What Is Behind the Principle?
Short Answer: Modular construction means assembling a building from prefabricated, standardized units. These modules are produced in the factory and are assembled on site in 1–5 days. The overall project typically takes 4–8 months. The principle extends beyond residential construction.
While the modular construction method describes the specific construction method of a modular house, this is about the underlying idea: A building is broken down into repeatable building blocks that are manufactured in the factory under controlled conditions and then assembled. This building block concept is found not only in the residential house, but also in schools, daycare centers, offices, clinics and hotels — everywhere where speed, predictability and repeatability are required.
Modular Construction versus Conventional Construction
The fundamental difference lies in the location of value creation: With modular construction the building is created largely in the factory, with conventional construction completely on the construction site. This results in clear differences in speed, cost certainty and deconstruction.
Modular Construction and Conventional Construction: Construction Time, Cost Certainty, Design Freedom, Expandability and Deconstructability
| Criterion | Modular Construction | Conventional Construction |
|---|---|---|
| Construction Time | Assembly on site in 1–5 days, overall project approx. 4–8 months | Significantly longer, as all trades occur one after another on site |
| Cost Certainty | High, thanks to series and factory production with calculable fixed prices | Lower, since weather, supplements and construction delays affect the price |
| Design Freedom | Within the module grid, special requests increase the cost | Very high, largely freely plannable |
| Expandability | Additional modules can be placed adjacent or stacked | Extension possible, but more complex and usually more expensive |
| Deconstructability | Modules are partly demountable and relocatable | Deconstruction usually complex, building substance remains fixed in place |
The time specifications come from our price facts 2026.
For whom is the modular principle worthwhile?
The modular principle suits all those who need a fixed completion date, appreciate a calculable price and want to expand or deconstruct later. How the principle is reflected in the concrete construction method of a modular house, read under Modular Construction MethodYour overall costs are calculated in the Cost Calculator.
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