How to quote a job so it does not get disputed later

A quote gets disputed for one of two reasons: the customer thought something was included that was not, or the customer thought something was being replaced that was reused. Almost every argument I have had about money in the gate and access-control trade comes down to one of those two, and both are fixed by the way the quote is written, not by anything that happens afterwards.

Why do quotes get disputed?

Not because the price was wrong. A customer who accepted a price accepted the price. The dispute arrives later, when the job is done and the invoice is bigger or the result is smaller than the picture in their head. That picture was built from the quote, and if the quote was a parts list with a total under it, the picture was theirs, not yours.

The two disputes I see most in my own trade:

The power run. The quote said "power run to operator". The customer pictured the fifty feet from the house to the gate. The gate was three hundred feet from the nearest panel, across a driveway, and the conduit and trench were most of the invoice. Nobody lied; nobody wrote the distance down.

Reuse. The quote said "gate operator replacement". The customer pictured everything new: operator, photo eyes, loop, keypad. The scope was the operator, reconnected to the existing safety devices, because the existing safety devices were fine. The invoice was right and the customer felt short-changed, which is worse than being wrong.

What structure stops that?

Three parts, in this order, on every quote I send.

1. Bundled lines that say what they include

Not a parts list. A line is the outcome, and its description is what it contains:

Gate operator replacement, furnished and installed. Includes: operator, mounting hardware, limit setup, safety device integration, programming, test.

Power run, 300 ft underground (example figure). Includes: 3/4 inch conduit, 12 AWG three-conductor, trenching, backfill, junction boxes, fittings.

The number on the power run line is the point. If the distance is on the line and the customer signs it, the distance is agreed. If the distance is wrong when I get there, that is a change order, and it is a change order about a number we both read.

The description goes in the catalog once, so the next operator replacement carries the same words. In Combdex the catalog item holds the description; picking the line puts the whole paragraph on the quote (writing a quote).

2. A reuse sentence

One line, in the labour section, that names what is being kept:

Reconnect existing limit switches, photo eyes and loop detector. Existing devices tested and reused.

"Reconnect existing" is a different job from "furnish and install", and the quote has to say which one it is, per device. If I am not sure a device will survive, I say so: "Existing photo eyes reused if they pass alignment test; replacement quoted separately if required."

3. Exclusions, in plain words

A short paragraph in the notes, not buried in the terms:

Not included: permits, concrete or masonry work, landscaping or asphalt repair after trenching, changes to the customer's network or router, removal of the old operator from site.

Every one of those is a thing a customer has asked me for after the job, and each time it was easier to point at the sentence than to explain why it costs more.

What about the money terms?

The deposit and the balance are part of the scope, because "when do I pay" is the third argument. On my quotes the deposit is instalment one, the balance is due on completion, and both print on the quote or invoice above the signature. A payment schedule for a bigger job (deposit, progress on rough-in, balance on commissioning) goes on the same quote as instalments, so the customer signs the schedule, not just the total.

In Combdex the deposit is instalment one of the quote's payment schedule. When an instalment is billed it becomes its own invoice, named as the quote printed it, so every payment traces back to a line the customer signed. The deposits and progress payments guide is the money half of this discipline.

How does the customer accept it?

On their phone. They open the link, read the lines, the reuse sentence, the exclusions and the schedule, tick the consent box and sign. Combdex locks the quote with the signature and the time, and nobody can edit a signed quote afterwards (sending, acceptance and signature). When somebody says "that is not what we agreed", the answer is a quote both of us can open, and the quote is the one they signed.

If they say yes on the phone, I press Mark accepted and the record says so. It is a weaker record than a signature, and I know it, so for anything with a trench in it I wait for the signature.

What do you do when the job changes?

Write it down before doing it. A second quote for anything the customer has to decide on ("the loop is dead; here is the price to replace it"), sent as a link and accepted the same way. The change order template is that second quote on one page. Lines added to the invoice for small things agreed on site, described the same way as the original lines, before the invoice is sent.

If the customer has not answered yet, the quote is still yours to change. In Combdex an open or expired quote offers Recall and edit, which returns it to draft in one press. Once it is signed, it is locked, and the change is a new quote.

What I never do is the verbal add-on. Every dispute I have had about an invoice being bigger than the quote was about a thing that was said at the gate and never written. The quote was fine; the addition had no quote.

A checklist before you press Send

• Every line describes an outcome and lists what it includes.
• Any distance, quantity or count that could be wrong is on the line.
• Every existing device the job touches is named as reused or replaced.
• The exclusions are a paragraph in the notes, in plain words.
• The deposit and the balance are on the quote.
• The expiry date is set, so nobody can accept an old price in six months (expiry, void and convert).
• You would be comfortable reading this quote aloud to the customer at the gate.

The last one is the real test. A quote you would be embarrassed to read aloud is a quote with something hidden in it, and hidden things are what get disputed.

Combdex is built around this structure: the catalog carries the descriptions, the quote carries the reuse line and the exclusions, the deposit is an instalment, and the signed quote is locked with the signature. The quotes app shows how each piece works, the quote template shows the layout on paper, and quoting software covers what to look for in the tool itself.