Cultivation - Cost Estimation

  • Erstellt am 2016-01-11 16:29:24

Xorrhal

2016-01-20 11:46:58
  • #1
Hello,

I have meanwhile received a few additional pieces of information:

The responsible building authority agrees to the project. The statics of the existing extension allow for the additional storey without any problems.

The roofer was here and said that the pitch of a new roof will no longer allow for a tiled roof. So we have to switch to a - as he called it - sandwich roof - for which the existing framework can probably no longer be used much. Furthermore, he said an additional concrete ceiling would have to be placed on the added floor, which, in terms of cost, would not make much difference because it would replace insulation. Overall, he estimates about €25,000–30,000 - however, this does not include insulation of the facade - which is not included in the price.

The heating engineer was here, he said the existing heating system can be used without problems and can also easily supply the new extension with underfloor heating. We can install the underfloor heating boards ourselves. He estimates the new bathroom with my equipment wishes at about €12,000–13,000 - this already includes lighting, stretch ceiling, heated towel rail - what would still be missing are the tiles, which we will also lay ourselves. The costs for the underfloor heating are likely around €7,000 - we paid that for exactly the same size in the existing extension 1.5 years ago; that probably will not change much. He estimated the remaining work (drainage, supply lines, ...) at a maximum of €5,000 - so I’m probably on the safe side with €25,000 here.

The floor layer has made me an offer of around €7,000 for dry screed panels on the underfloor heating, impact sound insulation underneath, vapor barrier and so on, as well as linoleum flooring throughout the entire extension except the bathroom. That sounds pretty good so far.

Questions:

1. What should I calculate for the dismantling? Or whom do I ask for that? Roofer as well?
2. What should I calculate for the masonry? Both for raising the ring beam to one level, as well as for the masonry of the extension?
3. How much does such a base slab cost? Do I really need two of them? Whom do I ask?
4. What do you roughly calculate for the windows? I think one nice large one in the bathroom, one in the bedroom, and a large glass sliding door of at least 2–3 m width to the balcony should be sufficient, right?

Regards,
Xorrhal
 

Bauexperte

2016-01-20 12:28:27
  • #2
Hello,


If he means a pitched or double-pitched roof under 23°, he is right.


So, that’s what he means…


With all due understanding that you want answers – no one here can provide that, especially since crystal balls are out of order.

You want to implement a lot with EL, so for you it makes sense to commission an architect (you need one anyway) and award individual trades; make sure it’s an architect familiar with renovations of existing buildings. Walk through the existing building with him, discuss the construction measure, and he will tell you what needs to be done and what the cost range will be. Where EL can be sensibly applied/used, and what has to be changed on the existing structure.

Regarding points 1 to 4, there are many question marks as there is no draft plan yet, no calculation of thermal protection. Until then, a lot can still happen or – as we say here in the Rhineland – a lot of water will still flow up the Rhine. What dismantling costs, I can’t say either, not even remotely estimate. For that, I would need the documents of the existing building, know what the site looks like, which materials were used, etc. I can also imagine that EL potential exists here – provided the scaffolder was on site.

Rhenish greetings
 

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