What Is It?
A variation order form, sometimes called a change order, is a short document used to record and authorise any change to the originally agreed scope or contract of a building job. It describes the change, identifies who requested it, sets out the cost impact (an addition or an omission), states any effect on the completion date, and provides space for the client to sign their approval. Once signed, it becomes a formal addition to the contract and the agreed basis for charging the extra work or crediting the omitted work.
About This Template
Almost every building job changes once it is underway. The client asks for an extra socket, decides on a different tile, adds a wall, or removes something from the original plan. Each of these is a variation, and the single biggest cause of payment disputes in the building trade is variations that were carried out without being agreed in writing. A variation order form fixes this. It records exactly what changed, who asked for it, what it adds to or takes off the price, how it affects the programme, and - crucially - it is signed by the client before the extra work starts. A builder who uses variation orders consistently almost never argues about the final bill.
When to Use
- When the client requests extra work that was not in the original quote, estimate, or contract
- When the client decides to remove or reduce something from the agreed scope, creating a credit
- When unforeseen site conditions are discovered that require additional work to put right
- When a specification changes - a different material, finish, fitting, or method to the one priced
- When a design change or revised drawing affects the work, cost, or programme already agreed
- Before any additional or changed work is actually carried out, so authorisation is always in advance
What to Include
- Project name, site address, client details, and the original contract or quote reference
- A unique variation number so each change can be tracked in sequence
- The date the variation was raised
- A clear description of the change to the scope or specification
- Who requested the variation (client, builder, architect, or arising from site conditions)
- The reason for the change
- The cost impact, shown clearly as an addition or an omission, with a breakdown of labour and materials
- Any effect on the completion date or programme, stated in days or a revised date
- The revised contract total once this variation is applied
- A statement that the work will not start until the form is signed and returned
- Client signature, printed name, and date authorising the variation
- Builder signature and date
Tips
Never start changed or extra work on a verbal request alone - a two-minute conversation becomes a costly dispute later. Get the variation form signed first, every time
Price each variation properly before presenting it - include labour, materials, plant, and a fair margin. Variations are not the place to undercharge to keep the client happy
Always state the time impact, even if it is zero. Clients often forget that extra work pushes the finish date, and a documented programme change protects you from late-completion claims
Number variations sequentially and keep a running revised contract total - this gives the client a transparent picture and makes the final account quick to reconcile
Record omissions as well as additions. If the client drops part of the job, a signed variation showing the credit demonstrates fair dealing and prevents arguments about what they were charged for
Why Getting Variations Signed Off Protects You
Variations are the most common flashpoint in building disputes, and almost every one of those disputes traces back to the same root cause: extra work that was carried out before it was agreed in writing. Understanding why a signed variation order matters will change how you run every job.
The problem with verbal variations is memory and incentive. When a client casually asks for "another couple of spotlights while you're at it", both of you may genuinely intend it to be a chargeable extra. But weeks later, when the final invoice lands, the client's memory of that conversation is hazy and their incentive is to believe it was included all along. You have no record, no agreed price, and no signature. In a small claims dispute, the burden is effectively on you to prove the extra was authorised - and a conversation on a dusty landing is almost impossible to prove.
A signed variation order removes the argument entirely. It is a contemporaneous written record, agreed by both parties, that says precisely what was changed, what it costs, and that the client approved it. It converts a "your word against mine" situation into a documented fact. When the final account is presented, every line is backed by a signed form the client has already seen and agreed.
Getting the signature before the work proceeds is the part builders most often skip and most often regret. Authorising a variation after the work is done invites the client to negotiate the price they already knew nothing about - or to refuse it altogether. Authorising it before means the client makes an informed decision with the cost and time impact in front of them. If they do not like the price, they can decline the change, and you have lost nothing. If they accept, you proceed with certainty.
Signed variations also protect your completion date. Building contracts and consumer expectations both assume the job finishes on time. Every extra item the client adds legitimately extends the programme, but clients rarely make that connection on their own. A variation order that records the time impact - even a single day - builds a documented, agreed timeline. If the client later complains the job overran, you can point to a stack of variations they signed, each one adding days they themselves requested.
Finally, consistent use of variation orders signals professionalism. Clients trust a builder who manages change transparently far more than one who springs a surprise bill at the end. Far from being awkward paperwork, presenting a tidy variation form for signature reassures the client that there will be no nasty shocks - which is exactly what most clients are anxious about.
