Search for construction company, house type, floor plan, energy concept, etc.

Hello to all readers in this forum,

I am new here because we (my wife and I) are planning a new construction of a two-family solid house (basement with double garage, ground floor approx. 90 sqm, upper floor approx. 75 sqm) and are constantly researching all topics. The more construction companies we contact, the more confused we become. We are looking for a general contractor for a project in Schleswig-Holstein and have requested the "relevant" catalogs and construction descriptions. However, what is standard and recommended and what is "nice to have"? How do we find for ourselves, for example, the "right" insulation (e.g. 15 or 18 cm stone and insulation layer for external wall insulation; we have similar questions regarding the foundation and the roof)? What is the "right" ventilation system for us (air exchange in the walls or in the floor and ceiling)? Which construction company can we trust (one describes in the catalog "stone on stone," but has only planned a metal stud framework for the attic)? Which heat pump can we trust (e.g. there are massive defect reports about Nibe in "relevant" forums, although there is at least one construction company that exclusively installs "Nibe")? Is it true that with a development plan for "single-story construction," a house with ground floor + upper floor is also possible if the living area in the upper floor is at most 66% of the living area on the ground floor? How can we obtain a development plan as cheaply as possible and is the development plan also readable for "laypeople," so that we can see, for example, whether only specific roof shapes are allowed; or whether an adaptation to the surroundings is required and what does that mean then (is there a scope of discretion for the approval authority in this case)?

Hopefully, I am not scaring off all the readers with these many questions!!

Regards

Hello Dieter,

I am new here because we (my wife and I) are planning a new build as a two-family solid house (basement with double garage, ground floor approx. 90 sqm, upper floor approx. 75 sqm) and are continuously reading into all topics. The more construction companies we approach, the more confused we get.

We are looking for a general contractor for a project in Schleswig-Holstein and have requested the "relevant" catalogs and construction descriptions.

Then go to a new development area near you and talk to the builders there; preferably on the weekend, when many builders are on site and you get – separated from salespeople and providers – an honest answer regarding the respective provider and the quality used.

But what is standard and recommendable and what is "nice to have"?

Standard is the current state of the art – the rest, whatever your budget allows :)

Which heat pump can we trust (e.g. in "relevant" forums there are massive defect reports about Nibe, although there is at least one construction company that exclusively installs "Nibe")?

This provider from Sweden has gotten a bad reputation – by the way, completely unjustified – because it was used as an exhaust air heat pump only by a well-known provider for solidly constructed houses; that cannot work and leads to high consumption costs. But even in their construction description there has been a change of thinking, today a combination of exhaust air heat pump and air-water heat pump is offered.

For the rest, read up here, buy literature (for example, you can find a good selection on the Fraunhofer Institute’s website), attend lectures, the consumer advice center or the energy agency, and go to said new development areas.

Is it true that with a development plan specifying "single-storey construction" a house with ground floor plus upper floor is possible if the living area in the upper floor is at most 66% of the living area on the ground floor?

Only laymen talk about "1.5 storeys" – legally there are only I-, II- or multi-storey buildings. I-storey means, therefore, a complete ground floor with normal room height and an attic with sloping ceilings. When these slopes begin depends on the allowable knee wall height or the dwarf wall.

How can we obtain a development plan as free of charge as possible and is the development plan also readable for "laymen" so that we can recognize, for example, whether only special roof shapes are allowed; or whether an adaptation to the surroundings is required and what that then means (is there a scope of discretion of the approval authority in this case)?

Many questions :)

Every plot has a development plan, which is also handed out free of charge by the respective responsible land registry office. As a rule, laymen can also read this roughly if the associated textual provisions are also handed out.

The site coverage ratio indicates the proportion of a building plot that may be built over.
Floor area ratio stands for floor area ratio; the floor area ratio indicates the ratio of the total floor area of all full floors of the buildings on a plot to the area of the plot.
Roman I for single-storey construction, Roman II for two-storey development. If these numbers are framed by a triangle, the respective number of storeys is mandatory. If the development plan only contains references to I- or II-storey, it must be clarified with the building planning office whether the number of storeys may only be achieved mathematically or may also be fully utilized.

There are still some remarks on the development plan or the textual provisions and it is always advisable to have someone at your side who can also read the development plan.

Whether there is leeway or not depends on the person opposite you in the building planning office and whether he/she slept well the night before ...

Kind regards

Hello construction expert,
thank you for the introduction.[

QUOTE=Bauexperte;40726]
The standard is the current state of the art – the rest, whatever your budget allows :-)
[/QUOTE]

But what is the state of the art? When googling, I get many links from construction companies and hardware stores. All describe something correct from their point of view, but all differ in detail. At Fraunhofer or similar institutions, many scientific publications, mostly from professional journals, can be read. But are there good, reliable, and understandable websites and statements online about this, e.g., for the insulation of exterior walls, since there are very, very many materials, methods, and differences in this example? Every construction company has its own state of the art; so far, based on the example of "insulation," I cannot compare construction and service descriptions from different construction companies. Thus, choosing the right construction company is very, very difficult for me. And comparing only by price would mean I rely on everything offered and do not read any further details of the construction descriptions.

Regards