How to charge for extra work before you do it

A homeowner asks for an ice-maker line while you’re already working in the kitchen, and you’re about to say yes without a price. Here’s how to charge for extra work before that favor eats the job: describe the change, price it, get a written yes, then do it. This guide gives you a message and a pricing check you can use on your next job.

The pattern is easy to recognize. The ice-maker line becomes a doorbell replacement, then a cabinet change. Each request seems manageable while you’re standing there. At closeout, you finally add up the materials, extra trips, and labor. The work is finished, but the price conversation hasn’t happened.

Now the homeowner is hearing a bill for something they thought you had already agreed to handle. You’re looking at what remains before paying yourself. A small yes in the hallway is how the margin leaves.

How to charge for extra work at the moment it comes up

Replace “Sure, we can do that” with a sentence that keeps the request open without committing your crew:

“We can look at that. It’s outside the current scope, so I’ll send you the added price and any schedule change before we start.”

You haven’t refused the work. You’ve told the client what happens next.

Make that the crew’s answer, too. A helper can write down the request and take a photo. They should send it to whoever owns pricing before promising labor, materials, or a completion date. Choose one person on your side to authorize extras so the homeowner doesn’t get different answers from different people.

The decision point belongs before ordering a part, calling a sub back, or removing something the client might decide to keep.

Check whether it is actually extra

Pull up the accepted scope before pricing the request. The client may be asking for something you already included. A vague description such as “finish kitchen plumbing” makes an ice-maker connection harder to separate than a list of specific connections.

Use this check to decide what conversation you need:

Hidden costs in a remodel need an explanation tied to the actual condition. Show the damaged area, explain what you found, and describe what must change. For a client-requested upgrade, point to the original selection and the requested replacement.

That distinction helps you avoid charging twice for included work or quietly absorbing a new request.

Price the whole interruption

The material receipt is only one part of the extra. Before sending a number, account for the work required to deliver it:

• Materials, delivery, and any return or restocking cost.
• Employee labor and subcontractor charges.
• Your own measuring, purchasing, installation, and coordination time.
• Protection, removal, patching, cleanup, and disposal.
• A return visit or a change to work already scheduled.
• Overhead and profit under your usual pricing method.

Count only costs that apply. Being on site may genuinely reduce the added work. It doesn’t make your time free.

If the request replaces something, work out the credit before presenting the net addition. An unpurchased item is different from a custom item already delivered. Explain which costs can be avoided and which have already been incurred.

When you cannot define the work yet, price a limited investigation first or agree on a clear time-and-materials basis with a spending limit. State what happens when that limit is reached. Don’t turn an unknown into a fixed promise just to keep the conversation short.

Worked example: a cabinet change with your labor included

Suppose a homeowner requests a cabinet modification after approving the original layout. The following figures are invented to demonstrate the calculation. They are not market rates, customer results, or a recommended markup.

Assume the original work being replaced has already been accounted for, and there is no further credit in this example.

The id="root"30 is available for overhead and profit; it is not all take-home profit. The owner’s labor is already counted in the cost.

If you leave your own time out, the job appears to cost $400. Applying the same markup produces a $500 price. Once you recognize the full $520 direct cost, that price doesn’t cover it.

That is why “I’ll just handle it myself” belongs in the estimate. Your labor still uses hours you could spend on the original job or another paying job.

The client-facing description can be much shorter than your internal calculation:

Kitchen cabinet modification, revision 2 Modify the sink-base cabinet opening to suit the revised layout shown in the attached marked photo. Includes protection, modification, matching filler, installation, and cleanup. Countertop alterations and plumbing relocation are excluded. Added price: $650 before applicable tax. Add one working day to the cabinet work. Payment for this addition is due when the cabinet modification is complete, under the revised agreement.

Before sending, replace the assumptions with the actual scope, tax treatment, timing, and payment terms for your job. The client should see the final amount they are being asked to accept.

Send the message the same day

A request made during the morning walkthrough should not disappear into your memory until invoice day. Send the price that afternoon if you have the information. If you’re waiting on a supplier, say when you expect to return with it.

Here is a short message to copy:

Hi [name], following up on the [requested change] we discussed today. It’s outside the accepted scope. The attached revision adds [exact work] for [total added price] and changes completion to [date / no change]. Payment for the addition is due [agreed milestone]. Please review and accept the revision before we start that work. Until then, we’ll hold this extra and continue the unaffected work.

Attach or link the actual revision. Keep its description consistent with the message. If the email says “replace cabinet” and the document says “modify cabinet,” fix the mismatch before requesting acceptance.

For an unpriced request, use:

“I’m checking the material and labor cost for that change. I’ll send the price by [time]. We haven’t added it to the work yet.”

That last sentence gives both sides the same understanding while you get the number right.

Get acceptance of the price, scope, and timing

A client saying “yes, that’s the cabinet I meant” confirms the selection. It doesn’t clearly confirm the added price or schedule. Ask for acceptance of the complete revision through the method required by your agreement and local rules. Silence leaves the extra on hold.

For example, California’s Contractors State License Board says changes to a home-improvement contract’s price or scope require a written change order signed by the customer and contractor before the change. A casual text reply should not be treated as a universal substitute for the required document. CSLB contract guidance

Keep the accepted revision with the original scope. Give it a date and a clear label so the client, crew, and person preparing the invoice can identify the same work.

PikeBuild has no change-order button. The record is a revised quote or a line on the agreement the client accepts. Use the document and signatures your job requires, and preserve the original accepted record. For the client acceptance step, see construction quote software that lets clients accept on their phone.

Tie the addition to your remodel payment schedule explicitly. Write the amount and the milestone when it becomes due. Avoid “we’ll settle up at the end,” especially when several extras may accumulate.

Handle a no without turning it into an argument

A price sent before work gives the homeowner a real choice. They may keep the original cabinet layout once they see the cost. That is a useful outcome: you haven’t spent money on work they don’t want at that price.

If they say, “But you’re already here,” explain the remaining work:

“Being here saves a separate visit. The price still includes the material, the modification, and putting everything back. We can keep the original layout if you’d rather leave this out.”

If you choose to include a small extra at no charge, describe that specific extra in writing as included at no additional cost. Make the gift deliberate and bounded. It should not leave the next request’s price unclear.

If you already did the extra

Stop adding more unpriced work. Gather the original scope, requests, photos, receipts, and time records. Separate clearly approved additions from requests whose price was never agreed.

Then have the conversation before sending a surprise final invoice:

“I completed these additions without confirming the price first. I should have brought the cost to you before starting. Here’s the work and the cost breakdown so we can discuss it.”

Don’t label an unapproved amount “approved,” backdate a document, or assume a later signature will resolve a disagreement. Record whatever resolution you reach accurately.

For the next request, keep the boundary simple enough to use while standing in the kitchen: a description, a price, and acceptance before your crew starts.

Sources

• CSLB: Learn About Home Improvement Contracts supports the California-specific written change-order requirement.
• PikeBuild: Client acceptance on a phone explains the related quote acceptance workflow.

For another client-approval boundary, see AI on a leash.