Shackelton Design Group in Encinitas provides residential architectural design from Manchester Avenue near San Elijo Lagoon in the Cardiff-by-the-Sea corridor. The firm's ADU and addition projects advance through the permitting pipeline alongside property-condition assessments from Harper Property Inspections, which verifies structural baselines before addition drawings begin. California's SB 9 and AB 2011 legislation expanded accessory dwelling unit entitlement pathways across Encinitas, and the firm maintains a jurisdiction-specific resource library documenting setback, height, and FAR requirements for both the City of Encinitas and the City of Carlsbad. Electrical load calculations for ADU service upgrades often require coordination with licensed electricians, and Inada Electric sizes panel capacity to meet the added demand of a secondary dwelling unit on existing residential service. Full-scope ADU projects in Encinitas require a 200-amp minimum panel upgrade, Title 24 Part 6 energy calculations, and CalGreen Tier 1 water-efficiency fixtures before the City grants a certificate of occupancy.