Single-Story New-Build ADU – Orizaba Ave, Long Beach CA 90805
Golden ADU secured full structural and CALGreen approval for a new light-frame, single-story accessory dwelling unit at the rear of 6785 Orizaba Ave. Engineered with conventional wood construction and a cool-roof shingle assembly, this unit delivers efficient living space while complying with the latest 2022 CBC / CRC and Long Beach Green Code mandates.
Project Overview
- Address: 6785 Orizaba Ave, Long Beach, CA 90805
- Permit #: BADD312687 · Approved 12 Dec 2024
- Structure Type: New single-story detached ADU
- Occupancy / Construction: R-3 · Type V-B wood framing
- Footings & Slab: 8″ thickened-edge slab, #4 dowels @ 12″ o.c.; new 16″ × 18″ pad footings at interior posts
- Roof: Asphalt shingle cool-roof (CertainTeed Landmark Solaris “Aged Cedar”) over ½″ plywood
- Wall Framing: 2 × 4 DF-L No. 2 @ 16″ o.c. · Plumbing walls 2 × 6
- Sprinklers: Not required (detached ADU < 1 200 ft²)
- Design Team: Anthony Bueno — Architect · MLB Consulting & Engineering — Structural EOR
Structural Highlights
- Roof framed with 2 × rafters @ 16″ o.c.; blocked plywood diaphragm, A35 clips & ST22 drag-straps for shear transfer
- Exterior shear walls per CRC Table R602.10 with plywood sheathing; Simpson CMST12 straps at corner returns
- Attic ventilation: 648 in² net free — 12 roof vents @ 54 in² each
- All hold-downs, anchors, and nailing schedules pre-approved on Sheet S-3 for faster inspection sign-off
CALGreen & Sustainability
The approved CALGreen package (GRN-1, 9, 11, 14, 16, 18) commits the project to cool-roof shingles (SRI ≥ 78), low-flow plumbing fixtures, 65 % construction-waste diversion, MERV-13 air filtration, and an EV-capable 40 A branch circuit stubbed to the driveway. Downspouts are directed to landscape infiltration per Long Beach storm-water BMPs.