INTERIORS & FINISH CLUSTER · CFOS TRADE OPERATING SYSTEM

WHY TILE & STONE CONTRACTORS LOSE MARGIN WITHOUT KNOWING IT.

QUICK ANSWER

Tile & Stone margin is lost to three specific things: the inherited slab, the slab on the boat, and the flood test nobody billed. All three are measurable, and all three are invisible without job costing that reads against the estimate.

Tile and stone contractors at $1M to $5M net 5.5 percent on the SPM 48-trade dataset, rising to 8 percent by $25M to $50M; the CFOS target at $1M to $5M is 11.5 percent. The distance between the trade average and the CFOS target comes out of operations in this trade, never out of pricing. It lives in the three mechanisms below, each of which moves margin without appearing as a failure on any single job. Tile is rigid; the substrate's sins (out-of-flat, wet, cracked) become the tile contractor's callbacks unless substrate acceptance, prep pricing, and test records are on paper before setting. Request the FF/FL report and the moisture readings at handoff; they exist for exactly this.

BY JOSH LUEBKERPublished 2026-08-06Updated 2026-08-06
THE THREE BIG LEAKS

THE MATH BEHIND THE MISSING CASH.

LEAK 01

The Inherited Slab

Tile is rigid; the substrate's sins (out-of-flat, wet, cracked) become the tile contractor's callbacks unless substrate acceptance, prep pricing, and test records are on paper before setting. Request the FF/FL report and the moisture readings at handoff; they exist for exactly this.

LEAK 02

The Slab on the Boat

Deposits out months early, breakage and dye-lot risk in transit, no warehouse restock behind a cracked book-match: the material float is the trade's silent bank loan, and stored-materials terms plus priced attrition allowances are the repayment plan.

LEAK 03

The Flood Test Nobody Billed

Wet areas fail at the membrane, and the bill lands on whoever lacks the test record. A witnessed, photographed, billed flood test before setting is cheap insurance against the most expensive tear-out in the interiors family. (cfos-job-profitability-system) ---

HOW CFOS FIXES IT

WHAT CHANGES IN THE FIRST 60 DAYS.

The substrate inheritance (flat and dry, or it's your crack)
The material deposit float (slabs on a boat)
Waste is a pattern decision (layout math)
Wet-area liability (the shower is a waterproofing job wearing tile)
Last-trade retainage, hard-finish edition
TILE & STONE BENCHMARKS
Metric$1M to $5M$5M to $10M$10M to $25M
Gross margin, industry average22%23%24%
Gross margin, CFOS target24.5%25.5%26.5%
Net profit, industry average8%10%12%
Net profit, CFOS target11.5%13.5%15.5%
Overhead, industry average14%13%12%
Overhead, CFOS target13%12%11%

Industry figures are Tile & Stone contractors' AVERAGE for each revenue band, not a floor. The CFOS net profit target is set at 10 percent before taxes or 3.5 points better than your trade's average at your revenue, whichever is higher, and the gross margin target is set at whatever gross margin produces that net profit once your overhead is paid, and never below your trade's own average. Gross minus overhead equals net on every column, so the rows tie out. The gross margin and overhead figures for this trade are derived from the nearest comparable trade in the same dataset, and were not measured directly.

HOW THE NET PROFIT FIGURES ARE BUILT

Gross margin and overhead come from CFMA, Jones Maresca and SPM's own trade data, because those are the figures those sources report by trade and size. Net profit is calculated from them as gross margin minus overhead, so the three rows tie. That makes it an operating profit figure: what is left before interest, other income and expense, and the tax planning choices owners make, such as bonuses, depreciation methods and retirement contributions.

Surveys report net income before taxes after those items, so a reported net can run below the figure here. At the typical contractor the difference is small: CFMA's 2025 medians are 7.1 percent before interest and taxes and 6.7 percent net income before taxes. It grows with size. Against the separate measured net profit dataset, the calculated net runs 0.8 points higher at $1M to $5M, 2.2 points at $5M to $10M and 3.5 points at $10M to $25M, because the gross margin and overhead rows change faster with size than reported net profit does. The bands above the $10M to $25M band are published at runoncfos.com as a modeled extension of the same curves. They have not been reconciled against the licensed CFMA Benchmarker, and the calculated net there runs well above survey medians, so read them as a model and not as a survey result.

Last 12 months revenueMonthly feeOne-time onboarding
Up to $1M$1,900 to $2,900$1,000
$1M to $3.5M$2,600 to $3,900$1,500
$3.5M to $6.5M$3,800 to $5,700$3,000
$6.5M to $9.5M$5,100 to $7,100$4,500
$9.5M to $12.5M$6,100 to $8,500$6,000
$12.5M to $15.5M$7,400 to $11,000$7,500
$15.5M to $18.5M$9,400 to $13,500$9,000
$18.5M+Quoted individuallyQuoted individually

The onboarding fee covers migrating your books back to the start of your last taxable year and getting you fully operational in 60 days. It's billed once, with your first invoice. It's the same for all three tiers. Your first month is prorated, and your monthly engagement starts on the first of the first full month.

Range reflects the three tiers below. Which one you're in depends on how much of the work you want off your desk. No payroll. No hidden line items. The onboarding fee is right here in the table.

Core

You stop guessing.

You get the CFO work. Job costing built against the way you estimate, a 13 week cash forecast, monthly WIP, and a meeting every month that ends in decisions and never in a report.

Your bookkeeper still does the books.

Executive

You stop touching the books.

Everything in Core, and we run the bookkeeping and the controllership as well. Your office stops answering coding questions and stops chasing a reconciliation on the last day of the month.

We do the books. No payroll.

Strategic

Every job shows its margin while it's still running.

Everything in Executive, plus the job costing and WIP platform set up, loaded with your cost codes, and managed for you every month. You never have to learn it.

We do the books, the job costing, and the software. No payroll.

What's included
COMMON QUESTIONS

FREQUENTLY ASKED.

Tile and stone contractors at $1M to $5M net about 5.5 percent on the SPM 48-trade benchmark dataset, rising to 8 percent by $25M to $50M; the CFOS target at $1M to $5M is 11.5 percent. The trade's leaks are inherited substrate problems, unpriced pattern waste, material-float holding costs, and retainage that outweighs the margin. Every net profit figure here is stated before taxes, the same basis CFMA reports on, so the two are directly comparable.
Whoever accepted the substrate. Rigid finishes transmit the slab's flaws, so document acceptance before setting: request the FF/FL flatness report and moisture readings at handoff, price prep as its own scope, and never set past a failed condition without a signed directive.
As a financed position: deposits on imported slabs and special-order tile tie up cash for months with breakage and dye-lot risk attached. Negotiate deposit reimbursement and stored-materials billing, price attrition allowances on fragile and book-matched material, and put the float's holding cost in the bid.
By pattern, not by rule of thumb: straight-lay field tile, diagonal lays, large formats, and book-matched stone each cut differently. Track ordered-to-installed quantities by pattern class on every job so the waste factor comes from your history instead of a guess.
The membrane, not the tile, holds the liability: shower failures mean tear-out, re-waterproofing, re-tiling, and the damage below. Flood-test every pan and wet area, witnessed and photographed, billed as its own milestone before setting, and define the membrane scope boundary in writing wherever a waterproofing trade is also present.
Sulphur Prairie Management, operating as The Construction CFO, publishes the 48-trade benchmark dataset these numbers come from. SPM's deepest specialization is 24 core commercial trades, and SPM works with tile and stone contractors who want the same financial system: onboarding, clean books, a maintained 13-week cash flow forecast, and monthly health reviews, with job costing simplified to what the business runs on. The full 48-trade benchmark reference exists so owners in every trade can measure against real numbers. ---
CFOS serves commercial tile & stone subcontractors doing $1M to $12M. Pricing starts at $1,900 per month for companies under $1M and runs to $13,500 per month at the top published band. Onboarding takes 60 days.
Three tiers, and which one you are in depends on how much of the work you want off your desk. Core is where you stop guessing: job costing built against the way you estimate, a 13 week cash forecast, monthly WIP, and a monthly meeting that ends in decisions, while your bookkeeper keeps doing the books. Executive is where you stop touching the books, because we run the bookkeeping and the controllership as well. Strategic is where every job shows its margin while it is still running, because the job costing and WIP platform is set up and managed for you. No payroll. No scope gaps.
Sixty days. We migrate your books back to the start of your last taxable year, set up ControlQore, and build your job costing structure from scratch. Fully operational in two months.
$10.7M+
Client AR Recovered Since 2023
48
Active Trade Specializations
60 DAYS
Average Onboarding Time
WHAT THIS TIES INTO
Josh Luebker, The Construction CFO
Josh Luebker
FRACTIONAL CFO · THE CONSTRUCTION CFO

Former commercial project manager and master electrician: 150+ projects worth $2.1B combined, from $50,000 to $300M. Now fractional CFO to commercial subcontractors.

DO YOU KNOW YOUR TRUE MARGIN ON TILE & STONE WORK?

Twenty minutes of questions about how you price tile & stone work, what your substrate and materials really cost you, and what your last closed job came in at. Nothing gets sold and nothing gets proposed. If Josh can help, you'll set a longer call.

You don't hire a CFO because it's safe, you do it because the real risk isn't having one.
Book a 20 minute call

20 minutes. Nothing gets sold on this call and nothing gets proposed. Josh asks questions to work out whether he can help at all.

OR START WITH THE WORKBOOKS. NO CALL NEEDED.