How Much Does It Cost to Replace a Home's Electrical Installation?
When it comes to replacing an electrical installation, the average price is usually around 3,500 € - 4,000 € for a home of approximately 100 m². In the case of buildings, renovating the shared electrical installation of a 4-story property can cost around 15,000 €. Prices can vary depending on material quality and the age and size of the installation.
The amounts are indicative and come from the original imported guide. The final budget depends on the scope, materials, and previous condition of the space.
Service Levels and Pricing
Compare the different options available based on your budget and needs to upgrade your electrical installation.
Basic
Partial electrical installation upgrade for small homes or renovation of specific areas. Includes targeted work without complete system replacement.
Standard
Complete electrical installation for homes of 80-120 m². The most popular option that includes total system renovation with medium-high quality materials and regulatory compliance.
Premium
High-end electrical installation for large homes or small buildings. Includes premium materials, automation and smart systems with extended warranty.
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Prices for changing electrical installations
See what homeowners usually pay for the most common tasks. Use these ranges to fine-tune your scope and avoid missing key items in your budget.
Changing the electrical installation of a 70 m² apartment
Changing the electrical installation of an 80 m² apartment
Changing the electrical installation of a 90 m² apartment
Changing the electrical installation of a 100 m² apartment
Changing the electrical installation of a 120 m² apartment
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When it comes to changing the electrical installation, the average price is usually around 3,500 € - 4,000 € for a home of about 100 m². In the case of buildings, renovating the shared electrical installation of a 4-story property can cost around 15,000 €. Prices may vary depending on the quality of materials and the age and size of the installation.
1. Size and electrical consumption of the home
The larger the home and the more equipment to be connected to the network, the more electrical power will be required. This requires correctly sizing the entire installation with an adequate number of switches and lighting points, as well as installing an electrical panel that supports the necessary power. These are aspects that directly impact the budget for changing the electrical installation of a house.
2. Compliance of the installation with current regulations
When the installation is very old, it is likely that many of its elements no longer comply with the requirements of new regulations. In a renovation, their replacement with approved equivalents is mandatory.
3. Special attention to bathrooms and kitchens
Regulations establish very strict requirements for these rooms, considered wet areas. The kitchen must have independent circuits for appliances and the height of the outlets cannot be less than 50 cm from the vertical planes of the cooktop and sink. General use outlets must be installed at least 110 cm from the floor to prevent water-related risks.
When it comes to changing the electrical installation, the average price is usually around 3,500 € - 4,000 € for a home of about 100 m². In the case of buildings, renovating the shared electrical installation of a 4-story property can cost around 15,000 €. Prices may vary depending on the quality of materials and the age and size of the installation.
What is usually included in a quote
Each professional may structure quotes differently, but most project budgets follow this logic.
Typically included
Often not included
Steps for Replacing a House's Electrical System
When it comes to changing the electrical installation, the average price is usually around 3,500 € - 4,000 € for a home of about 100 m². In the case of buildings, renovating the shared electrical installation of a 4-story property can cost around 15,000 €. Prices may vary depending on the quality of materials and the age and size of the installation.
1. Get quotes from several electricians
Contact 3-4 specialized electricians for detailed quotes on your electrical installation replacement. Prices vary significantly by complexity: from 1,200 € for basic work to 10,000 € for premium projects. Compare quotes that include materials, labor, and final certification to ensure the best value for your investment.
2. Assess the current condition of the installation
Have an electrician inspect your entire existing installation to identify safety issues, overload, or aging components. This assessment is crucial to determine if you need a complete or partial renovation, directly affecting your final budget between 1,700 € and 3,000 € depending on your home's size.
3. Determine the scope of renovation needed
Define exactly what your project includes: electrical panel replacement, complete rewiring, new lighting points, or compliance with current standards. The scope determines final pricing; a 70 m² apartment starts at 1,700 €, while a 120 m² apartment reaches 3,000 €. Prioritize safety and regulatory compliance.
4. Obtain municipal permits and required licenses
Most electrical renovations require municipal approval and work licenses. Your electrician should handle these procedures or advise you on local requirements. Permits are mandatory before starting work and costs vary by municipality—this step is essential for project legality and future property sales.
What can change your final price
Even similar projects can end with different budgets. These are the factors that most often push costs up or down.
Home size and surface area
A 100 m² home requires less material and time than a 200 m² one, which directly impacts the final budget. Wiring, pipes, and light fixtures increase proportionally with the surface area.
Age of existing installation
Older installations typically require more demolition and material removal work, which increases labor costs. An installation from the 70s-80s is more complex to dismantle than one from 2000.
Quality of materials and components
The price varies significantly depending on the brand and specification of cables, circuit breakers, switches, and other electrical components. Choosing higher durability and energy-efficient materials increases the initial investment.
Complexity of work and accessibility
If the installation requires wall work, suspended ceilings, or involves difficult access, execution time and difficulty increase. It also matters whether coordination is needed with other work such as painting or masonry.
How much does it cost to change the electrical installation of an old house?
When it comes to changing the electrical installation, the average price is usually around 3,500 € - 4,000 € for a home of about 100 m². In the case of buildings, renovating the shared electrical installation of a 4-story property can cost around 15,000 €. Prices may vary depending on the quality of materials and the age and size of the installation.
Factors that influence the price of changing an electrical installation in an old house
What is considered when renovating the electrical installation?
When it comes to changing the electrical installation, the average price is usually around 3,500 € - 4,000 € for a home of about 100 m². In the case of buildings, renovating the shared electrical installation of a 4-story property can cost around 15,000 €. Prices may vary depending on the quality of materials and the age and size of the installation.
In the breakdown of the budget for changing an electrical installation in an old house, different items are taken into account:
- Reforming the electrical installation of an old 50 m² house including wiring, differential switches, grounding, automatic breaker and 16 junction boxes among other elements, has an approximate cost of 1,000 €.
- Changing the electrical installation of an old 90 m² house with 40 outlets (sockets, switches and lighting points) will cost around 3,000 € if it is not necessary to make grooves in the walls.
- Renovating the electrical installation of an old 60 m² home, changing 20 sockets and 8 switches costs around 1,800 €.
- Changing a three-phase installation to single-phase costs around 500 €, including the Electrical Installation Certificate.
When renovating the electrical installation of a home or building, several fundamental aspects are considered to ensure its safety, efficiency and regulatory compliance:
Safety: it is essential to ensure that the electrical installation complies with current safety regulations. This involves using appropriate and quality electrical materials and equipment, as well as ensuring that all connections are properly protected against short circuits and overloads.
Electrical capacity: the electrical capacity necessary to meet the current and future energy demands of the building is evaluated. This includes considering the number of lighting points, outlets, appliances and electronic equipment that the electrical installation must support without problems.
- Safety: it is essential to ensure that the electrical installation complies with current safety regulations. This involves using appropriate and quality electrical materials and equipment, as well as ensuring that all connections are properly protected against short circuits and overloads.
- Electrical capacity: the electrical capacity necessary to meet the current and future energy demands of the building is evaluated. This includes considering the number of lighting points, outlets, appliances and electronic equipment that the electrical installation must support without problems.
- Energy efficiency: this can include the installation of LED lighting, smart energy management systems, and the optimization of electrical consumption through the strategic placement of lighting points and outlets.
- Planning and design: electrical renovation also involves careful planning of the design of electrical distribution within the space. This ensures a balanced and functional distribution of electricity throughout the home, considering aesthetic and functional aspects.
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Energy Suppliers
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Construction
Aggregate range based on the published guides in this family, including project totals, hourly pricing, and unit pricing where relevant.
Installers
Aggregate range based on the published guides in this family, including project totals, hourly pricing, and unit pricing where relevant.
Maintenance
Aggregate range based on the published guides in this family, including project totals, hourly pricing, and unit pricing where relevant.
Moving Services
Aggregate range based on the published guides in this family, including project totals, hourly pricing, and unit pricing where relevant.
Minor Works
Aggregate range based on the published guides in this family, including project totals, hourly pricing, and unit pricing where relevant.
Renovations
Aggregate range based on the published guides in this family, including project totals, hourly pricing, and unit pricing where relevant.
Technical Services
Aggregate range based on the published guides in this family, including project totals, hourly pricing, and unit pricing where relevant.
Retail & Assembly
Aggregate range based on the published guides in this family.
Frequently Asked Questions
How much does it cost to replace the electrical installation in a 100 m² house?
The average price for replacing the electrical installation in a 100 m² home ranges between 3,500 € and 4,000 €. This cost can vary depending on the quality of materials, the age of the current installation, and the complexity of the work. If the home is older or requires additional adaptations, the budget could increase to 5,000 € or more.
How long does it take to replace a house's electrical installation?
The duration depends on the size and condition of the home, but it generally takes between 5 and 15 working days. For a 100 m² house in good condition, it's usually completed in one or two weeks. In older homes with structural complications, the timeline can extend to three weeks.
What's included in an electrical installation replacement?
The installation replacement includes the substitution of cables, the circuit breaker panel, outlets and switches, as well as all necessary conduits and ducts. It also includes labor from a specialized electrician and, in many cases, final safety testing. The materials used must comply with current Spanish electrical regulations.
Do I need permits or licenses to replace the electrical installation?
Yes, it's mandatory to obtain a building permit from your local municipality and hire a licensed electrician who performs the installation according to the Low Voltage Electrotechnical Regulations (REBT). Upon completion, the electrician must issue an installation certificate that you must register with the relevant administration. Without these requirements, the work is not legal.
How do I choose a good electrician to replace the installation?
It's recommended to request quotes from several licensed installers and verify their references and previous experience. Make sure the professional is insured and offers a guarantee on the work performed, typically between 1 and 3 years. It's also important that they provide a detailed cost breakdown and explain the materials they will use.
Got more questions? Contact us!
Got more questions? Contact us!
Frequently Asked Questions
How much does it cost to replace the electrical installation in a 100 m² house?
The average price for replacing the electrical installation in a 100 m² home ranges between 3,500 € and 4,000 €. This cost can vary depending on the quality of materials, the age of the current installation, and the complexity of the work. If the home is older or requires additional adaptations, the budget could increase to 5,000 € or more.
How long does it take to replace a house's electrical installation?
The duration depends on the size and condition of the home, but it generally takes between 5 and 15 working days. For a 100 m² house in good condition, it's usually completed in one or two weeks. In older homes with structural complications, the timeline can extend to three weeks.
What's included in an electrical installation replacement?
The installation replacement includes the substitution of cables, the circuit breaker panel, outlets and switches, as well as all necessary conduits and ducts. It also includes labor from a specialized electrician and, in many cases, final safety testing. The materials used must comply with current Spanish electrical regulations.
Do I need permits or licenses to replace the electrical installation?
Yes, it's mandatory to obtain a building permit from your local municipality and hire a licensed electrician who performs the installation according to the Low Voltage Electrotechnical Regulations (REBT). Upon completion, the electrician must issue an installation certificate that you must register with the relevant administration. Without these requirements, the work is not legal.
How do I choose a good electrician to replace the installation?
It's recommended to request quotes from several licensed installers and verify their references and previous experience. Make sure the professional is insured and offers a guarantee on the work performed, typically between 1 and 3 years. It's also important that they provide a detailed cost breakdown and explain the materials they will use.