Secondary construction costs - Need your expertise

Hello Hampshire,

I understand that these are services that the provider has to purchase themselves (or rather, they only mediate, coordinate, accept the items, etc.). It all seems to end up with me, and I also settle the invoices.

What could work better, however, is that I post the (expected) cost overview here and can get feedback on whether the list is complete, whether anything unnecessary is included, and whether the prices are reasonable?

Best regards, Ralf

Get an alternative offer for demolition and "Kellerverfüllung". Then you can best see what the situation is.

Here are our additional costs (single-family house, 108 sqm, 1.5-story):

Demolition (115 sqm, 1.5-story, built 1935, no basement): 12495 (lowest of many offers)
Soil surveyor: 696
Multi-utility meter: 2297
Building permit: 414
Construction supervisor DEKRA: 2260
Construction power box: 571
Construction power: approx. 90 per month
Staking out: 607
Construction path: 2400 (cash)
Construction site security: 283
Special usage permit: 271
Earthworks (additional costs: according to contract the construction company pays for the first 30cm, we need a total of 80cm, so additionally 50cm earth to be excavated and removed): 8625
Construction site security #1: 322
Construction site security #2: 269
Street blockage #1: 70
Street blockage #2: 70
Shell construction acceptance: 776
Paint for roof soffit outdoor: 140
House connections: 8708
Garden landscaping: 9960 (cheap)
Electrician (additional costs): 1179
Windows (additional costs): 1577
Stairs (additional costs, closed stairs): 2773
Photovoltaics (approx. 7400 kWp): 10992
Kitchen (cheap, including delivery and installation): approx. 9000
Washing machine: 400
Utility room furniture (cheap, including delivery and installation): approx. 1900

And additionally (not final, only estimated):
Rainwater and wastewater: 5500
Inspection shaft: 4800
Construction water: 30 per month
Indoor paint (materials only, we will do it ourselves): 850
Click vinyl (materials only, we will do it ourselves): 4200
Spackling (materials only, we will do it ourselves): ???
Move (truck rental): 500
Construction period interest: 3000
Terrace roof (3.5m x 6.5m, glass, wood): 7315

Total: 107180 euros

plus realtor, notary, property transfer tax, property tax, rent during construction period...

Incredible.... building a house takes a long time, but you don’t want to know where the costs belong.

Farbe x Dachunterschrage outdoor: 140

Garten-Landschaftsbau: 9960 (cheap)

Elektriker (zusätzliche kosten): 1179

Fenster (zusätzliche kosten): 1577

Treppe (zusätzliche kosten, geschlossene Treppe): 2773

Photovoltaik (ca 7400kWp): 10992

Küche (cheap, with delivery and installation): ca 9000

Waschmaschine: 400

Hauswirtschaftsraum Möbeln (cheap, with delivery and installation): ca 1900

Farbe, Indoor (only material, we will do it ourselves): 850

Klick-Vinyl (only material, we will do it ourselves): 4200

Spachteln (only material, we will do it ourselves): ???

Umzug (truck rental): 500

Terrassenüberdachung (3.5m x 6.5m, glass, wood): 7315

The above are NOT counted as ancillary costs, some are called furniture, upgrades, landscaping, etc...
About €51,000 should be deducted now.

So for anyone looking for advice here: this is a plot of land with demolition costs. Therefore about €50,000 ... everything else is nonsense!