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AltadenaUnder Construction 2026

Residential on Las Flores Drive

Drainage plans and hydrology report for a single-family residential fire rebuild following the Eaton Fire.

Drainage plan for Altadena residential project showing flowlines, elevations, and slope arrows

Location

Altadena, CA

Current Phase

Under Construction 2026

Project Overview

Single-family residential fire rebuild in Altadena following the Eaton Fire. The 0.266-acre lot features two manufactured homes (ADUs) on a hillside property averaging 17% slope from front to rear. We set each finished floor 8" above grade at the front edge of each structure, then brought flowlines around the sideyards to connect with existing property line elevations. The site sheet flows entirely by gravity to the rear without needing area drains. The driveway ties into the existing apron at standard slope grades, eliminating the need for retaining walls. We removed most of the stepped walls that were previously dividing the site, creating a more flowing grade across the property.

Site Photos

Newly placed white manufactured home on a graded dirt hillside lot in Altadena during an Eaton Fire rebuild, with a low concrete retaining wall, mailbox, Sigalert construction sign on a metal post, and a red mini skid steer parked at the edge of the yard
Newly placed gray manufactured home with white trim, white door, and black lantern sconce on a concrete foundation at a Las Flores Drive Altadena fire rebuild, with exposed tracked brown dirt revealing concrete footings and a white PVC pipe, dry native shrubs, a wooden fence, and blue sky
Freshly graded bare dirt lot in Altadena during an early-stage Eaton Fire rebuild on Las Flores Drive
Altadena fire-rebuild hillside lot at the foundation phase with a white-sided building on a concrete base with brown trim, a small red plaque sign on the wall, and freshly graded uneven dirt

Project Progress

February 2026

Initial Assessment

Existing conditions documented. Drainage patterns identified.

March 2026

Submittal

Drainage plans and hydrology report submitted to LA County for review.

March 2026

Approved

Drainage plans and hydrology report approved by LA County.

2026

Under Construction

Site grading and manufactured home installation underway. Two manufactured homes on concrete foundations with flowlines tied to the existing property line elevations.

Need similar services?

We are currently accepting new projects in Altadena, Pacific Palisades, and Malibu for fire rebuild engineering.

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