Umbraco upgrades

A clear path from an old Umbraco version.

Move to a supported platform with an upgrade plan grounded in your actual website. We assess the code, content and integrations, then manage migration, testing and launch as your Umbraco Gold Partner.

Umbraco Gold Partner
Version support

Know where your website stands.

Standard support has ended for Umbraco 7, 8 and 10. Umbraco 13 is in its security phase, with end of life on 14 December 2026. An end-of-life website can keep running, but routine vendor fixes have ended.

Standard support schedule. Status as at 2 October 2026.
VersionStatus at reviewEnd of life
Umbraco 7End of life30 September 2023
Umbraco 8End of life24 February 2025
Umbraco 10 LTSEnd of life16 June 2025
Umbraco 13 LTSSecurity phase14 December 2026
Umbraco 14End of life30 May 2025
Umbraco 15End of life14 November 2025
Umbraco 16End of life12 June 2026
Umbraco 17 LTSSupported27 November 2028
Umbraco 18 STSSupported25 June 2027

Umbraco 9, 11 and 12 are also end of life. Separate paid extended support may be available for eligible LTS versions. We confirm the current support options and terms as part of your upgrade assessment.

Your starting point

Different versions need different plans.

Umbraco 7 and 8 migrations

These older implementations need a migration assessment. For Umbraco 8, the move to modern .NET means custom application code needs adapting or rebuilding. Umbraco 7 also requires content migration and implementation work. We identify what to preserve and test a representative migration before scaling up.

Umbraco 10 upgrades

Review the CMS alongside its .NET dependencies, packages and hosting. We map the required migration steps and test custom functionality against the target version. Unsupported intermediate versions may be needed during development; the destination should be a supported release.

Umbraco 13 to 17

The newer backoffice changes how extensions work. We review custom editors and packages, then compare upgrading the existing solution with moving content into a fresh implementation. The right route depends on how much of your current platform is worth carrying forward.

Read our Umbraco 13 upgrade guide →

Choosing your target version

Umbraco 17 is the current long-term support release at this review, with standard support through November 2028. We assess it against your dependencies and roadmap. A newer standard-term release can suit some projects, with a different upgrade cadence to budget for.

From assessment to launch

Know what will change, and how we’ll prove it works.

01. Assess and scope

Review versions, packages, custom code, content and integrations. Receive a recommended route, dependencies, estimate and delivery plan.

02. Migrate and test

Trial the migration in a separate environment. Test publishing, forms, search, payments and connected systems with the people who use them.

03. Launch and hand over

Agree backups, content changes, redirects and recovery steps. Monitor the release and document the upgraded platform and ongoing responsibilities.

Your questions

Before we get started.

How much does an Umbraco upgrade cost?

The starting version is only part of the scope. Custom code, packages, content models, integrations and testing requirements all affect the work. We review the implementation first, then provide a scoped estimate with assumptions and options. A version number alone is not enough for a reliable quote.

Can we keep our existing design and content?

Often, yes. An upgrade does not automatically require a redesign. We assess what can be retained, what needs adapting and where rebuilding would be more practical. Content and media are mapped and checked through trial migrations before launch.

Will an upgrade affect our search rankings or cause downtime?

We plan to preserve URLs, metadata and important journeys, with redirects where addresses must change. Rehearsals, a content freeze and a recovery plan help control the launch. We agree any maintenance window in advance; zero downtime or unchanged rankings cannot be guaranteed.

Can you upgrade a website built by another agency?

Yes. We start with access to the code, environments, database and package inventory, alongside any documentation and known issues. That review establishes the migration route, technical dependencies and responsibilities before delivery begins.

How long will the upgrade take?

We set a delivery plan after the technical assessment. The time needed depends on the work to custom editors and integrations, content migration, testing and your team’s availability for review. The plan includes milestones and a proposed launch window.

Talk to Absurd

Start with your current Umbraco version.

Share your website address, version and any known issues. We’ll help you understand the work involved and the next step.