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Cameron County, TX Building Safety: Building Permits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Permit required for
any development in unincorporated Cameron County
Base fee (≤$10,000 valuation)
$65.00
Applications filed at
Planning and Inspections Division
Unpermitted work discovery fee
$250.00
Temporary Type I permit term
4 weeks, renewable to 6 months
Enforcement
contempt of Commissioners Court, Tex. Loc. Gov't Code §81.024

Summary

Unincorporated Cameron County requires a building permit for any development, per the county's Flood Damage Prevention and Building Regulations. Applications go through the Planning and Inspections Division to the Floodplain Administrator or Building Official, who verifies flood compliance, subdivision conformity and utility service before construction starts. Base fees run from $65 up through valuation-based formulas, with temporary-structure permits available too.

These county ordinances apply to unincorporated areas of Cameron County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

A Building Permit shall be required to insure conformity with the provisions of this order in connection with any development in the area governed by this order.

Full Breakdown

Article 3, Section C of the county's Flood Damage Prevention and Building Regulations states plainly that 'a Building Permit shall be required to insure conformity with the provisions of this order in connection with any development in the area governed by this order,' and Article 4, Section C sets the process: an application goes to the Floodplain Administrator or Building Official on county forms, available from the Planning and Inspections Division, with scaled plans showing elevations and the location of proposed and existing structures relative to special flood hazard areas.

The applicant must document sewer or septic availability under Health and Safety Code Chapter 366, drinking water under Chapter 341, and electric service meeting NFPA 70 standards. If the lot does not meet the county's Subdivision Rules and Regulations, the applicant is directed to hire a professional engineer or registered surveyor to plat the tract before a permit issues. Temporary structures get their own permits: a Type I permit covers uses of four weeks or less not needing plumbing, electrical or mechanical service, running four weeks and renewable up to six months; a Type II permit runs six months and is likewise renewable on payment of fees and reinspection.

00 per thousand above $1,000,000. 00 for a roofed carport or deck. 00 plan review fee applies per unit, and permits can be renewed, refunded within six months if no work has started, or revoked under Article 4, Section F for licensing or code violations.

Violations & Fines

Working without the required permit triggers a $250.00 discovery fee under Article 4, Subsection F.3, which does not excuse the permit requirement or block legal action for the unpermitted work. Article 4, Section K makes any violation of the order's terms contempt of the Cameron County Commissioners Court under Local Government Code Section 81.024, and the County Engineer can sue to stop unlawful construction or bar occupancy of a noncompliant structure.

Frequently Asked Questions

Do I need a permit to build in unincorporated Cameron County?
Yes. Article 3, Section C of the county's Flood Damage Prevention and Building Regulations requires a building permit for any development in the unincorporated area. Applications go to the Floodplain Administrator or Building Official through the Planning and Inspections Division, with scaled plans and proof of sewer, water and electric service before the county will issue the permit.
How much is a Cameron County building permit?
Base fees follow Table J.1: $65.00 for construction valued at $10,000 or less, then $65.00 plus $5.00 per additional thousand up to $100,000, with lower per-thousand rates as valuation climbs past $500,000 and $1,000,000. A separate $75.00 plan review fee applies per unit.
What happens if I build without a permit?
Cameron County charges a $250.00 discovery fee under Article 4, Subsection F.3 when unpermitted work is found, on top of still requiring the permit. The order also makes any violation contempt of the Commissioners Court under Local Government Code Section 81.024, and the County Engineer can sue to halt unlawful construction.

Sources & Official References

Other rules in Cameron County

All Cameron County rules

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