St. Petersburg owners can use permeable resin-bound surfacing for stormwater when it's designed as part of an on-site system: a resin-bound surface over a permeable base like Rock Crete and an open-graded stone reservoir, sized by an engineer to hold and release water, with an underdrain where groundwater sits high. Built that way, it can be one part of a system that qualifies for the city's stormwater credits, which are for non-single-family properties and for groups of homes that apply together.

Over an existing slab it's a new finish, not a drainage measure. St. Pete has good reason to keep that distinction straight: the city's fee is tied to impervious area, and the 2024 hurricanes showed how fast water from Tampa Bay and from the sky can meet in the same street.

How St. Pete bills impervious area, and who can earn a credit

Single-family homes are billed in four tiers by impervious area: 1,600 square feet or less, 1,601 to 3,200, 3,201 to 4,800, and 4,801 or more. Other properties are billed in equivalent residential units of 2,406 square feet of impervious surface. Owners can review how the city measured their parcel and appeal through an online portal.

Stormwater utility fee credits are for non-single-family customers, such as commercial, multifamily, industrial and government properties, and for single-family homes that apply together: homes in a subdivision with a privately maintained stormwater system permitted by the Southwest Florida Water Management District (SWFWMD), or condos, townhomes and houses on one meter. A separately metered house can't apply on its own. A Stormwater Management System Credit for on-site detention or retention, and a Tidal Water Discharge Credit for sites that drain straight to Boca Ciega Bay or Tampa Bay with treatment to Outstanding Florida Waters criteria, can each reach 52 percent. Applications need a Florida professional engineer's seal and credit calculations, go to the Engineering & Capital Improvements Department, and are decided within 30 days of a complete submittal.

A permeable resin-bound parking court can be one piece of a credited retention system. Whether it moves a house into a lower tier depends on how the city classifies the surface, so ask before counting on it.

Sandy soils, a high water table and record water levels

USDA maps much of St. Petersburg as Myakka soils and urban land or as filled ground. Myakka is a sandy, poorly drained flatwoods soil whose water table sits within 18 inches of the surface for one to four months in most years, and shelly soils such as the Pinellas series, whose type location is in this county, occur in places. Near the bay and the finger canals, groundwater also moves with the tide. Expect shallow reservoirs, confirm separation with borings, and use underdrains where the base can't drain in time.

Hurricane Helene pushed water to 6.31 feet above mean higher high water at the St. Petersburg tide station in September 2024, beating a record set by Hurricane Elena in 1985 on a gauge running since 1947. Two weeks later, Milton dropped 20.40 inches of rain at a site near the city. The city's SPAR (St. Pete Agile Resilience) program discusses finger-canal shorelines in neighborhoods such as Venetian Isles, Shore Acres and Riviera Bay. Plan surface cleaning after any flood.

Where permeable resin-bound fits in St. Pete

Multifamily and condominium sites along Tampa Bay that want to qualify for, or keep, a stormwater credit.
Downtown, Grand Central and EDGE District courtyards, where private plazas and café spaces leave no room for ponds.
Old Northeast and Kenwood homes replacing cracked driveways and walks with a finish that suits older streets.
Hotels, churches and medical offices with drop-off lanes and walkways.

Approvals and support for St. Petersburg projects

Site plans and permits run through the city's Planning & Zoning and Building & Permitting offices, credit applications go to Engineering & Capital Improvements, and SWFWMD permits apply above state thresholds. Since December 28, 2025, new SWFWMD applications must meet the statewide nutrient rule. If you're after a credit, budget for the engineer's calculations and the inspection checklist the city requires after approval.

Resin Rock supplies the binder, stone, trims and Rock Crete base, sends data sheets to support the engineer's design, and matches owners with an approved installer. We train and approve installers but don't install, and the credit decision is the city's.

Before you specify permeable resin-bound in St. Petersburg

Check the parcel's measured impervious area in the city's review portal.
Confirm whether the property type is eligible for stormwater credits.
Have a Florida PE run the city's credit calculator or equivalent calculations.
Confirm groundwater separation with borings, especially near canals.
Schedule post-flood cleaning and keep inspection records.

Common questions about permeable resin-bound in St. Petersburg

Can a single-family home in St. Pete get a stormwater credit?

Not on its own. A separately metered house can't apply, but homes in a subdivision with a privately maintained, SWFWMD-permitted stormwater system can apply together through their association, as can condos, townhomes or houses on one meter. Otherwise, the fee depends on which impervious-area tier the parcel falls in, so the practical question is how the city measures and classifies your surfaces.

How much can a stormwater credit reduce the fee?

Each of the two credit types, the Stormwater Management System Credit and the Tidal Water Discharge Credit, can reduce the fee by up to 52 percent. The amount depends on the engineer's calculations, and the city decides within 30 days of a complete application. A permeable section counts only as part of a designed system, not as a credit on its own.

Can I resurface a storm-damaged driveway with resin-bound?

Yes, as a finish over sound concrete, though it won't change how the lot drains. If the slab is cracked or settled and has to come out anyway, that's the moment to decide whether to rebuild it permeable. A permeable rebuild needs a base designed for St. Pete's shallow groundwater, possibly with an underdrain, so involve an engineer if drainage matters.

Official sources for St. Petersburg

Local rules change. We last checked these sources in October 2026. Confirm current requirements with the reviewing agency before you design, and treat this page as a starting point, not engineering or permitting advice.

Permeable Resin-Bound Surfacing in St. Petersburg, FL