View the Larkfield Estates Subdivision Zone Map
Due to the unprecedented fires that devastated our community in October 2017, Larkfield Estates property owners are challenged with rebuilding, including the best way to manage wastewater. Lots in the subdivision have varying types of septic systems. Many of the properties have serviceable septic systems that can accommodate reconstruction. Other parcels have systems that could support redevelopment but not to the scale at which owners are allowed to rebuild under existing zoning regulations. Some sites have failed systems that need to be replaced.
To provide another option to fire survivors, the Sonoma County Water Agency will consider extension of sewer service to the subdivision. For those owners who wish to connect their properties to the sewer main (which, if approved, will take at least a year to authorize and construct) and proceed with reconstruction, Permit Sonoma would allow the use of holding tanks as an interim measure. Properties with compliant septic systems will not be compelled to connect to new main.
In providing this option Permit Sonoma does not take a position on whether owners should connect their properties to the sewer system, if approved and constructed. The agency takes this action regarding holding tanks to provide another option for fire survivors trying to rebuild on or sell their properties.
Regulations allow the use of holding tanks under certain conditions. Sonoma County Code Section 713.9 provides, “No privy [holding tank], including vault privies, chemical privies, pit privies or cesspools shall be constructed, maintained or used except upon written approval of the Director of the Permit and Resource Management Department (Permit Sonoma) unless otherwise specifically permitted by law.” The Regional Water Quality Control Board Basin Plan provides for the use of holding tanks if the proposed use is in a sewer service area, sewer service extension is underway and will be completed in two years, and the treatment plant has capacity to meet the proposed users’ needs.
Permit Sonoma will track the use of holding tanks through building permit applications. No additional permits will be required. For the best use of holding tanks, please visit or contact the Resiliency Permit Center at:
448 Fiscal Drive