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For a long time, talking about construction meant talking about bricks, concrete and cement. The typical image of a building site included scaffolding, dust and never-ending deadlines. In contrast to this traditional model, modular construction proposes a radical change: manufacturing the building in an industrial plant and then assembling it on the plot.
Instead of erecting each element in the open air, much of the work is moved to a controlled environment, with precise, supervised processes. The modules are produced complete (with structure, envelope and building services) and arrive ready to be placed on site, which reduces timescales and ensures uniform quality.
This system offers a faster, more efficient and more sustainable alternative, which is beginning to take hold in Spain and which, in European countries such as Sweden and the Netherlands, already accounts for a very significant share of the building market.
What modular construction is
Modular construction is a building system based on the manufacture of complete three-dimensional modules in a controlled industrial environment. Each module includes structure, envelope, building services and even interior finishes.
Once finished, the modules are transported to the plot and assembled on site. There the final connections to the water, drainage, electricity or HVAC networks are made, resulting in a fully operational building in very short timescales.
It is worth distinguishing between modular construction and industrialised construction. The former focuses on the use of three-dimensional modules, while the latter covers any process that incorporates industrial manufacturing techniques: from prefabricated panels and elements to complete systems assembled in the factory.
Advantages of modular construction and some limitations to bear in mind
The first and most obvious advantage is time: the modules are manufactured in parallel with the foundation and site preparation works, which makes it possible to reduce delivery times considerably.
The controlled industrial environment ensures greater precision at every stage of the process. This translates into fewer errors, better finish quality and more stable safety conditions for workers. In short:
- Fast execution, with timescales up to 50% shorter.
- Compliance with the initial budget, by minimising unforeseen events.
- Waste reduction and lower environmental impact.
- Safer working conditions and more efficient ones.
As well as efficiency, modular construction brings versatility. The modules can be adapted to different uses and typologies: from industrial buildings and offices to schools, hospitals or customised homes.
>> Read more: Advantages of prefabricated construction in steel structures.
But this construction model also poses challenges worth considering. The first is cultural: the idea still persists that “prefabricated” means temporary or lower quality, which creates a certain distrust in part of the market.
There are also technical and regulatory constraints. The integration of the modules must comply with planning regulations, the Código Técnico de la Edificación (Spanish Building Code) and other specific regulations on safety, energy efficiency and fire resistance.
Another key aspect is transport and assembly. Moving large modules involves additional costs, as well as the need for cranes and suitable access. Furthermore, in the case of relocatable modules, their durability may be compromised if dismantling and transport are not carried out under optimum conditions.
For this reason, each project requires a rigorous prior analysis to determine whether modular construction is really the most suitable solution.
Trends and the future of modular construction
Modular construction still accounts for a small percentage in Spain, but forecasts point to sustained growth. Some studies put growth at close to 10% in the coming years, driven by the need to shorten timescales and improve efficiency in building.
In Europe the picture is different. Countries such as Sweden and the Netherlands exceed 40% of buildings constructed with industrialised systems. That difference shows how much further this model still has to go in the Spanish context and the opportunity it represents for developers and investors.
The sector also stands out for its ability to attract talent. Compared with traditional building, modular construction offers safer and more stable working conditions, which makes it easier to bring in young and specialised profiles.
At institutional level, initiatives such as the housing PERTE (Strategic Project for Economic Recovery and Transformation) strengthen the path towards industrialisation, favouring a progressive transition towards more productive, sustainable and competitive systems.
Why modularity is shaping the future of construction
Modular construction could be setting the course that building is heading towards: industrialised, controlled and measurable processes. This approach brings construction closer to the model of other industries, where planning, efficiency and standardised quality are the norm.
Beyond timescales and costs, its true value lies in the possibility of rethinking how we conceive buildings: as products designed to meet specific objectives, with clear processes and predictable results. That mindset is what will determine the competitiveness of the sector in the coming years.
In this sense, modularity opens the door to a cultural change: moving from construction seen as something artisanal and unpredictable to a system capable of integrating innovation, sustainability and productivity within a single framework. Those who know how to adapt to this logic will be in a better position to meet the demands of the market and of society.
At ALTERTECNIA we closely follow the evolution of this and other industrialised solutions. Our aim is to apply the innovations that really add value to each project. Would you like us to take care of yours? Contact us!
