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Why quoting too fast costs more than it saves

Sales Updated 2026-10-02 quoting estimates scope

Short answer

A quote sent in ten minutes from memory is not a fast quote, it is a price attached to assumptions that were never written down, and the first surprise on site is where those assumptions get paid for. Slower is better here: visit the site, check what the last three comparable jobs actually involved, write every assumption down, and state plainly what the price excludes. A quote nobody can explain months later is a liability, because the customer remembers the number and has forgotten the conditions it came with.

A quote is not a price. It is a price attached to a list of assumptions about a job nobody has properly looked at yet. When those assumptions are written down, a quick quote is a good thing. When they live in one person's head, a ten-minute quote is a liability with a delivery date on it.

What is actually inside a quote written from memory?

A memory quote is not thin because the person is lazy. It is thin because nothing in the process forces the assumptions out. What you actually quoted was:

The average of the last few jobs like it, rather than this job
The assumption that access is normal, and that someone is home all day
The assumption that whatever is behind the wall, under the floor or above the ceiling is in reasonable order
The assumption that the parts price you remember is today's parts price
The assumption that the customer means the thing you think they mean
The complete absence of anything you did not think about

Each of those is a guess with a rand value attached to it. Some guesses are cheap. The expensive ones are the ones you never knew you were making.

What should happen between the enquiry and the number?

This is the whole sequence. It is not complicated, and none of it is quick enough to do properly in a parked car.

Step	What you do	Why it matters
1	Write the enquiry in one line: what they want, where, and when they want it	A quote built on a vague brief cannot be specific
2	Ask the three scoping questions	Turns "a new geyser" into a scope
3	Open your own records and look at the last three jobs of the same type	Turns a guess into a range you have actually seen
4	Check current supplier or trade pricing for the parts you are naming	Prices move, and your memory is at least six months old
5	Visit the site if anything is behind a wall, under a floor, above a ceiling or simply non-standard	Catches the thing that costs the margin
6	Write the assumptions down, then the inclusions, then the exclusions	Turns a price into a document that can be defended
7	Send it with an expiry date and a named contact	Makes a decision possible instead of a silence

Steps one to four are about half an hour at the office. Step five is an hour on site. Against a job that might be worth tens of thousands of rand, that is the cheapest insurance in the business.

What should a site visit actually capture?

Where the existing service or supply enters and leaves the building
The condition of everything you will have to cut into, open or remove
Access: is there parking, is there a ladder, is there working space, is there a dog
What is already there that you can reuse rather than replace
Anything the customer described that you have not yet laid eyes on
A photograph of each of the above, filed by date and job

Photographs are the cheapest record there is. Two minutes of photographs beat an hour of memory three months later, when the customer tells you the wall looked fine when you priced it.

What belongs on an exclusions list?

An exclusion is a thing you are not doing. Writing one feels awkward, because it reads as though you are trying to get out of work. It is the opposite: it is the only thing standing between you and a job that ends in an argument about what was included.

Making good of damage found only after work has started
Repairs to anything that was not visible at the time of the site visit
Hazardous or unknown material found in a wall, floor or ceiling
Painting, plastering, tiling or sealing, unless it is named
Removal, transport and disposal of spoil
Work behind a wall, under a floor or above a ceiling
Out-of-hours, weekend or public holiday working
Permits, authority fees and third-party inspections
Rectification of another contractor's work

Read that list back to yourself. If a line on it is a job you would normally absorb without arguing, take it off the list. An exclusion list that overstates is only useful once.

What three questions should you answer before you write any number?

The first two are free. The third is the one that protects the job.

What exactly has to be true for this price to be right? Every condition your price depends on — supply, condition, access, distance, timing.
What are they actually trying to achieve? A customer asking for a new geyser and a customer asking for hot water need two different quotes, and only one of them is about the geyser.
What would make this price wrong? Name the condition that, if it turned out to be true, changes the number.

Question three belongs in the quote. If the answer is "if the existing pipework turns out to be galvanised, that is a variation and I will price it separately", the customer has agreed to the risk before you carry it.

A quote you cannot explain in three sentences, six months later, is not a quote. It is a memory.

How long should a quote take, and does a slower quote win more work?

Speed is not the variable that wins work. Certainty is. A customer holding a quote with clear assumptions, clear inclusions and a named expiry date can approve it quickly, because there is nothing in it for them to be nervous about. A customer holding a ten-minute quote goes quiet for two weeks, because they cannot tell what is in it and they do not want to find out.

Measure two things separately:

Time to send = hours from enquiry received to quote sent
Time to decision = days from quote sent to a clear yes or a clear no

Try to shorten both. But do not shorten the first by skipping the steps that only show up later. The site visit and the exclusions block cost you half an hour now. Skipping them costs you the margin on the day, and quite possibly the customer for good.

Why is a quote nobody can explain later a problem?

Because a year later it is a number, a name and a feeling, and nobody can remember the conditions. Then the customer asks for the same work again at a different address, and quotes it from the old memory. Or a new person takes over the account and inherits a price with no reasoning attached to it. Or a variation comes up and there is no written trigger to point at, so it becomes a negotiation about whether the original price was fair.

Write the reasoning down next to the number. It costs two minutes and it is the difference between a price and a rumour.

Where do you start?

Pick your most common job type and find the last three you did it. Write down what each one actually involved, not what was quoted.
Build a one-page assumption sheet for that job type and use it every single time.
Add an exclusions block to your quote template, then edit it per job.
Stop quoting from memory. If you cannot name the three comparable jobs, you are guessing, and you should say so in the quote rather than hope.
Put an expiry date on every quote, so the decision has a deadline and somebody has a legitimate reason to write.

The companion checklist audits your last twenty quotes for the memory pattern, and the templates include a quote approval and assumption sheet, a site-visit capture sheet and an exclusions list you can edit per job.

Not sure where to start? Book a free 30-minute strategy session and we will name the one gap worth fixing first: https://agentcy.co.za/#book-audit

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