---
title: "AI for construction companies UK"
description: "Most AI sold to contractors chases leads. The margin is set when a job is measured and priced. One job, 63 lines at £98,214.72, published in full."
canonical: https://agmm.co.uk/industries/construction/
updated: 2026-09-16
updated_basis: the date the page itself states
publisher: AGMM (https://agmm.co.uk/about/agmm.json)
lang: en-GB
---

AGMM / Industries / Construction

# AI for construction companies: where the margin actually goes.

Almost everything sold to contractors under the word AI answers the enquiry faster. None of it touches the step where the money is decided: the measure and the price. AGMM is an [AI consultancy](https://agmm.co.uk/ai-consultancy/) that starts there, then follows the margin through site records, variations and subcontractor packages.

By [Sam Wall](https://agmm.co.uk/about/sam-wall/) and [Adam Gillett](https://agmm.co.uk/about/adam-gillett/) · Checked on 16 September 2026

Greater Manchester / UK and international delivery

Two papers from the work. Demonstration with sample documents. In the Audit we draw your real lines.

Photo filed to the job

**Job**: Oakfield Road extension

**Taken**: 13 Oct, 14:22

**Where**: Roof structure, north side

**Note**: Steel bearing seated before the beam is loaded

What we can prove, and what it proves

## What can you check, and what does it not prove?

The nearest thing you can inspect today is how we run our own business. One of our knowledge bases holds the whole business written down, and every system in it is drawn on Inside AGMM, department by department.

It is here because a contractor needs the same discipline: a record for every job, a variation that is written down, and a bill that can be audited line by line. The paper beside this text is the kind of bill that discipline produces, with sample rates.

It proves the standard we build to, and nothing about your rates or your margin. We will not stretch it that far.

Bill of quantities Rear extension, draft

| Item | Qty | Rate | Amount |
| --- | --- | --- | --- |
| Excavate trench | 14.6 | £48 | £700.80 |
| Concrete foundation | 9.8 | £210 | £2,058.00 |
| Cavity wall | 52.3 | £112 | £5,857.60 |
| Flat roof deck | 24.0 | £96 | £2,304.00 |
| Section subtotal | £10,920.40 |  |  |

Demonstration with sample rates.

*Demonstration. A sample priced bill with sample rates, not a client job.*

The gap in this market

## Why is everyone selling faster lead chasing when the margin is in the pricing?

Because lead chasing is easy to sell and easy to demonstrate. A sixty-second callback is a clean before and after, and the software is nearly a commodity. It is also useful, and further down we say when we would build it.

But a contractor rarely loses money because an enquiry was answered in an hour instead of ten minutes. A contractor loses money because a quantity was measured optimistically, a rate was last reviewed two price rises ago, preliminaries were carried at a percentage nobody defends, or a variation was agreed on site and never priced. All of that sits between enquiry and invoice, in the part of the process almost no AI supplier goes near, because it requires knowing what a bill of quantities is.

AGMM starts there, because pricing carries the largest number and because a bill that can be audited line by line is the standard we build to.

Measurement and rates

## Can software price a job?

It can hold the measure, apply your rates consistently and produce a bill a quantity surveyor can audit line by line. That is narrower than the usual claim and more useful. Arithmetic was never the hard part of estimating. The hard parts are that the measure has to be right, the rates have to be yours and current, and the assumptions have to be visible to whoever checks the job.

What a system takes off a person: re-typing quantities, applying the same rate the same way every time, carrying preliminaries and overhead recovery by a rule rather than a feeling, keeping a copy of every quote sent, and producing both documents.

What it should not take: the judgement. Whether this ground is worse than it looks, whether this programme is achievable in March. Those stay with your estimator, and a good system makes them explicit inputs rather than something buried in a rate.

The build side sits on [quoting and estimating software](https://agmm.co.uk/services/quoting-and-estimating-software/) .

The processes, in order

## Which processes does a £1m to £50m contractor recognise?

These six carry the time and the margin in nearly every contracting business we talk to.

1. 01

   ### Enquiry to site visit

   Enquiries arrive by phone, by email, through a form and through somebody the estimator knows. Nobody can say at a glance which have been visited, which wait on a price and which died three weeks ago.
2. 02

   ### Measurement and takeoff

   Quantities come off drawings and a site visit into a spreadsheet one person understands. The measure is the asset, and it usually lives on one laptop in a file named after the client.
3. 03

   ### The bill of quantities, priced

   Rates from a rate book, a supplier, memory and the last similar job. This is where the margin is set, and it gets the least software help of any step.
4. 04

   ### Variations and what was agreed

   A change is agreed on site, sometimes verbally. Six weeks later the difference between a profitable job and an argument is whether anyone wrote it down, priced it and got it acknowledged.
5. 05

   ### Subcontractor packages and payment applications

   Packages sent, prices returned, work instructed, applications assessed, retention tracked. It is a document workflow, and in most firms it is an inbox.
6. 06

   ### Site diaries, records and handover

   Daily records, photographs, delivery notes, inspections and the operation and maintenance pack. A handover assembled at the end from six places costs more than one assembled as you go.

Now picture yours

## The same work, three ways.

Site records, variations, subcontractor packages and the priced bill, in four departments, drawn the way most contracting businesses run them, then organised, then agentified. Step through the real papers.

Operations Handover assembled as you go

Site diary Tue 13 Oct

**Site**: Rear extension, Oakfield Road

**Weather**: Dry, 11 degrees

**On site**: 8 operatives, 2 subcontractors

**Work**: Roof structure, first-fix electrics

Written on a phone, on site, as it happens.

1. Daily records captured as they happen.
2. Photographs and delivery notes filed to the job, not a camera roll.
3. Inspections recorded against what was built.
4. What was built, what changed and who decided.
5. Handover becomes an export.

1. **As it runs now**

   Site records in a notebook in the van, variations agreed on site and never written down, packages in six inboxes, and rates from memory and the last similar job.
2. **Organised**

   One record per job: the diary, every variation, every package and the measure, captured as it happens rather than assembled at handover.
3. **Agentified**

   The diary and photographs filed to the job, variations priced and acknowledged, packages compared side by side, and a priced bill your quantity surveyor can audit. Your people keep the judgement.

*A person decides Runs on its own Back with notes Demonstration. Sample documents, no client data. Timings compressed.*

Sequencing

## What should you automate first, and what does the £2,000 audit decide?

Not the most annoying thing. The thing with the largest number attached that you can change without stopping the business. In most firms that order comes out as: the record of what was agreed, then the priced bill, then the enquiry pipeline.

The record first, because it is cheap and stops losses immediately. Variations captured on site, priced, acknowledged and attached to the job is a small piece of software that settles arguments costing thousands. The priced bill second: largest number, but it needs your rates agreed first. The pipeline third, because winning more work at a rate that does not cover you is not a win.

1. **First** The record: variations captured, priced and acknowledged
2. **Second** The priced bill, once your rates are agreed
3. **Third** The enquiry pipeline

None of it needs your accounting system replaced. Leaving Sage or Xero in place and connecting to it is almost always the cheaper answer. Which of those is true for your business is what the [fourteen-day constraint audit](https://agmm.co.uk/ai-constraint-audit/) establishes, from your figures rather than a sector benchmark. Site and subcontractor scheduling is built with [scheduling software](https://agmm.co.uk/services/scheduling-and-booking-software/) ; the document chasing around packages and applications is [business process automation](https://agmm.co.uk/services/business-process-automation/) .

Records and standards

## What does the Building Safety Act expect you to keep?

For higher-risk buildings the Building Safety Act 2022 introduced a duty to keep and hand on a reliable information trail, the golden thread: what was designed, what was built, what changed and who decided. Whether it applies to your work is a question for your own advisers. This page is not compliance advice.

The software point is narrower and worth making. A business that assembles its records at handover, out of six inboxes and a camera roll, does expensive work twice and produces a weaker record. One whose site diaries, instructions, variations and inspections are captured as they happen already holds most of the trail, and handover becomes an export. That holds whether the regime applies or whether it is your client, your insurer or a purchaser asking.

A system that records the measure and the change as they occur can produce the document later. One that does not, cannot. The same holds for RICS new rules of measurement where a bill of quantities is in play.

The commercial terms

## What does it cost? The audit is £2,000, then a scoped build.

One published price and one invoice: £2,000 for a fourteen-day business-wide constraint audit, built around three sixty-minute sessions with the founders who would scope any build. You keep four documents whatever you decide: a constraint map, an AI opportunity map, an economic case per option, and a ranked order for spending.

A build is proposed afterwards in its own document, priced to the work. We publish no band for construction, because the number is set by how many pricing rules the system must hold and the state of the rates going into it. The audit fee is not credited against the build, so the recommendation is not paid for by the thing it recommends.

The full ladder is on [what it costs](https://agmm.co.uk/what-it-costs/) . What other UK firms publish, sourced and dated, is on [the AI consultancy cost comparison](https://agmm.co.uk/compare/ai-consultancy-cost-uk/) .

Boundaries

## What this does not include

- Hardware, licences and subscriptions. Those stay in your name and AGMM takes no margin.
- A rate book. If your rates are not written down, agreeing them is your work, and usually the real project.
- A guarantee of margin, hours saved or quotes won. AGMM cannot evidence one, so it does not sell one.
- Estimating accreditation, quantity surveying practice or any regulated opinion, including compliance sign-off under the Building Safety Act. We build information trails; the duty stays yours.
- The build itself. The £2,000 buys the diagnostic, and the fee is not deducted from a build.

Fit, stated plainly

## Who this is not for

- Sole traders and two-van firms. A business under roughly £1m of turnover rarely has a constraint big enough to repay a £2,000 audit. Off-the-shelf estimating software is the better answer, and we will say so.
- Anyone who wants a lead-chasing chatbot and nothing else. Other firms sell that more cheaply.
- A business whose rates exist only in one person’s head and who does not want that to change. Software cannot write down a judgement nobody will articulate.
- Anyone who needs work started next week, or who wants a free strategy document. The audit is fourteen days by design and the diagnostic is paid, deliberately.

If that is you, the straight answer is off-the-shelf estimating software or a cheaper tool, and the fit call will say so in thirty minutes rather than after an invoice.

The limits of our evidence

## What we cannot show you yet

Inside AGMM proves one thing: we can build and run systems that keep an auditable record of every run. It does not prove hours saved, a margin improvement, a win rate or a return on investment, and we will not imply that it does.

AGMM is a young company, incorporated in April 2025, and most of its work sits inside client systems we cannot publish. There are no construction case studies here because there are none we can link and check, and no percentage savings, because we have not measured them across enough jobs. Until that changes, we show you how we run our own business and say so plainly.

Across the business

## Which departments does this touch?

Estimating sits in Sales and Operations and delivery, but the margin leaks into Finance (variations and applications), Suppliers and procurement (subcontractor packages) and People (site records and training). The audit looks across all of them.

- [See every department we map in the audit](https://agmm.co.uk/services/#departments)
- [Quoting and estimating software for UK contractors](https://agmm.co.uk/learn/construction-quoting-software-compared/)
- [How to calculate the ROI of process automation](https://agmm.co.uk/learn/roi-of-automating-a-task/)

Questions before a call

## Frequently asked questions

**How are UK construction companies using AI in 2026?**: Most of what is sold to contractors under the word AI is front-office: chasing enquiries, following up quotes, collecting reviews, answering calls. Those are real problems and the tools work. Almost nobody addresses the money process: measurement, rates and the priced bill. That is where a contractor makes or loses a job, and where AGMM starts.

**Can software price a job?**: It can produce a measured, priced bill a quantity surveyor can audit line by line, which is a different claim from guessing a total. A bill of quantities is measured, not estimated, and a system that blurs that is selling a guess with a decimal point on it.

**Is my business too small for this?**: Probably, if you turn over under about £1m. The £2,000 audit and a scoped build make sense when a process costs enough each month to repay them, which in practice means roughly £1m to £50m of turnover and more than one person touching a quote. Below that, buy off-the-shelf estimating software, and we would rather say so on a free call than take the fee.

**What does it cost?**: The diagnostic is £2,000, fixed, over fourteen days, and it is the only price AGMM publishes. A build is priced afterwards in its own document, because the cost of a quoting system is set by how many rules it must hold and the state of the data, not by a band on a web page. The audit fee is not credited against the build. The full ladder is on the what it costs page.

**Can it use our own rates and our own margin?**: That is the point. A rate book that is not yours prices somebody else’s business. The work is getting your rates, preliminaries, overhead recovery and margin written down once, in a form the system applies consistently, so a quote reflects a decision rather than the mood of whoever priced it. Where those rules are not written down yet, writing them down is the part of the build that pays.

**Is a pricing system right for us?**: Not automatically. The audit decides whether you need a system that holds your measure and your rates, a smaller change to what you run, or nothing at all.

Start with the constraint

## Find what is worth changing before you fund a build.

Thirty minutes, free, nothing bought on the call. Bring one job you think you priced badly and we will say whether the problem is the measure, the rates or the process. The audit is £2,000 if it fits.

[Book the free fit call](https://agmm.co.uk/ai-constraint-audit/#book) [Call 0161 543 7189](tel:+441615437189)

Leadership and decisionsboard packs, management reporting, the calls only you can make Salespipeline, proposals and follow-up Marketingcampaigns, ads and the content line Operations and deliveryscheduling, hand-offs and getting the work outStart here Customer servicecomplaints, renewals and retention Financemonth-end close and cash collection Peoplehiring, onboarding and training staff Privacy and securitycompliance and data requests Customer dataone true record of every customer Knowledge and learninghow you do things, written down and taught Custom systemsthe parts generic software cannot fit Suppliers and procurementstock, suppliers and buying decisions

1. **Messy** Hand-offs lost in inboxes
2. **Organised** Each job has a clear owner and step
3. **Running** Routine hand-offs run; exceptions reach a person

***Lit: Operations and delivery, where the call starts.** The audit then looks across all twelve departments for constraints, weak points and money to save or earn.*

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Source: https://agmm.co.uk/industries/construction/ · AGMM, a UK AI consultancy · company facts: https://agmm.co.uk/about/agmm.json · every page: https://agmm.co.uk/llms.txt