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Dallas County, TX Environmental Rules: Grading & Drainage (2026)

Some Restrictions

Verified 1 month ago|Source: Dallas County Public Works →

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Key Facts

Grading Permit: Only in flood zones
Drainage: County maintains road ROW ditches
TCEQ: TXR150000 for 1+ acre
Contact: Public Works 214-653-7426

City-specific rules exist: Grand Prairie, Richardson, DeSoto, Cedar Hill, Mesquite, Carrollton, Irving, Dallas, and Garland have their own grading & drainage rules that differ from Dallas County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

Summary

No separate county grading ordinance. Dallas County Floodplain regulations cover grading in flood zones. County maintains drainage ditches in road ROW. TCEQ construction stormwater permit required for 1+ acre sites.

Full Breakdown

There is no separate grading ordinance for unincorporated Dallas County. Grading and drainage activities are regulated through the Dallas County Floodplain Management Regulations (Court Order 2019-0322) when in mapped flood zones. Dallas County Road and Bridge maintains open drainage ditches within county road rights-of-way. Property owners should not obstruct or alter county drainage infrastructure. TCEQ construction stormwater permit (TXR150000) is required for land disturbance of 1 acre or more. Developers coordinate drainage design with Dallas County Public Works for subdivision development.

Violations & Fines

Floodplain violations per Court Order 2019-0322. TCEQ stormwater permit violations. Obstruction of county drainage.

Frequently Asked Questions

Do I need a permit for grading my property?

Yes. A development permit from DUAS is required for grading and filling in unincorporated Dallas County. Apply at www.mgoconnect.org.

Can I change the drainage on my property?

Grading must not increase stormwater flow to neighboring properties. A development permit is required, and floodplain areas need additional review.

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Dallas County, TX Environmental Rules: Grading & Drainage (2026)

Key Facts

Summary

Full Breakdown

Violations & Fines

Frequently Asked Questions

Sources & Official References

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