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Posts about sump pumps in Los Angeles fire rebuilds. We usually try to avoid them. When we can't, here's what a sump pump design actually involves.
LA County often requires pumps on Altadena fire rebuild projects. But there are ways to get around that requirement. If you are planning to add an ADU later, doing the extra engineering now could save $15,000 to $20,000 by avoiding sump pump requirements.
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We recently got a drainage plan approved in Altadena without requiring a sump pump or a LID maintenance covenant. Here is the engineering behind why it worked.
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A fire rebuild project on Chapala Drive in Pacific Palisades required a grading plan, excavation plan, erosion control plan, and stormwater sump pump design for a basement with 2 stories above. The corner lot had existing drainage from NW to SE and a proposed pool with lightwells below street grade.
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Many Altadena fire rebuilds are told they need a sump pump. Here's how we sometimes show the site drains the same way it did before the fire and skip the pump entirely.
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When does an Altadena property need a sump pump? We follow LA County standards for design and try to avoid pumps whenever gravity drainage can work instead.
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We have another Altadena drainage plan where the goal was to not use a stormwater sump pump. The way the lot sits the existing stormwater used to drain all from the top of curb at the street to the rear of the property.
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