Single-Story ADU — E. 109th St, Lynwood, CA 90262

Engineered to withstand seismic Design Category D and 90 mph winds, this 500 ft² ADU delivers full residential comfort inside a streamlined wood-framed shell. Completed permit set issued in 2024, the unit features a gable roof pre-wired for future solar and a floor plan that cleanly separates private and public zones.

Project Overview

• Location: 2627 E 109th St, Lynwood, CA 90262
• Lot Context: Rear yard infill on a standard residential lot
• Building Footprint: 32′ × 16′ (≈ 500 ft²)
• Stories: 1 story + attic
• Roof: 4:12 gable, mean height 10′-6″, solar-ready
• Construction Type: Type V-B, all wood framing
• Architect / EOR: MLB Consulting & Engineering Inc.
• Permit Status: Approved 2024 (Job No. MLB-24-981)
• Sprinklers: Not required for detached ADU < 1 200 ft²

Floor Plan Highlights

• Living / Kitchen: Open-concept front zone with full wall kitchen
• Bedroom: Rear left corner, egress window, built-in closet
• Bathroom: 3-piece (shower, toilet, vanity) at rear right
• Laundry: Stacked W / D closet & linen storage in corridor
• Mechanical: ENERGY STAR bath fan with humidistat; ridge vent in attic

Structural & Code Features

The lateral system pairs blocked 15/32″ plywood diaphragms with SDPWS Type A shear walls and Simpson HDU hold-downs, keeping demand-to-capacity ratios below 0.80. Shallow 16″ × 24″ strip footings (3 #5 top & bottom) simplify excavation while meeting 2022 CBC and ASCE 7-16 seismic and wind loads. All details are pre-approved in the LADBS Structural Observation Program, ensuring smooth inspections and faster build timelines.