Floor area ratio calculation when 2 parcels need to be combined

Buildability was clarified by our general contractor (by phone) with the building authority, who have signaled their approval for the current plans.

I suspect that it is somewhat similar to Tolentino. A large plot was divided. Buildability is derived from the neighboring development. The plots are considered together. I would estimate that floor area ratio I and II are proportionally distributed over all 4 plots. If the access road consumes a large portion of floor area ratio II, then proportionally less remains for the rest. But of course, that is just a guess. Is there a floor area ratio known next door?

There is already a development plan for the opposite side of the street. The floor area ratio is 0.4 there, and 50% more for floor area ratio II. I share your assumption that this is proportionally distributed across the plots. Certainty will probably only be provided by the building authority.

how one can even comply with the floor area ratio on the access property

By limiting oneself, worst case, to three lanes for a trike instead of fully sealing it.

And if the access then also has to serve the floor area ratio of the house, for example,

In my opinion, it cannot do that.

By limiting oneself to three lanes for a trike in the worst case, instead of fully sealing it.

That would be a dream solution from my point of view, considering the alternative (not building at all :eek:).

The city of Hamburg writes: "Any type of sealing leads to a structural facility, therefore all sealed surfaces are counted (including water-permeable surfaces)."

To me, that sounds as if an access road completely counts towards the floor area ratio, regardless of what it consists of. Gravel, grass pavers, trike design. Is it then even possible to influence the floor area ratio of an access road in any way?

Because if a plot is basically used 100% for access (in combination with the footpath to the front doors) and then has to comply with an impervious surface ratio, how can that work?

It doesn't have to. It is not a building plot, but only has the special function of access. Right of way. Please don't ask me for sources or paragraphs. The impervious surface ratio applies individually to each plot. Keep in mind: Terra belongs to the house, therefore to the impervious surface ratio I.

From my point of view, that would be a dream solution, given the alternative (not building at all :eek:).

The city of Hamburg states: "Any type of sealing leads to a building structure, therefore all sealed surfaces are counted (including water-permeable surfaces)."

That sounds to me as if a driveway is fully counted towards the floor space index, no matter what it consists of. Gravel, grass pavers, trike design. Can the floor space index of a driveway be influenced in any way at all?

As far as I know, this refers to the building plot. Nearby in Lower Saxony, for example, gravel surfaces do not count towards the floor space index at all, because: no sealing. Can you also address the inquiry about floor space index || Par. 34? That contradicts itself. Or did I overlook it?