Hi @ all,
we have reserved a plot of land in Lampertheim (Hessen).
It has an area of 428 sqm (4605 sq ft).
Previously, there was a scrapyard/recycling center on the site, so the city has now excavated the entire area by approximately 1.80 m (6 feet). This means it would first need to be filled up again by about 1.80 m (6 feet). The road is almost finished.
The question now is, which would be more cost-effective: this filling or perhaps building a basement?
We want to build with a prefab house manufacturer, and the house will have external dimensions of about 9 x 11 m (30 x 36 ft), so approximately 140–150 sqm (1500–1600 sq ft) of living space.
What would the approximate costs be for such filling? Or for a finished basement?
Thanks and regards,
Sven
we have reserved a plot of land in Lampertheim (Hessen).
It has an area of 428 sqm (4605 sq ft).
Previously, there was a scrapyard/recycling center on the site, so the city has now excavated the entire area by approximately 1.80 m (6 feet). This means it would first need to be filled up again by about 1.80 m (6 feet). The road is almost finished.
The question now is, which would be more cost-effective: this filling or perhaps building a basement?
We want to build with a prefab house manufacturer, and the house will have external dimensions of about 9 x 11 m (30 x 36 ft), so approximately 140–150 sqm (1500–1600 sq ft) of living space.
What would the approximate costs be for such filling? Or for a finished basement?
Thanks and regards,
Sven
P
Peanuts7421 Apr 2016 07:01BeHaElJa schrieb:
Do you want a basement? Bringing in soil isn’t that expensive...
Have you had the ground tested – or do you have proof that the soil is clean?Uh, just bringing in soil won’t be enough. If a house is going to be built on it, the soil needs to be properly compacted. I’m not sure if using only fill sand is sufficient; if the ground needs to be completely filled and compacted with gravel, the costs can quickly reach five figures.
A basement would, of course, be even more expensive, since some excavation will likely be necessary.
However, if you use the basement for storage and a utility room, you might be able to build a slightly smaller house, which reduces the overall difference in cost.
In the end, I would say a basement is definitely more expensive but very sensible given these conditions.
It depends on your ground conditions -> If you don’t have load-bearing soil, you will need to excavate more than the usual 80 - 120 cm (31 - 47 inches) and then refill with gravel.
This makes building a basement significantly more expensive. If you have 80 cm (31 inches) of good soil, the additional cost will be relatively low.
A prefabricated basement of this size, used solely as a utility basement, costs around 50,000 € (without a waterproof concrete shell). On top of that, there are extra excavation and related costs.
The concrete slab foundation plus backfilling will be considerably cheaper!
This makes building a basement significantly more expensive. If you have 80 cm (31 inches) of good soil, the additional cost will be relatively low.
A prefabricated basement of this size, used solely as a utility basement, costs around 50,000 € (without a waterproof concrete shell). On top of that, there are extra excavation and related costs.
The concrete slab foundation plus backfilling will be considerably cheaper!
P
Peanuts7421 Apr 2016 07:51I always assumed that when basement costs of around €50,000 were mentioned here, the excavation was already included—that is, all costs related to the basement. Ours is masonry-built and cost about €25,000 (pure shell construction costs). If it were a usable basement, I would add another €10,000 to €15,000, but that should be enough (depending on the size). So, roughly €40,000 for the basement corresponds to approximately €10,000 to €15,000 for the fill. There is also the option to build somewhat smaller (with technical installations in the basement), which in turn means you can have more usable land on your property.
Hello, with €40,000 for the basement, that probably won’t be enough. I just received the offer for our basement. No major extras, but watertight, and compliant with the 2016 Energy Saving Ordinance—no KfW funding. The price is around €70,000 (approximately 80 m² (860 sq ft) of area).
P
Peanuts7421 Apr 2016 08:51I don’t quite understand, for us the entire shell construction (1.5 stories plus basement) including the roof cost about €100,000 (approximately $108,000)? How can just the basement alone cost €70,000 (about $75,600)? Even if it’s fully plastered and tiled at around €70/m² (about $7.60/sq ft), I still find that quite steep.
S
Sebastian7921 Apr 2016 08:59Then you have a cheap shell builder – with the roof covered, I would expect around 160,000 EUR.
The basement was broken down at around 60-65,000 EUR – so basically bare. But the shell height was 250 cm (8 ft 2 in) and designed more as a living basement (including a landing staircase and a second staircase to the garage).
The basement was broken down at around 60-65,000 EUR – so basically bare. But the shell height was 250 cm (8 ft 2 in) and designed more as a living basement (including a landing staircase and a second staircase to the garage).
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