Do I need SJRWMD approval for my Orlando project?

Whether your Orlando project needs St. Johns River Water Management District (SJRWMD) approval comes down to two questions: how much new impervious surface are you adding, and are you anywhere near a wetland, lake, river, or floodplain? SJRWMD administers Environmental Resource Permits (ERPs) across most of Central and Northeast Florida, and the threshold rules apply uniformly across Orange, Seminole, Lake, Volusia, and Osceola counties.

For most single-family interior remodels, kitchen overhauls, bath renovations, and like-for-like roof replacements, you are well under the threshold and no ERP is required. The line you watch is roughly 4,000 square feet of cumulative impervious surface on a parcel under one acre, or 9,000 square feet on parcels one acre or larger, with reduced exemption thresholds when the parcel touches wetlands or lake frontage. New driveways, patios, paver decks, pool shells, screened lanais on slabs, accessory structures, and cabana additions are all impervious and stack toward that threshold.

The projects most likely to trigger ERP review in Orlando are pool and spa builds with patio expansion, whole-home additions adding 600 sqft or more, lot redevelopment with new driveway plus accessory dwelling, and any work on parcels fronting Lake Apopka, Lake Eola, Lake Ivanhoe, Lake Underhill, Lake Down, the Wekiva River, the Econlockhatchee, or the Little Econ. Waterfront work also brings in the Florida Department of Environmental Protection submerged-lands track for any structure crossing the mean high-water line, including new docks, boathouses, or seawall replacement.

ERP review for a noticed general permit (the lightest tier) typically runs three to six weeks once a complete application is filed, with engineering and a stormwater calculation package prepared by a Florida-licensed civil engineer. Standard general permits and individual ERPs can run two to six months and require designed stormwater retention or treatment. Budget $3,500 to $12,000 in engineering and review fees for the typical homeowner-scale ERP, with bigger numbers on lakefront and wetland-adjacent work.

The permit also runs in parallel with your city or county building permit, not sequentially, which helps schedules. We coordinate the SJRWMD submittal with your civil engineer at the same time we file the building permit so the two reviews land roughly together.

Want Baily to estimate your impervious-surface delta and tell you whether SJRWMD review is realistically on the critical path for your project?