What happens if my electrical installation fails the boletín check in Spain?

What it means when the installation fails the boletín check

In practice, a failed boletín means the prior inspection has found defects. The boletín (CIE) is a declaration signed by a registered electrical contractor that your installation complies with the REBT, Spain’s low voltage regulations. If it does not comply, it cannot be signed as it is: the defects must be corrected first.

The most common defects

• No earthing (grounding), or earth not connected in part of the home.
• No 30 mA RCD (diferencial), or one that does not trip when you press TEST.
• Undersized cables for the power you want to contract.
• An outdated fuse board, with fuses or no protection per circuit.
• Joints without boxes, or fabric or aluminium cables in very old installations.
• Bathrooms with sockets inside the banned zones.

Your options

1. Minimum upgrade. If the defects are specific, such as adding earth or replacing the board or an RCD, they are fixed and the boletín is issued. In older installations, inspecting, upgrading and certifying has a guide price of 100 to 300 euros depending on the work.
2. Full legalisation. If the installation was never legalised or is far from compliant, it must be upgraded, the technical report written and the whole thing registered. This runs from 600 to 3,000 euros, with an average of about 1,080 euros including fees and VAT.
3. Rewiring. When the wiring is at the end of its life, renewing the installation is the safest solution and avoids paying again and again.

If an inspection flags it

Business premises, large garages and other installations that need a periodic inspection by an authorised inspection body (OCA) can also receive a report listing defects to correct. The route is the same: fix them with a registered contractor and prove it.

What not to do

Do not look for someone to sign the boletín without inspecting. A certificate signed as a favour does not fix the installation, can leave you without insurance cover if something happens and exposes you in an inspection.

When to call an electrician

Call if you need a boletín and fear your installation will not pass, or if you have already been told it does not comply. In Seville, Spain, we tell you what needs fixing through the electrical certificate (boletín), certify older installations with an old installation certificate and handle rewiring old apartments.