ᐅ Cost Estimate for Converting a 70 sqm Shell Structure into a Finished Apartment
Created on: 1 Jan 2024 22:12
D
Dendroaspis
Greetings,
Here’s the situation. My father-in-law received a rather devastating diagnosis some time ago and, well, he knows his time is now quite limited. He expressed the wish to spend his remaining years with us.
Since I have a large storage room or a spacious double garage available, which is currently used as a storage space, we quickly came up with the idea to convert it into an apartment.
We have very little experience with building work and are not really skilled enough to do much ourselves.
So, the question for us is about the possible costs. Of course, I understand that no one can give a precise estimate without knowing the specifics in person, but we are looking for a rough guideline. Should we be budgeting around 25,000, 50,000, or even 100,000?
Here are the details: converting 70 square meters (750 square feet) of storage/garage into an apartment. Apart from a few electrical cables for lights and electric garage doors or outlets, the space is essentially a shell. Bare 280 millimeters (11 inches) of reinforced concrete, unfinished.
The heating room and laundry room are directly adjacent, so only one wall each would need to be opened to run the necessary pipes.
So, three windows would need to be cut into the concrete, the garage door openings bricked up, about 10 meters (33 feet) of drywall installed, plumbing laid for the bathroom and kitchen, as well as electrical wiring. Everything would also need to be properly insulated and plastered. The existing floor tiles would have to be removed, the floor sanded and leveled, followed by the installation of impact sound insulation and vinyl flooring.
Writing this down now, I realize what we’re facing.
We’d like to have the entire project done by a qualified professional company.
Would you have an estimate of what this might approximately cost, including materials and labor?
Thank you in advance for your help. We’re currently unsure if the project is financially feasible.
Best regards,
Peter
P.S.: Wishing you all a happy New Year!
Here’s the situation. My father-in-law received a rather devastating diagnosis some time ago and, well, he knows his time is now quite limited. He expressed the wish to spend his remaining years with us.
Since I have a large storage room or a spacious double garage available, which is currently used as a storage space, we quickly came up with the idea to convert it into an apartment.
We have very little experience with building work and are not really skilled enough to do much ourselves.
So, the question for us is about the possible costs. Of course, I understand that no one can give a precise estimate without knowing the specifics in person, but we are looking for a rough guideline. Should we be budgeting around 25,000, 50,000, or even 100,000?
Here are the details: converting 70 square meters (750 square feet) of storage/garage into an apartment. Apart from a few electrical cables for lights and electric garage doors or outlets, the space is essentially a shell. Bare 280 millimeters (11 inches) of reinforced concrete, unfinished.
The heating room and laundry room are directly adjacent, so only one wall each would need to be opened to run the necessary pipes.
So, three windows would need to be cut into the concrete, the garage door openings bricked up, about 10 meters (33 feet) of drywall installed, plumbing laid for the bathroom and kitchen, as well as electrical wiring. Everything would also need to be properly insulated and plastered. The existing floor tiles would have to be removed, the floor sanded and leveled, followed by the installation of impact sound insulation and vinyl flooring.
Writing this down now, I realize what we’re facing.
We’d like to have the entire project done by a qualified professional company.
Would you have an estimate of what this might approximately cost, including materials and labor?
Thank you in advance for your help. We’re currently unsure if the project is financially feasible.
Best regards,
Peter
P.S.: Wishing you all a happy New Year!
A
Allthewayup2 Jan 2024 13:03Dendroaspis schrieb:
Hello,
Thank you very much for your answers.
This isn’t really an outbuilding, but the basement of our house. At that time, a solid basement was built, and then a prefabricated house was placed on top. So, nothing protrudes or anything like that—it is essentially our above-ground basement. Until the pandemic, the double garage was used as storage space for my company.
With costs of €2,000–2,500 per square meter, we probably have to drop the project.
Best regards,
Peter That doesn’t necessarily make it easier. Is this garage/basement part of the building’s thermal envelope? Are there any building plans (elevations, floor plans, sections, etc.) available to better visualize the situation? It becomes difficult from a permitting perspective if you cannot replace the lost parking spaces elsewhere on your own property. In our area, one parking space per apartment and two parking spaces per single-family home on the property are now mandatory.
Long story short: invite a few local contractors to provide quotes. I think there should be no shortage of interest from builders for new projects nowadays.
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