Prefabricated house / Shell house

That was not an answer to the question. To me, anything beyond that is a luxury house and I would be annoyed for years about minimal equipment if I had less there than in an apartment.

from [unterwegs]

That was not an answer to the question. For me, a house is luxury anyway, and I would be annoyed for years by minimal equipment if I lacked more there than in an apartment.

from on the road

don't you worry about that
there is nothing minimal there

you don't understand how well-connected old geezers build

You are contradicting yourself, see #61. You tell everyone to understand everything, but you do not provide clear and concrete information (e.g. exact equipment, exact prices). This makes you not credible. You do not answer questions, only with a relatively arrogant undertone you emphasize how well everything is with you/works.

from on the go

you don't understand how well-connected old geezers build

I would say, loosely following the motto "one hand washes the other" and all under the exploitation of tax loopholes. Only, this is not possible for everyone, probably not legal either, and any possible future counter-performances would then also have to be included in the construction costs.

To make it clear to the average employed German taxpayer what kind of price savings are involved:

Craftsman A needs materials from Craftsman B for his private house construction. B would realistically purchase the materials for €10,000 net, add a 20% margin, and thus sell to A for €12,000 + 19% VAT = €14,280. Conversely, B as a private person also needs goods from A. Instead of charging each other for the respective goods, both provide the goods to each other free of charge.

Since A and B invoice the goods through their businesses, the goods exchanged cost, with a marginal tax rate of 30%, effectively only €7,000 instead of €10,000 each. A and B thus acquire the goods instead of paying €14,280 at the price of €7,000, i.e. less than half. It becomes even more effective with the labor services. Installing the respective goods would each require 150 hours. Hourly rate estimated at €50. However, the journeymen of both craftsmen do not cost €50 + €9.50 VAT but perhaps only €20/hour minus the marginal tax rate of 30%, so €14/hour. Instead of €8,925 (€59.50/hour x 150 hours), the labor effectively costs only €2,100 (€14/hour x 150 hours). For the entire trade, this means costs of less than 30%.

The issue of undeclared work is neatly avoided by charging at least a small portion of the trade, thus creating a basis for the existence of employees.

The fool is the employee, whose every additional kilometer from home to workplace is deducted from the tax return.

Unconsidered in this calculation, however, are back taxes, fines, and lost income due to imprisonment for negligent tax evasion or tax fraud.

And very important, with real names in the profile... but some are especially clever