Home Construction Financing - Assessment of the Project

an undeveloped plot (850sqm)

Preliminary discussion with the approving authority was positive

This plot is to be developed after the appropriate building permit (application will be submitted next week

I don’t know what the authority promised you, but the development of a plot is the prerequisite for the buildability of a plot. Therefore, it must first be developed by the municipality..

Development costs: €8,000 (in self-performance)

.. (self-performance does not count there as far as I know) before any financing can be obtained and then after planning a building application can be submitted.

Additional construction costs (e.g. house connections, soil surveyor, construction power, etc.): €10,000

For the additional construction costs, at least €25,000 should be calculated, for one sqm of living space €3,000. Possibly you can save €20,000–30,000 through self-performance. If you are very diligent, even €40,000.

For the BNKs, at least €25,000 should be calculated, for one sqm of living space €3,000. If applicable, €20,000-30,000 can be saved through EL. If you are very diligent, also €40,000.

With such massive own contributions as Kerbe announced, construction costs come to €1,200 to €1,400. The €3,000 is correct if you only wallpaper and lay floors as many do.

The greatest savings potential lies in the shell construction, civil engineering, and in the planning services.

With such massive own contributions as Kerbe announced, construction costs come to 1200 to 1400 euros. The 3000 are correct if you only wallpaper and lay floors as many do. The greatest savings potential lies in the shell construction, civil engineering, and planning services.

I can confirm that. We also did, for example, earthworks and drainage in own work. It cost us a good 3k for renting the equipment and some labor. The excavation was taken to a field that belongs to us. Savings of about 20k. Electrical work completely by ourselves, about 10k for materials (with connections to the wholesale trade). Savings also around 20k. Roof covering, roof insulation, vapor barrier, and interior drywalling in own work, savings 15-20k. Among acquaintances there are window and shutter builders as well as tinsmiths. Actually, only heating and sanitary as well as masonry and concrete work were fully contracted out. That way you can save quite a bit. But it is certainly neither normal nor the standard case. You have to be able to do something yourself and above all know many and the right people as well as have good connections. Timewise, it should also be planned rather relaxed, and you just have to accept that during the construction you have very limited free time.

Do friends and relatives come to help for months after work?
Who signs off on the electrical work so that you can get a meter, etc...

Oh, and incidental construction costs are calculated far, far too low. Probably not even €10,000 is enough just for the house connections...

Yes, we actually have almost every trade represented in the family (some with master qualifications) and a large circle of friends who are very helpful. The electrical work is done by a friend who is a master electrician.

Isn't 3000€/m2 considered construction costs for a current standard? With 160m2, that comes to 480,000€ just for the house. They are pushed down to 340,000€ here through self-performance, with two full-time jobs? That is hard to comprehend.
Garden design for 30,000€ on an 800m2 plot can also be very low and require significant self-performance.

Because both civil engineering and shell construction are carried out through self-performance, I think that one can manage with well under 3000 €/m2 here – at least that is the big hope. We have no great time pressure but are fully aware that the next year will involve sacrifices. But it is worth it to us.

I don't know what the authority promised you, but the development of a plot is the prerequisite for the buildability of a plot. In that respect, it must first be done by the municipality..

There was also a previous meeting with the building authority head and the mayor, which went very positively. Therefore, we are optimistic.