Here and there, I have read articles on the Internet, where pseudo-weekend webmaster handymen announce the prices for a complete electrical renovation. Above all, it is a way to position themselves on the Internet without any real skills in this field. Moreover, the articles are not based on any technical data, so how can they announce the real price of renovating an old electrical installation?
I am mainly leaning towards a pale and simple copy of my earlier article (read here). As my “bumping” has passed, I will explain whatreally affects the rates of a complete electrical renovation.
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Professional term.
Elements that affect the cost of a complete electrical renovation in a home
Several criteria are used to determine the cost of electrical renovation:
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The type of distribution chosen for the electrical renovation:
This is the most important criterion that affects the price of electrical work. Several choices are available and will have a significant impact on the cost of an electrical renovation:
Recessed distribution, which involves making chases:
This is the most expensive method, as it requires making the chase (dust), removing debris, plastering the chases, and sealing the flush and bypass boxes.
There is also a lot of finishing work (painting, wallpapering) once the electrical renovation work is completed.
This is the method that will give the most beautiful finish, but it will cost the most.
Surface-mounted distribution, installation of moldings and surface-mounted devices:
This method is less invasive than recessed distribution.
It involves running electrical wires through electrical moldings.
On these moldings, the projection devices are positioned.
Less aesthetic, slightly faster, this method is a bit cheaper than recessed. The installation of moldings takes time, which explains why the difference is not huge compared to a recessed electrical renovation method.
A mix of fixed/recessed electrical distribution:
This is a good compromise to avoid having the equivalent of a battlefield in the home. Part of the electrical installation is recessed, the other is exposed.
In terms of price, the final cost will be between the recessed and the surface-mounted installation.
The type of wall for the renovation:The cost of electrical renovation varies depending on the installation techniques: Here the wooden skirting ducts
This is an important criterion that is directly related to the type of recessed distribution: depending on the nature of the walls, making the chase will be more or less easy — and sometimes even feasible or not.
Access to the attic:
Depending on whether your home is a bungalow or a two-story house, the work will not be the same.
The possibility of running electrical networks through the attic will facilitate the work and thus reduce the final cost of the electrical installation.
If your attic is accessible, the networks run through this attic and drop into the partitions.
The condition of the old electrical network:
The old electrical network may be reusable by location (to be taken with a grain of salt, it is a criterion at the discretion of the person doing the work).
It should also be noted that reusing electrical wires is not prohibited.
In any case, it is the electrician who will assess the condition of the installation and tell you if he can use the old electrical wires (this is actually a ten-year warranty).
Location of the site:
Obviously, a construction site in the city center will not cost the same as in the case of a suburban house. It is necessary to count the number of days planned for the construction site along with the daily parking cost. The bill can quickly become heavier!
The electrician:
Depending on whether your electrician is “recognized” or not, the price may change.
The selected electrical equipment:
Depending on the choice, the bill will naturally change. Be aware that there are quality electrical equipment options at much lower prices than the big electrical brands. I discuss this in an article about potential savings on electrical equipment.
So, can we summarize the cost of a complete electrical renovation to a simple cost per square meter?
Remember, you probably read it on my blog (or on another site that probably copied my formula)
Price of your complete electrical renovation work = area of your house in m² X 80 to 100€ excl. VAT
Can I afford to give these figures with the technical data I provided earlier?
Obviously, this is not an exact science, but I can make a few arguments that support my calculation of the cost of the work:
- An electrician works with an hourly rate ranging from 40€ to 50€ excl. VAT per hour
- The electrical equipment accounts for an average of 25 to 30% of the total cost of the project
- Each performance is described in subtasks, allowing for quantification of each achievement over time
Let’s take the example of a recessed 20A specialized electrical socket:
The labor is detailed in the subtasks
- Average length of a specialized socket
- The chase
- Sealing/recapping
- The connection
- Installation of the device
Each task is performed in a specific time frame to multiply by the electrician’s hourly rate, and the equipment is added to the service. Which, for my part, leads to installing a specialized recessed electrical socket for around 120€ excl.
So, how do we arrive at a calculation per square meter to determine the cost of an electrical renovation?
Using the NF C 15-100 standard
The NF C 15-100 standard provides, among other things, information on the number of sockets and light points in a home and according to the room. This is an element that allows counting the number of elements of the electrical installation to be arranged in a home.
By establishing the average areas for housing
INSEE publishes figures on the average areas of homes. A T4 house measures on average 84m², for example.
And relying on experience
Following electrical renovation work, I have feedback on experience that allows me to establish averages across all my projects (which should not be the case with “white-collar” workers positioned on search engine queries, but without any professional experience)
Thanks to these three elements, I combine and arrive at a result of 80 to 100€ excl. VAT per square meter for the electrical renovation of a home according to the NF C 15-100 standard
A complete electrical renovation will cost you between 80 and 100 euros excl. VAT per square meter. How to reduce the bill for electrical renovation work?
I provide you with elements that can reduce the final bill for electrical work.
These are small elements, but when combined, they reduce the cost of a complete electrical renovation.
Make the competition work when getting quotes
Thanks to online quote platforms (like here for example). It’s very simple, you express your need and you are contacted directly by several construction professionals.
Moreover, it’s free, you don’t have any steps to take, apart from
Facilitate the electrician’s work: registration
The installation of false ceilings and peripheral wall lining are solutions that facilitate the passage of electrical networks (ICTA ducts) throughout the house.
If you plan this type of passage, you will undoubtedly reduce the cost of the electrical renovation of your home.
Remove the old electrical installation yourself:
The removal and disposal of the old electrical installation is a task that is charged as part of the electrical renovation of a home. If you take care of it, it will be a saving in the end. However, be careful to agree with the electrician, and take safety precautions, the removal of the old installation must be done once the old network has been electrically disconnected!
Choose cheaper electrical devices
Small cumulative savings ultimately lead to reduced electricity costs. The equipment can vary from simple to double and can be changed later. Thus, you can start with a lower range and change the peripheral devices later.
Tag: Understanding electrical standards