Change order control on commercial jobs: keeping the number from running away

A property manager called us a couple of years back, partway through a tenant build-out that was not ours. The job was three weeks from turnover and the change order total had crept to nearly a fifth of the original contract. When we asked to see the log, there was no log. There was a folder of emails, a few napkin sketches, and a stack of verbal okays that nobody could quite reconstruct. The owner could not say which dollars came from things they chose and which came from things the building forced on them. That is not a pricing problem. That is a control problem.

Change orders are not the enemy. Every commercial job of any size will have some. The enemy is the change order you cannot see coming, cannot price, and cannot trace. When the cumulative number runs away, it almost never happens in one big surprise. It happens in a hundred small, undocumented decisions that nobody added up until it was too late.

Start with scope, because that is where most change orders are born

Most runaway change orders are not really change orders. They are arguments about what the contract included in the first place. If the scope is vague, every other person reads it the way that suits them, and the gaps surface as change orders later.

A tight scope of work is the single best change order defense you have. Before signing, you want the proposal to say plainly what is in, what is out, and what is carried as an allowance. "Site work included" is not scope. "Site work assumes normal soil to four feet, excludes rock and undocumented caliche removal" is scope. The second version tells you exactly where the risk lives.

On Borderplex commercial work, the scope lines that quietly cause the most change orders are:

• Site and earthwork. Caliche is the great unknown out here. A scope that does not state its soil assumption is a change order waiting to be written.
• Mechanical sizing. A system sized for a mild design day will not be the system you need for summers well over a hundred degrees. If the basis is not stated, expect a change.
• Exterior finishes. Stucco, block, and metal panel pricing swings hard with finish level and color. A base assumption that does not match a tenant brand standard comes back as a change order.
• Tenant-specific work. On a shell that has a tenant coming, the line between landlord scope and tenant scope is where dollars get lost. Spell it out.

Get the scope right and you have a clean baseline. Without a baseline, you cannot even tell what counts as a change.

Two kinds of change orders, and why you should never mix them

When a change order shows up, the first question is not "how much." It is "why." There are really only two answers, and they should never share a line.

An owner-driven change is a choice. The owner or their tenant decided to add, upgrade, or alter something after the contract was priced. Moving a demising wall, upgrading storefront glazing, adding data drops, switching to a nicer floor. These are normal and usually welcome. They are also the owner's cost, plainly, because the owner chose them.

A discovered condition is something nobody could have priced because nobody could see it. Undocumented caliche where the boring logs promised soil. A buried utility that is not on any as-built. Rot or failed framing behind a wall on a renovation. These are not anyone's "fault" in the everyday sense. Who carries the cost depends on the contract and on what the bid documents represented, which is exactly why you want them flagged separately.

When a contractor lumps both kinds onto one undifferentiated change order, the owner loses the ability to understand their own budget. Keep them split. The owner-driven column shows what your decisions cost. The discovered-conditions column shows what the building cost you. That separation is the difference between a budget you understand and a number that just went up.

Pricing has to be transparent or the whole system breaks

A change order with a lump-sum number and no breakdown is not a price. It is an ask. On a disciplined commercial job, every change order should arrive with its work shown.

That means labor hours and rate, material quantities and unit cost, subcontractor quotes attached where a sub is involved, and the markup stated as a percentage you agreed to in the contract, not invented per change. When the math is visible, you can check it, question it, and approve it with confidence. When it is a single number, all you can do is trust or fight.

Two things to lock down in the contract before any of this comes up:

1. The markup on changes. Agree the overhead and profit percentage for change order work up front, in the contract. Negotiating markup on every change, mid-job, under schedule pressure, favors whoever is more comfortable with conflict. Set it once.
2. How time is handled. A change can cost schedule even when it does not cost much money. The change order should state its schedule impact in days, so added time does not become an invisible cost that shows up as a missed turnover date.

Transparent pricing is not about distrust. It is what lets a busy owner approve a change in an afternoon instead of stalling the job for a week.

The approval workflow: nothing moves without a signature

This is where most jobs lose control, and it is the easiest part to fix. The rule is simple and it is not negotiable on a well-run commercial project: no extra work begins until the change order is approved in writing.

A clean workflow looks like this:

1. A change is identified, by the field, the owner, the architect, or a sub.
2. The contractor prices it, itemized, with a schedule impact, and tags it owner-driven or discovered condition.
3. The owner or their authorized representative reviews and signs, or asks questions and then signs.
4. Only then does the work proceed, and the change goes on the log.

The failure mode is the field shortcut. A superintendent and a sub agree to something at seven in the morning to keep the crew moving, the work gets done, and the paperwork chases it weeks later with no agreed price. That is how the property manager from the opening ended up with a folder of okays and no idea what she owed. Verbal approvals feel efficient in the moment and cost a fortune in the reconciliation. Decide up front who on the owner's side can sign, and hold the line that nothing extra happens without it.

Keep a log, and make the running total impossible to ignore

The last piece is the simplest and the most ignored. Keep a change order log, and keep it current.

A real log lists every change in order, numbered, dated, with its amount, its category, its approval status, and a running cumulative total against the original contract. The point is that nobody is ever surprised by the aggregate. When the owner can see at a glance that approved changes have reached eight percent of contract, they can make decisions while there is still room to make them. When the log does not exist, the number only becomes visible at the end, when it is already spent.

Good commercial project management treats the change order log as a live document the owner can see any time, not a reconciliation done after the dust settles. It is the difference between steering and bracing for the bill.

Owners come to us tired of explaining their own project to their general contractor and tired of learning what a job cost only after it was already spent. Change order discipline is not paperwork for its own sake. It is what keeps you in control of your own number.

If you have a commercial project coming up, or one already underway where the change orders are starting to feel out of hand, send your plans or your contract to our estimating team for an honest read. We will tell you where the scope is thin and where the change orders are likely to hide, whether we end up doing the work or not.