For a single permit lookup or anything requiring official confirmation — issuance, occupancy sign-off, final inspection — the Simi Valley Customer Self Service (EnerGov) is the source of record. Go directly to the City of Simi Valley portal for those.
For ongoing monitoring across multiple Simi Valley permits, a third-party service such as SignedOff reduces manual lookups and surfaces published status changes by email. The typical use case is a contractor, architect, or project manager with several active Simi Valley jobs across different systems or stages where checking each official source daily is impractical.
Both tools draw from the same underlying permit record — the Simi Valley Customer Self Service (EnerGov) is always the system of record; SignedOff is a monitoring layer on top of it.