Hello,
... So far we have not requested a loan ...
That is fundamentally already wrong! The first step should always be to approach a financer - preferably an independent financer. It is a widespread misconception that an offer from a provider must be available for this initial consultation; banks usually like to work that way - independent financers are not interested in that. All the information you have voluntarily provided here on the HBF is necessary for this - with documentation - as well as about 2.5 hours of your time. Afterwards, you will know exactly how much money you
can put forward (if you were to fully utilize your limit) and can comfortably decide how much you actually
want to spend :-)
Plot 1250m2 available fully developed
Fully developed means nothing other than that the public utility lines lie in the street in front of the plot; in rare cases, also already on the plot.
Planned amount for house construction: 250,000€ - Construction project:
Single-story house without basement approx. 180m2, of which 60m2 are intended as a granny flat for rental in old age
Initial planning without own work
I have attached for you the ground plan of the ground floor of a one-story two-family house with a granny flat (main apartment approx. 147 sqm/living area, granny flat approx. 48 sqm/living area). The price for this age-appropriate house with a knee wall height of 0.625 m, a roof pitch of 35° is as a KfW 70 efficiency house EUR 235,000 without painting and floor coverings. Prices all Rhineland.
To create a floor plan of about 180 sqm/living area on one level as a KfW 70 efficiency house would probably be in the range of EUR 320,000; again without painting and floor coverings.
KfW 40 criteria should be met
Are you sure you know what KfW 40 means? Perhaps you mean KfW 55 – KfW 55 used to be KfW 40 :-)
Ventilation system with heat exchanger (?)
Controlled supply and exhaust ventilation with heat recovery approx. EUR 9,500
Windows: triple glazing
Is standard; at least it should be.
Solar thermal system with heating support and accordingly large storage tank
Becomes interesting only from 7,000 liters; usually a house planned that way is then designed around the storage tank.
Underfloor heating except for the bedrooms
(Solvis???) Gas heating?
Is standard – also in the bedrooms. Since the rooms can be regulated individually, it does not matter for the bedrooms either.
Wood stove without hot water heating for buffer tank: 10,000€
I cannot quantify that, as there are countless suppliers and therefore variations of wood stoves; the pure connection to the system does not cost the world.
Carport with adjacent storage room for bicycles & garden utensils: 12,000€
That’s about right.
Are these first assumptions realistic? Have we overlooked anything? Are the assumed 250,000€ reasonable for a house with this energy class?
No. Lower Saxony – as well as Schleswig-Holstein – is not as expensive as the rest of the country; but not that cheap either :-)
