Site Grading Los Angeles

Professional site grading in Los Angeles for stable foundations and proper water drainage.

Local Site Grading Expertise

In Los Angeles, site grading solves foundation damage, erosion, and water pooling. Whether you're in hillside zones like the Hollywood Hills or flat areas near Long Beach, proper grading prevents costly drainage failures. We design and execute grading in Los Angeles that meets local codes and protects your property.

How We Work

Our process moves from inspection to permit-ready plans to safe, compliant execution. Every project respects Los Angeles County drainage requirements.

Site Assessment & Planning

We inspect soil type, slope angle, drainage patterns, and LA County requirements. Photos and elevation notes guide our plan strategy.

Design & Permitting

We create grading plans with terrace drains, swales, and erosion controls. Submissions meet LA County Building and Safety specs.

Excavation & Grading

Licensed equipment operators execute cuts and fills. We monitor compaction, slopes, and drainage flow real-time on-site.

Inspection & Closeout

Rough grade inspection confirms compliance. Drainage devices tested. Final sign-off from LA County Building and Safety.

You'll always know what's happening next—and when.

Our Services

Site grading in Los Angeles requires expertise across residential, hillside, and commercial properties.

Residential Lot Grading

Single-family properties in neighborhoods like Silver Lake, Pasadena, and Glendale need grading that slopes water away from foundations while meeting setback rules. We handle the full scope: removing unstable soil, compacting fill, and installing drainage swales.

Residential lot graded and compacted for foundation stability in Silver Lake.

Key factors: Los Angeles clay soils swell and shrink with moisture, so proper compaction prevents foundation settlement. We verify slope angles meet LA County code (6-inch drop in first 10 feet from structures).

Result: stable pads, no water pooling, permit-ready documentation.

Hillside & Slope Grading

Hillside zones in Los Angeles require stricter permits and engineered drainage. Areas like the Hollywood Hills, Brentwood, and Mulholland follow the Baseline Hillside Ordinance, which limits grading and mandates terrace drains on slopes steeper than 3:1.

We design and build concrete terrace drains every 30 feet on vertical height. Flow elevations are documented and inspected. Erosion control—silt fence, fiber rolls, hydroseeding—protects neighboring lots.

SOURCE TBD: LA County Grading Guidelines & Baseline Hillside Ordinance specifications

Terrace drain installation on steep hillside slope in the Hollywood Hills.

Drainage System Integration

Grading alone isn't enough. Water management requires French drains, surface drains, and swales sized for Los Angeles rainfall patterns. We coordinate grading with drainage to meet Low Impact Development (LID) standards now required by LA County.

LA soils challenge drainage: clay holds water (infiltration below 0.1 inches/hour), while sandy soils drain fast. We design systems matching your soil type and site slope.

Terrace drains are paved 3+ inches reinforced concrete. Swales flow at 5–12% grade. Outlets connect to approved systems—never across property lines without recorded easement.

Why It Matters

Bad grading costs thousands. Good grading prevents damage before it starts.

Stop Foundation Failure & Water Damage

Standing water or poor slope toward foundations triggers settlement, cracking, and mold. Los Angeles expansive soils amplify this: when wet clay swells, foundations heave; when dry, they sink. Proper grading sheds water and stabilizes soil conditions.

PROCESS NOTE: Every site gets a soils report (required by LA County). We review bearing capacity, settlement risk, and drainage design before any excavation.

Compliance with LA County Building Code

Los Angeles grading is not DIY. County codes govern slope angles, drainage terrace placement, erosion control, and inspection timing. Mistakes trigger permit rejections and demolition orders.

We submit plans via EPIC-LA (for unincorporated areas) or BSOP (for contract cities). Rough grade inspection happens before any building work. Final sign-off unlocks construction permits.

Serving Los Angeles and Surrounding Areas

We work across Los Angeles County neighborhoods, from flatland properties in Long Beach to steep hillsides in Pacific Palisades. Every area has unique soil, slope, and permit requirements.

Los Angeles soil diversity requires local expertise. Clay-heavy areas (mid-LA, Glendale) demand different compaction than sandy coastal zones. We know site-specific regulations: hillside overlays in Brentwood and Pacific Palisades, coastal zone rules, and flood hazard zones.

CLIENT SCENARIO: A property owner in Silver Lake faced foundation cracks after heavy rains. Existing grade sloped toward the house. We re-graded the lot, installed a French drain, and added a concrete terrace swale. Inspection approved. No more water damage.

Ready to Get Started?

Call us for a free site assessment. We'll review your property, check local codes, and explain what grading will cost. No obligation.

Schedule your site consultation today.

Frequently Asked Questions

Common questions about site grading in Los Angeles.

Do I need a grading permit in Los Angeles?

Yes. Any grading on private property in Los Angeles County requires a permit unless it's under 5,000 cubic yards of material on flat sites with no drainage impact. Most residential and hillside work requires permits. Apply through LA County Building and Safety or your local city office.

How long does a grading permit take in Los Angeles?

Plan check usually takes 2–4 weeks. If corrections are needed, add 1–2 weeks per cycle. Rough grade inspection happens on-site once you're ready to excavate. Full timeline: 4–8 weeks from application to approval.

What is a soils report and why do I need one?

A soils report identifies soil type, bearing capacity, and drainage risk. LA County requires one less than one year old for grading plans. It tells us whether clay, sand, or fill is present and how to compact or drain safely. Most cost $1,000–2,000.

Can I grade my property without a permit?

No. Unpermitted grading triggers stop-work orders and fines. If you affect neighbor drainage or public property, remediation can be expensive. Always get a permit first.

What drainage devices are required on slopes?

Slopes steeper than 3:1 (vertical:horizontal) need concrete terrace drains every 30 feet of height. Flow must stay within your property or be permitted via recorded easement. Swale design depends on soil type and contributing area.

What is rough grade inspection?

Rough grade inspection verifies the graded site matches the approved plan. LA County inspector checks slope angles, compaction, drainage flow, and erosion control. Approval is required before building permits issue.