ADU Construction in Palos Verdes Estates
ADU construction in Palos Verdes Estates, placed around the sewer line and panel, on footings with corrosion-resistant steel for a coastal setting.
Buried under a Palos Verdes Estates yard, the lateral carrying the house's wastewater to the street shapes where an ADU can stand. We find its exit point and depth, because the unit's drain has to reach it by gravity or through a pump. Setting the new footing over that pipe would mean a bridge beam or a reroute, so we map it with a camera before the foundation is drawn. The electrical panel and gas meter get the same look.
Footings and buried lines
A footing poured on top of a sewer pipe puts load on something never meant to carry it. When the line runs where the unit wants to go, the engineer has a few tools: shift the unit a few feet, sleeve the pipe through the footing with clearance around it, or span it with a grade beam that bears on soil to each side. Each choice changes the foundation sheet. Electrical feeders and gas lines in the yard get located too, so trenching for footings does not cut them. Where the unit lands also sets how far the new power and drain runs must reach.
Coastal and building review
A coastal permit enters the picture only if the parcel falls inside the state coastal zone, a question we settle early since it can add a step ahead of plan check by the Palos Verdes Estates building department. Wherever salt air can reach, the hardware tying the frame to the footing, from anchor bolts to straps and hold-downs, is specified hot-dip galvanized or stainless. Should the lot slope, a soils engineer's report sets the footing depth and type. We prepare the set, submit it, and answer corrections in writing.
About our adu construction serviceEverything we do in Palos Verdes Estates
ADU Construction in Palos Verdes Estates: questions
Most often a slab on grade with a deepened edge footing, though a raised floor on concrete stem walls also works and leaves room under the unit for drain and power runs. The engineer chooses from the soils findings and the shear wall layout, then sizes the footing to match.
Only when the slab edge and existing footing prove deep and sound enough for the new walls. We drill a small test hole at the edge, look over the concrete and note any cracking. Where it comes up short, we pour added footing under the shear walls, with epoxy-set bolts tying the old plate down.
One floor and 500 square feet are its limits. Anything bigger, or with a second floor, is priced once the lot has been reviewed. In Palos Verdes Estates we draft the site plan and the structural sheets with special care, one to show the sewer route and coastal status, the other to detail each hold-down.
ADU Construction in other cities
More we build in Palos Verdes Estates
Book an inspection in Palos Verdes Estates
Describe the house and what it needs. We look at the structure first and send the quote in writing.