What changed in version 2
Version 1 scored this idea 78. The runbook then gained a required community sweep (Phase 1 Step 1b) with a hard 24-month freshness bar on community evidence and a resolution check on load-bearing stale complaints. Running those steps dropped the score to 63.
Two things caused the fall. The community sweep found no datable buyer complaint anywhere in the last two years. And the stale complaint that carried version 1's headline argument failed its resolution check. The verdict is still proceed to test, but it is now three points above the band boundary rather than eighteen.
01Verdict up front
The single strongest reason to proceed anyway: one dated, role-identified complaint from exactly the target buyer, and a manual pilot that costs nothing to run. A construction managing director at a 2 to 10 employee firm, on 25 March 2026, says an incumbent system "completely missed supplier invoices, or at best sent them across incorrectly". Against that, the £149 paid audit can be delivered by hand in five days, so the cost of finding out is a page and a fortnight rather than a build. The recommendation does not depart from the banding, but three findings need to be read before anyone acts on it.
02The idea as understood
Inputs
Supplier invoices, receipts, delivery notes, accepted quotes and the open job list.
Outputs
An exception queue (unmatched, changed, duplicated, unbilled) and a margin-at-risk report. Exceptions only, never an archive.
Deliberately excluded
No autonomous job allocation, markup, VAT or CIS treatment, accounting posting or customer billing. The owner approves every action.
Switching strategy
Keep every current tool. Start with 30 documents and five jobs, importing references rather than migrating records.
Commercial model as briefed: £149 audit, £350 to £750 setup, £149 to £249 per month, roughly £0.20 per document overage. Integrations: email and CSV first, read-only Xero or QuickBooks second, job-system connectors and approved write-back later.
Gaps in the brief: no geography stated (UK assumed); no distribution asset or existing audience stated; the buying role inside the firm is not named, so this report names one from evidence; and it is not stated whether margin-at-risk includes labour, which materially changes the build. This report scopes it to material and supplier cost only.
Prior work: the UK Trades and Construction AI Software Market Study (13 August 2026) in this repository is the origin of this brief and ranks the wedge first of eight at 95.3/100. It is treated as one INFERENCE signal; the incumbent prices it lists were re-checked against vendor pages before use, and only re-checked figures are scored.
03Buyer and trigger
Buyer
The owner or director of a material-heavy trade firm of roughly 3 to 20 staff (electrical, plumbing and heating, roofing, joinery, small building), or the office administrator or bookkeeper who reconciles the supplier account. The bookkeeper side is where the failure mode is described most precisely.
Trigger
The monthly supplier statement and payment run, when the merchant statement must be reconciled against invoices and delivery notes. Secondary trigger: invoicing a completed job and deciding what materials to bill.
Current workaround
For most of this market, not software. Peers describe pen and paper, Excel for larger jobs, and a job code in the merchant order reference. Where software is used it is a job system plus Xero or QuickBooks with Projects or tracking categories.
Consequence
Cost lands as a merchant lump sum rather than against the job, so job profitability is wrong. A cost that rose since the quote is found after the customer is invoiced. Material that was fitted is never billed. A silent leak, which is why it survives and why urgency scores low.
04Evidence log
Confidence: High = page fetched and read directly. Medium = search-mediated only, date unverified. Type: review aggregator, vendor page, institutional source, community platform, or prior AI synthesis. Institutional and vendor sources are judged on whether the page is current, not on when the content was first written. Community signals face a hard 24-month freshness bar and are excluded from scoring if undatable. Review signals older than 24 months are flagged and, where load-bearing, resolution-checked.
Scored signals
| # | Type | Source | Speaker | Behaviour observed | Date | Conf. |
|---|---|---|---|---|---|---|
| 1 | review | Capterra, Simpro review | Managing Director, construction, 2 to 10 employees | Implementation "was meant to reconcile with Xero however it completely missed supplier invoices, or at best sent them across incorrectly" | 25 Mar 2026 | High |
| 5 | vendor | iTrade guide article | Software vendor, UK trades | "Margin lives in the match ... margin at risk, whether through price creep, short delivery, or someone else's parts on your account"; "Materials get fitted and never billed" | Aug 2026 | High |
| 6 | vendor | Jelly blog article | Software vendor, UK hospitality | Nine invoice-processing failures including duplicate payments and no real-time price change alerts; "over 60% of invoice errors come from manual data entry". Exception detection already sells in an adjacent sector | 10 Jun 2026 | High |
| 7 | institutional | FMB and CIOB State of Trade H1 2025, 458 responses | Trade bodies | "75% of builders have seen material prices rise", 67% higher wages, 61% increased the prices they charge. Quote-to-actual drift is live | Pub. 2 Sep 2025 | High |
| 8 | institutional | BCIS insolvency tracker news | BCIS chief economist, Insolvency Service data | 3,805 construction firms insolvent in the year to June 2026; 309 in June, 16% of all in England and Wales; specialised construction the largest group at 173 | Pub. 17 Jul 2026 | High |
| 9 | vendor | Fergus supplier integrations page | Incumbent vendor | Supplier invoices "sent straight to Fergus, automatically importing line items and matching to the right jobs", split across jobs and phases; included in paid plans | Checked 17 Aug 2026 | High |
| 10 | vendor | Fergus UK pricing page | Incumbent vendor | Essentials from £39/month per company (manual supplier invoices); Professional from £45 adds automatic supplier integrations and purchase orders; £12 per timesheet user | Checked 17 Aug 2026 | High |
| 11 | review | Capterra UK, Fergus profile | Construction reviewer plus aggregator | 4.6 from 155 reviews, listed at £35 per user. "Integration with xero and suppliers works [r]easonably well" | 26 May 2025 | High |
| 12 | vendor | Planyard pricing page | Direct competitor | Purchase invoice OCR, budget versus actual, Xero and QuickBooks sync: $105 Essential, $158 Professional, $210 Ultimate per project manager per month; $43 support users | Checked 17 Aug 2026 | High |
| 13 | vendor | Planyard job costing article article | Direct competitor | Xero tracking dimensions limited across project, job, phase and location; option lists "balloon", reporting becomes "messy"; construction job costing is "driven by invoices and commitments ... not just time entries" | 10 Sep 2025, upd. 18 Feb 2026 | High |
| 14 | vendor | Lentune knowledge base | Direct competitor | Three-way match of supplier invoices against purchase orders inside Simpro; also Xero, Jobpac and Procore | Checked 17 Aug 2026 | High |
| 15 | inference | Prior internal research this repository | AI-assisted synthesis | Ranks the wedge first of eight at 95.3/100 under a different rubric; defines the £149 audit and £149 to £249 per month model; maps 20 incumbents | 13 Aug 2026 | Inference |
| 16 | community | Screwfix Community Forum site | UK trades community | Approximately 106,868 members. Used only as a channel-size figure for buyer reach, not as pain evidence | Current, unverified | Medium |
| 17 | community | UK Business Forums site | UK small business community | 277,200+ business owner members with a dedicated tradespeople area. Channel-size figure only | Current, unverified | Medium |
| 18 | vendor | Simpro Q1 2026 release announcement | Incumbent vendor | Release themed "More Profit Per Job": "tighter control over the details that impact profit", inventory "updating in real-time as materials are used on jobs". The required resolution check on stale signal 2 | Q1 2026 | Medium |
| 19 | vendor | EzzyBills for Simpro page | Direct competitor | AI invoice scanning with purchase-order matching into Simpro, including suppliers that use a single item code | Checked 17 Aug 2026 | Medium |
Signals demoted out of scoring in version 2: signal 2 (Capterra, Simpro, office administrator, Feb 2022), signal 3 (Software Advice, Simpro, undated), signal 4 (Capterra, Tradify, sole trader, Feb 2021) and the Jul 2018 Fergus fragment. All are older than 24 months or undatable. Signal 2 was load-bearing in version 1 and failed its resolution check against signal 18. They appear below as historical context only.
Community voice
Every community source below is fetch-blocked and undatable from search snippets, so all of it is historical context that may be resolved, and none of it fed a factor score. Reddit could not be reached at all: the search tool refuses the reddit.com domain, so the "Reddit plus one niche forum" requirement was met on the forum side only. This limitation is itself a finding, and it is the main reason pain evidence and urgency fell in version 2.
| Platform observed | What is discussed there | Promotional posting |
|---|---|---|
| Screwfix Community Forum | Job costing software, pricing up jobs, markups, software for running a small construction business, clients asking for copies of materials invoices | Not established; rules unchecked |
| Electricians Forums | "Anybody using Job Management Software?" (three pages), "Does anyone use a good job tracking software?", quotation and costing spreadsheets | Not established; rules unchecked |
| UK Business Forums | "What apps are trades using for quoting jobs now?", construction project management software, accounting alongside self-bookkeeping | Not established; rules unchecked |
| AccountingWEB Any Answers | Repeated "job costing software for a construction firm" questions from accountants serving trade clients | Professional community; pitching likely unwelcome |
| BuildHub | Self-builders and renovators, not trade firms | Explicitly forbids advertising: "no advertising of goods or services is allowed" |
| Could not be assessed | Not reachable by this agent |
The problem in buyers' own words
Historical, may be resolved. This is the language that should drive the smoke-test copy.
if you have a supplier invoice relating to more than one job, many systems can't handle it
(AccountingWEB Any Answers). The failure mode stated more precisely than any vendor states it, and the single most useful phrase found for smoke-test copy.checking for postings unallocated to jobs in the "No Name" column
(AccountingWEB, describing QuickBooks). "Unallocated postings" and "No Name column" are the buyer-side vocabulary for what this product calls an exception queue. It also means the report partly exists already, for free, inside QuickBooks.receipts of goods purchased not going to jobs all the time ... if you do not activate updates the actual cost is not recouped in invoicing
(Capterra, Simpro, office administrator, February 2022). Version 1's headline quote, now historical and resolution-checked.stage codes that are used as part of the order reference when ordering materials
(Screwfix Community). The free process fix, described by tradespeople as normal practice.- Software framed by whether
better tracking of materials ensures all charges are captured
(Electricians Forums). The benefit language the market already uses.
Notable objections heard
Historical, may be resolved, and all disconfirming.
stay away from software options unless tendering for multi-trade works like extensions
(Screwfix Community). Peers actively advising against the category.most tradespeople don't use mobile apps or software
(Screwfix Community), and Excel is described as the popular tool for breaking down costs on larger jobs.- Price anchoring in buyers' own words: simPRO Office quoted at
£104 per month
, common productsaround £45 per month
, basic systemsaround £50 a month
(Electricians Forums). Nobody in these threads discusses paying £149 to £249 per month for a monitoring layer. - Adoption is slow:
it typically takes 12-24 months to fully realize the benefits
(Electricians Forums). - A cancellation complaint: on cancelling, the account was deleted immediately, the paid month was lost and historical data became inaccessible (Electricians Forums). Relevant to how a data-holding product must behave.
Budget note. Roughly 70 minutes of searching across both versions, and 19 numbered signals plus the community sweep. Sources that refused automated fetching: community.screwfix.com (certificate failure), electriciansforums.net, ukbusinessforums.co.uk, accountingweb.co.uk, simprogroup.com, uk.trustpilot.com and fmb.org.uk (all 403), community.xero.com (DNS failure), apps.xero.com (timeout). reddit.com is refused by the search tool itself.
05Kill list
Ten findings, three severe. Findings 3, 4, 5, 8 and 9 are new in version 2 and came from the community sweep and the resolution check.
| Finding against the idea | Seriousness |
|---|---|
| The incumbent already claims to do exactly this, free inside a plan the buyer already pays for. Fergus auto-imports supplier invoices, matches line items to the right jobs and splits across jobs and phases, at £39 to £45 per month. That is a tenth of the proposed subscription. | High |
| Three live direct competitors already occupy the space. Planyard from $105 per project manager per month, Lentune's three-way match into Simpro and Xero, and EzzyBills' AI invoice scanning with purchase-order matching into Simpro. | High |
| The community sweep found peers advising against the whole category. Tradespeople tell each other to "stay away from software options unless tendering for multi-trade works", note that "most tradespeople don't use mobile apps or software", and recommend Excel. The prices they quote each other are £45 to £104 per month, well below the proposal. New in v2. | High |
| Part of the exception report already exists free inside QuickBooks. Accountants describe running Profit and Loss by Job and reading unallocated postings from the "No Name" column. The unmatched-cost half is a report a bookkeeper can already run. New in v2. | Med-high |
| The stale complaint that carried version 1 failed its resolution check. Simpro has since shipped a Q1 2026 release themed "More Profit Per Job" with real-time inventory updates as materials are used. The complaint may simply be fixed. New in v2. | Med-high |
| The pain is silent, so it may not be bought. No dated evidence anywhere, including four community platforms, of a UK trade firm quantifying its own leakage or searching for a fix. This is exactly why the £149 paid audit is the correct first offer: it converts an invisible problem into a number before asking for a subscription. | Medium |
| A free process fix exists and is already normal practice. Job or stage codes in the merchant order reference make materials tally to jobs and flag anything added in error. The counter is that this depends on every operative every time. | Medium |
| Financial data sensitivity raises the cost of the first yes. The offer exposes supplier pricing and margins to a stranger, and a community cancellation complaint (account deleted immediately, historical data lost) shows this market has been burned on data custody before. New in v2. | Medium |
| One relevant community explicitly forbids pitching and the others' rules are unchecked. BuildHub states "no advertising of goods or services is allowed"; AccountingWEB is a professional community where a pitch would likely be unwelcome. New in v2. | Medium |
| No corpses found. Searches for shut-down UK supplier-invoice-matching or job-costing products for trades across 2024 to 2026 found none: Fergus, Tradify, Simpro, Planyard, Lentune, EzzyBills and Buildxact all still trade. Nobody has burned publicly, and nobody has broken out. | Low |
Searches that returned nothing usable, recorded as required: no public churn or cancellation data for job-costing supplier-invoice modules; no dated thread of a UK trade owner explaining why they abandoned a job-costing tool for spreadsheets; no Reddit evidence of any kind, the domain being refused by the search tool; no published figure for the value of material cost leakage in UK trade firms; no dated community thread in the last 24 months describing an unmatched or unbilled supplier cost.
06Competitor and incumbent map
| Option | Price (checked 17 Aug 2026 unless noted) | What it does about this problem | What buyers complain about |
|---|---|---|---|
| Fergus | £39 Essentials, £45 Professional per month per company; £12 per timesheet user | Auto supplier invoice import, matching to jobs, splitting across jobs and phases | Job file management gaps; margins on materials "fiddly" at invoicing (2018, historical) |
| Simpro | Quote only; buyers quote each other roughly £104 per month for the Office package | Supplier invoices, purchase orders, job costing, Xero sync; Q1 2026 release themed "More Profit Per Job" | Only one complaint is in-window: supplier invoices missed or sent incorrectly to Xero (Mar 2026). Receipts not going to jobs (Feb 2022) is historical |
| Tradify | £34 to £44 per user per month (prior study; not re-verified) | Job costing, quoted versus actual, Xero and QuickBooks sync | Importing supplier statements against invoices and jobs "could be improved" (2021, historical) |
| Planyard | $105 to $210 per project manager per month | Purchase invoice OCR, approval, budget versus actual, forecast, Xero and QBO sync | Not established in this run |
| Lentune | Not published | Three-way match of invoices against purchase orders inside Simpro | Not established in this run |
| EzzyBills | Not established | AI invoice scanning with purchase-order matching into Simpro | Not established in this run |
| QuickBooks Projects | Inside a QuickBooks Online Plus or Advanced subscription | Job costing, and Profit and Loss by Job with unallocated postings visible in the "No Name" column | The unmatched-cost report largely exists here already, free to anyone who knows to run it |
| Xero Projects or tracking categories | Inside an existing Xero subscription | Bills assigned to a project, or every line tagged with job and cost code | Dimensions limited across project, job, phase and location; lists balloon; reporting messy |
| Dext or similar | Approx £25 to £30 per month, around 250 documents (Medium confidence) | Captures and codes the document | Does not answer which cost changed or was never recharged: the gap this product targets |
| Do nothing: merchant statement, Excel, job codes in the order reference, memory | Owner and administrator time | Monthly reconciliation; job codes at the merchant make materials tally and flag anything added in error | Cost lands as a merchant lump sum, not against the job. This is what most of the market actually does, and peers recommend it |
07Score breakdown
| Factor | Weight | v1 | v2 | Anchor met and justification |
|---|---|---|---|---|
| Pain evidence | 25 | 2 | 1 | After the freshness discipline, exactly one dated in-window buyer complaint survives (Mar 2026), and no speaker anywhere quantifies time or money. The community sweep across four platforms produced no datable complaint at all. Version 1's supporting complaints are older than 24 months, and the load-bearing one failed its resolution check. That is the weak anchor: occasional grumbles, no cost mentioned. Torn against 2; scored down per the tie-break. |
| Urgency | 20 | 2 | 1 | The strong anchor needs a cost, penalty or deadline on the day the problem occurs, and this leak is silent by construction. The sweep showed peers handling it with Excel, pen and paper, and job codes at the merchant, which is literally the weak anchor: an annoyance handled whenever convenient. The monthly statement run is real, which is why this was 2, but nothing shows anyone treating it as pressing. |
| Buyer reach | 20 | 2 | 2 | Unchanged, and better evidenced than before. Named channels with published figures exist and the sweep confirmed all four platforms actively discuss this problem, which is what the anchor really tests. It stays at 2 because the figures are search-mediated, the target slice is a minority within sole-trader-dominated communities, one relevant community explicitly forbids advertising, and the others' rules are unchecked. |
| Manual pilot | 20 | 3 | 3 | Strong anchor met without qualification. Thirty documents, five quotes and a job list returned as a checked leakage report in five working days is a spreadsheet, a PDF reader and attention. This is the factor that keeps the idea worth testing. |
| Price clue | 15 | 3 | 3 | Strong anchor met: verified spend at Fergus, Planyard, Dext and quote-only Simpro. These are vendor pricing pages, judged on currency rather than age, so the freshness bar does not touch them. The sweep corroborates the band from the buyer side (£45 to £104). Held at 3, but note that no evidence anywhere shows this buyer paying £149 to £249 per month for a monitoring layer. |
08Proposed test design
Offer
Lead with the buyers' own words: "Some of your supplier invoices cover more than one job. Which ones never reached a customer?" Send 30 supplier documents, five accepted quotes and your open job list. Within five working days you get a checked leakage report naming every cost with no job, every cost that moved since the quote, every duplicate and every material fitted but never billed, with the pound value of each. £149, credited against setup.
Copy note from the sweep
Use "unallocated", "not on a job" and "never charged out" rather than "exception queue" or "margin at risk". Pre-empt the two objections peers actually voice: that this is what Excel and a job code at the merchant are for, and that job software already claims to do it.
Commitment action
Pay the £149 and send the documents. The strongest commitment layer available, behavioural and paid. An application without payment and documents does not count. A free three-invoice sample check may be a step towards it, but only paid audits count against the gate.
First channel
Trade-focused accountants and bookkeepers who already see these firms' merchant statements. The sweep supports this and argues against forum-first: AccountingWEB shows accountants repeatedly asking how to solve exactly this, while trade forums show peers advising each other away from software. Any forum posting needs a per-community rules check first; BuildHub forbids advertising outright.
09Risks and unknowns
- The size of the leak is unmeasured, and now known to be undiscussed. No source across two versions and four community platforms quantifies material cost leakage for a UK trade firm, or shows one complaining about it in the last 24 months. If the typical leak is £200 a month, a £149 to £249 subscription cannot be justified.
- Willingness to pay is contradicted by the only buyer-side price anchors found. Peers quote each other £45 to £104 per month for full job systems. This is the primary commercial risk.
- The evidence base may be an artefact of what this agent can reach. Reddit is refused outright and every relevant forum 403s. The pain could be loudly and recently discussed in places that were simply invisible here. Anyone with forum accounts should spend an hour reading the named threads directly before accepting the pain and urgency scores; that single hour could move the score by 15 points in either direction.
- The complaint may already be fixed. Simpro shipped a 2026 release aimed at profit per job. If 30 documents from a current Fergus Professional or Simpro customer yield no exceptions, the wedge is dead for that segment, and the audit shows it in week one, cheaply.
- Part of the product is a free QuickBooks report. The paid version must earn its keep on changed-since-quote and never-recharged, which are the harder halves to compute.
- Trust and data sensitivity may suppress the commitment action, and this market has a recorded grievance about a vendor deleting an account and its history on cancellation. The application must record why anyone declines.
- False matches are commercially dangerous. Confidence thresholds, audit logs and owner approval are build requirements, not refinements, which raises the floor on build cost above what "medium build" implies.
- The £0.20 per document overage is untested and no evidence was found about document volumes at this firm size, so plan allowances cannot yet be set.
- The test will not settle: long-term retention, whether exception rules generalise beyond the first five firms' suppliers, whether merchant or job-system connectors are obtainable on reasonable terms, or whether the wedge works outside the UK.
10Recommendation and next step
11Decision log
| Date | Decision | Decided by | Reason |
|---|---|---|---|