Hello everyone,
I hope you can help me a bit.
We could move into my partner’s childhood home, but we would need more space than is currently available.
The house is one story with a basement, ground floor, first floor, and an attic that is not finished.
We would like to move into the first floor but want to add an extension.
That means we want to build a solid garage at the ground floor level and put an extension above it. The side length of the house is about 8 meters (26 feet).
On the first floor, this would give us effectively one large room or two smaller ones.
Now my question is: is something like this even possible? And what would it roughly cost?
I know it’s difficult to estimate costs like this, but an approximate figure would be helpful.
I’m particularly interested in whether it would cost more or less than 50,000 euros.
No roof extension would be made.
It would be great if someone could assist me.
Best regards
I hope you can help me a bit.
We could move into my partner’s childhood home, but we would need more space than is currently available.
The house is one story with a basement, ground floor, first floor, and an attic that is not finished.
We would like to move into the first floor but want to add an extension.
That means we want to build a solid garage at the ground floor level and put an extension above it. The side length of the house is about 8 meters (26 feet).
On the first floor, this would give us effectively one large room or two smaller ones.
Now my question is: is something like this even possible? And what would it roughly cost?
I know it’s difficult to estimate costs like this, but an approximate figure would be helpful.
I’m particularly interested in whether it would cost more or less than 50,000 euros.
No roof extension would be made.
It would be great if someone could assist me.
Best regards
First of all, I would consider whether you REALLY want to move into a two-generation household!
Now, regarding your costs, there are too many unknowns to give a clear answer. The factors that cost money and are relevant for an estimate include:
- Own labor?
- Living standards? (For example, you can already spend €50,000 (about $55,000) on just the kitchen and bathroom without high demands)
- Staircase
- Does the roof still need complete insulation?
- Roof windows are not cheap but have poorer insulation
- Electrical work
- What does the general structural engineering say?
- Is the heating system sufficient, or will a second or entirely new system be needed?
- Water/sewage and heating connections will also entail remodeling on the ground floor
- Is the extension allowed by building permit / planning permission?
- Where do you live? Does the extension require extensive earthworks or even piling?
Roughly speaking, if everything goes as planned, you do all the work yourself, and you can live with basic building materials from DIY stores, €50,000 (about $55,000) might be enough. If any of these points are not feasible, costs can quickly increase by tens of thousands.
Now, regarding your costs, there are too many unknowns to give a clear answer. The factors that cost money and are relevant for an estimate include:
- Own labor?
- Living standards? (For example, you can already spend €50,000 (about $55,000) on just the kitchen and bathroom without high demands)
- Staircase
- Does the roof still need complete insulation?
- Roof windows are not cheap but have poorer insulation
- Electrical work
- What does the general structural engineering say?
- Is the heating system sufficient, or will a second or entirely new system be needed?
- Water/sewage and heating connections will also entail remodeling on the ground floor
- Is the extension allowed by building permit / planning permission?
- Where do you live? Does the extension require extensive earthworks or even piling?
Roughly speaking, if everything goes as planned, you do all the work yourself, and you can live with basic building materials from DIY stores, €50,000 (about $55,000) might be enough. If any of these points are not feasible, costs can quickly increase by tens of thousands.
Hello,
thank you very much for your reply. Yes, I know that building a two-generation house is definitely something to consider carefully. Since we already have a finished apartment, this shouldn’t be much of an issue.
Regarding your suggestions:
- Own work?
We will renovate the living areas ourselves. The construction of the garage and the extension will probably be done by a company, but I can’t say for sure yet.
- Living standard? (for example, you can easily spend €50,000 on kitchen and bathroom without high demands)
Our living standard is rather average. We have planned to spend about €20,000 on renovations and furniture altogether.
- Stairs
My partner works in windows, stairs, and door construction, so he can build the stairs himself; we would only pay for materials.
- Does the roof need to be fully insulated?
Since we don’t live under the roof, nothing needs to be done to the roof. The roof would be an additional floor.
- Roof windows are not cheap but offer worse insulation
see above
- Electrical
We know an electrician who could install the wiring for the two rooms and the garage.
- What about the general structural stability?
Hmm, I think the structural stability is great???
- Is the heating system sufficient, or will a second or new one be needed?
The heating system in the house is new. However, I don’t know if a new one is needed for the two additional rooms.
- Water/sewage and heating connections will also require remodeling on the ground floor.
Yes, I think so too.
- Is the extension permitted?
The property belongs to my father. I don’t know if a building permit (planning permission) is needed for this.
- Where do you live? Will significant earthworks or even piling be necessary for the extension?
We live on a normal street; earthworks will be necessary but only up to about 2 meters (6.5 feet) of trenching.
I have absolutely no experience with construction. My idea was to build a solid garage for about €10,000 and then add an extension above it for about €20,000. Keep renovation costs at around €20,000, so the total would be €50,000.
If it becomes more expensive than that, it might be better to just buy a house.
Best regards
thank you very much for your reply. Yes, I know that building a two-generation house is definitely something to consider carefully. Since we already have a finished apartment, this shouldn’t be much of an issue.
Regarding your suggestions:
- Own work?
We will renovate the living areas ourselves. The construction of the garage and the extension will probably be done by a company, but I can’t say for sure yet.
- Living standard? (for example, you can easily spend €50,000 on kitchen and bathroom without high demands)
Our living standard is rather average. We have planned to spend about €20,000 on renovations and furniture altogether.
- Stairs
My partner works in windows, stairs, and door construction, so he can build the stairs himself; we would only pay for materials.
- Does the roof need to be fully insulated?
Since we don’t live under the roof, nothing needs to be done to the roof. The roof would be an additional floor.
- Roof windows are not cheap but offer worse insulation
see above
- Electrical
We know an electrician who could install the wiring for the two rooms and the garage.
- What about the general structural stability?
Hmm, I think the structural stability is great???
- Is the heating system sufficient, or will a second or new one be needed?
The heating system in the house is new. However, I don’t know if a new one is needed for the two additional rooms.
- Water/sewage and heating connections will also require remodeling on the ground floor.
Yes, I think so too.
- Is the extension permitted?
The property belongs to my father. I don’t know if a building permit (planning permission) is needed for this.
- Where do you live? Will significant earthworks or even piling be necessary for the extension?
We live on a normal street; earthworks will be necessary but only up to about 2 meters (6.5 feet) of trenching.
I have absolutely no experience with construction. My idea was to build a solid garage for about €10,000 and then add an extension above it for about €20,000. Keep renovation costs at around €20,000, so the total would be €50,000.
If it becomes more expensive than that, it might be better to just buy a house.
Best regards
Hmm, I understood that the house has one story plus a basement, and then the roof! But apparently, it has two full stories and then an attic, right? Why don’t you want to use the second floor and the attic? Or is there a flat roof on top?
Is there anything already installed on your floor? (windows/electrical/walls/heating)
Also, even if the apartment is separate, you are basically living with your parents. It’s worth considering whether the space will really be enough in the long term, as it seems we are talking about around 70m² (750 sq ft).
Oh, and for an extension you need a building permit/planning permission, including planning fees, permit costs, groundwork, and completion by a company. Including garage door/entrance door and windows, I think a budget of €30,000 looks unrealistic.
Is there anything already installed on your floor? (windows/electrical/walls/heating)
Also, even if the apartment is separate, you are basically living with your parents. It’s worth considering whether the space will really be enough in the long term, as it seems we are talking about around 70m² (750 sq ft).
Oh, and for an extension you need a building permit/planning permission, including planning fees, permit costs, groundwork, and completion by a company. Including garage door/entrance door and windows, I think a budget of €30,000 looks unrealistic.
Hey,
just a quick explanation.
Currently, the house is occupied by the father and the brother. The first floor (1st floor / first floor) is lived in by the brother. Both floors are fully finished; they only need renovation.
The attic is planned to be converted for the younger brother, but we are not involved in that, which is why we need to build an extension.
With the extension, the living area would be around 90 to 100 meters² (970 to 1,076 square feet).
The architect wouldn’t cost us much, as he is a family friend.
The plan for the future is:
Ground floor: father
First floor: me and my partner
Attic: brother
The extension will be added to the first floor.
Then the brother can build a terrace on top of our extension.
Best regards
just a quick explanation.
Currently, the house is occupied by the father and the brother. The first floor (1st floor / first floor) is lived in by the brother. Both floors are fully finished; they only need renovation.
The attic is planned to be converted for the younger brother, but we are not involved in that, which is why we need to build an extension.
With the extension, the living area would be around 90 to 100 meters² (970 to 1,076 square feet).
The architect wouldn’t cost us much, as he is a family friend.
The plan for the future is:
Ground floor: father
First floor: me and my partner
Attic: brother
The extension will be added to the first floor.
Then the brother can build a terrace on top of our extension.
Best regards
6
6Richtige29 Oct 2009 00:57Hello RecodC,
how many meters (feet) is the distance between the existing house and the property boundary?
how many meters (feet) is the distance between the existing house and the property boundary?
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