Pennsylvania · 49 P.S. §1501 (Mechanic’s Lien Law of 1963)
Lien Clock runs.
No CA prelim — formal notice then 6-month claim

Pennsylvania does not use a 20-day prelim. A formal notice of intention to file and then a claim within six months after last work is the path. We serve that notice and calendar the claim.
Start the clock · We draft. You approve. We send.