Screen the site rather than only the finished roof
A business planning a building addition near an airport may have local zoning approval and a contractor ready to mobilize. It should also screen the proposal for federal aviation notice requirements. The relevant review can concern the completed structure and temporary objects used to build it, so the permanent roof height is not the only dimension to collect.
FAA regulations 77.7 and 77.9 address notice for specified construction or alteration. The tests include height, location, and airport-related conditions. A project below 200 feet is not automatically outside the notice rules because proximity tests can matter. Have the survey and design professionals apply the actual criteria to the site rather than relying on a general statement that the building is low.
Obtain accurate coordinates, ground elevation, proposed heights including rooftop appurtenances, nearby airport information, and construction-equipment plans. Ask the contractor to identify cranes, boom trucks, pumps, and other temporary objects with their actual operating envelopes. A proposed addition can have a different airspace profile while being built than it has after occupancy.
Put the federal notice before the earliest relevant event
When notice is required, regulation 77.7 generally calls for Form 7460-1 at least 45 days before the start of construction or alteration or the date a construction-permit application is filed, whichever occurs first. Review that sequence before the team files the local application. Waiting until 45 days before crane delivery may miss the earlier event in the rule.
The regulation contains additional provisions, including one for proposals also subject to FCC licensing and a limited emergency provision. Do not assume a tight commercial schedule constitutes the specified emergency. Have the responsible adviser identify the actual notice date and required submission using the final proposal and current rules.
Keep the notice calendar separate from the expected completion of an FAA aeronautical study. An advance submission interval is not a promise that a determination arrives within that number of days or that the original design will receive the desired finding. Include review and potential design coordination in the project schedule before committing to irreversible mobilization costs.
Model the effect of a changed crane plan
Consider a hypothetical addition with an $18,000 crane-mobilization quote and a planned two-week installation window. Assume the supported airspace review leads the project team to select a different crane configuration costing $24,000 and an additional $3,500 of coordination and planning. The revised modeled amount is $27,500, or $9,500 above the initial quote.
If the owner instead locked the original mobilization and later incurred an assumed $6,000 cancellation charge, the comparison would also need that cost. These figures are procurement illustrations, not a conclusion about an actual aviation hazard or an approved crane configuration. The designer and contractor must establish the feasible construction method and applicable safety requirements.
Compare site and method alternatives before treating the lowest equipment quote as the full construction cost. Include height, swing radius, operating dates, staging, and any required marking or lighting conditions in the supported plan. Do not assume a determination for one object or location automatically covers a materially changed temporary equipment arrangement.
Maintain the determination and local permit files together
FAA notice and the resulting determination address aviation-related matters; the project still needs its applicable local permits, structural design, construction safety, and other approvals. Assign responsibility for reconciling the same coordinates, elevations, dimensions, and equipment assumptions across the files. Conflicting drawings can create a project that matches neither supported review.
Retain the survey, scope determination, submitted notice and attachments, FAA correspondence and determination, construction schedule, equipment information, local permit records, and later changes. Give the contractor the actual conditions that affect its planned work. Refer significant changes back to the responsible professionals before assuming the original submission remains sufficient.
This guide does not determine whether a site requires notice, authorize construction, or certify an obstruction’s safety. Its practical premises decision is to screen the completed building and temporary construction objects before the earliest filing or start event. That allows an airport-area expansion budget to reflect the actual review and construction method, instead of discovering an unplanned federal notice issue after equipment and permit commitments are already in place.
Sources & further reading
Consult the original guidance and its effective dates. These references support the educational discussion; their application depends on the specific facts.