Sampling (architecture)

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In the construction industry, sampling describes the phase during the construction of a house in which the builders decide on the construction components that are flexible in terms of design.

Sampling areas

The sampling affects the following elements of the house:

Outdoor area
  • fence
  • entrance
  • Access / driveway to the house
  • Parking space for garbage cans
  • garage
  • Roof tiles
  • Gutter
  • Facade painting
  • Sun protection / roller shutter
  • window
  • Mailbox
  • Outside light
Indoor

Sampling process

In most cases, the sampling takes place after the construction contract has been concluded with the help of a specialist in so-called sampling centers. Alternatively, the sampling can also be carried out at the individual specialist dealers of individual trades and construction companies who contractually act as subcontractors of the property developer . Here, the building owners are presented with all materials and objects from the various sampling areas that are included in the standard equipment. The sampling phase lasts a total of 3 to 4 days and can extend over several dates. With the help of the sampling protocol, the decision details of the builders are recorded and it serves as the legal basis for the subsequent implementation.

Matching / matching

The decisions of the builders within the options of equipment elements contained in the building contract are fixed in terms of price. If the client has the personal wish to deviate from the standard equipment of the construction contract, this has an impact on the construction price. When sampling, there is the option of having parts of the interior or exterior of the house equipped with self-selected, mostly higher-quality materials for an additional charge. On the other hand, individual services can also be removed from the scope of the contract as part of the sampling against a corresponding cost credit. This can be the case if the house builders do not like the choice of materials and objects within a sampling area or if they want to save costs by partially expanding without the work of the craftsman.

Problems during sampling

Lack of preparation by the builders

The sampling decides significantly on the later style of living of the house and is associated with a variety of decisions. Often there are difficulties in the sampling appointments in the form of decision discussions or differences of opinion between the building owners. This can lead to nervous stress, but also to time bottlenecks during on-site appointments in the specialist trades. It is therefore advisable for those affected to know the contractually stipulated construction and service description of the house in advance of the fitting out appointment and to be aware of their own wishes and open questions and to list them. Since every material has advantages and disadvantages, these should be carefully weighed against each other with appropriate research and comparative work.

Unwanted construction cost overruns due to sampling

The service descriptions of the building contract often only contain a basic set of materials. Often the representatives of the various trades offer the customer useful extras as part of the sampling, but these are not included in the construction price. This can result in large additional costs, which are usually not taken into account in the financial planning of the builders. The builders should therefore ensure that the specified equipment standard is acceptable to them before signing the contract and, if necessary, negotiate additional contracts with the developer. If this does not happen, the unwanted sampling can result in unexpected additional costs.

Disagreements between builders and dealers

When it comes to the feasibility of certain requests, there are often inconsistencies and communication problems between the client and the representatives of the various sampling areas. The specialist representatives often advise builders against special ideas, as they classify these as not feasible.

In order to make the right decisions, it is advisable for the builder to acquire well-founded and construction-relevant knowledge. Various means such as ready-made sampling guides, hiring an interior designer, exchanges with other builders and literature can be used to help.

literature

  • W. Thieme, Hubertus Kuhlmey: Cost trap house building. Eberhard Blottner, 2011.
  • SH Geyer: BUILDING SACRIFICE. House building - the gate to hell. Norderstedt Books on Demand, 2012.
  • H. Reichl, N. Krennmair: Success strategies for house building the manual for house building coaching. Books on demand, 2002.
  • G. Kohlbecker: Be careful when buying real estate: What the vocabulary in building descriptions and purchase contracts can reveal or hide. Eberhard Blottner, 2011.

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