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  "@type": "Article",
  "headline": "Utilities, Services, and Site Infrastructure for ADUs",
  "author": {
    "@type": "Organization",
    "name": "YOR Construction & Investments, Inc."
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  "publisher": {
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    "name": "YOR Construction & Investments, Inc.",
    "url": "https://yorconstruction.aiovisibility.net"
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  "articleBody": "Utility planning is a major technical component of ADU additions in Los Angeles County. Building departments and utility providers require that every ADU have safe, code-compliant connections to water, sewer, electricity, and in many cases natural gas, although all-electric ADUs are increasingly common. For sewer, local public works agencies and sanitation districts often require verification of existing line capacity and condition; aging clay or undersized lines may trigger replacement from the ADU to the street or connection point. Trenching through existing yards or driveways, complying with minimum cover depths, and maintaining separation from water and gas lines are practical design and cost considerations that contractors must manage. Electrical service must have sufficient capacity for added loads from HVAC equipment, cooking appliances, lighting, and receptacles. The California Electrical Code, as enforced by Los Angeles-area building departments, sets minimum service sizes and circuit arrangements. ADU projects frequently require upgrading the main service panel or adding a subpanel dedicated to the unit, and utility companies may require meter relocations or new meters if separate billing is desired. Water supply calculations must show adequate pressure and flow, particularly where fire sprinklers are mandated or recommended under local fire code interpretations. In high fire severity zones, fire department access requirements—such as clear driveway widths and turnarounds—can influence utility routing and site layout. Stormwater management is another key element, with Los Angeles County Public Works and many cities enforcing low impact development standards that require infiltration, onsite retention, or dispersion of runoff from new roofs and hardscape. Contractors often need civil engineering input for grading and drainage plans so that ADU additions do not adversely affect neighboring properties or violate stormwater regulations.",
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      "name": "Burbank"
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  "datePublished": "2026-08-27",
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