How long do I have to sue over written contract in California?
Answered for: California
337. Within four years: (a) An action upon any contract, obligation or liability founded upon an instrument in writing, except as provided in Section 336a
The statute states 4 years for written contract. When that clock starts, and whether it can be paused, are separate questions this entry does not answer.
This answer is true in California and nowhere else on this site. Another jurisdiction is another answer, or an honest gap: see what has been read for California.