Dept/Div. Contact: Planning Division - (209)
· · ·
Description: Annexation is the process by which
cities expand their limits. Property that is outside of the
City limits, but within Modesto’s ultimate growth boundary
(Sphere of Influence, or SOI), can be considered for
annexation into the City limits.
Generally speaking, areas proposed for annexation must be
large, adjacent to the City, contiguous and must lie within
City’s General Plan boundary and Sphere of Influence.
All proposals for annexation must:
- be reviewed through the
Growth Review to determine whether an adequate
(5-year) supply of land is available for development,
- receive a determination from
City Council, based upon the
Growth Review, whether it will be placed on the
ballot for a public advisory election to allow the
extension of sewer service to the area.
Public advisory elections apply indirectly to the
annexation of new territory into the City of Modesto, by
requiring that an advisory election of the citizens of
Modesto be held prior to extending sewer improvements to new
areas with five or more dwelling units.
If the public advisory vote is affirmative, planning can
begin. Prior to annexation:
Zoning becomes effective upon annexation and the property
is thereafter subject to City regulations.
There are two major types of annexations, each of which
has additional requirements, as noted below.
Undeveloped Land: “Undeveloped land” generally
lies on the edge of the City and has little or no
development and has been identified as a future growth
area. Annexation must be supported by other property
owners in the area proposed for annexation.
specific plan [PDF]
and environmental review must be prepared and approved
by the City Council prior to annexation.
County "Island" or other developed County land:
The majority of the area is developed, but it lies
outside of City limits, and has a lower potential for
new development than undeveloped land. These “Island”
areas are typically either completely surrounded by the
City on all sides or are substantially surrounded by the
City. Residents may apply to annex to the City or the
City may initiate annexation. All roads, sidewalks,
street lights, and other infrastructure must be improved
to City standards before annexation and before sewer and
water service are extended. Typically, annexation must
also be supported by other property owners within the
area proposed for annexation.
More information about the City’s annexation process is
available through the Community and Economic Development
Department. Information about the Local Agency Formation
Commission’s (LAFCO’s) annexation process is available at
Related Forms & Handouts
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Contact the Planning Division at (209)
This page was updated on: Friday, October 1, 2010 3:43:36 PM