What is Change Order?
Change order explained in plain English. Learn what a change order contract is, how to create one, why it's essential for contractors and freelancers, and how to avoid scope creep.
What Is a Change Order?
A change order is a formal, written amendment to an existing contract that modifies a portion of the original scope of work — typically adjusting what work will be performed, how much it will cost, and when it will be completed. It's the professional mechanism for accommodating client-requested changes without undermining the integrity of the original agreement. In construction, change orders are routine — almost every project above a certain size encounters changes due to unforeseen conditions, client requests, or design revisions. In freelance and professional services, change orders serve the same purpose: they're the formal tool for saying "yes, I'll do this additional work, and here's what it will cost and take." The cardinal rule of change orders: never perform additional work without a signed change order. Without it, you're relying on the goodwill of the client to pay you for work outside the original scope — and goodwill isn't legally binding.
When to Use a Change Order
You should issue a change order whenever: - Client requests work not in the original contract - Project scope expands or contracts - Site conditions require a different approach than planned - Materials or specifications change - Timeline needs to be extended or accelerated - Budget needs to be reallocated between line items
What a Change Order Form Should Include
A well-designed change order includes: Header: - Project name and location - Original contract date and value - Change order number (sequential) Change Description: - Detailed description of what is being added, removed, or modified - Before and after specifications if applicable Cost Impact: - Additional labor cost (hours × rate) - Additional material cost - Additional subcontractor cost - Total change order value (can be positive or negative) Schedule Impact: - Additional calendar days needed - New estimated completion date Revised Contract Summary: - Original contract value - Net change (this change order) - New revised contract value Signatures: - Client signature and date (authorization) - Contractor/service provider signature and date
Example of a Change Order
A freelance web developer has a $8,000 contract to build a 5-page website. During development, the client asks for three additional pages and a custom contact form with database integration. Change Order #1: - Original contract: $8,000 (5 pages, template contact form) - Change: Add 3 pages ($1,200) + custom database contact form ($2,000) - Total change order value: +$3,200 - New contract value: $11,200 - Timeline impact: +5 business days - Client signs → Work proceeds on the expanded scope Without this change order, the developer would have spent $3,200 worth of additional time without compensation.
Change Order vs. Scope Creep
| Change Order | Scope Creep | |---|---| | Formal written agreement | Informal, undocumented expansion | | Client approves cost and timeline impact | Client assumes it's included in original price | | Protected — you're paid for extra work | Unprotected — you absorb the cost | | Maintains professional boundaries | Erodes profitability and relationship | Scope creep is what happens when additional requests pile up without formal change orders. By the end of the project, you've done $5,000 worth of extra work you won't be paid for. Change orders are the antidote.
Change Order Best Practices
1. Create a template — have a standard change order form ready before projects start 2. Respond quickly — issue the change order before starting the new work 3. Be specific — vague change order descriptions create disputes later 4. Price it fairly — clients are more likely to sign if the price is reasonable 5. Keep a log — track all change orders on a project register 6. Revise the total contract value — update the overall contract total each time a change order is signed
How It Relates to Invoicing and Business
Change orders directly affect your invoicing. When a change order is signed, the additional amount becomes part of the contract value — and should be invoiced either at project completion or through milestone billing. Never invoice the original contract amount and assume the change order will be paid separately without explicit agreement. Related reading: - Scope Creep: How to Prevent It → - Scope of Work: Define What's Included → - Freelance Contract: Protect Your Business → Key Takeaways: 1. A change order formally modifies the original contract scope, cost, and timeline 2. Never perform additional work without a signed change order 3. Include: description, cost impact, timeline impact, and both parties' signatures 4. Change orders prevent scope creep from eating into your profitability 5. Keep a running log of all change orders on a project Stop doing free work — use change orders — Try Eonebill Free