Financing single-family house construction approximately 140 sqm

Who is your developer? Local or one of the big ones?

Who is your builder? Local or one of the big ones?

Timber frame prefabricated construction, one of the big ones. Hanse Haus would be our choice.

Civil engineering is a big unknown without a soil survey and knowledge of the connections at the street.

The estimated costs sound reasonable to me at first – provided no nasty surprises are lurking in the ground. Then it can quickly become noticeably more expensive.

Soil survey already done?

Is real estate transfer tax and broker fee included anywhere?

I would clarify two things beforehand. First, find out how deep the pipes are (for example, the office responsible for drainage told us that the supply lines at the street of our property are almost 5m deep – that makes civil engineering predictably much more expensive). Second, a soil survey to rule out surprises.

Civil engineering is a big unknown without a soil survey and knowledge of the street connections.

The estimated costs sound reasonable to me at first - as long as there is no nasty surprise in the ground. Then it can quickly become noticeably more expensive.

Soil survey done yet?

Is real estate transfer tax and broker included somewhere?

I would clarify two things beforehand. First, find out how deep the pipelines lie (for example, the office responsible for drainage informed us that at our property the supply lines at the street are almost 5m deep - that makes civil engineering predictably much more expensive). Second, soil survey to exclude surprises.

Civil engineering is a big unknown without a soil survey and knowledge of the street connections.

The estimated costs sound reasonable to me at first - as long as there is no nasty surprise in the ground. Then it can quickly become noticeably more expensive.

Soil survey done yet?

Is real estate transfer tax and broker included somewhere?

I would clarify two things beforehand. First, find out how deep the pipelines lie (for example, the office responsible for drainage informed us that at our property the supply lines at the street are almost 5m deep - that makes civil engineering predictably much more expensive). Second, soil survey to exclude surprises.

It is a new development area, the lines will probably still be partially laid, the house connection costs up to the property were already allocated by the city and we pay our share with the purchase. They probably won’t be that deep?
So far only a soil survey from the city, we still have to have one done. Frost apron will probably be added as well.

No commission to brokers, real estate transfer tax for the municipal property is included, notary costs too.

Thank you for your feedback!

On our property, one of several dynamic cone penetrometer tests was conducted; I ran this through ChatGPT.

The analysis of the results for the dynamic cone penetrometer test RKS 13 provides the following information:

1. Layer structure at RKS 13

• Topsoil (up to 0.6 m below ground surface, GOK):

• The upper layers consist of medium sand (mS), fine sand (fS), and silt (u). These materials are loosely to moderately dense.

• Middle depth (up to approx. 4.4 m below GOK):

• Predominantly silt (U) with shares of fine sand (fS). These layers are plastic and poorly permeable to water.

• Deep layers (from approx. 4.4 m below GOK):

• The marl (KM) begins here. It is strongly weathered in the upper part but becomes firmer at depth. Marl is load-bearing but poorly permeable to water.

2. Groundwater

• The measured groundwater level is at 2.24 m below GOK (73.65 m NHN). This value indicates that the location is moderately moist.

• No hydrostatic groundwater was detected that could pose construction challenges.

3. Recommendations for site RKS 13

1. Load-bearing capacity of the building ground:

• The building ground is load-bearing. A standard slab-on-grade can be used without any problems. Additional stabilization is not required.

2. Drainage:

• Due to the poorly permeable marl layer, temporary water accumulations may occur during heavy rain. Drainage may be advisable to divert water away from the slab-on-grade.

3. Sealing:

• Sealing against rising moisture is recommended for the slab-on-grade since the silt in the upper layers can retain moisture.

Conclusion for site RKS 13

• The site is suitable for the construction of a slab-on-grade without a basement.

• Temporary waterlogging is possible but can be easily managed with appropriate drainage and sealing.

• There are no indications of contaminated sites or other hazards.

Signed the contract for the house the day before yesterday. Now it's time to keep our fingers crossed that the BZA comes quickly and the funding is approved.