Change Orders: Why They Happen and How to Manage Them

What a Change Order Is

A change order is a written document that modifies the original construction contract — adding, removing, or changing scope, and adjusting the contract price and schedule accordingly. It's a formal amendment to the agreement between owner and contractor. In a well-run project, every change from the approved scope — no matter how small — goes through the change order process before work begins. In a poorly run project, changes get done verbally, pricing gets added to the final invoice, and disputes happen at closing.

Why Change Orders Happen

Change orders come from three places: owner decisions, unforeseen conditions, and design gaps. Owner decisions are the most straightforward — you changed your mind on tile, you decided you want the closet larger, you upgraded the appliance package. These happen on almost every project. Unforeseen conditions are things nobody could see before opening the walls: mold in a cavity that has to be remediated before drywall goes back, old galvanized plumbing that code won't allow to remain, a footer that doesn't sit where the drawings said it would. Design gaps are situations where the plans didn't fully resolve a condition — a detail that wasn't drawn, a conflict between structural and MEP that only became apparent during construction. Good pre-construction work reduces these but doesn't eliminate them.

What a Legitimate Change Order Looks Like

• A written description of the change — what is being added, removed, or modified
• The cost impact — additional cost or credit, broken down by labor and material
• The schedule impact — does this change add days to the project? If so, how many?
• Owner signature before work begins on the changed scope
• Updated running total of contract value after the change is approved

The Schedule Impact Gets Ignored Until It's Too Late

Most owners focus on the cost number in a change order and overlook the schedule impact. But schedule extensions have real costs. Every additional week of construction means another week of temporary living arrangements, mortgage payments, or carrying costs. It also extends the GC's general conditions — the project superintendent's time, temporary utilities, site security, and insurance premiums that accrue by the day. A change order that adds $8,000 of tile work and three weeks to the schedule has a true cost significantly above the $8,000 number on the change order form.

Pending Change Orders Are a Problem

A change order that sits unresolved — where the work has been done but the paperwork hasn't been executed — is a dispute waiting to happen. The longer a pending change order sits, the harder it is to price accurately and the easier it is for an owner to dispute. Work that happened six weeks ago is hard to document precisely. A contractor who lets change orders pile up unsigned is either disorganized or building a larger dispute to resolve at the end of the job. In either case, it's a problem. Insist that all change orders be executed before the work begins and that no unsigned pending items carry past two weeks.

The Change Order Setup (and How to Avoid It)

The change order setup is what happens when a contractor bids a project with intentional gaps — underpriced allowances, missing scope items, vague descriptions — that they know will generate change orders after the contract is signed. By the time the first major change order hits, the owner is committed. Construction has begun, the contractor has mobilized, and walking away means a dispute and lost momentum. The way to avoid this isn't to refuse all change orders — it's to start with a complete bid. Every allowance should be realistic. Every scope item should be named. Every exclusion should be listed. A bid that looks complete is much harder to exploit.

Watch for Contractors Who Never Issue Change Orders

An absence of change orders is not always a sign of a well-run project. Some contractors absorb changes quietly — adjusting material quality downward, skipping details that weren't explicitly specified, or deferring scope that should have been included. You won't know this happened until you're living in the house. Ask specifically: how do you document changes? What's your process when something unforeseen comes up? A contractor who can articulate a clear change order process is more trustworthy than one who says 'we'll figure it out.'

Your Rights in Florida

Florida's Construction Lien Law (Chapter 713) governs the relationship between owners and contractors on construction projects. Among other things, it requires that change orders be in writing when the contract requires it. Florida also allows contractors to file liens on property if they're not paid for work performed — including work done under a change order. Understanding that the lien process exists and how it works is part of being an informed owner. Before you sign a construction contract, read the payment schedule and understand what milestones trigger each payment. A construction attorney review of major contracts is inexpensive insurance on a $500,000+ project.