Environmental Rules in Harris County, TX (2026)

Harris County Code of Ordinances, Ch. 36, Part B, Sec 1.02

All new development and significant redevelopment within the unincorporated areas of Harris County, Texas without first securing a SWQ Permit, or submitting an Industrial Activity Certification in accordance with Part B, Section 1.05 is prohibited. If any portion of a project drains directly into a Municipal Separate Storm Sewer System owned by Harris County or the Harris County Flood Control D...

Harris County Code of Ordinances, Ch. 36, Part C, Sec 3.01

A site operator that is required to post notice as a large or small construction site under the Texas Construction General Permit (TXR150000) shall remove all temporary structural erosion controls no later than 30 days after submittal of the NOT or after final stabilization has been achieved on all portions of the site that are the responsibility of the permittee. For large construction sites, ...

Harris County Code of Ordinances, Ch. 19, Sec 4.06

If the structure is a single family residence the finished floor shall be a minimum of 12 inches above the highest adjacent natural grade when measured 10 feet from the edge of the slab or 12 inches above the crown of the adjacent street which ever results in the highest elevation (an exception may be granted on sloping properties where the crown requirement is not achievable).

Texas Health and Safety Code Sec. 382.0191 (Idling of Motor Vehicle — Heavy-Duty Engine Exemption)

Sec. 382.0191. IDLING OF MOTOR VEHICLE. (a) In this section, "idling" means allowing an engine to run while the motor vehicle is not engaged in forward or reverse motion. (b) The commission may not prohibit or limit the idling of any motor vehicle with a gross vehicle weight rating greater than 8,500 pounds that is equipped with a 2008 or subsequent model year heavy-duty diesel engine or liquef...

Texas Health & Safety Code Sec. 388.003 (Energy Code)

Sec. 388.003. ADOPTION OF BUILDING ENERGY EFFICIENCY PERFORMANCE STANDARDS. (a) To achieve energy conservation in single-family residential construction, the energy efficiency chapter of the International Residential Code, as it existed on May 1, 2001, is adopted as the energy code in this state for single-family residential construction. On September 1, 2016, the energy efficiency chapter of t...

Harris County Code of Ordinances, Ch. 19, Part 4, Sec 4.07

The top of the subfloor of the lowest habitable floor must be elevated to 24 or more inches above the 0.2 percent or 500-year flood elevation or 12 inches above the level of the crown of the nearest public street, whichever is higher, except in a floodway where the bottom of the lowest supporting member of the structure shall be elevated 36 or more inches above 0.2 percent or 500-year flood ele...