Before rushing directly to a lawyer, the following might help:
Draft a letter in which the defects are described as precisely as possible, preferably with photos and find witnesses:
Hereby we inform you about the following defects in our construction project (address, customer number, etc.):
- A is not in order
- B is not in order
- .....
We demand that you submit a binding declaration by (approximately 2 weeks later, specify the exact date, e.g. August 30, 2018), recognizing the aforementioned defects and your warranty obligation for these defects and present suitable proposals for defect remediation.
For the final remediation of the defects, we set a deadline (another suitable deadline) until September 14, 2018.
If it is not possible for you to remedy the defects within the aforementioned deadline, we ask you to inform us by when, in your opinion, the defect remediation can be carried out.
If the above-mentioned deadlines pass without result, we will have the defects remedied by self-performance.
Sincerely
...
If the company does not respond by the first deadline (here August 30), it is in default and you are entitled to claim default costs (i.e. attorney fees). Since the company apparently does not respond anymore, this would be an easy attempt to obtain legal advice AFTER the first deadline expires free of charge. Before proceeding with self-performance, especially in case of higher costs, I would first go to a lawyer after the expiration of the first deadline. Oh, and send the letter by registered mail with return receipt, possibly scan it with a signature beforehand and send the PDF by email to the builder. It is best to have a witness present when you drop the letter off at the post office.
