters 64.61 + splash 7.71 = 72.32 sq ft.
$4,700.80
Quote line: 72.32 sq ft Taj Mahal White @ $65.00/sq ft.

Step 4: Materials & Slabs. Auto Nest.
Tightest Fit — maximize yield. The same pieces re-nest onto 2 slabs.
Step 5: Summary & Pricing.
2 slabs.
By slab: $7,166.90 (was $10,750.35, 3 slabs).
By sq ft: $4,700.80, no change.
One fewer slab. Same 72.32 sq ft.

Price by the slab? The layout counts.
Price by the sq ft? The drawing counts.
Price list default. Change it per quote.

SlabOS. Follow the layout into the quote.
slabos.com. Book a demo.

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