CA AB1673

Expands the definition of "contribution" under the Political Reform Act of 1974 to include payments made by a lobbyist or cohabitant of a lobbyist for costs related to fundraising events held at the lobbyist's home, including the value of using the home as a venue.

Requires payments by lobbyists for home-based fundraising events to be attributable to the lobbyist for purposes of the prohibition against lobbyists making contributions to certain candidates and elected officers.

Includes payments made by a lobbying firm for costs related to fundraising events held at the lobbying firm's office, including the value of using the office as a venue.

Declares that no state reimbursement is required for local agencies or school districts because any costs incurred result from creating a new crime or changing penalties for existing crimes under the Political Reform Act.