What Drives the Cost of a Hangar Appraisal

Owners ask what a hangar appraisal costs and are frustrated when the answer is a question. The frustration is fair, but the question is not evasion. Two hangars of identical size at the same airport can require very different amounts of work, and the difference is almost never visible from the ramp. What follows is what actually moves the scope, so you can judge a proposal on something other than the number at the bottom.

The ground lease is the first thing that moves the number

Most hangars sit on leased public land. Before any valuation work begins, the lease has to be read: remaining term, renewal mechanics, rent reset language, reversion of improvements, assignment and leasehold mortgage provisions, and whether the sponsor has any option to purchase or recapture. A clean lease with a long remaining term and a clear reversion clause is a short read. A lease that has been amended four times over thirty years, with a side letter and an unrecorded consent to assignment, is a different job entirely.

This is also where scope surprises come from. An appraiser who quotes before reading the lease is quoting on the assumption that it is simple. If it is not, either the fee changes or the analysis gets thin. Neither is what you want.

What the report has to survive

Intended use sets the standard the work has to meet, and standards cost time. A value opinion supporting an internal decision is one thing. A report that will be attached to a loan file, reviewed by a bank's appraisal department, filed with a tax tribunal, submitted to the FAA in support of a land release, disposal, or fair market value determination under the grant assurances, where the FAA itself must be named as an intended user of the report, or entered as an exhibit in a condemnation trial is another. The analysis underneath may be similar; the documentation, the support for every adjustment, and the anticipation of the reviewer's objections are not.

Litigation is the clearest example. Work that will be deposed has to be built so that every number can be traced to a source and defended under questioning by someone paid to break it. That is a different construction job than a report nobody will contest.

Whether the airport will release its data

Hangar work depends on rent rolls, lease abstracts, rate schedules, minimum standards, waiting lists, and recent transactions at comparable fields. Some sponsors publish all of it. Some release it on request. Some require a public records request and take weeks. Some hold rates in board minutes that have to be read one meeting at a time.

That does not change what the assignment requires, but it changes the hours. Where data cannot be obtained at all, it can change the analysis itself, since an approach that cannot be supported may have to rest on a disclosed extraordinary assumption or be set aside. When you ask what an appraisal costs, part of the honest answer depends on how cooperative your airport is, which you probably know better than the appraiser does.

Complexity you cannot see from the outside

Several conditions reliably expand scope, and all of them are common:

• Specialized improvements. Paint booths, maintenance bays, wash racks, fuel farms, and heavy power service are not generic warehouse features and do not carry generic warehouse cost or depreciation treatment.
• Functional obsolescence. Door width and height, together with clear span and clear height, govern which aircraft the building can actually accept. Width is usually the binding constraint on wingspan. A hangar that cannot take the aircraft its market wants is worth less than its square footage suggests, and demonstrating that takes work.
• Environmental exposure. Where firefighting foam was used or stored, the contamination question has to be handled explicitly, either analyzed with support from environmental professionals or carried as a disclosed extraordinary assumption, rather than passed over in silence.
• Mixed aeronautical and non-aeronautical use. Sponsors are constrained in what they may charge for each, and the rent structure follows the classification.
• Multiple interests in one building. A sponsor's leased fee, a tenant's leasehold, and a subleasehold can all exist in the same structure, and each is a distinct interest requiring its own opinion of value where it falls within the assignment.

Three approaches or one

Cost, sales comparison, and income are not automatically all required. Which are applicable, and which are merely available, is a judgment made after the facts are known. On leasehold hangars the income approach usually carries the analysis and the cost approach can mislead badly, because a building can cost far more to construct than the remaining lease term will ever support. Where sales of comparable hangars at comparable fields genuinely exist, sales comparison earns its place. Where they do not, forcing the approach adds pages and subtracts credibility.

What you can do to bring the scope down

Most of the levers are on your side of the table. Have the lease and every amendment in one file. Know your square footage, door dimensions, clear height, and year built, and know whether anything has been added since. Have the last three years of rent and expense history if the building is leased. Know what the assessor currently thinks the property is, which is often not what it is. Identify the intended use and the intended users before the engagement letter, not after the draft.

An appraiser who receives that package can scope accurately. An appraiser who has to assemble it will scope for the uncertainty.

How to compare proposals

A proposal materially cheaper than the others is usually cheaper because it is scoped differently, and sometimes for good reason. Compare scope to scope rather than number to number. Ask what the proposal assumes about the ground lease, which approaches to value it will develop and why, which intended use and intended users it is built to support, and what site inspection and data collection it includes. Two proposals that answer those four questions differently are not quotes for the same assignment, and the difference in price is telling you so.

This article is general information for professionals evaluating aviation real estate. It is not appraisal, legal, or tax advice, and it does not create an engagement. It quotes no fees; scope and fees are set case by case.