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Change Order

A formal modification to construction scope, cost, or schedule.

Last updated: June 2026 · Reviewed by Neal Orozco & Rich DeMonica
Definition

Change Order — at a glance

A change order is a formal written modification to a construction contract — changing the scope of work, the cost, the schedule, or all three. Change orders are inevitable on most projects, but how they're managed is the difference between projects that finish on budget and projects that blow through every reserve.

Formula

How Change Order is calculated

Change Order Cost = Materials + Labor + GC Markup + Soft Cost Impacts
Materials
Cost of additional materials for the changed scope.
Labor
Cost of labor to perform the changed work.
GC Markup
GC overhead and profit on the change (typically 10–20%).
Soft Cost Impacts
Permitting, design revisions, schedule extensions.
In depth

What Change Order actually means in practice

Change orders happen for several reasons. Owner-requested changes — the borrower decides to upgrade finishes, add a feature, or modify the design. Unforeseen conditions — soil problems, hidden structural issues, code requirements not anticipated. Errors and omissions — the original drawings missed something. Scope clarifications — interpretation differences resolved through formal documentation.

A clean change order process documents what changed, cost impact (additional or credit), schedule impact, and required approvals. The GC submits the change order; the owner approves (with input from architect); the lender approves on construction loans where the change exceeds threshold amounts. Without that approval chain, work can proceed without funding — creating loan budget shortfalls.

Lender approval of change orders is critical on construction loans. Most loans require lender consent for change orders above a threshold (typically $10–25k on SFR, $50k+ on commercial). Below the threshold, the borrower can absorb minor changes into contingency. Above the threshold, the change has to be approved — including any required increase to the loan budget if contingency is exhausted.

Sophisticated borrowers manage change order risk proactively. Conservative initial budgeting with realistic contingency (8–10% on most projects). Tight scope and specifications upfront — vague drawings produce more change orders. Quick decisions on owner-requested changes — delays cost money. GC accountability for items in their original scope — change orders shouldn't be used to fix GC mistakes. The discipline pays off in projects that finish near budget.

Worked example

Worked example: change order impact

Original construction budget$485,000
Original contingency (8%)$38,800
Change orders during build:
CO #1: Soil remediation (unforeseen)$18,500
CO #2: Owner finish upgrades$22,000
CO #3: Code-required egress addition$8,500
CO #4: Owner-requested deck addition$14,500
Total change orders$63,500
Contingency available$38,800
Contingency exhausted; deficit$24,700
Borrower out-of-pocket$24,700
Result: Change orders exceeded contingency — borrower covers the gap or requests loan increase from lender.
Industry benchmarks

Change order management best practices

Realistic contingency
8–10% of hard costs at minimum.
Tight initial specifications
Detailed drawings reduce change orders.
Lender approval threshold
$10–25k SFR, $50k+ commercial.
Fast decision discipline
Delays compound costs.
LOWHIGH
Why it matters

The five things to remember about Change Order

Inevitable on most projects — manage them, don't eliminate them.
Cost components: materials + labor + GC markup + soft cost impacts.
Lender approval required above threshold amounts.
Contingency is the first line of defense against overruns.
Discipline on scope, specifications, and decisions limits CO volume.
Related terms

Connected concepts you should also know

FAQ

Common questions about Change Order

What is a change order in construction?

A formal written modification to the construction contract — changing scope, cost, schedule, or all three. Documents the change and the cost/schedule impact.

Who pays for change orders?

Depends on the cause. Owner-requested changes are borrower-funded. Unforeseen conditions and code requirements are typically borrower-funded (from contingency). GC errors and omissions are typically GC-funded unless the contract says otherwise.

Does my lender need to approve change orders?

On construction loans, yes — above the threshold amount specified in the loan documents (typically $10–25k on SFR, $50k+ on commercial). Below the threshold, the borrower can absorb into contingency without lender consent.

How do I minimize change orders?

Detailed initial design and specifications, conservative contingency budgeting, fast decisions on owner-requested changes, and GC accountability for items in their original scope.

What's a typical GC markup on change orders?

10–20% on top of materials and labor cost. Some contracts cap the markup; some are open-ended. Negotiate the change order markup structure in the original GC contract — not after change orders start.

Matrix Construction Lending

Construction loans with realistic change order processes

Matrix structures construction loans with change order approval processes that respect the project's pace. Reasonable thresholds, fast decisions.

See construction loans →
Reviewed by Neal Orozco & Rich DeMonica — Matrix Commercial Capital partners with 50+ years of combined experience in mortgage origination, commercial real estate lending, and construction finance. This page reflects current market conditions as of June 2026.