If you own a property or business in Spain, sooner or later you’ll need one or more installation certificates. These documents are essential to ensure safety, legal compliance and proper utility connections (electricity, gas, water). In this article, we explain which certificates exist, when you need them, and how to obtain them.
What are installation certificates?
Installation certificates are official documents issued by an authorized technician confirming that an installation complies with current regulations and is safe to use. They are often required for new constructions, renovations, supply reactivations or when changing ownership.
Main types of installation certificates
- Electrical certificate (Boletín Eléctrico): Required to connect electricity, change power level or confirm safety. Valid for 20 years.
- Water certificate: Needed to connect to the potable water supply or after major renovation work.
- Gas certificate: Mandatory for activating or reactivating natural gas or propane/butane supply.
- Heating certificate: Required for installing central or individual heating systems, especially in buildings or full refurbishments.
- Air conditioning/ventilation certificate: Required for systems above a certain output and must be issued by a qualified professional.
When do I need one?
- When buying a new or renovated property
- When changing the holder of utility contracts
- To activate or reactivate electricity, water or gas
- To change the contracted electrical power
- If requested by the utility company due to expired documentation
How to get a certificate
Only a licensed installer can issue these certificates after inspecting the installation. In some cases, registration with the regional authority is required.
Conclusion: Be proactive
Having the correct installation certificates ensures the safe and legal use of your property. If you’re unsure which ones apply, we recommend seeking professional advice or outsourcing the process to a specialist service provider.
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