dealing with landlord Won't Fix construction defect in new home: Options?

I publish illustrative scenarios prepared by my practice. All participants and conversations are fictional. The fictional posts are not posts by real users, accounts of client experiences, or reports of actual results.
Illustrative scenario prepared by my practice.
For informational purposes only. This is not legal advice. Laws vary by jurisdiction. Consult a qualified attorney for advice specific to your situation.
Hypothetical question

Quick background on my situation — any input appreciated.

construction defect in new home. I've been dealing with this for about 3 weeks now and the situation isn't improving.

I have been renting for 3 years. My monthly rent is $1,443. I have a written lease.

What are my legal options here? Is it worth pursuing?