Plan created by yourself?
Structural analysis calculated by yourself?
Measured by yourself?
Soil survey created by yourself?
Excavation pit dug by yourself?
Excavated material transported away by yourself?
Foundation work apart from the 4 hours by the civil engineering company done by yourself? (frost skirt/strip foundation/cushion installed)
House constructed by yourself?
House erected with really only one additional carpenter?
I created the entire building application including structural analysis and all the related stuff myself and my master carpenter, who is also my construction manager, signed it. That only cost me about 800 euros in fees.
Of course, I did not measure by myself. That wouldn’t work at all. I only set up the batter boards myself.
I don’t have a soil survey. I don’t need one with a slab foundation either.
In fact, I did all the civil engineering work completely by myself. With a shovel, pickaxe, wheelbarrow, and vibrating plate.
And with a container service.
I also did the entire foundation of the slab with frost skirt, 160 tons of gravel, 20 cm of glass gravel, empty conduits, shuttering, and reinforcement all by myself.
However, I didn’t use ready-mixed concrete for the frost skirt but mixed it myself on site. That’s cheaper.
And when the slab was finished and I applied the bitumen, I built myself a wooden assembly table that measured 5x3 m. Then I rented a small tower crane and the carpenter and I assembled the 32 elements on the table and stacked them next to the slab. That took 3 weeks. In the fourth week, we raised the house including the roof truss and in the fifth week we boarded the roof and applied the underlay membrane. That got the job done and the house was weatherproof.
I don’t want to tell anyone they should do it like that, but I think it simply isn’t true that a house has to cost 3000 euros per square meter.