Blog · 2024 legislation · Portugal

SIMPLEX Urbanístico: whoever signs is accountable for everything.

Since 2024, the local council no longer approves the structural stability project. What that changes for you — and why choosing the right engineer has never mattered more.

Eng. Jhonatan Jiménez
Eng. Jhonatan Jiménez · Head of Engineering
Ordem dos Engenheiros (Portugal) n.º 99515 + COPNIA
Civil engineer · 9 years in professional practice · 9 Jul 2026 · 9 min read
In summary

Under SIMPLEX Urbanístico (Decree-Law No. 10/2024), the local council stopped technically evaluating the structural stability project and other specialist designs — they are now submitted by simple registration. In practice, the safety of your build depends entirely on the termo de responsabilidade of whoever signs it. Only an engineer registered with the Ordem dos Engenheiros, with SIGOE and civil liability insurance, can sign it. A contractor, or an unregistered technician, cannot — and gives you no protection at all.

Update, 27 October 2026: SIMPLEX 2.0 (Decree-Law No. 108/2026 of 29 May) came into force on 1 October 2026, after Decree-Law No. 155-B/2026 postponed the original 3 August date. It kept the philosophy of the 2024 regime, approved new templates for the termos de responsabilidade (Portaria No. 320/2026/1) and cut the follow-up control period for prior notifications from 10 years to 1. This guide's conclusion stands: whoever signs is accountable.

If you're planning to renovate, extend or refurbish a property in Portugal, there's a 2024 legal change that directly affects your project — and that almost nobody explains in plain language. I'll do that here, in practice, without the legal jargon.

What SIMPLEX Urbanístico is

SIMPLEX Urbanístico is the name given to the reform introduced by Decree-Law No. 10/2024, which aimed to simplify and speed up planning permission for building work in Portugal. One of its most important — and least talked about — effects is this: the local council stopped technically evaluating specialist designs, such as the structural stability project, the water systems design or the acoustics design.

What changes in practice: before vs. after

AspectBefore SIMPLEXAfter SIMPLEX (2024)
Review of calculationsThe council reviewed the designSubmitted by simple registration
Who guarantees safetyCouncil + engineerOnly the engineer who signs
Planning permission timeSlowerFaster, in principle
Risk if something goes wrongSpread across several partiesConcentrated on whoever signed

Notice what this means: the process got faster, but the safety net that was the council's review disappeared. That doesn't make planning permission worse — it makes choosing the right professional far more decisive than it was before.

Who can sign the termo de responsabilidade

This is the key point. Only a professional who meets all of the following, at the same time, can sign the termo de responsabilidade for a structural stability project:

  • Active registration with the Ordem dos Engenheiros, in the relevant specialty.
  • A valid competence verification code (SIGOE) for the type of project.
  • Valid professional civil liability insurance.

A contractor — no matter how experienced on-site — cannot sign this document. And a technician without those three conditions, even if they sign "something similar", gives you no legal cover at all if something goes wrong.

Why this is an advantage, not just bureaucracy: before, people could (wrongly) trust that "the council will check it". Now you know, from the start, that responsibility is traceable to one specific person — which makes it easier to choose well, and clearer who's accountable if a problem arises.

How to choose the right professional after SIMPLEX

With less institutional review, the verification is now on you. Before hiring, confirm:

  • Ask for their professional registration number with the Ordem dos Engenheiros — it's public and verifiable.
  • Confirm their valid professional civil liability insurance.
  • Demand a fixed, itemised quote, never a figure given over the phone.
  • Ask specifically who signs it — not "the company", but the person.

A serious professional shows these credentials without hesitation. If they hesitate, that's the first warning sign.

What this means for your project

If you're renovating, reinforcing or refurbishing a property in Portugal, SIMPLEX Urbanístico doesn't change the fact that you need a structural stability project whenever you touch the structure. What it changes is who guarantees it's done properly — and that guarantee no longer comes from the council. It comes from the signature, the insurance and the competence of whoever you choose.

Talk to the person who signs it

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Frequently asked questions

What people ask about SIMPLEX

What is SIMPLEX Urbanístico?

It's the reform introduced by Decree-Law No. 10/2024, which simplifies planning permission in Portugal. One of its most significant effects: the local council stopped technically evaluating specialist designs, such as the structural stability project — they are now submitted by simple registration.

Does that mean I no longer need an engineer?

Quite the opposite — you need one more than ever. Since the council no longer checks the calculations, the safety and legality of the build now depend entirely on the competence and professional registration of whoever signs the termo de responsabilidade.

Who can sign the termo de responsabilidade?

Only an engineer registered with the Ordem dos Engenheiros, with a valid competence verification code (SIGOE) and professional civil liability insurance. A contractor or a technician without that registration cannot sign this document.

How do I know if the professional I've hired is actually qualified?

Ask for their professional registration number with the Ordem dos Engenheiros and confirm their civil liability insurance. A serious professional will show these credentials without hesitation, before signing any contract.

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