Plain answer
Why does so much extra work never make it onto the bill?
Because the extra work is agreed in a rush and never written down. A word on site, a phone call, a "yes, go ahead" in a text. The work gets done, the job moves on, and by the time the invoice is drafted weeks later nobody is sure what was extra and what was priced. Labour and materials your firm has already paid for quietly go out for free. An AI agent that keeps every call, email and message on the record keeps a record of the extras too, so they are easier to bill and the invoice matches the work you actually did.
The quiet leak
Where do variations go missing?
A variation rarely goes missing at the end of a job. It goes missing at the start. The client's contact asks for the socket moved, the extra riser, the second visit, and it is easier to say yes and crack on than to stop and write it up. The person who agreed it moves to another site. The fitter who did it remembers doing it, not what was said about paying for it.
So the paper trail never starts, and an invoice can only bill what someone can point to. When the final bill is drafted, the extras that survive are the ones somebody happened to write down. The rest are gone, and with them the margin on work that was done properly, on time, by your own people.
The answer is not asking busy people to remember more. It is making the record happen automatically, so agreeing the work and recording it become the same moment.
What it changes
What does an AI agent change?
Ryku answers a firm's phone, email, chat and social, and keeps everything on the record. For variations, that means:
Every call, email and message the agent handles is logged against the job at the time, not written up from memory that night.
The moment an instruction lands, it drafts the short confirmation email, so the client has "as discussed, this is extra" in writing while everyone still remembers agreeing it.
It keeps a list of the agreed extras on each job, so whoever drafts the invoice sees them instead of hunting for them.
When the client asks why a line is on the bill, the record of who asked for what, and when, is there to refer back to.
The options, compared
Catching variations: memory, paperwork, or Ryku.
| Relying on memory | Diary, spreadsheets and WhatsApp | An AI agent (Ryku) | |
|---|---|---|---|
| Instruction on the record | Sometimes | If someone writes it up that night | Every call, email and message, at the time |
| Confirmation to the client | Rarely | When someone gets to it | Drafted the moment the instruction lands |
| Extras visible at invoicing | Whatever anyone remembers | If the spreadsheet is current | A list of extras, per job |
| Cost | Free, until the bill is short | Your evenings | A flat monthly fee |
Where the limits are
What will it not decide for you?
It will not price the variation. What the extra work is worth stays with you and your quantity surveyor. The agent's job is to make sure the work is on the record, so there is something to price.
It will not argue with your client. It drafts confirmations and keeps the record straight. Conversations that need judgement, or a relationship, stay with your people.
It will not guess. It works from the information you give it and the record of the job, so what it says about a variation is what was actually said and sent.
Frequently asked
The questions firms ask first.
Most of our variations are agreed verbally on site. How does that get recorded?
Anything that comes through a call, email or message the agent handles is on the record automatically. For something agreed face to face, a quick call or message to your own agent puts it on the job's record, which is faster than writing it up that night.
Does it decide what to charge for a variation?
No. Pricing stays with you. It makes sure the work is visible when the bill is drafted, so nothing ships for free by accident.
Will the client see the confirmations?
Yes, that is the point. A short note at the time confirming the work is in addition to the quoted works is what stops the conversation when the final bill lands.
How do I try it?
Build an agent on your own firm at construction.ryku.ai and hear how it answers before you commit to anything.
Start
Bill the job you actually built.
Ryku keeps every instruction, call and message on the record, drafts the confirmations, and keeps a list of the extras on every job. Build your firm's agent and hear it answer, before you commit to anything.
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