ADU Construction in Agoura Hills
Agoura Hills ADUs start with a level reading of the main house floor, then footings sized by soils and walls detailed for the fire hazard map.
A zip level run across the floor of the main house is the first reading we take on an Agoura Hills lot. It shows whether the ground under the property has moved over time, which tells the engineer what to look for in the soils report before footings for the ADU are sized. A floor that has stayed flat points one way. A floor with a sag or a slope toward one corner points another, and we note both on the survey.
Reading the ground before drawing
After the floor survey, a soils engineer drills or digs test holes where the unit will stand on an Agoura Hills lot. The report lists bearing values, any expansive clay and the depth the footings must reach. If the lot slopes, it may also call for setbacks from the slope face or deeper footings on the downhill side. Our engineer designs the foundation and the shear walls from those numbers. Bolts and hold-downs are fixed in the forms, and we photograph them for the inspector before concrete arrives.
Windows and doors that resist embers
If an Agoura Hills parcel appears on the fire hazard severity map, its ADU windows can meet the rules with dual panes, at least one of them tempered, and exterior doors with a solid core or a listed rating. Glass also affects bracing, since every wide opening shortens the solid wall left for shear panels. We size windows and the patio door with the engineer so both rules are met at once. Review and inspection run through the city building department. Siding, roof and vents follow the same ember-resistance rules.
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That comes from the soils report. A level Agoura Hills lot with stable soil can carry a slab whose perimeter is deepened. Where clay swells or the lot slopes, the engineer may deepen the footings, step them, or switch to drilled piers tied with grade beams. Hold-down bolts are cast in during the pour in each case.
Sometimes, once we have measured. An Agoura Hills garage is opened at the footing corners and wherever a shear panel will sit. If the concrete is deep, continuous and sound, epoxy anchors and new shear panels may be enough. If it is shallow or cracked, a new footing section goes in first.
It is meant for a single-story ADU whose floor holds to 500 square feet. On an Agoura Hills parcel inside a fire hazard map, the wall drawings and the site plan draw the reviewer's attention, and the package covers both in full. A design that grows past that size or adds a story is priced after review.
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Describe the house and what it needs. We look at the structure first and send the quote in writing.