Additional construction costs and realistic additional construction costs?

I dare to doubt your fireplace price. Are you building with residential ventilation? Has the chimney already been calculated? What does the district chimney sweep say... possibly a pressure switch. And and and ... cleaning flaps, steps on the roof, roof windows... that can quickly add up to €10,000.

I was talking about the stove, not the chimney. We are paying just under €4,000 for the chimney. And for a stove that is supposed to stand in the living room, I have budgeted €2,000. Don’t need a high-end unit, it’s only for coziness.

Also often forgotten and discovered by me quite late: If a loan is used, notary fees and registration of the mortgage will be incurred again. The amount of these costs depends on the amount of the mortgage to be registered.

And we haven't even started building yet and are already over €12,000 in ancillary construction costs. These are for: soil survey, surveyor, architect (up to permit-ready plans), and land charge registration.

The rest are still estimates.

Good evening,

we have planned to build a single-family house 9x11m with ground source heat on an 840 sqm plot. According to the municipality, the plot is fully developed.

Fully developed or also developed means nothing more than that the public connections are located on the street in front of the plot.

the house costs + some extras amount to 185,000

Including ground source heat pump and 100 m drilling, chimney flue I come to TEUR 207

now my question comes

for the incidental building costs:
construction electricity,
construction water,
additional earthworks - here we have about 1.5 meters difference in height within the building window -
soil survey,
re-surveying by the cadastral office,
electrical extras,
floor coverings,
building permit,
outdoor facilities (materials only),
wood stove
double burden
material for the garage (completely self-performed)

I have planned about 65-70,000 for this

To that:

floor coverings in EL: TEUR 10
painting work in EL: TEUR 10
outdoor facilities in EL: TEUR 10
garage material with flat roof, approx.: TEUR 8-10
plus reserves for extras: TEUR 10

do you think this is enough?

No.

Rhenish regards

Just out of interest, how do I come to 10,000 euros for painting work done myself? For far less money, I can already get a painter to paint my house and wallpaper the ceilings with paintable fleece, including materials. Are the 10,000 euros for floor work referring to all rooms?

I wonder about that too. I have already selected and calculated the floor coverings for the entire house, and including wall tiles, it comes to just under 8,000 euros. Of course, these are purely material costs, but we are installing the flooring and tiling ourselves.

For our plot price, I have added notary and land transfer taxes, so we are exactly at 70,000.
When I then budget an additional 65,000 euros for extra flooring costs, house connections, and all the little things including the garage, I thought I was doing pretty well.

The garden will not be done immediately, and we already have terrace stones and flowers if that counts. The paving stones will be done by ourselves, completely without a company.

What kind of additional construction costs did you have if you calculate with 40,000 without a garage but including land transfer and notary? Most of my friends and colleagues only had 25-30,000 in additional construction costs.