ᐅ Are Additional Costs for Building on a Sloped Plot Predictable?
Created on: 3 Dec 2019 07:46
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BauherrFranken
Supply and demand are currently driving our frustrating search for a plot of land. We have finally found one, but it is being offered privately at a price well above the official land value estimates.
It is a south-facing slope plot, located above the street. Would you consider the additional costs related to the hillside location (site setup, excavation) to be predictable?
It is a south-facing slope plot, located above the street. Would you consider the additional costs related to the hillside location (site setup, excavation) to be predictable?
Crossy schrieb:
Earthworks are a separate item.
530 sqm (5705 sq ft) of topsoil to be stripped and stored on the side, average removal depth 20 cm (8 inches) – 950 EUR
650 m³ (860 cubic yards) of soil to be excavated according to the excavation profile for the foundation pit and stored on the side, excavation depth up to 3.50 m (11.5 ft) – 4500 EUR
300 tons of limestone gravel delivered free to the construction site, installed and compacted in layers as a base material under the slab, on paved exterior areas, and in the working area of the support angle – 6900 EUR
85 tons of limestone chippings 8/16 mm (0.3/0.6 inches) delivered free to the construction site and installed in a single layer as a capillary-breaking layer under the slab – 2650 EUR
and then a few smaller items such as dimpled membrane, site setup (1000 EUR), geotextile (860 EUR)
We will initially store the excavated material on the property and after backfilling and landscaping, we will see if there is much leftover (probably not much).
The plot is large enough, 1400 sqm (15,070 sq ft).
Does anyone know if limestone gravel is better than recycled gravel?
Recycled gravel is listed as a contingency and is cheaper than limestone gravel (both 0/60). Are you sure? Do you really want to store that amount of soil on your property? That rarely ends well.
Regarding the price for the limestone, that seems about right; we paid around 4000 EUR five years ago for 8 meters (length).
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hampshire9 Dec 2019 08:23Of course, your ge
tomtom79 schrieb:Valid point, with a 1400 m² (15,100 sq ft) plot, storing and working in 650 m³ (23,000 cu ft) is a very large amount.
Are you sure? Do you really want to store that much soil on your property? That will never work out.
We also have the option to transport 300 m³ (approximately 390 yd³) to another plot on the same street, as they need the soil for backfilling. However, I don’t think we will need to move that much. So for now, we are waiting to see how much remains after backfilling.
The house will be built on a slope. We are positioning it slightly above street level, so the northern corner of the basement will be exactly at ground level. However, the southwest corner of the basement lies 1.3 m (4.3 ft) below ground level. From the building edge to the southwestern end of the plot, there is still 21 m (69 ft) of land that slopes down gently; this area will be filled. We will see how much soil it will take. This will be our lawn area. (So approximately 1.3 m (4.3 ft) raised over 21 m (69 ft) length and 15–20 m (49–66 ft) depth, plus working space, plus some soil in front of the house for leveling.)
If the volume cannot be stored on the property, it will be transported to the neighboring plot instead. The cost for 300 m³ (approximately 390 yd³) will be about 1900 EUR. This is still reasonable since it looks like we won’t need to take anything to the landfill.
The house will be built on a slope. We are positioning it slightly above street level, so the northern corner of the basement will be exactly at ground level. However, the southwest corner of the basement lies 1.3 m (4.3 ft) below ground level. From the building edge to the southwestern end of the plot, there is still 21 m (69 ft) of land that slopes down gently; this area will be filled. We will see how much soil it will take. This will be our lawn area. (So approximately 1.3 m (4.3 ft) raised over 21 m (69 ft) length and 15–20 m (49–66 ft) depth, plus working space, plus some soil in front of the house for leveling.)
If the volume cannot be stored on the property, it will be transported to the neighboring plot instead. The cost for 300 m³ (approximately 390 yd³) will be about 1900 EUR. This is still reasonable since it looks like we won’t need to take anything to the landfill.