Agoura Hills is mostly 1970s–90s stucco: Morrison Ranch, Fountainwood and Liberty Canyon were built in a few years each, with the same control joints, the same foam trim and the same parapets, and they have all aged the same way under thirty summers of heat. The joints have opened, the trim has let water behind the finish at every mitre, and the base of the walls has disappeared behind the planters. Old Agoura is the exception: wood-sided ranch houses and horse properties from before the tracts.
Most of the city is a Very High Fire Hazard Severity Zone, and the south side came through the Woolsey Fire in 2018, so the material question is settled by Chapter 7A on most parcels: fiber cement, three-coat stucco or listed fire-retardant-treated wood, with ember-resistant vents. In Old Agoura that means the wood look stays, in treated wood or in fiber cement milled to the same profile.
The City issues its own permits from Ladyface Court, the oak tree ordinance decides where the scaffold can stand, and the hillside tracts add HOA review of material and colour. Heat is the climate, so we choose the finish and the sealants for UV and movement rather than for damp.