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Williamson Act Program - Laws, Regulations & Court Cases 

Recent Legislative Amendments

As part of its outreach efforts, the Department of Conservation's Division of Land Resource Protection  provides an annual summary of new legislation affecting the California Land Conservation (Williamson) Act. Below is a summary of recent legislative changes along with links to the chaptered legislation from the Official California Legislative Information website.

Effective Date Legislation Subject(s)
January 1, 2007 AB 797, Wolk, Chapter 547, statutes of 2006 Easement exchanges in the Sacramento-San Joaquin delta area
January 1, 2006 AB 365, Salinas, Chapter 605, Statutes of 2005 Greenhouse Status under Williamson Act
SB 49, Machado, Chapter 245, Statutes of 2005 Assessor Review of Property Valuation
January 1, 2005 SB 1820, Machado, Chapter 794, Statutes of 2004 Current Fair Market Evaluation for Cancellation Fee Determination and Review
January 1, 2004 AB 1492, Laird, Chapter 694, Statutes of 2003 Williamson Act Contract Cancellation Alternative, Lot Line Adjustments
January 1, 2003 AB 1997, Thomson, Chapter 613, Statutes of 2002 Open-Space, Conservation and Agricultural Easements
  AB 137, Reyes, Chapter 188, Statutes of 2002 Williamson Act Contract Protest: Record of Filing
  SB 1515, Machado, Chapter 174, Statutes of 2002 Mello-Roos Community Facilities District
  SB 1864, Costa, Chapter 616, Statutes 2002 Lot Line Adjustments
  AB 2370, Thomson, Chapter 614, Statutes of 2002 Local Agency Formation Commission: Sphere of Influence
January 1, 2002 SB 497, Sher, Chapter 873, Statutes of 2001 Lot Line Adjustments
January 1, 2001 AB 1944, Wayne, Chapter 889, Statutes of 2000 Williamson Act Contract Cancellation
Compatible Uses
AB 2838, Hertzberg, Chapter 761, Statutes of 2000 Local Agency Formation Commissions
SB 2204, Soto, Chapter 431, Statutes of 2000 Agricultural Conservation Easements in San Bernardino and Riverside Counties
AB 2698, Florez, Chapter 1045, Statutes of 2000 Proceeding to Contest Certain Contract Cancellations in Kern County
January 1, 2000 SB 649, Costa, Chapter 1019, Statutes of 1999 Open Space Subvention Funds for Farmland Security Zones
SB 649, Costa, Chapter 1019, Statutes of 1999; Supercedes SB 985, Johnston, for this section Cancellation Provisions for Farmland Security Zones
SB 985, Johnston, Chapter 1018, Statutes of 1999 "Recreational Use" definition
Agricultural Preserves
Lot Line Adjustments
Public Acquisitions
SB 985, Johnston, Chapter 1018, Statutes of 1999; Supercedes SB 831, Baca, for this section 1240 Land Exchange
SB 985, Chapter 1018, Statutes 1999; AB 1505, Ducheny, Chapter 967, Statutes of 1999 Subdividing Williamson Act Contracted Land
January 1, 1999 SB 1835, Chapter 690, Statutes of 1998 City annexation of county Williamson Act contracted land
SB 2227, Chapter 590, Statutes of 1998 City annexation of county Williamson Act contracted land