Have we considered everything? Looking for experiences :)

Do you need a gas connection? Even if you are building with a slab of 100-120 sqm, you won't get under that if you don't have to fill something in somewhere. As a layman, you can easily make a mistake here. It's not just the landfill costs but also the LAGA analysis, which has nothing to do with the soil report. That is another 800€ at best plus landfill costs. The network connection costs 2000-2500€, water another 2500€, gas if needed for heating also starting from 3000€.

In addition, there may be manufacturing costs that have nothing to do with development costs. These are paid to the municipal utility.

What is included with your general contractor in the site preparation? Construction power meter, toilet, construction road? Also, the amount of steel is usually lumped together for the offer as long as there is no structural engineering available, meaning something could still be added there.

Are the downpipes connected to the drainage? Is there a stair landing? What about the house base?

I think you haven't fully thought this through or clarified it yet, if you mentally included the house connections in the general contractor contract.

At least you have not yet reached the calculable end with your expenses, even if you know the costs for the house connections.

So should the civil engineering work regarding development be timed in such a way that the utility providers (electricity, telecom, and water) can lay their lines promptly? Because until now, it's been a big question mark for us as to when all this will take place...

Hello NattySchw86,

we also built in central Hesse and as far as the development was concerned, everything was completely unproblematic. Telekom always works together with the energy provider. Both coordinate their work with each other. The energy provider and the waterworks also know each other well – after all, they have developed several houses together. There was a joint on-site meeting together with our architect and construction manager. The energy provider had his red spray can with him and marked on the street where the development would take place from. The gentleman from the waterworks did the same with his blue spray can. For the development into the house, our construction manager had planned three differently sized empty conduits. The pipes for electricity and telecom were also used as planned. Only the gentleman from the waterworks wanted a different access because for him the conduit was 70 cm too deep. Apparently, there are some standards about how deep excavation is usually done during repairs. So a new core drilling in the basement was necessary here.
Our civil engineer also took care of the trench to the house. That was comparatively inexpensive (both the energy provider and the waterworks named their costs exactly in advance).
The day before the planned development, our civil engineer dug the trench. The next day the energy provider and waterworks came and took over their part. Finally, Telekom came and pulled their cable. Completely trouble-free.
Regarding the question of when the whole thing happens: The gentleman from the waterworks said they have very precise specifications: The shell of the building must be standing. But that also makes sense because you need a wall to which the water meter can be screwed. And the energy provider also needs a place for the house connection box, which is usually installed in a recess in the masonry.

Best regards

Axel

No, it actually doesn't make sense. Because the utility providers do their own thing anyway. They also have to open the street and therefore come with the excavator anyway. And as I already said, it is usually the case that the connection price already includes some meters flat rate whether you need them or not, you pay anyway. In the end, you pay twice, on the one hand your civil engineer and on the other hand the utility provider. And if you're unlucky and the trench doesn't meet the provider's specifications, they will dig it again according to their requirements.

So just let your civil engineer come and start as soon as possible, that has priority first.

Better find out what the requirements of the respective utility providers are for the house entry. With us, every provider wanted to have their own system.

Telekom said they only come to lay the lines. So we should plan empty conduits there. We will clarify electricity in the next few days – water is municipal, so we don't have to request anything until the property is even released.

Do you need a gas connection? Even if you build with a slab on the ground, you won't get under 100-120 sqm if you don't have to fill in somewhere. As a layperson, you can easily make a mistake there. It's not just the disposal costs but also the LAGA analysis, which has nothing to do with the building ground survey. In the best case, that's another 800€ plus disposal costs. The network connection costs 2000-2500€, water another 2500€, gas if needed for heating from 3000€.

In addition, there may be manufacturing costs that have nothing to do with development costs. These are paid to the municipal utility.

What is included with your general contractor in the site preparation? Construction power meter, toilet, construction road? Also, the amount of steel for the offer is usually lumped together as long as no statics are available, meaning there could still be additions.

Are the downpipes connected to the drainage? Is there a stair landing? What about the house plinth?

I think you haven’t fully considered or clarified all this yet, if you thought the house connections were included in the general contractor contract.

At least you haven’t reached the calculable end with your expenses yet, even if you know the costs for the house connections.

We have an air-water heat pump.

According to the site manager, he takes care of all pipes/connections up to the property boundary. From the property to the house, logically our responsibility begins.

The construction description states: costs for electricity, construction water, and mobile toilets are included in the fixed price.

Regarding the house itself, there shouldn’t be any major surprises. It’s a prefabricated solid construction house with a complete offer and itemized costs and, in my opinion, a well-listed construction description.

So it’s mostly about the few meters between the boundary and the house :)

Hello NattySchw86,

we also built in Central Hesse and regarding the development, everything was completely unproblematic. Telekom always works together with the energy supplier. Both coordinate their work with each other. The energy supplier and the waterworks also know each other well – after all, they have already developed several houses together. There was a joint on-site appointment together with our architect and construction manager. The energy supplier had his red spray can with him and marked on the street from where the connection would be made. The gentleman from the waterworks did the same with his blue spray can. For the connection to the house, our construction manager had planned three empty conduits of different thicknesses. The conduits for electricity and Telekom were used as planned. Only the gentleman from the waterworks wanted a different access because the conduit was 70 cm too deep for him. Apparently, there are some standards regarding how deep is usually excavated during repairs. So here a new core drilling in the basement was necessary. Our civil engineer took care of the trench to the house as well. That was comparatively inexpensive (both the energy supplier and the waterworks named their costs exactly in advance). The day before the planned connection, our civil engineer dug the trench. The next day, the energy supplier and waterworks were there and took over their part. Finally, Telekom came and pulled their cable. Completely trouble-free. Regarding the question of when this whole thing happens: The gentleman from the waterworks said they have very precise requirements: The shell of the building must be standing. But that makes sense because you do need a wall where the water meter can be screwed on. And the energy supplier also needs a place for the house connection box, which is usually installed in a recess in the masonry.

Best regards

Axel

Yes, it definitely makes sense if the shell is already standing :) Telekom is already in progress. We will clarify Ovag in the next few days. I then assume that the actual civil engineering work for the connections will either be organized by ourselves or carried out by the water supplier? In our building description, I just read that costs for earthworks regarding connections are the homeowner’s responsibility. But I think it can certainly be arranged with them to have it included. May I ask roughly how much water/sewage, electricity and Telekom cost you?

May I ask what water / sewage, electricity and telecommunications roughly cost you?

Sure, but please don't be shocked, it's 14 meters from the street to the house. Here are the rounded amounts:

Water: 3,550
Sewage: 5,100
Electricity: 1,500
Telecommunications: 800

Best regards

Axel