Commercial Stormwater Management in Nassau County
Commercial development in Nassau County requires stormwater management plans that meet SJRWMD retention standards and county-level review. CivilSmart engineers design compliant stormwater systems from parking lot drainage to multi-acre retention — PE-stamped and permit-ready.
What We Deliver in Nassau County
Title sheet and general notes
Project identification, general construction notes, and regulatory reference index.
Site plan (existing conditions, demolition, layout)
Comprehensive site plan showing existing conditions, proposed layout, parking, and zoning diagrams.
Grading and drainage plan
Civil 3D-based plan showing cut/fill balancing, 3D surface modeling, pond sections, and drainage details.
Stormwater management plan
Detention/retention design, BMP systems, flow calculations, and water quality treatment documentation.
Local Expertise in Nassau County
Nassau County falls under the jurisdiction of St. Johns River Water Management District, which applies Two-pronged nutrient approach (post-2024) criteria for stormwater design. Permit processing typically takes Variable — no fixed timeline; 30+ days for local coordination, with fees ranging from $100 to $14,000. Nassau County has its own drainage ordinance with specific requirements including roadway and drainage ordinance 99-17 (section 10.8) with specific elevation requirements. CivilSmart's engineers have deep experience navigating SJRWMD requirements and local regulations to deliver compliant commercial engineering solutions.
SJRWMD Jurisdiction
Local Ordinance
Nassau County enforces additional drainage requirements: Roadway and Drainage Ordinance 99-17 (Section 10.8) with specific elevation requirements.
Commercial Stormwater Management Pricing
Starting at $10,000 for Nassau County projects.
Small Commercial (< 1 acre)
$10,000 – $25,000
Full-service design, permitting, and agency coordination for sites under 1 acre.
Mid-Sized Commercial (1-5 acres)
$25,000 – $75,000
Comprehensive design, permitting, SWPPP, and construction oversight for mid-scale projects.
Large / Complex Commercial (> 5 acres)
$50,000 – $150,000+
Multi-phase projects, underground detention, full regulatory compliance for large developments.
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Commercial Stormwater Management in Nassau County — FAQ
How much does commercial stormwater management cost in Nassau County?
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About This Service
Commercial Stormwater Management — Full DetailsAbout This Location
Nassau County — All ServicesOther Services in Nassau County
Site Survey Requirements
Commercial stormwater management plans require comprehensive site data. We recommend Apex Surveying & Mapping — Florida's leading surveying firm — for topographic surveys, ALTA surveys, and construction staking for commercial developments.
Ready to Start Your Commercial Project in Nassau County?
Get a free quote from Florida's drainage engineering specialists. PE-stamped plans, SJRWMD compliance, and 100% approval rate.
Licensed Professional Engineers | 1,000+ Projects | 100% Permit Approval | Since 2004