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Change Orders: How Contractors Handle Scope Changes Without Fights
Most arguments at the end of a job trace back to a change agreed out loud in the middle of it, and a one-page change order written before the extra work starts turns that conversation into a signed number.
At a glance
- A change order is a short written agreement, signed by the customer and the contractor, that records what is being added, removed or swapped on a job, what it costs and how it moves the schedule, before anyone does the work.
- Home improvement and contractor problems ranked second of ten complaint categories in the Consumer Federation of America's survey of 33 state and local consumer agencies for 2023, behind only auto sales and repair.
- In an illustrative $40,000 kitchen job, doing three small extras for free instead of writing them up cuts the contractor's profit from $4,750 to $1,000.
- A change order process needs four habits: stop before the extra work, write it on one page, get a signature and a payment term, and update the running total the customer sees.
- General information, not legal/tax/financial advice; talk to a licensed professional about your situation.
Part 1 | Most fights about money start as a friendly yes
Almost every remodel changes after it starts, because homeowners see the space opened up, a wall turns out to hide old wiring or a fixture they picked is back-ordered, and the request usually comes in a hallway conversation that feels too small to stop for. The contractor, wanting to keep the customer happy and the crew moving, says yes and plans to sort out the price later; the customer hears the yes and assumes the price is included, so two people walk away from the same sentence with two different invoices in their heads.
That gap shows up in complaint data. The Consumer Federation of America's annual survey of consumer protection agencies, covering 33 agencies in 24 states, ranked home improvement repairs and contractor issues second of ten complaint categories for 2023, and one of the cases it described was a homeowner who agreed to a quote without a formal contract and was later asked to pay more for "unforeseen expenses." The owner's first instinct is often I'll just eat the small stuff and keep things friendly, which works until the small stuff adds up to the profit on the job.
| Rank | Complaint category |
|---|---|
| 1 | Auto sales and repair |
| 2 | Home improvement repairs and contractor issues |
| 3 | Retail purchase issues |
| 4 | Consumer debt and credit |
| 5 | Frauds and scams |
Part 2 | Some states already expect the changes in writing
Several state consumer offices already treat written changes as part of the contract rather than a courtesy. New York's Attorney General tells homeowners that state law requires a written home improvement contract and that "any verbal changes to the project must be added to the written contract," since the contractor is bound only by what the contract says. Massachusetts requires residential contracting work over $1,000 to be in writing, limits the deposit to one third of the total except for special-order materials, and warns homeowners that a term left out of the written contract can be hard to prove later.
Rules differ by state and by the size of the job, so the safe habit is to check your state's home improvement law with a licensed attorney or your state consumer office and build your change order form to match it. Whatever the state, a written change protects the contractor as much as the homeowner, because it is the document that shows the customer asked for the extra work and agreed to the price.
Part 3 | A change order process in four steps
The habit that keeps change orders from feeling like a confrontation is to treat them as routine paperwork that every customer sees, explained at the contract signing, so the first one does not arrive as a surprise in the middle of the job. When the contract itself says how changes are handled, the change order becomes the contractor following the agreement the customer already signed.
- Stop before the extra work starts. The crew lead's line is simple: Happy to do that; let me write it up so you can see the price before we start. Work that has not begun is easy to price, and work already finished is a negotiation.
- Write it on one page. Record the job name, the change in plain words, the materials, the added or removed cost, the effect on the schedule in days and the new contract total.
- Get a signature and a payment term. A text or email approval with the page attached, or a signature in your field software, is enough in many cases; state when the change is billed, either with the next progress payment or up front for special-order items.
- Update the running total. Send the customer the revised contract total after each change, so the final invoice matches a number they have already seen several times.
The worked example below shows where those figures come from, using a mid-sized kitchen remodel and three common mid-job requests such as an added outlet, an upgraded faucet and extra tile in a backsplash.
| Original contract price (Assumption) | $40,000 |
|---|---|
| Original job cost (Assumption (10% profit)) | $36,000 |
| Mid-job changes requested (Assumption) | 3 |
| Cost to the contractor per change (Assumption) | $1,000 |
| Price per change if written up (Assumption) | $1,250 |
| Profit with all changes billed (Calculated ($43,750 − $39,000)) | $4,750 |
| Profit with all changes absorbed (Calculated ($40,000 − $39,000)) | $1,000 |
| Profit given up (Calculated ($4,750 − $1,000)) | $3,750 |
Illustrative example; replace every assumption with your own numbers.
The math is lopsided because a contractor's profit is a thin slice of the contract price, so each free extra comes almost entirely out of that slice rather than out of the price as a whole; in this example the three extras cost 7.5% of the original contract price but take 79% of the profit the job would have earned.
How you compare
- Written contract: in Massachusetts, any residential contracting job over $1,000 must be in writing; if your jobs routinely start on a text message and a handshake, you are below that bar, whatever your state requires.
- Deposit: Massachusetts caps the advance payment at one third of the total except for special-order materials, a useful reference point when you set your deposit and change order payment terms.
- Your own baseline: count how many changes happened on your last five jobs, how many were written up and how many were billed, and you will have your own change order capture rate to improve on.
Questions to ask this week
Does our contract say how changes are handled? One paragraph naming the change order form, the approval method and when changes are billed sets the expectation before the first request.
Who on the crew is allowed to say yes? If any technician can agree to extra work, give each of them the same one-line script and the form.
How many changes did we absorb on the last five jobs? Add up what each one cost you in labor and materials.
Does the final invoice ever surprise the customer? If it does, the running total is not reaching them during the job.
The next step is to write your one-page change order form this week, add a paragraph about it to your contract and walk the crew through the script before the next job starts.
About this research: This article draws on the Consumer Federation of America's 2023 Consumer Complaint Survey Report, consumer guidance from the New York and Massachusetts Attorneys General on home improvement contracts and an illustrative worked example. State rules differ and change; check current law in your state.
Sources
- Consumer Federation of America. 2023 Consumer Complaint Survey Report. 2024. Top-ten data from 33 state and local consumer agencies in 24 states.
- New York State Office of the Attorney General. Home Improvement Contractor Tip Card.
- Office of the Attorney General of Massachusetts. Consumer Guide to Home Improvement.
Related reading: The Agreements Every Small Service Business Should Have in Writing · How Much Deposit Should a Contractor Take, and How to Ask for It · What Small Business Disputes Cost, and How Paperwork Prevents Them · Terms Customers Actually Read: Making Service Terms Plain
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