Zip Code 91401
Sherman Oaks
Grading Plans for Sherman Oaks Properties
Sherman Oaks sits in the San Fernando Valley with both flat lots and hillside terrain. Properties near Ventura Boulevard tend to be flatter, while areas closer to the Santa Monica Mountains foothills have more slope. If your property is in the hills above Burbank Boulevard or near the ridgeline, you are likely dealing with significant grade changes.
We have worked on grading and drainage projects throughout Sherman Oaks, from flat lots near the mall to steep hillside sites above Alomar Drive. We know how LA City LADBS reviews these projects and what makes a plan move through approval efficiently.
LA City LADBS Jurisdiction
Sherman Oaks falls under Los Angeles City Building and Safety (LADBS), not LA County. This means your project permits through the City of Los Angeles. LADBS has specific requirements for grading and drainage that must be addressed in your submittal. We put together grading plans that meet LADBS standards for Sherman Oaks properties. We know what the plan check reviewers look for and how to address common deficiencies before they delay your project.
Flat Lot Drainage
Many Sherman Oaks properties near Ventura Boulevard and the flatter areas of the neighborhood have minimal slope. These lots need drainage design that handles stormwater without creating puddles or sending water to neighboring properties. On flat lots, we typically design: Concrete swales that slope toward the street or approved outlet Area drains at low points to collect water Proper grading around foundations to keep water away from the structure For larger lots or projects with significant new impervious surface, LA City may require downstream analysis to ensure your project does not overwhelm the existing drainage system.
Hillside Properties in the Foothills
Sherman Oaks has hillside areas where properties feature significant grade changes from the street to the rear. Slopes of 20% or greater trigger LA City hillside ordinance requirements. These properties need detailed grading plans that show proposed contours, slope stabilization, retaining wall design and footings, driveway grades that meet city standards, and drainage patterns showing how water leaves the site. Hillside projects in Sherman Oaks require more engineering documentation than flat lots. The grading plan must account for cut slopes, fill slopes, and how water behaves on the site both during construction and after. Retaining walls are typically needed to create level building pads, and those walls need their own foundation design. We put together the civil engineering documentation that LADBS wants to see: grading plans, drainage design, erosion control, and when needed, excavation plans with shoring details. We work with your structural engineer on the retaining wall design and coordinate the civil and structural scopes so your permit package is complete.
Below-Street-Grade Construction
LA City requires that any construction below street grade must outlet stormwater to the street. On hillside lots in Sherman Oaks, this commonly affects: Basement lightwells that collect groundwater and rain runoff Lower-level living spaces where the grade naturally creates below-street conditions Underground parking or storage areas that sit below the street flowline When gravity cannot drain water to the street, we design stormwater sump pump systems that collect and pump water up to street level. We size these systems based on your specific site conditions and LA City requirements.
ADU Projects in Sherman Oaks
ADUs are common throughout Sherman Oaks, and the drainage requirements for these projects depend on your lot slope and the size of the addition. Even on flat lots, adding an ADU means more impervious surface that drainage must account for. For ADU projects, we typically put together: A grading plan showing how water moves across the site after construction Drainage improvements if the addition creates more than minor runoff Erosion control if there is any slope or demolition involved LA City has specific requirements for ADU drainage, and we make sure your submittal addresses them so you do not face delays during permit review.
Working With Homeowners and Architects
We are used to working alongside architects and directly with homeowners. Sherman Oaks projects often involve thoughtful design to maximize buildable area on challenging sites. We bring the engineering perspective that helps those projects move from design through permits without unexpected delays. We can explain the technical stuff in plain terms and make sure your project has the documentation it needs for LADBS approval.
Why Work With B+W Engineering in Sherman Oaks?
- We have worked on projects throughout Sherman Oaks
- We know LADBS requirements for both flat lots and hillside
- We design drainage for below-street-grade construction
- We understand the terrain variations from flat to steep
- We put together documentation that moves through plan check efficiently
- We are available to answer questions throughout your project
Frequently Asked Questions
Your Sherman Oaks Project
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Project Examples in Sherman Oaks
Sherman Oaks Grading Plan - Proposed garage, deck, rec room, rain garden, contours, and drainage improvements on hillside property
Sherman Oaks Completed Project - Mediterranean-style residence with terracotta tile roof, stucco walls, gated driveway entrance, and mature landscaping
Planning a project in Sherman Oaks? Give us a call to discuss your grading and drainage options.
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