What is the Airport Overlay in Austin, and how can it affect my project?

The Airport Overlay has special requirements. Make sure you’re familiar with them before you get started on your next development project.
Airport Overlay Austin

The airport overlay in the City of Austin is made of a controlled compatible land use area that is broken into the following airport overlay zones: airport overlay zone one (AO-1), airport overlay zone two (AO-2), airport overlay zone three (AO-3).

The following table prescribes the land uses permitted under certain conditions, including noise reduction measures.

Airport Overlay Zone Table

In the Airport Overlay Table:

  • P = Permitted
  • X = Prohibited
  • P-25db means the land use and related structures are permitted, but measures to achieve a minimum outdoor-to-indoor noise level reduction of 25 decibels are required for a structure.
  • P-30db means the land use and related structures are permitted, but measures to achieve a minimum outdoor-to-indoor noise level reduction of 30 decibels are required for a structure.
  • P-sound system means the land use and related structures are permitted, but a special sound reinforcement system is required.
  • P-25db certain areas means the land use and related structures are permitted, but measures to achieve a minimum outdoor-to-indoor noise level reduction of 25 decibels are required for a portion of a building that is a public reception area, an office, a noise sensitive area, or an area where the normal noise level is low.
  • P-25db residential means the land use and related structures are permitted, but measures to achieve a minimum outdoor-to-indoor noise level reduction of 25 decibels are required for a residential building.

Residential and school uses in airport overlay zone three, AO-3, are permitted only on property that is included in a final plat that was recorded on August 20, 2001, is located in a municipal utility district on December 31, 2001, or located in a neighborhood plan combining district on December 31, 2001.

Airport Overlay Map Austin

In addition to land use restrictions, the following airport hazards are described and prohibited: any structure or object of natural growth: exceeds the height limits of Section 25-13-22; interferes with visual, radar, radio, or other systems for tracking, acquiring data relating to, monitoring, or controlling aircraft; interferes with a pilot’s ability to distinguish between airport lights and others lights, results in glare in the eyes of a pilot, or impairs visibility in the vicinity of the airport; creates a wildlife hazard, as defined by the Code of Federal Regulations Title 14, Part 139; or otherwise endangers or interferes with the landing, taking off, or maneuvering of an aircraft.

Please see Chapter 25-13 – Airport Hazard and Compatible Land Use Regulations in the City of Austin Code of Ordinances for more information.

Civil engineering and site development permitting is the critical path for the success of your development project. Our team has market-leading experience in the successful delivery of hundreds of land development projects in Austin and across the country. Contact us today to see how we can help you on your next project.

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