Additional construction costs ... but which ones?

Hello everyone,

I have to admit - I am confused. There are so many different statements about the actual ancillary construction costs here in the forum, I have now collected tables from 3 different GCs and tried to combine them so that I can estimate the costs for our construction project as accurately as possible. Unfortunately, I still feel like I haven't succeeded. I find it difficult to decide which items I need to include and which not, as it is never consistent. I would be very grateful for your opinion / help / suggestions on my compilation.

your additional costs list is already very extensive. the "additional costs" you mentioned definitely apply. the "mortgage registration" is missing, which can easily amount to 1000€+.

construction water + construction electricity are accounted for very high. for us, construction water was already included in the water connection without a meter. construction electricity depends on how the building is dried. with a gas heating system, construction electricity is rather negligible (for us it amounted to 30€, the meter connection costs were significantly higher, which is why I complained to the utility company ^^).
the construction notification itself costs no more than 100€ at the office. the preparation of the documents is already included with many construction companies, otherwise 500€ will certainly not be enough. cadastral surveying depends on the value of the house but can also be done much later after the construction (if you want to delay the costs), the price is about right. we took the soil survey from the neighbor, 1000€ is certainly roughly correct (do it before the purchase).
for the house connections (including gas) plus wastewater/stormwater you can estimate about 15,000€. if it turns out 1-2k more, the general reserve should absorb that. you can already request the exact prices from the supplier in advance. the price depends on the length of the route from the street to the entrance of your house (piping around the back can quickly get expensive).

kitchen 15,000€ is already plenty and generous, can possibly still be used as a reserve
furniture well, if necessary you can also manage without for now, also reserve / the same applies to the moving company. if you move yourself it costs a hundred euros for some drinks and a sprinter van for 1 day.

9000€ earthworks: either it will be cheaper or significantly more expensive; most people do the soil survey for this and this is where the reserve is usually spent. you should try to place the excavation soil somewhere for free. either distribute it on your own property or know someone who wants the soil for free. sending excavation to a landfill costs a lot! (your 9000€ will quickly be gone).
my tip: only buy the kitchen after the earthworks bill

a general reserve of 5000€ is a bit low. what do you want to achieve with that? or have you factored reserves into other costs that do not have to be immediate? (furniture, kitchen, moving, etc...)

what about the exterior facilities? carport 10,000€ (6x9 meters including shed) / driveway + terrace 100€/m² as a flat rate

ps: the KfW expert is missing in case you build with KfW. costs about 1000€

pps: regarding the question why the additional cost calculations are so different: everyone counts different things as additional costs. the generally correct amount: 15,000€ house connections, 15,000€ additional costs for notary, authorities, surveying, etc. (depending on property tax) = 30,000€ the remaining 10,000 (to reach the flat rate of 40,000) is the reserve for earthworks (or general reserve).

Good evening,

Unfortunately, I still have the feeling of not having succeeded. I find it difficult to decide which items I have to include and which not, as it is never consistent. I would be very grateful for your opinion / help / suggestions regarding my list.

Take Yvonne’s list from the post from which I removed your discussion; Yvonne also lives in NI. (don’t be upset, but this thread is meant to collect the ancillary construction costs from users, preferably from all over Germany; discussions tend to distract from that) This list is even supplemented by many small amounts which strictly speaking do not count as ancillary construction costs, but also have to be paid. Ancillary construction costs fundamentally include only the costs that are directly related to the house construction. A kitchen is not included there, nor any other furniture.

In principle, you have to make a list of genuine ancillary construction costs – without these direct costs there is no house – and a list of accompanying costs: kitchen, moving, landscaping, etc. Without ancillary construction costs there is no move-in ready house on day "x"; however, cooking is possible on a two-burner stove.

Since people like to lie heavily about ancillary construction costs, I started the original thread. I hope current users remember this thread and will continue to keep it alive. This, and the different understanding of ancillary construction costs, in my opinion, also leads to the fact that you received three different statements.

Rhenish greetings

Take Yvonne’s list from the post where I removed your discussion; Yvonne also lives in NI. (Don’t be mad, but this thread is supposed to collect the incidental building costs of users, preferably from all over Germany; discussions tend to divert the focus )

No problem, thanks for moving it - after all it was my mistake ops:

Incidental building costs generally only include only the costs that are directly related to the house construction. A kitchen is not included, nor any other furniture.

I am aware of the correct terminology, but essentially I wanted to have all "variable" costs on the radar that are not covered by the general contractor. I cannot and do not want to afford a "mistake" of 20k€.

The "land charge registration" is missing, which quickly amounts to 1000€+

Hi , thanks for your reply as well. I always thought that the land charge registration was included in the 2% flat rate for notary and land registry. So thank you for the note, I have added it.

Construction water and construction power are estimated quite high. For us, construction water was already included in the water connection without a meter. Construction power depends on how the building is dried. With a gas heating system, construction power is rather negligible (for us it amounted to 30€, the meter connection costs were significantly higher, which made me complain to the utility company ^^ ).

Hmm... I have inquired about the specific costs for connecting electricity and gas and have had the price confirmed. The water company, on the other hand, said flatly "hire a technician, we only connect up to the property boundary". But no one has yet told me what to calculate for both installation and consumption for construction power and water. Although I can understand consumption.
By the way, it will be a gas heating system, so no electricity is necessary for drying.

9,000€ earthworks: either it will be cheaper or significantly more expensive, most people do the soil report and this is usually where the reserve is wasted.

The soil report will be carried out after signing the notary contract and receiving permission. However, it is simply flat land (height difference of a few centimeters over 20m) with sandy soil – this we could take from the city’s soil report. Unfortunately, only one borehole on our property.

A general reserve of 5,000€ is a bit low. What do you intend to achieve with that?

It was intended for upgrades.

What about the outdoor facilities? Carport 10,000€ (6x9 meters including shed) / driveway + terrace 100€/m² as a flat rate

They are planned and priced at just under 40k€. However, these will be financed bit by bit over the next 4 years by our bonuses.

PS: The KfW expert is missing if you are building with KfW. It costs about 1,000€

Thanks for the hint, it has been added.

How do you come to the conclusion that you don't need electricity for drying?
Construction dryers run on electricity and not on the gas heating.