What is a variation order?
A variation order (VO) is any change to the works you signed for: something added, removed or changed. It can come from you (“can we add a shelf?”) or from the site (“the wall is uneven, we need extra plastering”).
CaseTrust's standard renovation contract requires cost variations to be agreed in writing, and the CCCS fair trading guide says firms shouldn't supply goods or services you didn't agree to.
Why VOs add up so fast
- Each change looks small on its own
- Decisions are made quickly on site, often by WhatsApp
- Prices aren't always given before the work is done
- Vague items in the main quote (“lump sum”, “TBC”) turn into VOs later
The best way to cut VOs is a clear main quote. Every “TBC” you settle before signing is one less surprise later.
Common sources of VOs
| Source | How to prevent it |
|---|---|
| Extra power points and lights | Walk through each room with a furniture plan before signing |
| Tile or laminate upgrades above the allowance | Choose actual materials before signing, or ask the upgrade price |
| Extra carpentry | Finalise storage needs early |
| Uneven walls or floors, hidden pipes | Ask the ID to inspect and price likely extras upfront |
| Changing your mind mid-project | Lock decisions by a date, and stick to it |
A simple VO system
- Nothing starts without a written price. Ask for the VO price on WhatsApp or email at least.
- Sign or confirm each VO before the work starts
- Number every VO (VO1, VO2…) so nothing gets lost
- Keep a running total against your buffer
- Agree how VOs are paid: usually added to the next progress payment
A VO log you can copy
| VO no. | Date | What changed | Price | Confirmed by | Running total |
|---|---|---|---|---|---|
| VO1 | |||||
| VO2 | |||||
| VO3 |
When the running total reaches your buffer, stop and review before agreeing to anything else. Related: setting your buffer.
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