RetainRelease, the subcontractor's automated retention chaser that forces main contractors to release the 3-5% they're holding back
RetainRelease tracks every retention balance across every contract, sends the chase letters proven to release the cash, and files construction adjudication if a main contractor refuses.
The expensive part of a business idea is not having it. It is the time you spend finding out it does not work. This pack is that work, already done, with its sources left open.
UK·46 sources·8/9 checks·Verified 2 days ago
Sourced from lazyqs.co.uk, hayhills.com, theaccessgroup.com
1 / 80
One of the ideas that survived. 1,444 went through the filter and 94% died on cited evidence. Read what killed them.
One page of the evidence record13d41ccee9e96e2d
The most common slice is 5% of the subcontract sum, held until agreed milestones are reached.
Set by how big this idea could get and the market it targets, never by the size of the pack. See the ladder.
14-day money back, no questions asked
8 of 9 checks cleared
Instant download the moment you pay
The pack’s own model puts month one at 40× what the pack costs, and payback at 5 months. Every input behind that is sourced, and the workings are the fourth document.
The numbers are in the pack. Pricing mechanics and unit economics, every input sourced, and anything the research could not stand up is marked so.
Secure checkout via Stripe. A pack is evidence-backed research, not a promise of business success. See our refund policy.
What’s inside your pack
The moment you pay, you download the whole pack. 8 documents, no drip feed, no login.
your pack/8 documents
├──00_Executive_Summary.md
Executive SummaryThe opportunity on one page: what it is, what checked out, and what we do not claim.
├──01_Blueprint_BuildSpec.md
The Blueprint (Build Spec)What to build, in what order, on what stack. Includes the non-goals for v1 and what would kill this.
├──02_Marketing_Plan_GTM.md
The Go-To-Market PlanWhere your first customers come from. Named channels, the beachhead to start in, and the signals that say stop.
├──03_Operations_Plan.md
The Operations PlanHow it runs once someone pays. Delivery, capacity limits, the compliance you cannot skip, and where the manual work sits.
├──04_Financial_Model.md
The Financial ModelPricing and the numbers behind it. Anything we could not verify is marked missing, never made up.
├──05_First_Week_Checklist.md
First-Week ChecklistSix steps for days one to seven: confirm the buyer, size the smallest paid offer, pick one channel.
├──Marketing_Assets.md
Marketing AssetsLaunch copy you can send today: listing page, outreach, social. Claim-checked like the research.
└──QA_Report.md46 sources
The QA Report, with the receiptsEvery check this pack faced, each verdict, and a clickable source behind every claim.
8 plain-text documents in a zip, 5,000+ words. Yours to keep, edit, or paste anywhere. No login, no subscription.
Instant download
Could you run this?
Behind the research is a business somebody has to actually operate. Here is who they would be selling to, and how soon the first money arrives.
Mostly automated
MarketUKThe opportunity, its evidence and its economics are researched for this market. The pack itself is priced and sold in GBP.
Who paysUK subcontracting firms (typically 1-50 staff electricians, plumbers, bricklayers, joiners, groundworkers, plasterers, roofers) working on construction projects where main contractors hold retention. They are paid less per job than main contractors, are squeezed on margin, and have multiple live contracts with held-back cash they rarely chase.
How we tried to kill it
Each check is an attack, not a rubber stamp. An idea dies on the first check where cited evidence goes against it. This one cleared 8 of 9. Finding nothing is not the same as finding a green light; see how each check works on /how-it-works.
The 6 below run on every idea, whatever it is. This one's lane ran 3 more on top, for 9 in all.
Exactly what this pack covers, plus a blurred look at the document you receive.
RetainRelease, the subcontractor's automated retention chaser that forces main contractors to release the 3-5% they're holding back
01 · Blueprint / build spec
The most common slice is 5% of the subcontract sum, held until agreed milestones are reached.
Any party to a UK construction contract can refer a dispute to an independent adjudicator, who must usually decide within 28 days, and the decision must be honoured immediately while any further argument continues.
02 · Go-to-market plan
UK construction was measured at the lowest average margin in the world, 3.9%, in a 2021 study by Turner & Townsend.
Month 1 revenue
£1,975
LTV : CAC
10.9×
Payback
5 months
Unlocks the moment you buy
01Blueprint / build spec
02Go-to-market plan
03Operations plan
04Financial model (Python-computed from verified inputs)
A look inside
Real, sourced lines taken straight from the pack. Every source below is a live link: open one and check the claim before you buy.
Extract · evidence record
The most common slice is 5% of the subcontract sum, held until agreed milestones are reached.
Any party to a UK construction contract can refer a dispute to an independent adjudicator, who must usually decide within 28 days, and the decision must be honoured immediately while any further argument continues.
Set by how big this idea could get and the market it targets, never by the size of the pack. See the ladder.
14-day money back, no questions asked
8 of 9 checks cleared
Instant download the moment you pay
The pack’s own model puts month one at 40× what the pack costs, and payback at 5 months. Every input behind that is sourced, and the workings are the fourth document.
The numbers are in the pack. Pricing mechanics and unit economics, every input sourced, and anything the research could not stand up is marked so.
Secure checkout via Stripe. A pack is evidence-backed research, not a promise of business success. See our refund policy.