Anyone wishing to build a house should find out about the subsoil before purchasing the land. A professional subsoil investigation provides information about the soil conditions and provides essential information about the soil type and soil class as well as the load-bearing capacity of the subsoil and the soil water conditions. The Association of Private Builders (VPB) draws the attention of prospective buyers to the importance and necessity of a subsoil investigation. Especially when purchasing a turnkey house, the investigation is essential.
If problems arise during the construction phase that are due to the condition of the building ground, the private builder and not the contracted construction company must bear the costs incurred. In line with the Construction Contract Law in force since January 1, 2018, construction companies of prefabricated houses are obliged to provide private builders with a construction description before concluding a contract. In addition to the offer and the respective prices, the cost risks must also be listed in this description. Cost risks are potential problems that may arise during the planning or construction phase.
A classic cost risk, for example, is the building site. If you build a house on a plot of land without knowing the soil conditions, you may have to reckon with additional work and costs. In order for the construction company to be able to make a realistic calculation, detailed information on the subsoil is of elementary importance. With the information obtained from the subsoil investigation, the construction company can calculate what additional costs will most likely be incurred for excavation, soil remediation or the construction of a basement. If the property to be built on was formerly used as a commercial area or is located near wetlands, special care must be taken.
Source: VPB
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