Get Paid on Every Change Order

Change orders are where profit goes to tan without sunscreen. They start as small favors or verbal “go aheads,” then balloon into unpaid work, weird WIP balances, and an AR aging report that reads like a true-crime novel. The fix is not luck, and it is not yelling louder on day 75. It is a clean workflow that prices the change right, gets it approved in writing, books it correctly, and bills and collects it fast. Do that consistently and you will keep budgets, WIP, and margins lined up like fresh chalk lines on a slab.

Why Change Orders Blow Up Margins

Most contractors are not failing on production. They are failing on paperwork. Change orders are frequent, messy, and full of traps. Scope creep shows up as “just add two more fixtures,” or “shift that wall,” or “owner wants alternate tile.” Crews move forward because stopping a job is a bigger fire. The PM texts the owner. The owner nods at a walkthrough. The estimator never sees it. Accounting finds out when the job looks underbilled and margin drops.

Three common ways margin leaks happen. First, verbal approvals that never turn into signatures. Second, pricing shortcuts that forget mobilizations, tiny-quantity markups, permits, freight, and lost productivity. Third, misaligned accounting where revenue is recognized like it is already approved and billed, so WIP looks heroic while cash looks comatose. Fixing change orders is less about heroics and more about rules you actually follow.

The Accounting Rules That Keep You Paid

Under ASC 606, change orders are not a free-for-all. Treat them in three buckets that tie directly to your WIP and revenue recognition.

Approved means fully executed, signed by all parties, scope and price locked. These increase contract value and flow into earned revenue based on percent complete. They also go into the schedule of values so you can bill them.

Probable means you have strong, documented evidence the owner will approve. Think email confirmation from the owner’s authorized rep, agreement on price and scope, and a formal change directed under the contract. Revenue can be included, but only to the extent it is not constrained. Translation, recognize carefully and do not get out over your skis.

Not probable means submit your quote and do the minimum protective work if the GC demands it for continuity, but do not recognize revenue yet. You can carry related costs in WIP so your job cost stays honest, but you do not book revenue until you have the green light.

This bucket method protects you from fantasy profits. It also improves WIP accuracy. WIP compares what you have earned to what you have billed. If you treat everything as approved when it is not, you will overstate revenue. If you do not include probable changes that legitimately qualify, you can hide real performance and starve your cash flow because billing lags behind earned work.

Close the loop monthly. Update job estimates, move change orders between buckets as their status changes, and let your WIP report tell you where underbilling is building up. If your earned revenue is way ahead of your billings, you are carrying the owner’s project with your cash. If your billings are ahead of earned revenue, expect your PM to owe the project more work than cash suggests.

Price Change Orders Like a Pro

Change orders are not just a smaller version of your original bid. They are usually less efficient and more disruptive, so they deserve markups that reflect that reality. Price them with a checklist that forces you to catch every cost driver.

Start with labor. Include base hours, overtime premiums if schedule shifts, supervision time, and travel or parking for urban sites. Do not forget lost productivity when crews remobilize or switch tasks. Then capture materials with small-quantity pricing. One-off items have worse pricing and more waste. Add equipment and tool time, including rental minimums, delivery, and pickup. Include freight, permits, inspections, and badging or site orientation costs. If a sub is involved, get their written quote with a valid hold period.

For small or highly disruptive change orders, add a margin premium. You are not running a charity, and tiny changes derail schedules and kill efficiency. That bump is not greed, it is math that covers rework risk, admin churn, and the real cost of mobilizing short bursts of labor.

Put the schedule impact in writing. If a two-day change will push critical-path work by a week, price the time and note the impact on your substantial completion date. Time is money and the contract usually says so.

Use a consistent template so you do not forget parts. Every change order should include a clear description, reference to the RFI or directive, a line-by-line cost build, markup and fee, schedule impact, the new contract sum, and space for signatures. If the owner will not sign on site, use e-sign and route it in minutes. You are not done until it is signed.

Example: You are a mechanical contractor asked to relocate two supply runs after framing. Labor is 24 hours, with 6 hours at overtime due to off-hours access. Materials are small lots with a 20 percent price bump and extra couplings. There is scissor lift rental for two days with delivery. Add 4 hours of foreman time, 2 hours of project admin to update as-builts and coordination drawings, and a schedule write-up noting a one-day shift to rough-ins downstream. You add a 15 percent premium to margin because the change hits during MEP coordination week. That is how you get paid for the real cost of the ask, not just the pipe and fittings.

Approval and Documentation That Stick

Verbal approval is not approval. Friendly nods do not clear AP. Start changed work only after written approval unless your contract includes a change directive procedure that allows work to proceed with a pricing follow-up. If the GC demands immediate action, issue a field work authorization that references the contract clause, includes a not-to-exceed amount, and requires a signature on site. Then price and formalize the change order fast.

Keep a centralized change order log. Track each change from first hint to close-out. Include description, requested date, who requested it, your quote date, current status, expected value, recorded costs to date, and the bucket for revenue recognition. Review the log with operations and accounting monthly. Jobs go off the rails when the PM thinks a CO is approved, accounting thinks it is pending, and the owner thinks it is still under review.

Always record schedule impacts. If you secure extra time, you protect yourself from late penalties. If you do not, you could eat liquidated damages because the change was not tied to a time extension.

Store every attachment in one place. RFIs, emails, plan redlines, sub quotes, photos before and after, and site directive forms should all live with the change. Auditors will ask. Owners will ask when they hand your CO to their cost consultant. Having the file handy is the difference between a two-minute email and a two-week delay.

Keep Budgets, WIP, and Billing Aligned

Once a change is approved, the contract value must change, the project budget must change, and your WIP and billing must reflect the change immediately. Do not let operations promise to “roll it into next month” if you did the work this month.

Update your job cost forecast to include the new scope plus the revised estimate to complete. If the change affects productivity on the base scope, update that as well, not just the added work. Then update the schedule of values. Many contractors add a separate line for each approved change so billing is clean and auditable.

Bill promptly using progress billing or unit-based milestones that reflect real work completed. Do not wait for a fixed monthly cycle if your contract allows interim billing. The longer you wait, the farther behind your cash will fall and the harder it is to collect while memories are fresh.

Use your WIP report as the cockpit. It should show earned revenue based on percent complete compared to billings to date. If you are underbilled, catch it on the next draw. If the change is still pending but probable, be explicit about what portion is included in earned revenue and make sure you can defend it with documentation.

Example: A $1.2 million job with a $120,000 approved change is now a $1.32 million contract. You are 50 percent complete including the change scope. Earned revenue is $660,000. If you have only billed $600,000, you are underbilled $60,000 and should include that in your next application for payment. If you had recognized a $40,000 pending change as revenue last month but it turns out not probable, you must reverse it and stop pretending your margin is better than it is.

A Practical Workflow You Can Run Tomorrow

Start with a trigger. Any field directive, RFI answer that changes scope, or owner email is a potential change. The PM logs it immediately in the CO tracker and assigns it to estimating. Estimating builds the price with all the hidden costs and a schedule note. Operations reviews for feasibility and sequencing. If the change requires a time extension, that language is added.

Accounting sets up a unique CO number, a matching budget line, and a status of pending. If your contract allows a change directive, the PM gets the directive signed so crews can proceed safely. Otherwise, no boots move until the CO is approved.

Once signed, accounting updates the contract value and schedule of values. The PM issues the revised drawings or scope to the field and subs. Costs are coded to the CO line for instant visibility. WIP is updated before the next monthly review. Billing adds the CO line to the next pay app with backup. Collections follows up on the CO specifically, not just the overall draw, and notes any disputes early.

At close-out, the PM confirms that all COs are fully billed and collected. Accounting matches costs to billing, reviews margin against the CO estimate, and flags learnings for the next job. The log is archived with all documentation intact.

Tech That Saves Time

You do not need to build a spaceship. You do need systems that people will use. A digital CO template inside your project management tool solves half the battle. E-signature cuts the waiting game. Automated routing by dollar threshold sends small COs to the PM and larger ones to the owner rep and surety as required by the contract. A central CO log inside your ERP or shared drive keeps all teams honest.

Tie the CO log to your schedule of values and your WIP view so a status change triggers updates. If a CO flips from pending to approved, the contract value and SOV line get created. If a CO sits in pending for 30 days, the PM gets a reminder to escalate. Mobile photo capture for before-and-after proof makes approvals faster and disputes shorter.

Texas Specific Moves Contractors Should Use

Texas has its own rhythm and rules. On private work, the Texas Prompt Payment Act generally requires owners to pay within 35 days of receiving a proper invoice. Contractors then have 7 days to pay subs. Change orders count as part of that proper invoice, which means a sloppily documented CO can stall the clock. Send clean, contract-compliant pay apps that include approved CO lines and all required backup.

Retainage in Texas deserves your attention. Owners on private projects often withhold retainage, and Texas law generally requires owners to withhold 10 percent of the contract price until 30 days after completion to protect lien claims. Make sure your change orders flow into the retainage calculation and that your final billing includes retainage on all approved COs. If you forget to add CO retainage to the final invoice, you are leaving cash on the table.

Mechanic’s lien rights in Texas lean on documentation. To secure lien rights for unpaid change order work, you need written proof of the change, who authorized it, and when. Texas updated lien laws in 2022, including standardized lien waiver forms. Use the correct conditional and unconditional waivers tied to progress and final payments. Tie your waivers to the exact payment and CO numbers so you do not accidentally waive rights to unpaid change work.

If you are a subcontractor, mind the monthly notice deadlines. Extra work and change orders fall under the same notice framework as base scope. If a change drifts without signature, your ability to file a lien may be at risk. When in doubt, get the CO signed and noticed like any other part of the job.

Ask your attorney to review your contract language for change directives, time extensions, and whether email approvals count as written approval. Then train your team to use those clauses in the real world. A clause you never trigger is just ink.

Common Mistakes To Retire

Working without signatures. If you proceed without a signed CO or a valid change directive, you are asking to argue for free. Train your PMs to get something signed, even a field authorization, before material hits the site.

Pricing only parts and pieces. If your CO is basically “two doors at unit price,” you missed mobilization, supervision, admin, and freight. Your margin will look great on paper until overhead eats it for breakfast.

Recognizing revenue too early. Probable is not the same as certain. If you include big pending COs in revenue without strong evidence, you will eventually eat an ugly reversal.

Letting COs pile up. Ten small COs unpaid is a big AR problem. Keep the log current, and push for approval and billing weekly, not just at month-end.

Forgetting schedule impact. If you do not document time extensions tied to changes, you might win the CO and lose on liquidated damages. Put time in writing.

Ignoring subs. Do not carry a sub cost from a verbal. Get their signed quote that matches your scope and timing. If they slip, your price is wrong.

Metrics That Prove It Works

Track the percentage of COs approved versus requested. If you are stuck below 70 percent, your pricing or documentation is not convincing owners, or you are treating wishful thinking as real. Clean up the template, include schedule notes, and shorten the path to signature.

Monitor average days to approval and days to cash. From request to signature, your target should fit your contract rhythm, often 7 to 14 days for simple changes. From signature to cash, watch the prompt payment timelines. If you are drifting out to 60 or 75 days, fix your invoice package and chase earlier.

Measure underbilling related to COs. Compare earned revenue on COs to billed CO lines monthly. If you are consistently underbilled, your team is slow to update the SOV and send pay apps.

Watch margin slippage by CO. Price your CO at an expected margin, then compare to actual at close-out. If slippage is common, your pricing is missing hidden costs or your crews are not coding time accurately to the CO.

Keep a log of pending CO exposure. That is the dollar amount of costs incurred or work performed on COs not yet approved. Set thresholds for escalation. Above a set number, no additional change work proceeds without a signed directive.

How a CPA Team Can Help

You do the work. We make sure you get paid for it. Here is how we support contractors that are tired of watching change orders steal their lunch.

We set up your CO buckets inside your accounting system and WIP so accounting rules match how your team builds and bills. Approved flows into contract value automatically. Probable is tagged with constraints and supporting memos. Not probable stays out of revenue but carries costs so your job margin stays honest.

We build your CO template with cost buckets that force the right price. Labor tiers, overtime, supervision, small-quantity material premiums, freight, rental minimums, subs, permits, delivery, admin time, and schedule impact. Then we connect that template to a routing matrix. Small changes route to the PM and owner rep, large ones add executive or surety approvals without creating bottlenecks.

We coach your PMs on pay app timing. Progress billing should match earned work and include approved COs. We align your schedule of values with your log so nothing is left in email purgatory. If your contract allows earlier billing on long-lead items tied to a CO, we help you structure that so it passes audit.

We run monthly WIP with your operations leads. Every job’s CO list is reviewed, buckets are updated, and underbilling is flagged with a plan to cure it on the next draw. We reconcile CO costs to their lines so your margin is not bled by mis-coded hours.

On the tax side, we help you pick the right method for your size and contract mix. Some contractors stay on accrual for financials with ASC 606 while using cash or other permissible methods for tax. We keep the books clean so your banker, your surety, and your tax filings all agree on what work is real and what is still pending.

For Texas projects, we align your billing package with Prompt Payment timelines, retainage rules, and the current statutory lien waiver forms. We tag each CO on your pay app so waivers do not accidentally cover unpaid changes. When needed, we help draft owner-ready memos that tie schedule impacts to dollar impacts, which gets approvals faster.

If you want templates, we will hand you a fill-in-the-blank CO form, a CO log with status buckets, and an approval matrix by dollar level. We will also give you a monthly checklist that says: update estimates, move buckets, sync SOV, bill COs, and chase cash. It is not flashy, but it works.

Change orders are not free work with paperwork at the end. They are mini-projects with their own economics, their own approvals, and their own billing rhythm. Price them correctly, approve them in writing, book them cleanly, and bill them quickly. Do that, and your margins stop leaking and your cash keeps up with your crews.