How to Price a Change Order (Without Losing Money)

Every contractor has been there: the client asks for a change halfway through the project, you quote a number off the top of your head, and three weeks later you realize you lost money on the deal. Pricing a change order is one of the most important skills in construction, yet most contractors never learn a structured approach. This guide will walk you through exactly how to price a change order so you protect your margins and keep the project moving forward.

Why Pricing a Change Order Is Different from Bidding

When you bid a project, you have time. You can review plans, get supplier quotes, calculate labor hours, and add your markup carefully. A change order rarely gives you that luxury. The client wants an answer now, work needs to happen this week, and the longer you take to price it, the more pressure builds.

This time pressure is exactly why contractors undercharge on change orders. They estimate from memory instead of calculating from data. They forget to include overhead. They feel awkward adding markup to a small scope item. The result is consistent: change orders become the least profitable work on the job.

The solution is to treat change order pricing with the same discipline you bring to your original bid. You need a repeatable system. If you are new to writing change orders, start there first, then come back here to nail the pricing.

The Cost Components of a Change Order

Every change order price should account for five cost categories. Missing even one of them means you are subsidizing the client's change with your own profit.

Materials

List every material the change requires, including quantities and current supplier pricing. Do not use the material prices from your original bid. Suppliers adjust prices regularly, and small-quantity orders often cost more per unit than the bulk pricing you may have received months ago. Add sales tax if applicable. If a material requires a special order or expedited shipping, include that cost as a separate line item so the client understands why the price is what it is.

Labor

Calculate the actual labor hours needed, not a rough guess. Consider the skill level required: a journeyman electrician costs more per hour than an apprentice. Factor in mobilization time if the crew needs to come back to the site specifically for this work. Include any overtime that may be necessary to keep the project on schedule. Your labor rate should reflect your fully burdened cost, meaning wages plus payroll taxes, workers' compensation insurance, benefits, and any union contributions.

Equipment

If the change requires specialized equipment, whether rented or owned, include it. This covers everything from a rented scissor lift to the wear on your own tools. For owned equipment, use an hourly or daily rate that accounts for depreciation, maintenance, and fuel. Delivery and pickup charges for rentals should be listed separately.

Overhead

This is the cost that most contractors forget. Every change order consumes administrative time: drafting the proposal, communicating with the client, coordinating with suppliers, updating the schedule, and managing the additional scope. Your office rent, insurance, vehicle costs, software subscriptions, and administrative salaries all contribute to overhead. A standard approach is to apply an overhead percentage, typically between 10% and 20% of direct costs, depending on the size and complexity of the change.

Profit (Markup)

Profit is not a bonus. It is the reason you are in business. After covering all costs and overhead, your markup is what allows you to grow, handle slow months, invest in equipment, and build reserves. Skipping markup on change orders is the fastest way to run a busy company that makes no money.

How to Calculate Your Markup

Markup percentages vary by trade, region, and project type, but here is a general framework. Most contractors apply a combined overhead and profit markup of 15% to 30% on top of direct costs. Some break it into two separate line items: for example, 15% overhead and 10% profit.

For residential projects, markups tend to be higher (20% to 35%) because the volume of each change is smaller and the administrative burden per dollar is greater. For commercial projects, markups are often defined in the contract itself, sometimes capped at 15% for the general contractor and 10% for subcontractors.

Check your contract before pricing. Many contracts specify the allowable markup on change orders. If yours does, you must follow it, but make sure your overhead percentage is realistic within that constraint. If the contract caps your combined markup at 15%, you need to ensure your overhead allocation is lean and your direct costs are accurately captured.

Common Pricing Mistakes Contractors Make

Estimating from memory. Your memory of what something costs is almost always wrong. Look up current material prices. Calculate labor hours based on production rates, not gut feel. The five minutes you spend checking real numbers will save you hundreds or thousands of dollars.

Forgetting indirect costs. The change order itself takes time to write, negotiate, and manage. If the change delays the project, there may be extended general conditions costs. If it requires rework of already-completed work, that demolition and disposal must be included.

Giving verbal quotes. A verbal price is an invitation for a dispute. Always put the price in writing with a line-item breakdown. This protects you and gives the client confidence that the price is fair.

Waiving markup on small changes. Small changes add up fast. If you waive your markup on every $500 change order and process twenty of them over a project, you just gave away $2,000 to $3,000 in profit. Treat every change order the same way, regardless of size.

Not accounting for schedule impact. If a change extends the project by a week, you have a week of additional supervision, insurance, equipment rental, and site costs. These are real costs that belong in the change order price.

Using a Rate Card to Speed Up Pricing

The best way to price change orders quickly and accurately is to build a rate card before the project starts. A rate card is a pre-agreed list of labor rates, equipment rates, and markup percentages that both parties accept at the beginning of the contract.

With a rate card in place, pricing a change order becomes a simple math exercise: hours times rate, plus materials, plus markup. There is no negotiation, no back-and-forth, and no delay. The client already agreed to your rates, so approval is faster and disputes are rare.

If you are a subcontractor, proposing a rate card to the general contractor before the project starts shows professionalism and makes the GC's life easier when changes inevitably arise.

MyChangeOrder lets you save a rate card to your profile so every change order you create automatically pulls in your pre-set labor and equipment rates. You can try it free and see how much time it saves on your next project.

Price It Right, Every Time

Change orders are a normal part of construction. They are not a nuisance, they are an opportunity to deliver additional value and earn fair compensation for your work. The contractors who struggle with change orders are the ones who treat pricing as an afterthought.

Build your rate card. Break every change into its cost components. Apply your markup consistently. Put it in writing. Get it signed before you start work. That is the formula for staying profitable on every change order, no matter the size.