How much does it cost to replace a home's electrical system? 2026 Price Guide

Renovating a home's electrical system is one of the most important and expensive parts of a renovation, as it directly impacts safety, energy efficiency and, ultimately, the value of the property. However, the crucial question that everyone asks when thinking about a comprehensive reform is: How much does it cost to change the electrical installation of a house?

The reality is that defining a fixed price is almost impossible, as the budget range is notoriously wide and depends on multiple variables. To offer some useful guidance, we have compiled the factors that most influence the final cost and provide broad price ranges so you can start planning your investment.

Factors that define how much it costs to change the electrical installation of a house

The price of the electrical installation of a house is not simple; it is subject to the particularities of each project. Knowing the following elements will help you understand why budgets vary so much:

Dimensions and complexity of the property

The size of the property is one of the most significant factors. The more square meters the property has, the greater the need for materials (such as wiring) and the more hours of work required, which inevitably raises the total cost. For example, it is not the same to renovate a 70 m² apartment as a 200 m² single-family house.

The age of the system is also critical. Older electrical installations often lack essential safety features, such as grounding, and often require complete replacement to bring them up to current standards. In these cases, the cost can be above average.

The nature of the work

The cost varies drastically whether it is a minor repair, a new installation from scratch, or a complete renovation:

• Reforms with work: If it is necessary to cut walls or to open up cracks, the cost increases, since the intervention of masons will be required.
• Installations without work: There are alternatives that avoid major masonry work, such as the use of false plasterboard ceilings or exposed installation (with gutters or skirting boards). Although this last option may involve an additional cost due to the aesthetics of the materials, the total price of the renovation tends to be at the lower end of the average cost.
• Specific items: It is essential to consider that rooms such as kitchens and bathrooms tend to have stricter regulations and require separate circuits and differentials, which can increase costs in outdated installations.

Materials and labor

Materials represent a substantial part of the expenditure, accounting for about 60% of the total budget. This includes everything from wiring to the choice of mechanisms, luminaires and switches.

Regarding professionals, the price of a certified electrician's labor can vary widely, generally ranging from 20 to 90 euros per hour*.

The electric bulletin

If the reform is substantial, it will be necessary to process the Electrical Installation Bulletin (CIE) at the end of the work. This bureaucratic procedure, which guarantees that the installation complies with the regulations, usually costs between 70 euros and 300 euros*.

How much does it cost to change the electrical installation of a house?

Since each project is unique, the only way to know exactly how much it costs to change the electrical installation of a house is requesting a detailed budget to professionals. For this reason, we encourage you, if you have in mind an integral reform of a house, to ask us for a free and non-binding estimate. We will detail you in a concrete item, the price of the change of an electrical installation.

Estimated and general cost of a complete refurbishment (generic and indicative ranges)

The average price for an electrical renovation of an apartment can range from €2,000 to €9,500* or more depending on the size of the property and the complexity of the renovation. In terms of cost per surface area, a renovation can range from approximately €45 to €60 per square meter*.

The following are very broad price ranges based on the size of the home, considering a complete renovation and assuming medium complexity:

It is important to note that projects that include luxury elements, such as the installation of advanced home automation systems, can easily exceed €10,000 in large single-family homes.

Tips to optimize your budget and save money

Refurbishing the electrical installation is an essential investment, but it is possible to optimize the cost by following a few tips:

• Detailed planning: Before starting, clearly define the lighting points and sockets that are essential to avoid superfluous expenses. Simplifying the project always helps to reduce the cost.
• Request closed estimates: It is crucial to compare several offers. Ask for detailed quotes that specify material costs and estimated time to avoid surprises and find the best professional. Studio by Clikalia 's estimates are exactly like this.

Remember that, if you want to renovate a house and you are looking for an experienced renovation studio, at Studio by Clikalia you will find a team of professionals of the highest quality and professionalism that will help you install the electrical equipment that your home needs.

* A small note: The prices indicated in this post are indicative and may not coincide with those budgeted in a Studio by Clikalia reform. Keep in mind that, when budgeting, there are many variants that can influence the final price: geographical location, qualities and materials chosen, volume of the reform, availability and price of materials at the time of the reform, etc..