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Building Near a Houston-Area Airport? The Survey May Need to Address FAA Height Limits

A developer has a warehouse or distribution site lined up near one of Houston's airports — good highway access, close to freight corridors, priced right. Then the civil engineer flags that the proposed building height, combined with the site's elevation, may trigger a federal review process that has nothing to do with local zoning or the county appraisal district.

Properties near airports operate under an additional layer of regulation most commercial buyers never think about until it's already affecting their design. Getting accurate elevation and location data early is what keeps that review from becoming a surprise late in the project.

Why Proximity to an Airport Changes the Rules

Under 14 CFR Part 77, the FAA regulates structures that could penetrate the imaginary "surfaces" extending outward and upward from an airport's runways — protecting the airspace pilots use for approach, departure, and circling. A crane, a building, even a stack of stored materials can trigger a required notice to the FAA if it's tall enough and close enough to an airport, regardless of how far it is from the airport's actual property line.

Houston's airports — Bush Intercontinental, Hobby, and the smaller general aviation fields scattered around the metro area — each have their own protected surfaces extending well beyond the airport boundary itself. A commercial or industrial site several miles away can still fall within a notification zone depending on the specific approach path involved.

What Triggers the FAA Notification Requirement

Generally, a proposed structure needs to be evaluated if it exceeds certain height thresholds relative to ground elevation and distance from the airport — the exact trigger depends on the specific facility and runway involved, which is why this isn't something a developer should estimate informally. Common triggers include:

• Any structure taller than 200 feet above ground level, regardless of location

• Structures that exceed a slope-based height limit within a defined distance of an airport, which is much more permissive far from the airport and much more restrictive close to it

• Construction near a runway approach that could interfere with existing or planned instrument approach procedures

Why the Survey Matters Here

Determining whether a project needs FAA notification, and if so, what the resulting height limitation actually is, depends on precise ground elevation and location data — exactly what an accurate survey provides. A topographic survey or elevation certificate establishes the site's actual ground elevation, which is the baseline the FAA's height calculations are measured from.

Getting this data early, before finalizing a building design, gives your team a chance to confirm whether the project falls under FAA review and what maximum height the site can actually support — rather than discovering a conflict after the building design, or the crane needed to construct it, is already set.

What to Have Ready for This Determination

• An accurate current elevation survey of the site

• The proposed structure's maximum height, including any rooftop equipment, antennas, or temporary construction equipment like cranes

• The site's precise coordinates, since FAA review is based on exact location relative to airport approach surfaces

Temporary Construction Equipment Counts Too

It's easy to focus on the finished building's height and overlook the construction process itself. A tower crane used to build a mid-rise structure can exceed height thresholds even when the completed building doesn't. If your project near an airport will involve a crane or other tall temporary equipment, that needs to be factored into the FAA review alongside the permanent structure.

This Doesn't Mean the Project Can't Move Forward

A required FAA notification isn't the same as a denial. Many projects near airports go through this review and receive a "no hazard" determination without needing to change their design at all. The point of building accurate survey data into your planning early is to know where you stand before design and construction commitments are made, not to avoid the process altogether — which isn't optional for projects that meet the notification criteria.

Multiple Nearby Airports Can Complicate the Picture

The Houston metro area has enough general aviation airports, helipads, and municipal fields scattered throughout its industrial and suburban corridors that a site can sometimes fall within the protected surface of more than one facility, or within a surface tied to an approach procedure that isn't obvious just by looking at a map. Confirming this early with accurate survey data is especially worthwhile for sites in the areas surrounding Houston's outer industrial corridors, where general aviation airports are common but not always top of mind during initial site selection.

Build the Review Timeline Into Your Project Schedule

FAA aeronautical studies take time to process, and a project that discovers a notification requirement late — after design is finalized or construction financing is already in place — can face a real schedule setback. Confirming whether your site is subject to Part 77 review as early as possible, using accurate elevation and location survey data, keeps this from becoming a late surprise on a project timeline that's already tight.

Developing a commercial or industrial property near a Houston-area airport? Contact South Texas Surveying with the property location, proposed building height, and project timeline, so our team can provide the elevation and location data your engineer needs to evaluate FAA notification requirements early.