Commercial Stormwater Management in Hernando County

Commercial development in Hernando County requires stormwater management plans that meet SWFWMD 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.

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1,000+ Projects

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Deliverables

What We Deliver in Hernando 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 Knowledge

Local Expertise in Hernando County

Hernando County falls under the jurisdiction of Southwest Florida Water Management District, which applies 25-year, 24-hour (open basins); 100-year, 24-hour (closed basins) criteria for stormwater design. Permit processing typically takes 60-90 days (longer in sensitive basins), with fees ranging from See statewide schedule. CivilSmart's engineers have deep experience navigating SWFWMD requirements and local regulations to deliver compliant commercial engineering solutions.

SWFWMD Jurisdiction

Design Storm: 25-year, 24-hour (open basins); 100-year, 24-hour (closed basins)

Processing Time: 60-90 days (longer in sensitive basins)

Permit Fees: See statewide schedule

PE Stamp: Required for all applications

Commercial Stormwater Management Pricing

Starting at $10,000 for Hernando 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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Frequently Asked Questions

Commercial Stormwater Management in Hernando County — FAQ

How much does commercial stormwater management cost in Hernando County?

Commercial stormwater management in Hernando County ranges from $10,000 for sites under 1 acre to $150,000+ for large multi-phase developments. Mid-sized projects (1–5 acres) typically cost $25,000–$75,000. Pricing depends on site complexity, retention/detention requirements, water quality treatment needs, and the number of permitting agencies involved.

What permits do I need for commercial stormwater management in Hernando County?

Commercial stormwater projects in Hernando County require an ERP from SWFWMD, an NPDES Construction General Permit (CGP) with NOI filing, and Hernando County site plan approval. A Stormwater Pollution Prevention Plan (SWPPP) is mandatory during construction. Projects may also need FDOT drainage approval if connected to state roadways. CivilSmart coordinates all permits as a single package.

Commercial Stormwater Management Costs in Florida (2026)

Engineering costs $10,000–$150,000+ depending on site size. Complete cost breakdown for commercial projects.

SB 7040 Explained: How Florida's Stormwater Law Affects Your Project

SB 7040 ratified nutrient reduction standards affecting ERP permits, project costs, and compliance requirements.

SWPPP in Florida: Complete Guide

When you need a Stormwater Pollution Prevention Plan, what it costs, and how to get one.

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 Hernando County?

Get a free quote from Florida's drainage engineering specialists. PE-stamped plans, SWFWMD compliance, and 100% approval rate.

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Licensed Professional Engineers | 1,000+ Projects | 100% Permit Approval | Since 2004