InspectOS: Legalisation Cost Chart

Section 5 · Cost of not inspecting

What Illegal Construction Actually Costs to Fix

There is no fixed price for legalisation. Costs depend on the type, scale, and location of the works, and some cannot be legalised at all.

Simplex Safe inspection

Less than 1/10 the average hidden cost

Certified engineer · 47 checkpoints · Bilingual report in 48h

Average ROI: 2,756%

Average hidden cost, post-purchase

€12,400

Average discovered after escritura (InspectOS data) · Legalisation typically runs €5,500–€7,000, some structures cannot be legalised at all

Simplex Safe inspection vs. typical legalisation cost, post-escritura (buyer liability)

Simplex Safe inspection

InspectOS

Typical legalisation (most infractions)

€5,500 – €7,000

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Some irregularities cannot be legalised at all

Works violating the PDM or current safety standards may result in a mandatory demolition order at the buyer's expense. The Câmara Municipal has up to 10 years to act.