Change Order Practices

How to run a change order process that protects your margin, your relationships, and your legal standing — from verbal agreements to signed COs and everything in between.

The Costly Habit of Verbal Agreements

The homeowner walks the site on a Tuesday afternoon, points toward the back patio, and says: "While you're at it, can you run a gas line out here? We want to put in an outdoor kitchen eventually." You say sure, you'll add it to the price. You make a mental note, your foreman gets the direction, the plumber runs the line. Three months later, you're invoicing for the final draw and the homeowner has no recollection of that conversation — or they claim they thought you meant it was already included in the original scope. The line has been run. The work is done. Your negotiating position is gone.

This scenario plays out thousands of times a year across residential construction, and it costs builders real money. Not because homeowners are necessarily dishonest — though some are — but because verbal conversations are genuinely ambiguous in retrospect. People hear what they want to hear. Months pass. Details blur. The homeowner may have had a completely sincere understanding that the gas line was included in the base contract. You may have a completely sincere memory of agreeing to add it at extra cost. Both of you believe you're right, and there's no document to resolve the disagreement.

The solution is not complicated, but it requires discipline that runs counter to the pace of a busy job site: nothing is added, removed, or changed without a written, signed change order before the work happens. Not a text message. Not an email. Not a handshake. A document with a description, a price, a signature, and a date. This single practice — consistently followed — will protect more of your margin than almost any other operational improvement you can make.

What Makes a Change Order Enforceable

A change order is a written modification to your construction contract. It amends the agreement between you and your client. For it to hold up when someone pushes back — or when you're sitting across a table from an attorney — it needs a few things.

First, a clear description of what is changing. This is where most builders shortcut the process and pay for it later. "Add gas line" is not a description. "Install approximately 50 linear feet of underground CSST gas line from existing meter at north side of structure to new patio stub-out at south exterior wall, per approved site plan revision dated [date]" is a description. The difference matters enormously in a dispute. A vague description leaves room for the homeowner to argue that the scope they received was different from the scope you intended to deliver — or different from what you actually delivered.

Second, the financial impact — the total price change and how it affects the contract sum. Third, the signature of the authorized decision-maker. Confirm who this is at the beginning of every project. On a married couple's custom home, do both spouses need to sign? Does the wife have authority to approve COs while the husband is traveling? Get this in writing in your original contract. A CO signed by a homeowner's adult child who was on site that day is not a CO signed by the homeowner. Fourth, the date signed. This establishes when authorization was given relative to when work started. If the date on the CO signature is after the date the work was completed, you have documentation of an after-the-fact authorization rather than a proper pre-work approval — which is better than nothing, but not as strong as a signed CO before work begins.

Your original construction contract should include a clause specifying that all changes to scope must be executed through a written change order. This creates a contractual basis for refusing to do work — or to demand payment for work already done — without a signed CO. Talk to your construction attorney about the specific language appropriate for your state.

When to Write a CO vs. Absorb the Cost

Not every cost overrun is a change order opportunity, and treating every budget variance as a billable event will damage your homeowner relationships and your reputation. The distinction matters — here's a practical framework for sorting it out.

There are three categories of cost increases on a residential project:

Always write a change order. Anything the owner requests that wasn't in the original scope. Any addition, deletion, or modification of specified materials, finishes, or systems. Unforeseen conditions that genuinely couldn't have been anticipated and require additional work — a buried oil tank, a structural member in the wrong location, soil conditions that differ materially from what the geotech report indicated. Code interpretations or AHJ requirements that weren't foreseeable at the time of bid and that require work beyond original scope. Schedule impacts caused by owner decisions or delays. These are legitimate changes to the contract and they deserve legitimate change orders.

Consider writing a change order if the dollar amount is significant. Material price escalation on items not yet purchased where the escalation is beyond normal market volatility. Significant design evolution by the owner that stays nominally within original scope but drives real cost — for example, a homeowner who changes the tile selection three times and each revision requires additional labor. The threshold for "significant" is your judgment call, but anything over $500 that has a clear external cause is worth at least presenting as a CO.

Absorb the cost. Your own estimating errors on clear-scope items — you forgot to include the subflooring allowance, you underpriced the painting labor, you missed a line item. Minor omissions that a reasonable, experienced contractor in your market would have included in the scope. Mistakes made by your crew that require rework. These are the cost of doing business, and charging the homeowner for your errors is both ethically questionable and damaging to the relationship. Own your mistakes and build better estimates next time.

When you're genuinely uncertain whether something belongs in category one or three, err toward writing the CO. A homeowner who disagrees can say no — and their declination is itself valuable documentation that they were informed of the issue and chose not to authorize the additional work. A homeowner who never saw a CO has much more leverage.

Pricing Change Orders Accurately

Change orders are often under-priced, which compounds the original problem of margin erosion from scope creep. A CO price should include every cost the change actually creates, not just the most obvious one. That means materials at your current cost plus markup, labor at your fully burdened rate (not just the hourly wage — include payroll taxes, workers' comp, and benefits), sub costs plus your overhead and profit margin, and any indirect costs the change creates.

That last category is the one most builders forget. A change that pushes the project schedule out by two weeks has real costs: additional supervision time, extended builder's risk insurance, additional loan interest if you're using construction financing, and potentially delayed receipt of your final draw. A change that requires demo and replacement of work already completed has the cost of the original work plus the cost of the new work. A change that requires you to re-coordinate with multiple subs — reschedule the tile setter because the homeowner changed the floor layout — has real coordination cost even if the material cost is minimal.

Never price a CO at cost just to keep the peace. When you do, you're subsidizing the homeowner's decision-making and establishing a pattern: the homeowner learns that changes are essentially free (or near-free), which creates an incentive to keep making them. Price every CO at full cost plus your standard overhead and profit. If the homeowner pushes back on price, you can have a conversation — but start from full cost, not from a discounted position that assumes the negotiation will happen.

The CO Lifecycle: Five Steps

Every change order follows the same path, regardless of how simple or complex the change is. Internalizing this sequence and making it habitual is what separates builders who consistently recover CO costs from builders who don't.

1. Discovery. The need for a change is identified — by the homeowner, by you, by your superintendent, by an inspector, or by unforeseen site conditions. Document the discovery immediately: what was found, when, and by whom. If the homeowner made a verbal request, note it in writing the same day.
2. Pricing. Calculate the full cost of the change — materials, labor, sub costs, markup, and any schedule or indirect cost impact. Get sub quotes in writing when the dollar amount is significant. Don't rush this step; a mis-priced CO that you have to eat is worse than a short delay in presenting it.
3. Presentation. Present the CO to the owner in writing with a clear description of the scope change and the total price impact. Give them a reasonable window to review — a day or two for most changes, longer for major scope additions. Be available to answer questions and provide supporting quotes if they ask. Don't present a CO verbally and expect a verbal answer; the whole point is to create a written record.
4. Authorization. The owner signs. Work does not start until you have a signature. This is the non-negotiable step. Everything before this is preparation; this is the moment that protects you.
5. Execution and documentation. Work proceeds per the CO scope. The signed CO is filed in your project records. The contract sum and any applicable schedule extension are updated. If the change affects your draw schedule or your lender, update those records as well.

The five steps seem obvious laid out this way. What breaks down in practice is almost always step four — either the builder starts work before getting a signature (covered in the next section), or the presentation step is done verbally with a verbal approval treated as a signature. Neither shortcut holds up when the relationship gets adversarial.

Getting Authorization Before Work Begins

The most common and most expensive CO mistake: doing the work, then presenting the CO. Once the work is done, your negotiating position is gone. The homeowner knows the gas line has been run. They know the deck addition is framed. They have no urgency to approve the CO because the thing they wanted is already there. You are now arguing for payment on work already completed, which puts you in a weaker legal and psychological position than arguing for authorization before work begins.

Contractors rationalize the premature start with urgency: the homeowner needed it done quickly, there wasn't time to wait for a signature, the crew was already there and it made sense to do it. In most cases, there was time. Twenty minutes to get a document signed, or even a text message confirmation, is almost always available. The real issue is that stopping to get authorization feels awkward — it interrupts the flow of the project, it might prompt the homeowner to reconsider, it requires a conversation about money. Those feelings are manageable. The alternative — completing unpaid work and then trying to recover the cost — is not.

The rare genuine exception is an emergency where stopping creates a safety risk or causes damage: an active water leak that requires immediate scope expansion, a structural failure that demands immediate response. In those cases, start the work and document the verbal authorization in writing the same day. "Confirming our phone call at 2:15 PM today — authorized to proceed with emergency waterproofing per our conversation. Formal CO to follow." Send it by email so you have a timestamp. Get the formal CO executed as soon as the emergency is stabilized.

Handling Verbal and After-the-Fact COs

Despite your best efforts, work will sometimes get done before a CO is signed. Maybe your foreman made a field decision. Maybe the homeowner called your super directly and asked for something added. Maybe an urgent condition genuinely left no time. Here's how to recover the situation as cleanly as possible.

The moment you know work has proceeded without a signed CO, document the verbal authorization contemporaneously. Write an email or text to the homeowner the same day: "Hi Sarah — just confirming our conversation this afternoon. We've begun work on the gas line extension to the patio. The additional cost is approximately $2,400; I'll send a formal change order for your signature within 24 hours." Send it so you have a timestamp. Then send the formal CO as soon as it's prepared. When the homeowner signs, note the original authorization date in the CO. This creates a record that shows the homeowner was informed and implicitly consented before the formal document was executed, even if the sequence wasn't ideal.

Keep after-the-fact COs rare. Once the pattern of verbal authorization becomes accepted on a job, it's nearly impossible to reverse. Homeowners learn that they can direct changes verbally, and your crew learns that waiting for paperwork isn't required. The next CO that the homeowner disputes will be harder to recover because the precedent of informal authorization is established. Every after-the-fact CO costs you a little credibility and a little leverage. The habit only gets harder to break as the job progresses.

Record-Keeping Discipline

Every change order on every project should be numbered sequentially — CO-001, CO-002, CO-003 — and filed permanently in your project records, including rejected COs. The rejected ones are particularly important and routinely discarded by builders who think only approved COs matter. A rejected CO is documentation that you identified a change, priced it correctly, presented it to the owner, and the owner declined to authorize additional scope. If that owner later claims they didn't know the rotten sill plate existed, or that you never told them the foundation waterproofing was beyond original scope, your rejected CO proves otherwise. You put it in writing. They said no. That's a very different legal position than "we had a conversation."

Your complete CO log — with status, amounts, and dates — should be part of your project closeout package and retained for at least five years after substantial completion. In states with longer construction defect statutes of limitations, retain it for the full statutory period. Some builders use their CO documentation as part of draw package submissions to construction lenders; a well-organized CO log with supporting documentation demonstrates the kind of operational discipline that lenders notice. Clean records also protect you from claims that the project went over budget due to your mismanagement — the CO log is the evidence that the owner made the decisions that drove the cost.

In Baulit

Baulit's change order system auto-numbers COs sequentially (CO-001, CO-002, and so on) so your log stays organized without manual effort. Each CO moves through a status workflow — Draft, Submitted, Approved, or Rejected — giving you a clear view of what's pending homeowner action and what's been resolved. The status history is timestamped, so you have a record of when each CO was submitted and when it was acted on.

When a CO is approved, it integrates directly into the project budget — the contract sum updates automatically and the additional cost flows into the appropriate budget category. You never have to manually reconcile your CO log against your budget; Baulit handles the arithmetic. Rejected COs remain in the log permanently, visible with their full description and the date they were declined.

The print view generates a professional change order document that includes your company name, the project address, CO number, scope description, price, and signature line — suitable for presenting to the homeowner for wet signature or for attaching to a PDF for electronic review. The AI CO narrative feature can draft the scope description from your rough notes, saving time on documentation without removing your judgment from the final language before it goes to the homeowner.