Retention calculator
Estimate retained value, release timing and how much cash is trapped across practical completion and defects liability.
CADSNAP for UK construction
Free QS calculators that expose the money stuck in your contracts.
Retention, payment notice, adjudication, bond and project margin checks for contractors, builders and QS teams. Built as a practical tool first, and a high-intent lead engine second.
14QS tools
0API keys needed
24hlead route
JCTRetention checks
HGCRANotice timing
28dAdjudication view
BTLContract value signal
The free tools are the front door.
Each calculator solves a specific construction pain point and tags the lead by urgency, contract size and likely offer route.
Payment notice checker
Validate the structure and timing risk around payment notices, pay less notices and suspension rights.
Adjudication timeline
Map the 28-day path and understand how quickly a payment dispute can turn operational.
Bond comparison
Compare cash retention against bond structures so the contractor sees capital impact clearly.
Sectional completion
Track multi-section practical completion, retention release and exposure by phase.
Project margin check
Turn contract value, material exposure and overhead into a quick signal for sales, finance and website upsell.
Live demo calculator
Retention exposure check
Use this as the first calculator pattern. It gives instant value now and can later connect to CADSNAP's backend.
Result
Your cash risk signal
This output is an estimate only. It is designed to start a better commercial conversation, not replace professional QS/legal advice.
Total retained
£12,500
Released at PC£6,250
Held after PC£6,250
Monthly cash drag£521
Intent score50
Want this as a branded calculator on your construction website?
ATTOH can turn this into a lead capture tool for your own site, with CRM routing, quote forms and follow-up automation.
Every calculator result has a revenue route.
This is the Trojan horse model: give value first, then route the right buyer to the right ATTOH offer.
01
Free QS tool
The visitor gets a useful result without speaking to sales.
02
Intent capture
Contract size, role and pain point tell us what they likely need.
03
CRM route
High-intent leads go to same-day follow-up. Lower intent enters nurture.
04
Paid outcome
Website build, CADSNAP paid, finance support, R&D or partner intro.
Why construction first?
Construction buyers already understand contract pain, cash flow delays and project risk. A calculator that reveals trapped cash is more persuasive than another generic agency landing page.
Why ATTOH wins here?
We can build the public website, the calculator, the CRM path and the sector-specific follow-up system. The website stops being a brochure and becomes a commercial asset.
Start with the calculator. Sell the whole system.
CADSNAP is the first Snap landing page pattern. Once the backend is production-ready, this page becomes the commercial wrapper for calculators, demos, paid plans and partner revenue.