Umbraco 13 to 17 Migration Hub
What's actually happening on December 14, 2026..
After that date, Umbraco 13 receives no further security patches, bug fixes, or vendor support from Umbraco HQ. Your site won't break overnight, but the risk profile changes immediately.
Let's see How long will your migration take?
Get Your Migration Readiness Score
Answer 8 questions about your Umbraco site. We will analyze your risk level and deliver a personalized action plan you can share with your team.
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What this means for you
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Your recommended action plan
DECEMBER 14, 2026 · UMBRACO 13 EOL
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No sales follow-up unless you want it. We are an Umbraco Contributing Gold Partner with delivery teams across the USA, UK, Nordics, and India, we don't need to chase leads to fill capacity.
Free Umbraco 13 to 17 Migration Readiness Audit
When you are ready for a deeper assessment than a calculator can give, our team will run a free audit of your site and deliver a written report, yours to keep, whether you migrate with us or not.
What you get
- 30-minute discovery call: with one of our senior Umbraco developers. No salespeople, no fluff.
- Full dependency and package compatibility check: every third-party package verified against Umbraco 17, with alternatives suggested where needed.
- Custom code review: backoffice extensions, custom property editors, dashboards, and server-side code assessed for migration effort.
- Breaking-changes inventory: specific to your site, not a generic checklist. We flag exactly what needs attention in your codebase.
- Realistic effort estimate and timeline range: ballpark hours, phase breakdown, and a defensible timeline you can plan against.
- Written report: formatted for sharing with your CTO, CFO, or board. Speaks the language your decision-makers need.
- No obligation to migrate with us: the audit is yours to keep. Take it to any partner, or use it in-house.
| What it costs | Your time | Turnaround |
|---|---|---|
| Free: It's complementary | 30 minutes: plus access to your codebase | Within 48 Hours: written report delivered |
Why teams choose us for Umbraco migrations
Umbraco 13 to 17 is not a project you want to hand to a generalist. The upgrade includes a fundamental back office architecture shift, breaking-changes in custom code, and package-by-package compatibility work. Specialist depth is what separates a clean 8-week delivery from a painful 20-week one.
How our depth shows up in your project
Specialists, Not Generalists
We are not a general .NET agency that occasionally touches Umbraco. Umbraco is what we do, every day, across every industry we serve. The depth shows up in the things you don't see fewer surprises in discovery, faster resolution when something does go wrong, and architectural decisions that hold up over years.
MVP-Led Delivery
There are roughly 50 Umbraco MVPs in the world. We have 2 on the team along with 15+ Umbraco certified developers. That means your migration architecture decisions get reviewed by the same people who help shape the Umbraco platform itself not someone reading docs for the first time.
Real Migration Track Record
We have delivered more then 50+ including Umbraco 8 to 13, 10 to 13, and 13 to 17 migrations across industries eCommerce, SaaS, enterprise B2B, non-profit, and government. We know where the breaking changes hide and how to handle them cleanly.
Frequently Asked Questions
Do I have to upgrade through Umbraco 14, 15, and 16?
No. Umbraco supports a direct LTS-to-LTS upgrade path. You can go straight from Umbraco 13 to Umbraco 17, all intermediate migrations are applied automatically.
How long does a typical Umbraco 13 to 17 migration take?
For most mid-sized sites with moderate customization, 4 to 6 weeks end to end including discovery, build, UAT, and cutover. Heavily customized enterprise platforms run longer (8 to 12 weeks). Simple sites with minimal customization can be completed in 2 to 3 weeks.
What's the biggest risk in this migration?
Custom backoffice extensions. The Umbraco backoffice moved from AngularJS to a modern Web Components architecture in v14, which means any custom property editors, dashboards, or backoffice UI you have will need rebuilding. The discovery phase exists specifically to surface and scope this work before it becomes a problem mid-build.
Can I just stay on Umbraco 13 with extended support?
You can buy extended support directly from Umbraco, but this is meant as a bridge, not a destination. Extended support keeps security patches flowing while you complete a migration that's already in flight. Using it as an indefinite strategy means paying a premium to defer a problem that gets harder every month.
What if my third-party packages don't have v17 versions?
Our discovery audit identifies this early. Most actively-maintained packages have v17 releases or roadmap commitments. For unmaintained or niche packages, we evaluate three options: replace with a maintained alternative, contribute v17 support upstream, or rebuild the functionality natively. We've handled all three.
Will my content come across cleanly?
Yes. Umbraco's migration tooling handles the database schema and content migration automatically when going LTS-to-LTS. The work that needs human judgment is on the code side, custom logic, property editors, integrations.
Do you work with international clients?
Yes. We deliver Umbraco migrations across many global clients including UK, US, Europe, Australia, Middle East etc. Our team is set up for distributed delivery with overlapping working hours.
Why should I choose a Gold Partner over a generalist .NET agency?
Specialist partners reduce risk in three ways: (1) faster, more accurate scoping because we've seen your situation before; (2) fewer architectural mistakes because we know how Umbraco actually wants to be used; (3) better long-term maintainability because we don't write workarounds for problems that have native solutions. The cost of getting this wrong with a generalist team usually exceeds the savings.
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