The most useful siding job scorecard compares the signed price and approved changes with actual material, labor, other direct costs, schedule, and gross margin.

Contractor Job-Costing Guide

What Numbers Should a Siding Contractor Track on Every Project?

A siding contractor needs more than the contract total to know whether a project went well. The useful comparison is what was sold and estimated versus what the job actually consumed. Keep a short scorecard for every project, using the same definitions each time. It should show the selling price, scope, material and labor usage, other direct costs, schedule, and resulting gross margin.

The Core Siding Job Scorecard

Number	What to record	Why it matters
1. Contract value	Signed price plus approved changes, tracked separately from payments received.	Shows the revenue the project is expected to earn.
2. Measured scope	Wall area by elevation, product, color, profile, openings, and major details.	Lets you compare similar jobs and explain quantity changes.
3. Material usage	Estimated, purchased, transferred in, returned, retained, damaged, and used quantities.	Reveals takeoff errors, surplus, shortages, and waste.
4. Material cost	Estimated cost versus actual net cost assigned to the job.	Shows whether purchasing and product choices held to the bid.
5. Labor	Estimated versus actual crew hours and loaded labor cost.	Shows the impact of complexity, downtime, and rework.
6. Other direct costs	Subcontractors, delivery, equipment, permits, disposal, and job-specific repairs.	Prevents small omitted costs from hiding in the margin.
7. Time and interruptions	Planned versus actual start and finish, unplanned material runs, and documented delay causes.	Connects cost differences to what happened in the field.
8. Gross profit	Job revenue minus direct job costs; divide by job revenue for gross margin.	Shows what remains to cover overhead and company profit.

Keep the Sold Scope and Changes Separate

Save the signed proposal, product selections, and original estimate. Record each approved change with its price, material, and labor impact. Otherwise a job with an added gable or hidden wall repair may appear to have missed its estimate even though the scope changed.

Track the amount invoiced and collected as separate fields. A signed change order is not the same thing as cash received. The IRS small-business recordkeeping guidance emphasizes orderly supporting documents for income, purchases, and expenses. The project scorecard helps manage the work; accounting records should follow the company’s normal system.

Track Materials in Quantities and Dollars

A supplier invoice shows what was purchased, not necessarily what the job used. Record panels and accessories by product, color, and profile. Add stock transferred into the job. At closeout, record actual supplier credits and material transferred out to company stock or another job. Material installed, damaged, discarded, or left with the homeowner under the agreement remains part of the job’s material record.

Compare the result with the original takeoff. The Polymeric Exterior Products Association (PEPA) estimating worksheet separates siding areas and accessories and gives a starting waste allowance for vinyl siding. Tracking actual use tells a contractor whether its own allowance and accessory counts fit the houses it builds.

Track Labor Hours, Not Just Payroll Dollars

Log hours by job and, when practical, by activity: removal, preparation, siding, trim, and return work. Compare those hours with the original estimate. A job that ran long because of an added homeowner request needs a different correction from a job that ran long because the crew made repeated material trips.

Use the company’s loaded labor cost consistently. The U.S. Bureau of Labor Statistics’ employer compensation data distinguishes wages from benefits, a reminder that the hourly wage alone does not represent the full employer cost. Record actual idle time and overtime without counting the same hours twice.

Calculate Gross Margin the Same Way Every Time

Suppose the signed price plus approved changes is $20,000. Actual direct costs are $6,000 in materials, $7,000 in loaded labor, and $2,000 in delivery, equipment, disposal, and other direct expenses. Direct costs total $15,000. Gross profit is $5,000, and gross margin is $5,000 ÷ $20,000 = 25%.

If material cost then rises $500 without additional revenue and other costs stay the same, gross profit falls to $4,500 and gross margin to 22.5%. These are illustrative numbers, not target margins for every contractor. Gross profit must still cover allocated company overhead before the owner can assess net company profit.

The U.S. Small Business Administration’s break-even guidance explains why tracking fixed and variable costs helps a business understand the price needed to cover its expenses.

Record the Reason Behind Every Major Variance

A number is most useful when the contractor knows why it changed. Add a short note for an omitted elevation, damaged material, missing trim, concealed repairs, weather interruption, additional delivery, homeowner change, or supplier order discrepancy. Confirm whether the cost was recovered through an approved change.

At closeout, count usable leftovers, returns, and scrap. The U.S. EPA’s construction and demolition materials guidance supports planning, salvage, and reuse where practical. Those counts also help refine the next takeoff and reduce unnecessary purchases.

Keep the Scorecard Short Enough to Use

Assign one job number to the proposal, supplier orders, labor time, change orders, delivery charges, returns, and final invoice. Review the numbers when the project closes, then review any callback cost later under the same job number. A simple, consistently completed sheet is more useful than a complicated report no one updates.

Compare similar projects—such as comparable profiles, wall complexity, and crew conditions—before changing estimating rates. The objective is to find repeatable causes of margin loss and improve the next bid.

Start With a Material Quote You Can Measure Against

Suburban Wholesale & Supply helps contractors in Davenport, Bettendorf, Moline, Rock Island, and surrounding Eastern Iowa and Western Illinois communities review siding and accessory selections. A clear order with product details and separate quantities makes it easier to compare the original quote with purchases and actual usage.

The contractor remains responsible for field measurements and its own job-cost records. Bring your elevations and selections to our Davenport professional quoting team, request a quote online, or call 563-391-4000.

What Numbers Should a Siding Contractor Track on Every Project? | Suburban Wholesale & Supply