ᐅ Is it practical to build a prefabricated house using a solid construction floor plan?

Created on: 23 Sep 2024 22:50
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Skya2020
Hello everyone,

We have just purchased a plot of land in NRW. The previous owners had already hired an architect to fully oversee the construction using traditional masonry methods and have already paid over €50,000 (about $54,000) for phases 1-6. There is already a building permit / planning permission, so construction could start almost immediately.
However, we are planning to build using prefabricated construction and are now wondering how to proceed best. The previous owners have offered to sell us their plans. Either way, we would still need to modify them (aside from the exterior dimensions) to fit our requirements.
The plot is on a slope, and there aren’t many options for building on it, so the design would likely be very similar either way.
Does it make sense to buy the plans from the previous owners and then work with the architect to incorporate changes before approaching prefab house manufacturers? Or are the floor plans not very useful due to the different construction method, making it more reasonable to hire a different architect for a new design?
And if you were to buy the plans—how much would you pay (they don’t really have a strong bargaining position)?

We are completely at the beginning of our home-building journey, so I apologize if this is a naïve question... We just don’t really know the best way to start.
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Skya2020
26 Sep 2024 11:09
hanghaus2023 schrieb:

Thank you.

Who owns plot 744?

In the Bavaria Atlas, you can use a measuring tool to measure distances, and the system also shows the elevation profile.
Okay, I gave it a try and measured across the plot.

GS744, honestly, I have no idea. I assume it belongs to the city. Online, it is listed as 6m² (65 sq ft) designated for road traffic.
Map view with orange start and end points of a dashed line; elevation profile open.
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Skya2020
26 Sep 2024 11:17
And here is the other cross-section again
Elevation profile with red line and pink area, background map with parcels 1601/1602
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hanghaus2023
26 Sep 2024 11:21
That works well. Additionally, add two vertical lines on the east and west facades. Please use the site plan, not the topographic map.

Is there a zoning plan / development plan? If not, a larger map section would be helpful.
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hanghaus2023
26 Sep 2024 11:32
To me, it looks like someone has already done some modeling there. Or was there a house standing there before?
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Skya2020
26 Sep 2024 11:49
hanghaus2023 schrieb:

To me, it looks like someone has already done some modeling there. Or maybe there was a house there before?

The plot was originally the garden of the house below. Currently, you can only access our property via a staircase from the neighboring lot. It’s all quite overgrown.
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Skya2020
26 Sep 2024 12:10
hanghaus2023 schrieb:

That works well. Additionally, add 2 vertical lines on the east and west elevations. Please use the site plan, not the topographic map.

Is there a building permit / planning permission? If not, a larger map section would be helpful.
There is no building permit / planning permission. Or did you actually mean on the fictional house facade?
Map view of a residential area with plots, buildings, and streets; elevation profile overlay.

Map view with plots, orange boundary marker, and overlaid elevation profile window.