SoL
2022-01-18 02:56:08
- #1
Hello everyone,
We want to fundamentally renovate our house from 1930 in ZIP code 38xxx, insulate it, and expand the attic for additional living space. In this process, we will also renew the guest WC and divide some rooms...
Now we have finally received the preliminary draft from our architect for our house. I’ll spare you the proposed floor plans for now, as in my opinion, they are very much in need of improvement.
For understanding the cost estimate, it should be said that our architect wants to close the access to our basement from the inside for thermal protection reasons and create a separate external access.
In the past, our architect forgot to include the tiles and the laying in the cost estimate, I had to point out errors in the KfW subsidy calculation, and he wanted to create a ventilation concept after renovation based solely on window casement vents, even though I clearly stated from the beginning that I want a residential ventilation system.
Strangely, according to the cost estimate, we exactly meet our maximum budget...
My trust in the estimate is therefore not very high.
What I would be interested in is whether you consider the unit prices in the cost estimate to be realistic or not, and which work might be completely missing.
I am missing:
- Painting / filling work
- Laying / piping work for controlled residential ventilation
- Electrical work (possibly included as a lump sum in the socket price?)
...
The prices seem low to me among others in:
- Windows
- Doors
...
Just to clarify: For me, a "Budget is not sufficient" result from the preliminary draft is more valuable than a preliminary draft that looks nice at first but where the costs later explode.
Many thanks in advance
SoL

We want to fundamentally renovate our house from 1930 in ZIP code 38xxx, insulate it, and expand the attic for additional living space. In this process, we will also renew the guest WC and divide some rooms...
Now we have finally received the preliminary draft from our architect for our house. I’ll spare you the proposed floor plans for now, as in my opinion, they are very much in need of improvement.
For understanding the cost estimate, it should be said that our architect wants to close the access to our basement from the inside for thermal protection reasons and create a separate external access.
In the past, our architect forgot to include the tiles and the laying in the cost estimate, I had to point out errors in the KfW subsidy calculation, and he wanted to create a ventilation concept after renovation based solely on window casement vents, even though I clearly stated from the beginning that I want a residential ventilation system.
Strangely, according to the cost estimate, we exactly meet our maximum budget...
My trust in the estimate is therefore not very high.
What I would be interested in is whether you consider the unit prices in the cost estimate to be realistic or not, and which work might be completely missing.
I am missing:
- Painting / filling work
- Laying / piping work for controlled residential ventilation
- Electrical work (possibly included as a lump sum in the socket price?)
...
The prices seem low to me among others in:
- Windows
- Doors
...
Just to clarify: For me, a "Budget is not sufficient" result from the preliminary draft is more valuable than a preliminary draft that looks nice at first but where the costs later explode.
Many thanks in advance
SoL