Terms of service
Last updated: 13 August 2026. Applies to all use of
QS Takeoff ("the Service") at
qstakeoff.com.
1. Agreement
By registering an account or using the Service, you agree to these terms. If you do not agree, do not use the Service. These terms form a legally binding contract between you ("you", "the user") and the operator of the Service ("we", "us").
2. The Service
- The Service is provided "as is" and "as available", with no service-level commitments and no warranty of uninterrupted availability.
- Features may change, be added, or be removed as the Service evolves.
- We may temporarily or permanently discontinue the Service, or any feature of it. Where reasonably possible we'll give registered users at least 30 days' notice and an opportunity to export their data.
- The Service is currently free to use. We may introduce optional paid plans in future; if we do, section 3 applies and nothing will be charged without your explicit sign-up.
3. Paid plans, credits and billing (not currently offered)
No paid plans are currently offered and no payments are taken. The terms in this section apply only if and when an optional paid subscription ("Pro", metered in credits) is introduced. Payments would be processed by Stripe; we never see your card details.
- Subscription. Pro renews automatically each month until cancelled. You can cancel anytime, self-serve, from your account page (via the Stripe billing portal); Pro features remain active until the end of the period you've paid for. Prices would be shown clearly at the time of purchase; we'll give at least 14 days' notice of price changes, which take effect at your next renewal.
- Plan credits. Each renewal grants your plan's monthly credit allowance. Plan credits reset at each renewal and do not roll over.
- Top-up packs. Purchased credit packs are one-off payments. Pack credits roll over and expire 12 months after purchase (each new pack purchase extends the expiry of your whole pack balance). Pack credits survive cancellation of the subscription.
- Credit costs. Each AI detection consumes credits according to the model used, as shown in the app before you run it. If a detection fails before it reaches the AI model, the credits are refunded automatically.
- Refunds. If you're a consumer in the UK/EU you have a 14-day statutory cancellation right for the subscription; by running an AI detection within that period you request immediate performance and agree the cancellation right doesn't extend to credits already consumed. Otherwise, credits are non-refundable except where required by law or at our discretion - if something went wrong, contact us and we'll put it right.
- Failed payment. If a renewal payment fails, Stripe retries; if it still fails, your account reverts to the free plan (your projects and any pack credits are kept).
4. Your account
You're responsible for keeping your password and any access to your account secure. Tell us as soon as possible at if you suspect unauthorised access.
You must be at least 16 to register. By creating an account you confirm that the email address you provide is yours, and that the information you give is accurate.
You can delete your account at any time by emailing us. Account deletion permanently removes your saved projects from our database.
5. Acceptable use
You agree not to:
- Use the Service for any unlawful purpose.
- Upload, store or transmit content that infringes another party's intellectual property, breaches confidentiality, or contains malware.
- Attempt to compromise the Service's security, probe for vulnerabilities, or otherwise interfere with normal operation. Good-faith security research is welcome — please coordinate with us first.
- Use automated systems to access the Service in a way that places excessive load on it, or to scrape, harvest, or otherwise extract data from it beyond what the user interface allows.
- Resell or sublicense the Service without our written permission.
6. Your content and your projects
You retain all rights in the drawings, measurements, project data and any other content you create or upload using the Service ("Your Content"). PDF drawings themselves are processed entirely in your browser and are never uploaded to us; we never see them. The one exception is the optional Pro AI detection: when you explicitly run it, a rendered image of that page is transmitted to our AI provider solely to perform the detection you requested (see the privacy policy). You are responsible for ensuring that sending a drawing page for AI analysis is compatible with any confidentiality obligations attached to it.
For the take-off data you choose to save to your account, you grant us a limited, non-exclusive licence to host, store, transmit and back up that content solely for the purpose of providing the Service to you.
You're responsible for ensuring you have the right to use any drawings you process with the Service, including respecting any third-party copyright, NDA or confidentiality obligations attached to those drawings.
7. Our content
The Service itself — its code, design, branding, documentation and any included content — is owned by us or our licensors. You are granted a personal, non-exclusive, revocable licence to use the Service for its intended purpose. You may not copy, modify, reverse-engineer or redistribute the Service except where local law expressly permits it.
8. Disclaimer of warranties
To the maximum extent permitted by law, the Service is provided "as is" and "as available" without warranty of any kind, express or implied. We do not warrant that the Service will be uninterrupted, error-free, or that measurements produced by the Service will be free from error.
Take-off accuracy is your responsibility. Measurements depend on calibration values you set and on the accuracy of the source PDF. Always verify take-off quantities against the contract drawings before using them for tender, pricing, contract administration or any other commercial decision.
AI detection is an assistive input, not a measurement. The AI suggests where rooms, doors and windows appear; every quantity is then computed deterministically by the measurement engine against the PDF's geometry and your calibration. The AI may miss features, invent features, or place them imprecisely. You are responsible for reviewing every AI-generated markup and independently verifying all quantities before relying on them.
Nothing in these terms excludes or limits your statutory rights as a consumer under UK law, or our liability for death or personal injury caused by negligence, fraud, or any other liability that cannot be excluded by law.
9. Limitation of liability
To the maximum extent permitted by law, we are not liable for:
- Loss of profit, revenue, business, contracts or anticipated savings;
- Loss of goodwill or reputation;
- Indirect, special, incidental or consequential losses;
- Losses arising from inaccurate measurements (including AI-assisted ones) that have not been independently verified;
- Losses arising from your use of, or inability to use, the Service.
Where liability cannot be excluded, our total aggregate liability to you in connection with the Service is limited to the greater of (a) the amount you have actually paid us in the twelve months preceding the event giving rise to the claim, and (b) £100.
10. Your data
We back up the database regularly, but you should keep your own copy of any project that's commercially important to you — the CSV/JSON export features in the app are designed for exactly this.
11. Termination
You can stop using the Service at any time. We may suspend or terminate your account if you breach these terms, or if continued provision becomes commercially unviable. We'll try to give you reasonable notice and an opportunity to export your data, except where immediate termination is justified by the nature of the breach.
12. Changes to these terms
We may update these terms from time to time. Material changes will be communicated by email to registered users at least 14 days before they take effect. Continued use of the Service after that constitutes acceptance of the updated terms. If you don't accept the changes, stop using the Service before they take effect.
13. Governing law and jurisdiction
These terms are governed by the laws of England and Wales. Any dispute will be subject to the exclusive jurisdiction of the courts of England and Wales, except that consumers may rely on mandatory protections of the law of the country where they live.