Is the construction project feasible? Is our budget sufficient for it?

You easily need 2000 paint for the interior. What about the exterior? And plastering 30,000 is no chance, not even in the countryside.

We only recently helped paint the interior of a house almost the same size per m2. The cost for paint was well under €1000 from a well-known brand. (In the family, so the price is not exaggerated)

For plastering, I have an offer in the mentioned price range. However, I am still waiting for 2 more offers.

We have an offer for a single garage (but overlength) for €9,500 gross. A double garage for €35,000 is exaggerated, then I would recommend continuing to search and negotiate.

You also have to consider, we are not getting a floor slab in the garage, but only a ring beam and will then pave the whole thing ourselves inside as well.

Electrical, satellite and LAN are still missing from the list.

Electrical is not quite clear yet, but it will settle around €20,000 for a "normal" installation without major smart home features. Although we will also contribute quite a bit of our own work here since my brother and I have training as electronics technicians (although not in building technology).

That still depends on whether the exterior should be insulated; we pay for interior and exterior work, drywall work plus the ETICS insulation €45,000 gross. The insulation alone costs around €21,000 and can theoretically be deducted.

Nothing is insulated in our case, as we have no claims towards KfW,... 36.5 cm bricks and that's fine. For €45,000 I would plaster myself. We could do it, but without the right machines it's simply a pig's job and would then delay the entire construction.


since we are only building next year, I can't say whether there aren't still some hidden costs somewhere. But what I have mentioned is now initially fixed in writing with the respective company.
You also have to consider that we are building with individual trades contracts and therefore have no exorbitant costs for construction supervision,...

I can roughly tell you the bigger items off the top of my head. For the total, I’d have to look at the list this evening.

Additional building costs (notary, insurance, connections,...) approx. 20,000
Shell construction 174,000
Roof including visible roof truss in the garage and metal roof on the bay window 34,000
Heating (air heat pump with 1200l buffer tank and underfloor heating throughout the house) 43,000
Central ventilation system 8,500
Kitchen 20,000
Floors calculated at 50€/m2 (will be laid by ourselves, and we will probably take one that is a few € cheaper)
Screed 5,750€
Windows 20,000
Raffstore 10,000
Garage door 3,100
Front door 6,000
Paving 5,000 (laid by ourselves)
Bathroom fixtures 17,000
Fireplace 13,000

Wow, the roof is cheap. We pay alone for the garage (8x7 m) with an extension (12sqm) and the small basement (16sqm) 16,000 euros for slope insulation, sealing at the house and retaining wall, some kind of foil on top, and gutter.

Check the offers to make sure they are really valid by the time you are ready. Usually, there is a reservation.

Check the offers to make sure they are really valid until you are ready. Usually there is a reservation.

With ours, there was usually an expiration date. Never a reservation, which I also would not have agreed to.

The roofer, structural builder, and plumbing company also come directly from our village, which might bring a little extra since travel costs are eliminated and you know each other (which maybe doesn’t save thousands of euros but certainly a bit).

With us, nothing is insulated because we have no claims towards KfW,... 36.5 cm bricks and that's fine. For €45,000 I would plaster it myself. We could do it, but without the right machines it's just a pig job and then delays the whole construction.
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unfortunately you misread that, in the €45,000 there is €21,000 for insulation included, so it doesn't cost €45,000 without insulation either ;-)
ETICS is only used with KS.