Number of Plumbing Fixtures

The purpose of this technical bulletin is to assist designers on determining the minimum
required number of plumbing fixtures.

Revised March 2023

ABS and PVC Drain, Waste and Vent Piping

The purpose of this technical bulletin is to establish the requirements for the installation of acrylonitrile-butadiene-styrene (ABS) or polyvinyl-chloride (PVC) piping used for drain, waste and vent (DWV) systems in residential buildings classified as Residential Group R-2 and R-3 occupancies, such as single-family residences, duplexes, high rise buildings and townhouses. 

Revised December 2023

Protection of Existing Buildings with Residential Fire Sprinklers

The purpose of this Technical Bulletin is to clarify the City of San Diego's policy on when fire sprinkler protection is required for additions and alterations to existing dwellings not protected with a sprinkler system.

Revised November 2020

Exhaust System for Residential Occupancies of Non-Rated Construction

The purpose of this technical bulletin is to clarify the installation requirements of environmental air ducts in residential occupancies.

Revised December 2023

Townhouses

The purpose of this bulletin is to establish the procedures for permitting townhouses constructed in accordance with the provisions of the California Residential Code (CRC), Section R302.2. Specifically, the focus of this bulletin is to address the construction of the walls separating townhouses, utilities providing services to townhouses, floor area projections, and accessibility.

Revised January 2020

Sprinkler Requirements for Accessory Dwelling Units

The purpose of this Technical Bulletin is to provide guidance on the requirements for sprinkler protection for accessory dwelling units when the primary residence is not sprinkler-protected.

Revised November 2023

Water Heater

The purpose of this technical bulletin is to provide guidelines for water heater installations.

Revised December 2023