Learn more about the fee that is paid by all property owners in the unincorporated area of the county

The Hillsborough County annual Stormwater Utility Assessment (stormwater fee) is paid by all property owners in the unincorporated area of the county. The stormwater fee provides funding for the County's Stormwater Program, which includes the maintenance, rehabilitation, and construction of the public stormwater pipes, pumps, storage systems, and other structures to help reduce roadway flooding and improve overall water quality.

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Program for help with paying the fee

Visit the Stormwater Management Program Hardship Exemption page to learn about the assistance program that helps eligible homeowners pay their annual stormwater fee on their tax bill.

2024 Assessment Structure and Cost

The current assessment structure will utilize an “Equivalent Residential Unit”, or ERU, as the basis for most assessments. The average single-family residence in the County includes 4,267 square feet of impervious surface (roofed, paved, or similar surface), which equals one ERU.

The 2024 assessment for one ERU is $86.49

Assessments for specific parcels are based on either an assigned ERU or the actual impervious square footage, as shown in the chart below:

Calendar Year 2024

Property Classification

Building Footprint (total gross area in square feet)

Assigned ERU

2024 Annual Stormwater Assessment (Proposed)

Single Family
Small

100 - 1,500

0.55 per dwelling unit

$50.36

Single Family
Medium

1,501 - 3,200

1.00 per dwelling unit

$91.56

Single Family
Large

3,201 - 5,700

1.53 per dwelling unit

$140.08

Single Family
Very Large

> 5,700

Actual Impervious Area

$0.0215 per square foot (1)

Multi Family
Apt., Condo, Townhome, Co-op

Flat Rate

0.33 per dwelling unit

$30.21

Mobile Home Park or RV Park

Flat Rate

0.33 per space

$30.21

Non-Residential

Actual Impervious Area

Actual Impervious Area

$0.0215 per square foot (2)

Agricultural (Exempt) 

 

0

$0


  • (1) Minimum assessment of $140.08 per parcel
  • (2) Minimum assessment of $91.56 per parcel

Stormwater and annual assessment FAQs

Stormwater & the Stormwater System
Stormwater Annual Assessment

More information

Questions regarding the assessment can be addressed with Hillsborough County Public Works at (813) 635-5400.

Last Modified: 11/21/2023, 9:31:42 PM

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