Technical Bulletins
Technical Bulletins (TB) clarify the application and interpretation of code requirements, policies or procedures.
Updates to TBs
DSD continuously updates its publications to align with the latest building codes, construction practices, safety standards, design guidelines and regulatory changes. Here is a summary of the most recently updated TBs:
Recently Updated Technical Bulletins
- June 11, 2026| TB-BLDG 17-8 "Exemptions from Special Inspection for Minor Work"
- April 30, 2026| TB-17-1 "How to Become a Registered Special Inspector"
- March 4, 2026 | TB-ELEC-2-1 Equipment Requiring Servicing Receptacles in Group R-2 Occupancies
- February 25, 2026| TB-RESD-3-2 Exhaust System for Residential Occupancies of Non-Rated Construction
- February 25, 2026| TB-PLMB-7-1 ABS and PVC Drain, Waste and Vent Piping
- Nov. 4, 2025 | TB-BLDG-17-1 "How to Become a Registered Special Inspector"
- Oct. 7, 2025 | TB-BLDG-17-5 "Approval of Building Product Listing and Evaluation Agencies"
- Oct. 7, 2025| TB-BLDG-17-6 "Testing and Inspections for Proof of Compliance"
- Oct. 2, 2025| TB-BLDG-17-2 "Duties of Special Inspector, Approved Material Testing Laboratory, and Special Inspection Agency"
Technical Bulletin Search
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
The purpose of this technical bulletin is to provide guidelines for water heater installations.
Revised