The offer is statutory in nature, and the amount of time to accept cannot be modified. If you want to put the pressure on the other side, make an informal offer and give them 5 days.
No, you cannot change the statutory time limits set forth under CA Code of Civil Procedure section 998. If you want to make a settlement offer with only a 5 court day acceptance period, you just make a written offer without following CCP 998.
Frank W. Chen has been licensed to practice law in California since 1988. The information presented here is general in nature and is not intended, nor should be construed, as legal advice for a particular case. This Avvo.com posting does not create any attorney-client relationship with the author. For specific advice about your particular situation, please consult with your own attorney.