{"id":7126,"date":"2026-06-22T09:00:00","date_gmt":"2026-06-22T09:00:00","guid":{"rendered":"https:\/\/www.simplywise.com\/blog\/?p=7126"},"modified":"2026-06-22T18:28:35","modified_gmt":"2026-06-22T18:28:35","slug":"what-is-a-change-order-in-construction","status":"publish","type":"post","link":"https:\/\/www.simplywise.com\/blog\/what-is-a-change-order-in-construction\/","title":{"rendered":"What Is a Change Order in Construction? A Contractor Guide for 2026"},"content":{"rendered":"<p><!-- ============================================================\nYOAST META BLOCK\nFocus keyphrase: what is a change order in construction\nSEO title: What Is a Change Order in Construction? 2026 Guide\nMeta description: A change order in construction is a written, signed amendment to the contract that adjusts the scope, price, or schedule of a job. Full 2026 guide.\nSlug: what-is-a-change-order-in-construction\nCategory: How to Estimate (hub id 181)\nSEO title length: 51 chars (<60)\nMeta description length: 152 chars (<156)\n============================================================ --><br \/>\n<script>\ndocument.addEventListener('DOMContentLoaded', function() {\n  var sels = ['.entry-header','.page-header','article > h1:first-child','.entry-footer'];\n  sels.forEach(function(s){document.querySelectorAll(s).forEach(function(el){el.style.display='none';});});\n  var el = document.querySelector('.sw-a');\n  while (el && el !== document.body) {\n    el.style.maxWidth='100%'; el.style.width='100%'; el.style.padding='0'; el.style.margin='0';\n    el.style.float='none'; el.style.flex='0 0 100%';\n    el = el.parentElement;\n  }\n  document.body.style.marginTop='0'; document.body.style.paddingTop='0';\n});\n<\/script>\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@400;500;600;700;800&#038;display=swap\" rel=\"stylesheet\">\n<!-- 02 Article Template. 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*\/\n.sw-a__eyebrow,.sw-l__eyebrow,.eyebrow{color:#1d4ed8!important;}\n<\/style>\n<p><script>\n(function(){\n  try{\n    var b=document.body;\n    if(b && b.classList){b.classList.add('single-post');}\n  }catch(e){}\n})();\n<\/script><\/p>\n<article class=\"sw-a\">\n<section class=\"sw-a__hero\">\n<div class=\"sw-a__inner\">\n<div class=\"sw-a__breadcrumb\">Blog &nbsp;&rsaquo;&nbsp; How to Estimate<\/div>\n<p>    <span class=\"sw-a__eyebrow\">Contracts &middot; Estimating Guide<\/span><\/p>\n<h1>What Is a Change Order in Construction? A Contractor Guide for 2026<\/h1>\n<p class=\"sw-a__subtitle\">A change order in construction is a written, signed amendment to the original contract that adjusts the scope, price, or schedule of a job. This guide breaks down how change orders work, sourced from AIA Contract Documents, the U.S. Census Bureau, and the Bureau of Labor Statistics.<\/p>\n<div class=\"sw-a__meta\">\n      <span>SimplyWise<\/span><br \/>\n      <span class=\"sw-a__dot\"><\/span><br \/>\n      <span>Updated June 8, 2026<\/span><br \/>\n      <span class=\"sw-a__dot\"><\/span><br \/>\n      <span>14 min read<\/span>\n    <\/div>\n<figure class=\"sw-a__hero-figure\">\n      <img decoding=\"async\" src=\"https:\/\/images.unsplash.com\/photo-1603796846097-bee99e4a601f?w=1400&#038;h=700&#038;fit=crop&#038;q=80&#038;auto=format\" alt=\"Contractor and client reviewing a construction contract and change order paperwork on a job site\" loading=\"eager\"><br \/>\n    <\/figure>\n<\/p><\/div>\n<\/section>\n<section class=\"sw-a__tldr\">\n<div class=\"sw-a__tldr-box\">\n<div class=\"sw-a__tldr-label\">What a change order is, at a glance<\/div>\n<div class=\"sw-a__tldr-body\">\n<ol>\n<li>A change order is a written, signed amendment to a construction contract that modifies the work, the contract price, or the schedule.<\/li>\n<li>It is the legal mechanism for changing scope after both parties have already signed the original agreement.<\/li>\n<li>Per AIA Document G701, the owner, contractor, and architect all sign it, and it states the change in work, the adjustment in price, and the adjustment in time.<\/li>\n<li>Common triggers include client-requested upgrades, hidden site conditions, design errors, code requirements, and material substitutions.<\/li>\n<li>A clean change order protects margin by getting the price and scope agreed in writing before the extra work starts.<\/li>\n<li>Skipping the paperwork is the fastest way to do unpaid work, blow the schedule, or end up in a dispute.<\/li>\n<\/ol><\/div>\n<\/p><\/div>\n<\/section>\n<section class=\"sw-a__body\">\n<div class=\"sw-a__inner\">\n<h2>What is a change order in construction?<\/h2>\n<p>A change order in construction is a written, signed amendment to the original contract. It changes the scope of work, the contract price, the project schedule, or some combination of the three. In short, it is the formal document a contractor and client use to agree on a change after they have already signed the main agreement. The original contract sets the baseline. The change order modifies that baseline and becomes part of the contract once everyone signs. Furthermore, the most widely used standard form for this is <a href=\"https:\/\/aiacontracts.com\/documents\/g701-2017\" target=\"_blank\" rel=\"noopener\">AIA Document G701-2017, Change Order<\/a>, published by the American Institute of Architects. The AIA describes it as the document &#8220;used for implementing changes in the work agreed to by the owner, contractor, and architect.&#8221;<\/p>\n<p>Understanding what a change order in construction is matters because almost no job finishes exactly as it was drawn. Hidden rot shows up behind a wall. The client decides they want a nicer faucet. The inspector flags something the plans missed. As a result, the question is never whether the work will change, but how the change gets priced, documented, and approved. A clean change order answers all three. This 2026 guide walks through the definition and the parts of a change order. It also covers the common triggers, the step-by-step process, and the mistakes that cost contractors money. Every figure below traces to a named primary source: AIA Contract Documents, the <a href=\"https:\/\/www.census.gov\/construction\/c30\/c30index.html\" target=\"_blank\" rel=\"noopener\">U.S. Census Bureau<\/a>, and the <a href=\"https:\/\/www.bls.gov\/iag\/tgs\/iag23.htm\" target=\"_blank\" rel=\"noopener\">Bureau of Labor Statistics<\/a>.<\/p>\n<h2>The formal definition<\/h2>\n<p>The most authoritative definition of a change order comes from the AIA A201 General Conditions of the Contract for Construction. This standard contract framework runs across a large share of commercial and residential construction in the United States. Specifically, the AIA defines a change order as a written instrument that the owner, contractor, and architect sign. It states their agreement on three things: the change in the work, the amount of any adjustment in the contract sum, and the extent of any adjustment in the contract time. Therefore, a true change order is not a verbal handshake or a text message. It is a signed instrument that all three parties agree to in writing.<\/p>\n<p>The AIA G701-2017 form puts that definition into a one-page document. Per the official AIA instructions, the form is executed &#8220;when the Owner and Contractor, in concurrence with the Architect, have reached agreement on the change to be made in the Contract.&#8221; As a result, the signed G701 records three required elements. These are a description of the change, the adjustment to the contract sum or Guaranteed Maximum Price, and any adjustment to the contract time, including the date of substantial completion. This three-part structure is the core of every well-built change order, whether you use the AIA form or your own.<\/p>\n<div class=\"sw-a__callout\"><strong>Plain-English version:<\/strong> A change order says, in writing, &#8220;here is exactly what is changing, here is what it costs, here is how it moves the deadline, and here are the signatures of everyone who agreed to it.&#8221; Get those four things and you have a defensible change order.<\/div>\n<h2>Change order vs change directive vs contract amendment<\/h2>\n<p>Contractors often blur three related documents. They are not the same, and the difference matters when money is on the line. Specifically, a change order requires agreement from all parties before the work proceeds. A construction change directive (the AIA G714) lets the owner order a change before price and time are settled. A contract amendment is a broader modification to the agreement itself. Understanding which document you are working with tells you whether you have a binding price or just an instruction to start.<\/p>\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Document<\/th>\n<th scope=\"col\">Who agrees first<\/th>\n<th scope=\"col\">Price settled up front<\/th>\n<th scope=\"col\">Typical use<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Change order (AIA G701)<\/td>\n<td>Owner, contractor, and architect all sign before work proceeds<\/td>\n<td>Yes, price and time are agreed first<\/td>\n<td>Standard scope, price, or schedule change<\/td>\n<\/tr>\n<tr>\n<td>Construction change directive (AIA G714)<\/td>\n<td>Owner and architect direct the work; contractor price comes later<\/td>\n<td>No, used when price or time is not yet agreed<\/td>\n<td>Owner needs work to start before terms are finalized<\/td>\n<\/tr>\n<tr>\n<td>Contract amendment<\/td>\n<td>Owner and contractor<\/td>\n<td>Varies<\/td>\n<td>Broader changes to contract terms, not just a single scope item<\/td>\n<\/tr>\n<tr>\n<td>Field order or work order<\/td>\n<td>Often contractor or superintendent level<\/td>\n<td>Usually no cost change<\/td>\n<td>Minor clarification with no price or time impact<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The practical takeaway is that a construction change directive can put a contractor in the awkward position of doing work before the price is locked. Therefore, when you receive a directive rather than a signed change order, document your costs in real time and convert the directive into a signed change order as soon as the price is agreed. Otherwise you are absorbing risk the contract never asked you to take.<\/p>\n<h2>What goes in a change order<\/h2>\n<p>A complete change order leaves no room for interpretation. Specifically, every change order should carry a unique number, the project and contract reference, and a clear description of the change. It also needs the cost adjustment broken into materials and labor, the schedule impact in days, the revised contract total, and signature lines for each party. As a result, anyone reading it months later understands exactly what was agreed and why the contract total moved. The elements below are the standard fields, drawn from the structure of the AIA G701 form.<\/p>\n<h3>The required fields<\/h3>\n<ul>\n<li><strong>Change order number:<\/strong> sequential numbering (CO-001, CO-002) so the paper trail is easy to follow.<\/li>\n<li><strong>Project and contract reference:<\/strong> the job name, address, and the original contract date this change amends.<\/li>\n<li><strong>Description of the change:<\/strong> a specific, plain description of what is being added, removed, or modified, with reference to any revised drawings.<\/li>\n<li><strong>Cost breakdown:<\/strong> the price adjustment, ideally itemized into materials, labor, equipment, and markup so the client sees how the number was built.<\/li>\n<li><strong>Schedule impact:<\/strong> the number of days added to (or removed from) the contract time, and the revised completion date.<\/li>\n<li><strong>Revised contract sum:<\/strong> the original contract total, the net change from prior change orders, this change, and the new total.<\/li>\n<li><strong>Signatures and dates:<\/strong> sign-off from the owner and contractor (and architect where the contract requires it) before work proceeds.<\/li>\n<\/ul>\n<p>Furthermore, the cost breakdown is where most disputes are won or lost. A change order that says &#8220;extra work, $4,200&#8221; invites an argument. A change order that says &#8220;remove and replace 11 sheets of rotted 3\/4-inch subfloor at $185 per sheet supplied and installed, plus 6 hours of demolition labor at $65 per hour&#8221; does not. Therefore, itemize the math the same way you would itemize the original estimate.<\/p>\n<h2>Why change orders happen<\/h2>\n<p>Change orders are not a sign that something went wrong. They are a normal feature of building, because no set of plans survives contact with an actual job site untouched. The U.S. construction sector is enormous, which means the volume of contract changes flowing through it every day is enormous too. Specifically, the U.S. Census Bureau estimated total construction spending in the United States at a seasonally adjusted annual rate of $2,185.5 billion in March 2026. Residential construction alone ran at a seasonally adjusted annual rate of $929.7 billion. As a result, even a small percentage of contract value flowing through change orders represents a large amount of work that has to be documented correctly.<\/p>\n<h3>The common triggers<\/h3>\n<p>Most change orders trace back to one of a handful of root causes. Specifically, six categories dominate. These are client-requested changes, unforeseen site conditions, design or plan errors, code and permit requirements, material availability, and schedule-driven changes. Each one has a different owner and a different fairness conversation attached to it, which is exactly why getting the cause right on the change order matters.<\/p>\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Trigger<\/th>\n<th scope=\"col\">Example<\/th>\n<th scope=\"col\">Who usually owns the cost<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Client-requested change<\/td>\n<td>Owner upgrades to quartz countertops mid-job<\/td>\n<td>Client<\/td>\n<\/tr>\n<tr>\n<td>Unforeseen site condition<\/td>\n<td>Rotted framing or buried debris found during demolition<\/td>\n<td>Usually client, per contract language<\/td>\n<\/tr>\n<tr>\n<td>Design or plan error<\/td>\n<td>Plans miss a required beam or conflict between trades<\/td>\n<td>Often the design party or owner<\/td>\n<\/tr>\n<tr>\n<td>Code or permit requirement<\/td>\n<td>Inspector requires an added egress or upgraded wiring<\/td>\n<td>Usually client, sometimes shared<\/td>\n<\/tr>\n<tr>\n<td>Material availability<\/td>\n<td>Specified product is discontinued, substitution required<\/td>\n<td>Depends on contract; document the swap<\/td>\n<\/tr>\n<tr>\n<td>Schedule-driven change<\/td>\n<td>Owner requests acceleration or overtime work<\/td>\n<td>Client<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>As a result, the cause line on a change order is not a formality. It frames the entire conversation about who pays. A client-requested upgrade is an easy yes. An unforeseen site condition depends on the contract&#8217;s allowance and exclusion language. That is why a strong original estimate names its assumptions clearly. Therefore, the better your original scope and exclusions, the cleaner your change orders.<\/p>\n<h2>The change order process, step by step<\/h2>\n<p>A change order is a small process, not a single document. Specifically, the work flows through six stages. These are identification, pricing, written documentation, client approval, execution, and final accounting. Following the same sequence every time is what keeps the paperwork ahead of the work instead of chasing it after the fact. The steps below are the workflow used by well-run residential and commercial operations.<\/p>\n<ol class=\"sw-a__steps\">\n<li>\n<h3>Identify the change and stop<\/h3>\n<p>The moment the scope changes, pause and name it. A client request, a buried surprise, a plan conflict, or an inspector&#8217;s note all qualify. Do not start the extra work on a verbal okay. The discipline of stopping at the trigger is what makes everything downstream clean.<\/p>\n<\/li>\n<li>\n<h3>Price the change accurately<\/h3>\n<p>Build the number the same way you built the original estimate: itemized materials, labor hours at your burdened rate, equipment, and markup. Furthermore, price the schedule impact in days, not just dollars. Lost time on one job is lost revenue on the next.<\/p>\n<\/li>\n<li>\n<h3>Document it in writing<\/h3>\n<p>Write the change order with the change order number, the description, the cost breakdown, the schedule impact, and the revised contract total. Reference any revised drawings. The written record is the document that protects you if the conversation is later disputed.<\/p>\n<\/li>\n<li>\n<h3>Get written approval before proceeding<\/h3>\n<p>Send the change order to the client and get a signature before the crew touches the work. As a result, the price and scope are locked before any labor or material cost is incurred. This single habit prevents the most common and most expensive change order failure.<\/p>\n<\/li>\n<li>\n<h3>Execute the approved work<\/h3>\n<p>With the signed change order in hand, the crew performs the work to the agreed scope. Track actual costs against the change order estimate so you learn whether your pricing held, the same way you would on the base contract.<\/p>\n<\/li>\n<li>\n<h3>Update the contract total and invoice<\/h3>\n<p>Roll the approved change order into the running contract total and bill it on the agreed schedule. Therefore, the final contract sum at closeout equals the original contract plus the net of every signed change order, with no surprises for either party.<\/p>\n<\/li>\n<\/ol>\n<div class=\"sw-a__callout\"><strong>The one rule that saves the most money:<\/strong> Never start change order work on a verbal yes. Get the signature first. A signed change order before the work begins is the difference between billable scope and a free upgrade you gave away.<\/div>\n<h2>Change order pricing methods<\/h2>\n<p>There is more than one way to price a change order, and the right method depends on how well the scope is known. Specifically, there are three common approaches. They are lump sum, unit price, and time and materials (also called cost plus). Each one shifts risk differently between the contractor and the client, so picking the right method up front avoids friction at billing time.<\/p>\n<h3>Lump sum<\/h3>\n<p>A lump sum change order quotes one fixed price for the whole change. As a result, it works best when the scope is fully known and measurable, such as adding a defined section of fence or a specified fixture. The contractor carries the risk if the work runs long, and keeps the upside if it runs short. Therefore, lump sum rewards accurate estimating and punishes vague scope.<\/p>\n<h3>Unit price<\/h3>\n<p>A unit price change order sets a price per unit and bills the actual quantity installed. Specifically, &#8220;decking replacement at $185 per sheet, actual count to be verified on site&#8221; is a unit price arrangement. As a result, unit pricing is the cleanest method when the type of work is known but the quantity is not, which is exactly the situation with hidden conditions like rotted framing or unknown sheet counts.<\/p>\n<h3>Time and materials<\/h3>\n<p>A time and materials change order bills actual labor hours at an agreed rate plus actual material cost plus an agreed markup. Furthermore, it is the right method when the scope is genuinely unknown at the start, such as exploratory demolition. The trade-off is that the client carries the cost risk, so set a not-to-exceed cap when you can to keep the client comfortable and the relationship intact.<\/p>\n<h2>What happens when you skip the paperwork<\/h2>\n<p>Skipping the change order is the single most expensive habit in the trades. Specifically, a contractor who does extra work on a verbal okay has no signed record of the scope, the price, or the schedule impact. A billing dispute then becomes a he-said, she-said with no document to point to. As a result, the contractor often eats the cost, gives away margin, or burns the client relationship fighting over it. The construction workforce is large enough that this plays out thousands of times a day. The Bureau of Labor Statistics reported construction industry employment at roughly 8.32 million workers in April 2026. A meaningful share of the disputes those workers and their employers face trace back to undocumented scope changes.<\/p>\n<p>Furthermore, undocumented change orders create three specific problems. They erode margin, because work done without a signed price is hard to bill and easy to discount. They blow the schedule, because added scope with no agreed time extension makes the contractor look late on a deadline they never actually agreed to. And they invite disputes, because a signed change order is the cleanest evidence of agreement and its absence is the cleanest evidence of nothing. Therefore, the paperwork is not bureaucracy. It is the contractor&#8217;s protection.<\/p>\n<h2>How SimplyWise speeds up change order pricing<\/h2>\n<p>The slowest part of a change order is usually the pricing, not the signature. Specifically, a contractor standing in front of a wall of rotted framing has to scope the fix, count the materials, and build the labor number. All while the job waits, they also have to produce a clean breakdown the client will sign. As a result, the faster and more accurately you can price the change, the faster you get the signature and get back to work. That is the part SimplyWise was built to compress.<\/p>\n<p><a href=\"https:\/\/www.simplywise.com\/cost-estimator\/\" target=\"_blank\" rel=\"noopener\">SimplyWise Cost Estimator<\/a> uses photo-to-estimate intelligence to turn a job site photo into a sourced material list and labor breakdown in seconds. Furthermore, the LiDAR room scanning feature measures the space directly from your phone, so the quantities behind the change order are accurate, not guessed. The output becomes a branded PDF quote you can present to the client on the spot. That is exactly the kind of itemized, defensible document a strong change order needs. The SimplyWise app also bundles Receipts and Expenses tracking and Mileage tracking, so the cost records behind every change order stay organized for tax time. SimplyWise is an estimating and quoting tool rather than a full field-service platform, and it is purpose-built for the pricing and documentation that change orders live and die on.<\/p>\n<p>SimplyWise Cost Estimator is <strong>free to try<\/strong>, with no credit card, then from $29.99\/mo after a 7-day trial. Build your next change order with the photo-to-estimate workflow and compare the output against your own pricing. The math should match within a tight margin, and the time you save scales with every change order you write.<\/p>\n<h2>Sources<\/h2>\n<ul>\n<li><a href=\"https:\/\/aiacontracts.com\/documents\/g701-2017\" target=\"_blank\" rel=\"noopener\">AIA Contract Documents, G701-2017 Change Order<\/a> and the <a href=\"https:\/\/help.aiacontracts.com\/hc\/en-us\/articles\/1500009322061-instructions-g701-2017-change-order\" target=\"_blank\" rel=\"noopener\">official G701-2017 instructions<\/a>: definition of a change order, the three required elements, and which parties sign.<\/li>\n<li><a href=\"https:\/\/www.census.gov\/construction\/c30\/c30index.html\" target=\"_blank\" rel=\"noopener\">U.S. Census Bureau, Monthly Construction Spending<\/a> (release dated May 7, 2026): total construction spending of $2,185.5 billion and residential construction of $929.7 billion, both seasonally adjusted annual rates for March 2026.<\/li>\n<li><a href=\"https:\/\/www.bls.gov\/iag\/tgs\/iag23.htm\" target=\"_blank\" rel=\"noopener\">U.S. Bureau of Labor Statistics, Construction (NAICS 23)<\/a> and the Current Employment Statistics program: construction industry employment of roughly 8.32 million workers, April 2026 preliminary.<\/li>\n<\/ul><\/div>\n<\/section>\n<section class=\"sw-a__pull\">\n<blockquote><p>\n    A signed change order before the work begins is the difference between billable scope and a free upgrade. The paperwork is not bureaucracy. It is the only thing standing between your margin and a dispute.\n  <\/p><\/blockquote>\n<p>  <cite>SimplyWise Editorial<\/cite><br \/>\n<\/section>\n<section class=\"sw-a__faq\">\n<h2>Frequently asked questions about change orders in construction<\/h2>\n<div class=\"sw-a__faq-list\">\n<h3 class=\"sw-a__faq-cat\">Definition and basics<\/h3>\n<details>\n<summary>What is a change order in construction?<\/summary>\n<div class=\"sw-a__faq-answer\">\n<p>A change order in construction is a written, signed amendment to the original contract that adjusts the scope of work, the contract price, the schedule, or some combination of the three. It is the formal mechanism for changing a job after both parties have already signed the main agreement. Per AIA Document G701, the owner, contractor, and architect sign it, and it states the change in work, the adjustment in contract price, and the adjustment in contract time.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>Who signs a change order?<\/summary>\n<div class=\"sw-a__faq-answer\">\n<p>On a project using the AIA G701 form, the owner, the contractor, and the architect all sign the change order. On smaller residential jobs without an architect, the owner and the contractor sign. The key point is that every party with authority over the contract agrees in writing before the changed work proceeds. A change order is not binding until the required signatures are in place.<\/p>\n<\/p><\/div>\n<\/details>\n<h3 class=\"sw-a__faq-cat\">Process and pricing<\/h3>\n<details>\n<summary>What is the difference between a change order and a change directive?<\/summary>\n<div class=\"sw-a__faq-answer\">\n<p>A change order requires all parties to agree on the work, the price, and the schedule before the change proceeds. A construction change directive (AIA G714) lets the owner order a change to begin before the price and time are settled, with those terms negotiated afterward. If you receive a directive rather than a signed change order, track your actual costs in real time and convert it into a signed change order as soon as the price is agreed, so you are not absorbing risk the contract never assigned to you.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>How do you price a change order?<\/summary>\n<div class=\"sw-a__faq-answer\">\n<p>Price a change order using one of three methods: lump sum (one fixed price, best when the scope is fully known), unit price (a price per unit billed at actual quantity, best when the type of work is known but the quantity is not), or time and materials (actual labor plus materials plus markup, best when the scope is genuinely unknown). Build the number with itemized materials, labor at your burdened rate, equipment, and markup, and always include the schedule impact in days, not just dollars.<\/p>\n<\/p><\/div>\n<\/details>\n<h3 class=\"sw-a__faq-cat\">Risk and money<\/h3>\n<details>\n<summary>What happens if you do extra work without a signed change order?<\/summary>\n<div class=\"sw-a__faq-answer\">\n<p>If you do extra work on a verbal okay, you have no signed record of the scope, price, or schedule impact, which turns any billing dispute into a he-said, she-said with no document to point to. The contractor usually ends up eating the cost, discounting the work, or damaging the client relationship fighting over it. Undocumented changes also blow the schedule, because added scope with no agreed time extension makes you look late on a deadline you never actually agreed to. Always get the signature before the work begins.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>Can a client refuse to pay a change order?<\/summary>\n<div class=\"sw-a__faq-answer\">\n<p>A client can dispute a change order, which is exactly why the signed document matters. A change order signed before the work proceeds is strong evidence of agreement on the scope and price, and it is hard to contest. Work performed without a signed change order is far easier for a client to refuse, because there is no written record of what was agreed. The cleanest protection is to itemize the cost breakdown and get the signature in writing before the crew starts the changed work.<\/p>\n<\/p><\/div>\n<\/details><\/div>\n<\/section>\n<section class=\"sw-a__finalcta\">\n  <span class=\"sw-a__eyebrow\">Price changes faster<\/span><\/p>\n<h2>Price your next change order in seconds, not hours.<\/h2>\n<p>Stop guessing the quantities behind a change order. SimplyWise Cost Estimator turns a job site photo into a sourced material list and labor breakdown, then prints a branded PDF quote the client can sign on the spot. Free to try, no credit card.<\/p>\n<div class=\"sw-a__cta-buttons\">\n    <a class=\"sw-a__btn\" href=\"https:\/\/swcostestimator.app.link\/ce-ai\" target=\"_blank\" rel=\"noopener\">Try SimplyWise Cost Estimator, free<\/a><\/p>\n<\/div>\n<\/section>\n<\/article>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Article\",\n  \"headline\": \"What Is a Change Order in Construction? A Contractor Guide for 2026\",\n  \"description\": \"A change order in construction is a written, signed amendment to the contract that adjusts the scope, price, or schedule of a job. 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Itemize the cost breakdown and get the signature in writing before the crew starts.\"}}\n  ]\n}\n<\/script><\/p>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"BreadcrumbList\",\n  \"itemListElement\": [\n    {\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/www.simplywise.com\/\"},\n    {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Blog\", \"item\": \"https:\/\/www.simplywise.com\/blog\/\"},\n    {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"How to Estimate\", \"item\": \"https:\/\/www.simplywise.com\/blog\/category\/how-to-estimate\/\"},\n    {\"@type\": \"ListItem\", \"position\": 4, \"name\": \"What Is a Change Order in Construction?\", \"item\": \"https:\/\/www.simplywise.com\/blog\/what-is-a-change-order-in-construction\/\"}\n  ]\n}\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Blog &nbsp;&rsaquo;&nbsp; How to Estimate Contracts &middot; Estimating Guide What Is a Change Order in Construction? A Contractor Guide for 2026 A change order in construction is a written, signed amendment to the original contract that adjusts the scope, price, or schedule of a job. This guide breaks down how change orders work, sourced from [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"what is a change order in construction","_yoast_wpseo_title":"What Is a Change Order in Construction? 2026 Guide","_yoast_wpseo_metadesc":"A change order in construction is a written, signed amendment to the contract that adjusts the scope, price, or schedule of a job. Full 2026 guide.","_yoast_wpseo_linkdex":"78","_yoast_wpseo_content_score":"90","inline_featured_image":false,"footnotes":""},"categories":[181],"tags":[],"class_list":["post-7126","post","type-post","status-publish","format-standard","hentry","category-how-to-estimate"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What Is a Change Order in Construction? 2026 Guide<\/title>\n<meta name=\"description\" content=\"A change order in construction is a written, signed amendment to the contract that adjusts the scope, price, or schedule of a job. 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