JD
Justin Brooks Demerath
Justin Brooks Demerath is a lawyer in Austin, TX who works for O'Hanlon, Demerath & Castillo, P.C.. Court admissions include Texas Western District Court. Licensed in Texas since 2002. Graduated from Southern Methodist University in 2001.
Claim profileContact attorney
Law school
Bar admission
Office
Disciplinary
JD
Justin Brooks Demerath
O'Hanlon, Demerath & Castillo, P.C.Austin, TX·24 years licensed
Claim profileContact attorney
Justin Brooks Demerath is a lawyer in Austin, TX who works for O'Hanlon, Demerath & Castillo, P.C.. Court admissions include Texas Western District Court. Licensed in Texas since 2002. Graduated from Southern Methodist University in 2001.
Law school
Southern Methodist University
Class of 2001
Bar admission
2002
State Bar of TX · No. 24034415
Office
808 West Ave
Austin, TX 78701
Disciplinary
None on record
Clean since admission
Case data
Case data
Click “Load case data” above to view charts.
Practice & jurisdiction
Courts admitted
- Texas Western District Court
Reviews
No reviews yet. Be the first →
Last refreshed Jun 2026