Los Angeles Grading & Drainage Project Portfolio

Q: What types of civil engineering projects does B+W Engineering do?

We design grading plans, drainage plans, hydrology reports, excavation and shoring plans, erosion control plans, and street/improvement plans for hillside and fire-rebuild construction across Los Angeles County. Most of our current work is post-Eaton and Palisades fire rebuilds in Altadena, Pacific Palisades, and Malibu, alongside ADUs, custom hillside homes, and commercial sites.

Q: How many fire rebuild projects have you completed in Altadena?

We have delivered drainage plans, hydrology reports, and related civil packages for more than two dozen Altadena fire rebuild properties since the January 2025 Eaton Fire, including our first approved Altadena fire rebuild drainage plan (Alta Crest Drive). Every project shown here passed LA County or city plan check.

Q: Can I visit or reference one of your completed projects before hiring?

Each portfolio project shows the actual plans and site photos we produced, including the grading design, drainage solution, and the resulting construction. You can also call us at 323-739-3913 to discuss a project similar to yours — we will tell you straight whether your lot needs a drainage plan, a hydrology report, or both.

Since the January 2025 fires, we've been focused on helping Altadena, Pacific Palisades, and Malibu rebuild. Our portfolio showcases 50+ fire rebuild, residential, and commercial engineering projects across Los Angeles.

Fire Rebuild Projects

Altadena Fire Rebuild on Glenrose Avenue

Altadena

Drainage plans, hydrology report, and street plans for an Altadena fire rebuild on Glenrose Avenue. Two story house with attached single story ADU, attached 2-car garage, and pool.

Altadena Drainage Plan for Northaven Lane Steep Downslope Rebuild

Altadena

Drainage plans and hydrology report for an Altadena fire rebuild on Northaven Lane. Steep downslope lot with single story house, rear deck, and separate parking pad.

Altadena Grading & Erosion Control Plans for Punahou Street Fire Rebuild

Altadena

Grading, erosion control, and street plans for an Altadena fire rebuild on Punahou Street. Single family house with attached garage, attached ADU, detached ADU, and pool on a lot above street level. B+W Engineering.

Altadena Drainage Plan & Hydrology Report on W Mendocino Avenue

Altadena

Drainage plans and hydrology report for an Altadena fire rebuild — two-story house with cellar, rear garage with ADU, and a plastic-lined rain garden.

Altadena Grading & Drainage Plans for Punahou Street Rebuild

Altadena

Drainage plans and hydrology report for an Altadena fire rebuild on a 200-foot lot. Took over from another civil engineer to remove retaining walls and sump pumps, matching the house and garage to existing topography with sheet flow and plastic lined rain gardens.

Pacific Palisades Grading & Drainage Plans on Glenhaven Avenue

Pacific Palisades

Grading plans, excavation plans, and drainage plans for a Pacific Palisades fire rebuild on a 12% slope with basement and garage-level construction.

Altadena Drainage Plan & Hydrology on West Marigold Street

Altadena

Drainage plans and hydrology report for an Altadena fire rebuild with an 11-foot slope, ADU addition, and plastic-lined rain gardens on both sides. Approved May 2026.

Altadena Drainage Plan for Olive Avenue Fire Rebuild

Altadena

Drainage plans for a 0.1685-acre Altadena fire rebuild lot. Sideways lot with 7% slope, sheet flow design.

Steep hillside with existing concrete retaining walls

Canon Boulevard Steep Hillside Grading

Altadena

Hillside Grading Plans for fire rebuild.

Altadena Drainage Plan & Hydrology Report on Las Flores Drive Fire Rebuild

Altadena

Drainage plan and hydrology report for a 0.266-acre Las Flores Drive fire rebuild in Altadena: two manufactured homes on a 17% hillside with gravity flowlines, no retaining walls, and no sump pump. LA County approved. Grading + Drainage Plans: 323-739-3913.

Altadena Multi-Unit Drainage Plan on Ganesha Avenue

Altadena

Drainage plans, hydrology report, and street plans for a multi-unit Altadena Eaton Fire rebuild on a sideways lot with gravity drainage.

Altadena Drainage Plan for West Harriet Street Fire Rebuild

Altadena

Drainage plans for a 0.123-acre Altadena fire rebuild lot. Sheet flow design with area drains.

Altadena Drainage Plan & Hydrology on West Palm Street

Altadena

Drainage plan for a 0.1745-acre Altadena fire rebuild lot with 7-foot slope — sheet flow to lined rain gardens, no sump pump needed. Approved April 2026.

Altadena Drainage Plan for East Poppyfields Drive Fire Rebuild

Altadena

Drainage plans and hydrology report for a 0.1795-acre Altadena fire rebuild lot. Sheet flow design eliminates need for sump pump.

Altadena Drainage Plan on West Mariposa Street

Altadena

Drainage plan for an Altadena Eaton Fire rebuild — existing conditions documented and stormwater flow designed across the lot. Completed April 2026.

Altadena Rough Grading Plan on East Pine Street

Altadena

Rough grading plan for a 0.4986-acre Altadena fire rebuild — the largest Altadena lot we've graded — with pool removal, 1:1 cut slopes, and 5:1 fill to daylight.

Altadena Drainage Plan & Hydrology Report for Marathon Road Fire Rebuild

Altadena

Drainage plan for a 0.1309-acre Altadena Eaton Fire rebuild lot with a 10ft slope. Area drains and a trench drain to lined rain gardens, no sump pump needed. Under Construction 2026. B+W Engineering.

Altadena Drainage Plan & Hydrology Report for East Palm Avenue Fire Rebuild

Altadena

Drainage plan for 0.199-acre Altadena lot with 13ft slope. Area drains to trench drain to lined rain garden, offset for sewer. 13-step rear deck.

Altadena Fire Rebuild on Mount Curve Avenue — Grading & Hydrology

Altadena

Grading plans and hydrology report for a like-for-like Eaton Fire rebuild — the second approved Altadena fire rebuild and the first using a hydrology report to avoid a sump pump. 0.247-acre single-story lot with front sheet flow to the street.

Altadena Drainage Plan for Alta Crest Drive Fire Rebuild

Altadena

First approved Altadena fire rebuild drainage plan from B+W. 0.2398-acre lot with 13ft slope, dual rain gardens, guest house and carport. Drainage plan only.

Concrete forming in progress for retaining wall with visible rebar reinforcement and black drainage pipe being installed through hillside slope on Altadena fire rebuild site

Altadena Drainage Plan & Hydrology Report on East Palm Street

Altadena

Full fire-rebuild plan set on East Palm Street in Altadena: drainage plans, hydrology report, stormwater sump pump design, and street plan for an Eaton Fire lot.

Altadena Drainage Plan with Fire Water Tank for Marengo Avenue Rebuild

Altadena

Drainage plan for 0.229-acre Altadena lot with 1325-gallon underground fire tank. Downspouts and trench drains to tank, overflow to lined rain garden. B+W Engineering.

Altadena Drainage Plan for East Las Flores Drive Fire Rebuild

Altadena

Drainage plan for 0.1768-acre corner lot in Altadena with 10ft slope. Flowline wraps house to Santa Anita Ave, max 5:1 slopes for drainage plan. Approved April 2026.

Pine Street drainage plan showing sheet flow design

Altadena Drainage Plan & Hydrology Report on Pine Street

Altadena

Drainage plans and hydrology report for a single-family Altadena Eaton Fire rebuild — site assessment, existing drainage patterns, and gravity flow design. Plans approved.

Pacific Palisades Fire Rebuild on Chapala Drive — Grading, Drainage & Excavation Plans

Pacific Palisades

Grading plans, excavation plans, erosion control, and stormwater sump pump design for a single-family Pacific Palisades fire rebuild following the Palisades Fire.

Altadena Drainage Plan & Hydrology Report on Skywood Circle

Altadena

Drainage plans and hydrology report for a single-family Altadena Eaton Fire rebuild on Skywood Circle. Plans approved July 2026.

Altadena Drainage Plan & Hydrology Report on Wapello Street

Altadena

Drainage plans and hydrology report for a hillside single-family Altadena fire rebuild — the first of two B+W projects on Wapello Street.

Altadena Drainage & Hydrology on Wapello Street — Downslope Rebuild

Altadena

Drainage plans and hydrology report for the second Wapello Street fire rebuild in Altadena — a downslope lot with an existing pool and a property-line retaining wall for tight grade.