JOB COSTING — COST TO COMPLETE

COST TO COMPLETE: THE NUMBER THAT KEEPS JOBS HONEST.

QUICK ANSWER

Cost to complete is the answer to one question, asked line by line: how much more money will it take to finish this job? Cost to date is bookkeeping — it already happened. CTC is the management number: it drives your real percent complete, your projected final margin, your WIP schedule, and the only early warning a fading job ever gives. The honest version is built line by line from remaining work — remaining hours times burdened rates, remaining quantities times unit costs, committed subcontract balances — not by subtracting spend from budget, which just assumes the estimate was right. Billion-dollar GCs run this discipline monthly on a dedicated day. It works exactly the same at $5M, and it's the difference between catching a slide at 40% complete and autopsying it at closeout.

BUDGET MINUS SPENT IS NOT COST TO COMPLETE. IT'S A PRAYER WITH ARITHMETIC.

BY JOSH LUEBKER Published: June 2026 Updated: June 2026

THE METHOD

BUILDING CTC LINE BY LINE.

STEP 01 — FORECAST REMAINING WORK, DON'T SUBTRACT

The Estimate Was a Plan. CTC Is a Measurement.

The lazy CTC — budget minus cost to date — silently assumes the original estimate was perfect, which is the one thing a fading job has already disproven. The honest method asks each line what it will actually take to finish: labor as remaining hours at current burdened rates and current production (if the crew is running 20% over estimate, the remaining hours are too), material as remaining quantities at current prices, equipment as remaining duration at real daily rates, subs at committed contract balances plus expected changes.

STEP 02 — MATCH THE PERCENT-COMPLETE METHOD TO THE COST TYPE

Units for Quantities. Hours for Labor. Milestones for Subs.

One blended percent complete hides everything. Quantity-driven lines (yards placed, feet installed) measure off units in place. Labor measures off hours — earned versus burned at current productivity. Subcontracted scope measures off milestone completion, not invoices received. Material-heavy lines need the stored-versus-installed distinction or a big delivery fakes progress. The job's overall percent complete is the cost-weighted rollup of honest line measurements — never a field guess, and never just cost-over-budget.

STEP 03 — RUN THE MONTHLY CADENCE

First Monday After the Tenth. Every Job. No Exceptions.

CTC is a discipline, not a document: whoever owns each job's financials updates it monthly — percent complete and money left per line — and presents it after the books close on the 10th. Twenty minutes per job once the structure exists. The rollup feeds the WIP, the projected final margins, and the management conversation: which lines moved, why, and what we're doing about it. It's accountability that surfaces problems leadership can still solve, which is precisely why the billion-dollar companies never skip it.

STEP 04 — READ THE RED FLAGS

What a Fading Job Looks Like at 40% Instead of 100%

The signals worth a same-week conversation: projected final margin sliding two reviews in a row, labor percent complete lagging cost percent complete (burning hours faster than earning them), a line at 90% spent and 60% complete, CTC revised upward on the same line twice, and percent complete that hasn't moved while costs have. Every one of these is invisible in a budget-minus-spent world — and obvious in an honest CTC. Fade caught at 40% gets re-sequenced, backcharged, or claimed. Fade found at closeout gets eulogized.

BY TRADE

CTC MECHANICS, TRADE BY TRADE.

Concrete & Structural

Measure off yards and square feet in place, with finishing labor forecast separately — it's where concrete jobs fade and a blended percent hides it. Stored rebar and embeds need the stored-versus-installed split or deliveries inflate progress.

Civil & Sitework

Unit-price scopes make CTC cleaner — remaining quantities times unit cost — if field quantities are surveyed honestly. The trap is equipment: remaining duration at real daily rates, including the idle days the schedule slip just created.

Electrical & Multi-Phase

Phase-level CTC or nothing: rough-in, trim, and closeout fade differently, and the closeout tail — punch, testing, commissioning — chronically gets forecast at zero remaining hours when it's months of labor. Pending COs carry their own CTC lines.

SWPPP & Multi-Site

CTC per site, rolled up per contract. Maintenance-phase scopes need duration-based forecasting — remaining months times monthly burn — and the storm-response work belongs in CTC the week it happens, not after the season.

WHAT CHANGES WHEN THIS IS FIXED

WHAT HONEST CTC PRODUCES, ON THE RECORD.

40%

The point fade gets caught instead of mourned. The entire value of CTC is timing: a job sliding from 24% to 19% margin shows up in the monthly review as a cost-to-complete move while there's still 60% of the job left to fix it in. The $4.9M concrete sub that went from $161K to $1.1M net didn't bid better — it started seeing jobs slide in month two instead of at closeout.

Monthly

The cadence that feeds everything downstream. CTC drives the WIP (earned revenue and over/under-billings compute from it), the projected final margins on the CEO Report, and the percent complete your surety underwrites. One honest monthly discipline, four documents that stop lying.

20 Min

Per job, once the structure exists. The objection to CTC is always time — and it's true when job costing is a shoebox. With cost codes matching the estimate and costs landing weekly, the monthly update is twenty minutes per job. The structure is the work. SPM builds it in the 60-day install; the discipline rides on top.

Frequently Asked Questions

Cost to complete (CTC) is the forward number: dollars remaining to finish, built line by line. Estimate at completion (EAC) is cost to date plus CTC — the projected total cost of the job. Contract value minus EAC is your projected final profit, and tracking that number month over month is the entire point: a stable EAC means the job is performing; a creeping EAC is fade announcing itself with months of warning. The three numbers travel together, and CTC is the one that requires actual judgment — the other two are arithmetic on top of it.

Cost-to-cost (cost to date divided by EAC) is the standard for WIP and revenue recognition — but its accuracy depends entirely on an honest EAC, which depends on an honest CTC. For managing the work, measure each cost type its own way: units in place for quantity scopes, earned-versus-burned hours for labor, milestones for subs. When the cost-to-cost number and the physical measurements disagree, believe the physical ones and fix the EAC — that disagreement is usually the first visible sign of a problem. A big material delivery, for instance, spikes cost-to-cost percent complete while the work hasn't moved; the line-level view catches it.

Whoever runs the job operationally — the PM, or the owner on owner-run jobs — because CTC is a judgment about remaining work, and only the person managing the work can make it honestly. Accounting provides the cost-to-date data and challenges the assumptions; the field provides the truth about what's left. The failure mode to avoid is accounting doing it alone (budget-minus-spent with a spreadsheet) or the field doing it alone (optimism with a hard hat). The monthly review where PM presents and leadership questions is where the two halves keep each other honest.

They're describing a real problem with the wrong cause. CTC takes hours when the underlying job costing is broken — costs landing late, codes not matching the estimate, everything requiring reconstruction. With the structure right (codes mirroring the estimate, costs posted weekly, a one-page CTC format per job), the monthly update is 20–30 minutes per job, and PMs end up demanding the system because it answers the questions GCs ask them anyway. If your PMs genuinely can't produce a CTC in under an hour, the finding isn't that CTC is too expensive — it's that your job costing can't support managing jobs at all.

It's built into the 60-day install: cost codes structured to match your estimating (so estimate-versus-actual is native, not a translation exercise), weekly cost posting so the data is current, the one-page CTC format per job, and the monthly cadence — books closed by the 10th, CTC reviews the first week after, results flowing into the WIP and the CEO Report. SPM runs the accounting side and sits in the monthly review asking the questions; your PMs own the field judgment. Within two cycles the review stops being a meeting about spreadsheets and becomes the meeting where jobs get saved.