Site Grading Calabasas, CA

Professional site grading in Los Angeles for residential construction and hillside properties.

Professional Site Grading

In Los Angeles, site grading is the foundation of every residential project. We prepare hillside properties and flat lots for construction by managing drainage, compaction, and compliance with LA County and City Building and Safety codes. Site grading in Los Angeles requires engineered plans for hillside areas and proper slope management to preserve property value and safety.

How We Work

From site assessment to final grading inspection, we follow a systematic process that meets local regulations and protects your property.

Site Assessment

We evaluate slope, soil stability, drainage patterns, and local regulations. In hillside areas near Silver Lake or Los Feliz, we verify compliance with Baseline Hillside Ordinance requirements for slope ratios and grading limits.

Engineered Grading Plan

Our civil engineers prepare detailed grading plans showing cut/fill areas, drainage systems, and slope stability. Plans include storm water management and comply with Los Angeles County NPDES and LID requirements for new development.

Execution & Inspection

We grade, compact fill, build drainage systems, and manage erosion controls. Regular inspections ensure compliance at rough grade and final grade stages. Los Angeles County Building and Safety sign-off is included.

Final Sign-Off

We provide as-graded documentation, geologist sign-off, and final grading reports. Your project is ready for building construction. All certifications meet LA County and City of Los Angeles Building Code requirements.

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

Our Services

Grading expertise for residential projects across Los Angeles.

Hillside Grading & Site Preparation

Hillside properties in neighborhoods like Hollywood Hills, Benedict Canyon, and Laurel Canyon demand specialized grading. We manage slope cuts, fill placement, and retaining wall integration while staying within Baseline Hillside Ordinance limits. Slopes must not exceed 2:1 (horizontal:vertical) ratios, and grading is capped based on lot size and existing terrain.

We handle engineered grading for any hillside project over 5,000 cubic yards, plus all hillside area work regardless of volume. Drainage terraces, subdrains, and sediment control are included. Our geotechnical team ensures soil stability and slope protection.

Hillside grading with drainage terraces and slope stabilization in the Hollywood Hills area.

ADU & Multi-Unit Development Grading

ADU site preparation with proper compaction and drainage in Echo Park and surrounding areas.

ADUs and small multi-family projects need clean, compliant grading to avoid permit delays. We grade for foundation pads, manage elevation changes, and ensure drainage meets LA City and County requirements. On steep Los Angeles lots, we coordinate cuts and fills to minimize grading volume while respecting slope limits.

Stormwater pollution prevention plans (SWPPP) and LID compliance are handled for projects disturbing one acre or more. Your ADU site will be ready for construction without environmental flag delays.

Drainage & Stormwater Management

Los Angeles hillside and flat properties face water management challenges. We install swales, down drains, and detention systems to keep water away from structures and neighboring properties. Building pads receive minimum 5% slope for final grade and 2% for rough grade inspection approval.

All drainage meets NPDES and Low Impact Development (LID) standards. We flow-test swales and drainage devices before rough grade sign-off. Permanent post-construction treatment controls are installed for NPDES/LID compliance on new developments.

Professional drainage system design and installation in Sherman Oaks and surrounding Los Angeles neighborhoods.

Why It Matters

Proper site grading protects your investment and ensures fast permitting.

Avoid Permit Delays & Construction Costs

Grading mistakes push back building schedules and rack up change orders. Los Angeles Building and Safety requires engineered grading plans for hillside areas. Slopes must match specifications, drainage must flow tested, and soil compaction must pass testing. We get it right the first time.

Our in-house civil engineers and geotechnical team eliminate back-and-forth with inspectors. Plans are precise, inspections are documented, and final reports are delivered on schedule.

Hillside Compliance & Safety

The Baseline Hillside Ordinance limits grading volume, slope angles, and fill placement to preserve neighborhood character and prevent erosion. Non-compliance costs thousands in re-grading. We build every project within these limits from the start, ensuring your permit doesn't get denied and your slopes don't fail.

Geologic assessments and geotechnical certification are provided for all hillside work. Your site will have documented stability and grading compliance at final inspection.

Serving Los Angeles and Surrounding Areas

We work throughout Los Angeles, from hillside neighborhoods to flat neighborhoods and unincorporated county areas.

Local Expertise Across LA

We understand Los Angeles grading requirements across City and County jurisdictions. Hillside neighborhoods like Hollywood Hills, Silver Lake, Los Feliz, and Laurel Canyon fall under City Baseline Hillside Ordinance rules. Unincorporated areas and developments in county zones follow LA County Building Code Appendix J and grading guidelines.

We manage permits with the City of Los Angeles Department of Building and Safety, LA County Department of Public Works, and County Building and Safety District Offices. Multi-unit projects may require additional approvals from Department of Regional Planning. Our team handles all of it.

Ready to Start Your Grading Project?

Call us for a free site assessment. We'll review your property, discuss grading approach, and explain Los Angeles requirements. No charge for the initial consultation.

Frequently Asked Questions

Common questions about site grading in Los Angeles.

Do I need an engineered grading plan for my Los Angeles property?

Yes, if your property is in a designated hillside area or your grading exceeds 5,000 cubic yards. City and County regulations require a licensed civil engineer to design all hillside grading. Flat-lot projects under 5,000 cubic yards may qualify for regular grading, but a pre-site review is recommended.

What does the Baseline Hillside Ordinance require for grading?

Grading is capped at 500 cubic yards plus 5% of your lot size. Slopes must not exceed 2:1 (horizontal:vertical). The ordinance limits total cut-and-fill to prevent major terrain alteration and erosion. Our team calculates your grading allowance during the site assessment phase.

How long does grading take?

Timeline depends on lot size, volume, and grading complexity. Small residential sites typically take 2-4 weeks. Hillside projects with engineered drainage and terraces may take 4-8 weeks. We provide a schedule during project scoping.

What are NPDES and LID requirements for Los Angeles?

NPDES (National Pollution Discharge Elimination System) and LID (Low Impact Development) rules require erosion and sediment control during grading, plus permanent post-construction treatment for stormwater runoff. New developments must install bioretention, permeable paving, or treatment devices to filter runoff. We design and build all systems to pass Los Angeles County inspection.

What happens if grading doesn't pass inspection?

Failed inspections delay permits and add cost. Common issues: slopes too steep, compaction below spec, or drainage not flowing. We pre-stage all inspections with Building and Safety representatives to catch issues early. Our geotechnical team tests compaction and provides certified reports before final grade sign-off.