Compare Regulations
Compare city/county requirements side-by-side (up to 4 jurisdictions)
Denton County (Unincorporated)(3 more)
Rows with an amber indicator differ across selections.
| Field | Local Denton County (Unincorporated) Denton County Development Services |
|---|---|
| Permit | |
| Permit / Authorization | Floodplain Development Permit / Drainage Review |
| Submit To | Denton County Development Services |
| Lead Time | Plan review typically 2–4 weeks |
| Application Method | Submit via Denton County Development Services at 401 W. Hickory St., Denton, TX 76201 or online portal |
| Fee | Contact agency for current fee schedule |
| Water Quality | |
| Impervious Cover Limit | No countywide impervious cover cap; drainage systems must accommodate design storm flows per Denton County Drainage Design Criteria |
| On-Site Treatment Required | No |
| Detention Required | Yes — Detention required to limit post-development peak flows to pre-development levels for 2-, 10-, and 100-year storms per Denton County Drainage Design Criteria; applies only in unincorporated areas |
| Turbidity / Discharge Standard | No numeric NTU limit; discharges must comply with TCEQ TXR150000 and not degrade Elm Fork Trinity River, Ray Roberts Lake, or Lewisville Lake |
| SWPPP | |
| SWPPP / Local Plan Required | Yes — SWPPP per TCEQ TXR150000; drainage report required for county permits |
| PE Stamp Required | Yes |
| Inspections | |
| Inspection Requirements | Denton County Development Services inspects development permits in unincorporated areas. Rapid growth across the county means frequent BMP inspection is critical. |
| Inspector Qualification | No county-specific certification required beyond TCEQ SWPPP requirements |
| Design & Zones | |
| Local Design Manual | Denton County Drainage Design Criteria |
| Special Overlay Zones | Lake Ray Roberts Watershed, Lewisville Lake Watershed, Elm Fork Trinity River Floodplain, Extraterritorial Jurisdiction (ETJ) of Cities |