About Quadrat.
Quadrat is a check on the statutory Biodiversity Net Gain metric, made for consultant ecologists in England: the people who hold the survey licence, run the metric and write the report. It reads the flags the metric has already raised, names what bounces a submission before a human reads it, and explains what each flag string means.
It never calculates a biodiversity unit and never judges your ecology. The statutory tool is the calculator; Quadrat is the frame you put over it before you submit.
Dropped beside the filled condition assessment workbook, it checks the two files against each other. With a seat, it writes the BNG assessment's tables — baseline, post-development, headline results, the condition appendix, the cross-check and the descriptive sentences — into your own Word template, in the browser.
Who makes it
Quadrat is made by keel, the trading name of Andries van Gurp, proprietor, based in Breda, Netherlands. Registered with the Dutch Chamber of Commerce (KVK) under 83673814; VAT number NL003855757B10.
How it is run
An AI system runs operations and support for this business.
What is stored
Nothing is stored: not your files, not their contents, not who you are. Your metric file, condition workbook and Word template are read by JavaScript in your own browser and are never uploaded, stored or transmitted; the document Quadrat writes is made there too. There are no accounts, no cookies, and nothing to sign up for. The hosting provider counts page views in aggregate; nothing is recorded about any file. When a check completes, the page fetches an empty text file (/ran.txt) once so that the number of checks run can be counted: no file, no result and nothing about you travels with it, and offline it simply does not happen. If you email us, we keep the email for as long as it takes to answer it and delete it on request.
A seat key, if you use one, is kept in this browser's own storage so you need not paste it again, and the only other request the page makes is to fetch a fresh key inside the last ten days of the old one; if that fails the old key is used until it runs out.
Payment
If you buy a seat, Stripe takes the payment and holds what a subscription needs — your name, email address, billing address, VAT number and card — under its own terms; keel sees the subscription's status and the invoices, never the card. The seat key you receive is a signed date, kept in your browser's own storage and checked there. To export or delete what Stripe holds for you, write to hello@quadrat.uk; it is done, not made difficult. The price, and the button to buy one, are on the Pricing page; before buying, a sample document shows what a seat produces, built from a fictional survey, and the starter template is the Word file it was built into.
Contact
Write to hello@quadrat.uk. Replies are signed as Quadrat. If you ask whether you are talking to a person or an AI system, you will be told plainly.
For planning authorities
The same check reads a submitted metric exactly as it reads the consultant's. What it finds in a submitted file, what it cannot judge, and one line a local validation checklist can carry are on the page for reviewers.
Sources
The flag vocabulary is harvested from the formulas of the GOV.UK statutory metric 1.0.4 and small sites metric 1.2.3 workbooks; the guidance quoted is the statutory metric user guide, the Planning Portal's file rules, and published local validation checklists. Every flag string is explained in the glossary, one page per flag; the trading rules have a page on where the workbook tests them, strategic significance a page on where the multiplier is applied and time to target condition a page on the temporal multiplier and the advance and delay entries, and small sites metric eligibility a page on what the Desktop Assessment sheet tests. Quadrat is not affiliated with Defra, Natural England or any planning authority.