Installations · · 6 min read
Electrical Installation in a Renovation: Certificate, Fuse Board and Price in Estepona
When to renew a home’s electrical installation, what the certificate covers, what it costs and how to prevent overloads.
Renewing the electrical installation of a 90 m² home costs, as a 2026 guide, €4,000–8,000 and includes a new fuse board, wiring, switches and the electrical certificate. In older homes it should be checked when you renovate, and it is the item where cutting costs makes least sense.
When does the electrical installation need renewing?
- Home over 30–40 years old with fabric-covered wiring or no earth connection
- Frequent tripping, warm sockets or sparks
- Fuse board with old fuses or no residual-current devices
- Power upgrade or new uses such as aerothermal, induction hob or EV charger
- Full renovation with walls open
What is the electrical certificate?
It is the certificate of installation issued by an authorised installer after checking compliance with Spain’s Low Voltage Electrotechnical Regulation. It is needed to connect or upgrade the supply and acts as a legal guarantee of the work.
What does a full renewal include?
A board with residual-current and circuit breakers per circuit, new wiring with earth, switches, well-distributed lights and sockets, and pre-wiring for automation or climate control. Proper circuit design avoids overloads from the hob, oven and air conditioning.
When is it done and how long does it take?
Between 4 and 8 days in the installations phase, after demolition and before plastering. For faults or one-off certificates, La Rada arranges authorised local electricians.
Frequently asked questions
How much does it cost to rewire a flat?
Roughly €4,000–8,000 for 90 m², depending on points and quality.
Is an electrical certificate mandatory in a renovation?
Yes when the installation is modified or upgraded, and to connect a new supply.
How long does an electrical installation last?
A well-executed installation can last 30 to 40 years, though it should be inspected periodically.
La Rada Reformas team
Renovation management in Estepona and the Costa del Sol.
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