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Terms of service

Last updated: 12 June 2026

These terms govern engagements between EngineBuildFlow S.L. ("we", "us", "the studio") and the client ("you"). They apply to every project, retainer and one-off block of hours we deliver. By instructing us in writing, by signing a proposal, or by completing checkout on this site, you accept these terms. Project-specific scope is defined separately in the proposal we send you.

1. The services we provide

We design, build and maintain websites, e-commerce stores, internal tools and adjacent digital products. The exact deliverables for a given engagement are listed in the proposal you sign. Anything not in the proposal is not in scope. Adding work mid-engagement is handled via a written change order at our standard hourly rate.

2. Quotes, payments and invoicing

  • All amounts shown on the site exclude Spanish VAT (IVA, currently 21%). VAT is added to invoices for clients billed inside Spain. Clients invoiced outside the EU are billed without VAT.
  • Marketing-site projects are invoiced 50% on signature and 50% at launch.
  • Larger storefront and tool builds are invoiced 40% / 30% / 30% across kickoff, design sign-off, and launch.
  • Care plans are invoiced monthly, in advance, on the same calendar day as the engagement began.
  • Hourly blocks are invoiced in full at the time of purchase, prior to any work being done.
  • Invoices are payable within 14 days of issue. Late payment after 30 days incurs interest at the statutory Spanish rate.

3. The kickoff and the schedule

Schedules quoted in the proposal assume reasonable client responsiveness — typically a reply within two business days. If client review or content delivery falls behind by more than two weeks, we reserve the right to pause the engagement and reschedule into the next available slot. We will give you at least one week\'s written notice before doing so.

4. Revisions and acceptance

Each design phase includes two rounds of substantive revision. Further rounds are billed at our standard hourly rate. Once a phase is signed off in writing (email is fine), we proceed to the next phase. Returning to a previously-signed-off phase is treated as a change order.

Project work is deemed accepted at the earlier of: written acceptance from you, or 14 days after launch with no documented defects raised.

5. Intellectual property

  • On full payment of the final invoice, we assign to you the full copyright and ownership of all bespoke design and code we have produced specifically for your project.
  • Open-source libraries used in your project remain under their original licenses (MIT, BSD, Apache, etc.) and are not assigned to you.
  • We retain ownership of any pre-existing studio components, internal tooling and conventions used in your project. You receive a perpetual, royalty-free, non-exclusive license to continue using them as part of the delivered work.
  • Until the final invoice is paid, all delivered work remains our property and may not be used in production.
  • We retain the right to feature the work in our portfolio, including images, video, and a brief written case study, unless you request anonymity in writing before launch.

6. Hosting and third-party services

Unless explicitly included in your proposal, hosting, domain registration, email services and third-party SaaS subscriptions are arranged in your name and at your cost. We can arrange these on your behalf, but invoices are passed through at cost — we do not mark them up.

7. Cancellation

You may cancel an engagement at any time with written notice. Work completed up to the cancellation date is billed at the time-and-materials rate, capped at the next milestone payment. Pre-paid hourly blocks are non-refundable but unused hours roll over for 90 days. Care plans can be cancelled with 30 days\' notice; the final month is prorated to the day.

8. Confidentiality

Both parties keep confidential information shared during the engagement private and use it only for the purposes of the project. This obligation survives the engagement and continues for three years after the final invoice is paid.

9. Liability

Nothing in these terms excludes or limits liability for fraud, gross negligence, death or personal injury, or any other liability that cannot be limited by Spanish law. Subject to that, our maximum aggregate liability for any engagement is limited to the total fees paid by the client for that engagement in the twelve months preceding the claim. We are not liable for indirect or consequential losses, including loss of profits, loss of business, loss of revenue or loss of goodwill.

10. Warranty and bug fixes

Every project includes 30 days of free post-launch support: bug fixes, minor content edits and performance regressions are on us. After that period, fixes are handled under your care plan or hourly block. The studio does not warrant the work against changes you (or third parties) make to the site after launch.

11. Force majeure

Neither party is liable for failure to perform caused by events outside its reasonable control, including without limitation: prolonged internet outages, supplier failure, illness, civil disturbance, governmental action, or natural events. The affected party will give written notice as soon as practical and the schedule will be extended by the duration of the event.

12. Governing law and jurisdiction

These terms are governed by Spanish law. Any dispute arising in connection with this agreement is subject to the exclusive jurisdiction of the courts of Barcelona, Spain. Before litigating, both parties agree to attempt resolution in good faith via written correspondence for at least 30 days.

13. Contact

Notices under these terms should be sent to info@enginebuildflow.com with a copy by post to Carrer del Carme, 62, 08302 Mataró, Spain.