Marus

Terms of Business

Last updated: 14 September 2026

1. Who we are

  1. Marus is a trading name of Harper Quantity Surveying (“we”). Contact: support@marus.io.
  2. These terms apply to the Marus web application, including any free trial (the “Service”), and to any measuring, estimating or quoting work we do for you (the “Services”). By creating an account or instructing us you agree to them.
  3. The Service and the Services are for businesses only, not consumers. You confirm you are acting in the course of a business.

2. Estimates and measurements

  1. Measurements, quantities, estimates, prices and quotes (“Deliverables”) are produced by software and AI from the plans you supply. They are estimates and an aid to your own estimating, not a substitute for it. Automated measurement can miss, mis-identify or mis-measure elements, and errors in your plans carry through.
  2. You are responsible for checking the accuracy of every estimate and measurement before you rely on it, and in particular before you tender, agree a price, order materials or sign a contract. You must check every measurement, quantity, rate, price and total, and correct anything that is wrong.
  3. Any prices or rates in a Deliverable are either figures you entered, which are your responsibility, or indicative defaults that may be out of date or not applicable to you. A quote you produce with the Service is your document and your responsibility.

3. Fees and trials

  1. Subscriptions are billed monthly in advance, excluding VAT, at the price on our pricing page. Cancel at any time; access ends at the end of the paid period and part-used periods are not refunded. Fees for Services are agreed in writing and payable within 14 days of invoice.
  2. Free trials, free reports and anything else we provide free of charge are provided as a courtesy, “as is”, and must be checked exactly as anything you pay for.

4. Your content and our software

  1. You keep ownership of the plans, rates and other material you upload, and of the quotes you produce. You confirm you have the right to give it to us. You grant us a licence to store and process it, including with our AI and hosting providers, to provide the Service and, as set out in our Privacy Policy, to improve our software and models.
  2. We own the Service, its models, methods and software. You may use the Service only for your own estimating and quoting, and must not resell it, copy it or use it to build a competing product.

5. Liability

  1. Nothing in these terms limits our liability for death or personal injury caused by our negligence, for fraud, or for anything else that cannot lawfully be limited.
  2. Subject to 5.1, we are not liable for loss of profit, business, contracts or opportunity, or for any indirect or consequential loss, and we are not liable for any loss that would have been avoided had you checked the Deliverable as required by clause 2.2, or that arises from inaccurate or unsuitable plans or figures supplied by you.
  3. Cap. Subject to 5.1, our total liability to you for all claims arising in any 12-month period is limited to the greater of the fees you have paid us in that period (or, for a fixed-fee report, the fee paid for it) and £100. Where the Service or a report was provided free of charge, our total liability for it is limited to £100.
  4. You agree these limits are reasonable given the price you pay, your ability to check Deliverables before relying on them, and your ability to insure against a mispriced job. Any claim must be notified to us in writing within 12 months of the Deliverable being made available to you.

6. General

  1. We handle personal data as described in our Privacy Policy and keep your plans and projects confidential, except as needed to provide the Service or as required by law.
  2. Either of us may close your account at any time; we will give 30 days’ notice unless you have breached these terms. Export what you need before you close it. Clauses 2, 4 and 5 survive closure.
  3. We may update these terms by posting a new version at marus.io/terms/, with 14 days’ notice by email for material changes. Continued use after that is acceptance.
  4. These terms are the entire agreement between us, are governed by the law of England and Wales, and are subject to the exclusive jurisdiction of its courts.
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