Site Development & Land

Commercial Site Plan and Civil Design

Full civil engineering for commercial projects: site layout, grading, stormwater, utilities and permitting through approval. Typical US fees run $10,000 to $150,000, and most projects take 2 to 6 months including agency review. Our drawings, calculations and reports are sealed by a Professional Engineer (PE) licensed in the state where your project is located, ready for permit submission.

Typical US fee$10,000 to $150,000

Typical timeline2 to 6 months including agency review

Permit drawingsSealed by a PE

What the work involves

For a commercial, retail, office, industrial or multifamily project, the civil engineer prepares the site plan set: layout, grading and drainage, stormwater management, water and sewer utilities, erosion control, paving, and details. The engineer submits to the city or county, answers review comments, and coordinates with architects, surveyors, traffic engineers and utility providers. Civil fees on commercial work are often a percentage of construction cost or a lump sum by phase.

When you need it

New commercial building or redevelopment
Expanding a building or parking area
Change of use that triggers site plan review
Jurisdiction requires stormwater management or utility plans
Lender or tenant requires civil construction documents

What you receive

Site plan set (layout, grading, utilities, details)
Stormwater management report
Erosion and sediment control plan
Permit applications and comment responses
Construction-phase support

What drives the cost

Estimate. HomeAdvisor lists commercial engineering plans at $5,000 to $100,000; civil site work for larger sites can exceed that. Municipal review fees are separate and are often charged per acre.

Frequently asked questions

How much does commercial Site Plan and Civil Design cost?

Across the US, commercial Site Plan and Civil Design usually costs $10,000 to $150,000. Estimate. HomeAdvisor lists commercial engineering plans at $5,000 to $100,000; civil site work for larger sites can exceed that. Municipal review fees are separate and are often charged per acre.

How long does commercial Site Plan and Civil Design take?

Plan on 2 to 6 months including agency review from signed proposal to stamped deliverables, longer if a site visit, soil testing or a permit review cycle is involved.

Do I need a licensed PE for commercial Site Plan and Civil Design?

In most US jurisdictions, yes. When the work needs a permit, the plans, calculations or report usually must be sealed by a Professional Engineer licensed in the state where the project is located. Every deliverable we issue for permit is sealed that way.

Will I also need a land surveyor?

Sometimes. Depending on the site, commercial Site Plan and Civil Design can also involve a land surveyor, architect, traffic engineer, geotechnical engineer or landscape architect. We tell you up front which other professionals your project needs and coordinate with them so the drawings agree.

Who do you provide commercial Site Plan and Civil Design for?

Most of our clients for this service are developers, contractors, architects and business owners. Describe your project and one of our engineers will reply with scope, fee and schedule.

How long does commercial site plan approval take?

It depends on the jurisdiction and project size. Design often takes several weeks, and municipal review with comment cycles can add one to several months.

Why do municipalities charge review fees by acre?

Review effort scales with site size. For example, some cities publish per-acre site plan and stormwater review fees on top of a base fee.

What is included in a civil plan set?

Typically existing conditions, demolition, site layout, grading and drainage, utilities, erosion control, landscaping coordination and construction details. The exact sheet list depends on the jurisdiction's submittal checklist.

Do I need a traffic study too?

Larger projects often do. Local codes set trip thresholds that trigger a traffic impact study.