Building an ADU in El Dorado Hills: what a foothill, fire-zone build really takes
El Dorado Hills looks like a polished suburb, but it permits like the foothills it actually is. There's no city counter — your ADU goes to El Dorado County in Placerville. Most of the town sits in a fire hazard zone with ignition-resistant rules, some lots carry serpentine soils and naturally occurring asbestos, and EID's connection fees are no joke. We're a Sacramento design-build crew, and EDH is a 25-mile drive east we make most weeks. Here's the honest version of how a build goes.
Serrano committee vs. Green Valley Road lots
People treat El Dorado Hills like a single master-planned blob. It isn't. Serrano is the gated heart of it — large lots, manicured streets, and a design committee that scrutinizes exterior materials, roof pitch and color before anything gets built. Gorgeous to live in. Slower to get a freestanding structure through. The HOA, not the county, is often the long pole in a Serrano ADU.
Head north and the land changes. Bass Lake, Marble Valley and the newer tracts up that way sit on real hillside, on engineered pads with grade that an ADU foundation has to answer for. Stepped footings, retaining, drainage that respects the slope — that's the norm up there, not the exception. The view is the payoff; the engineering is the price.