ᐅ Cost of Converting a Flat Roof into a Balcony

hampshire schrieb:

The structural requirements for a balcony terrace are quite demanding and mean that you need a different construction. Add a surface covering and a railing, and suddenly the price doesn’t seem that high anymore.

Thank you very much for the response. Am I correct in understanding that the balcony terrace is not built on the flat roof itself but completely as a separate structure? If so, the price definitely doesn’t seem too high.
Therefore, since the flat roof has surely already contributed significantly to the total house cost, that amount should be subtracted. Or am I overcomplicating things?

AxelH. schrieb:

Great house, very well done!

eugensit schrieb:

Or am I overcomplicating this?

Although the question wasn’t directed at me, this was our situation:

Reinforced concrete ceiling for the entire ground floor – included in the price.

Flat roof with tapered insulation and appropriate waterproofing – included in the price.

Parapet capping in anodized aluminum – included in the price.

So, for the calculated house price, only the additional rows of masonry had to be added. This had about the same negligible impact on the overall house price as plastering the extra brick rows.

Additional costs arose only from the protective mat placed between the waterproofing and the roof terrace, and from the terrace construction itself using WPC decking.

Best regards

Axel

I recalled that the load-bearing capacity of a flat roof must be designed differently for pedestrian use compared to when the roof is not intended to be accessed. This would require a different construction if the planned roof does not already meet this requirement.