Does a Carport Count as GLA?

No — a standard carport does not count as gross living area. It is an open, unenclosed structure and does not qualify as finished, above-grade living space under ANSI Z765-2021. Here is how to handle carports in an appraisal and when a converted carport might be different.

Why carports are excluded from GLA

ANSI Z765-2021 defines GLA as above-grade, finished area with a ceiling height of at least 7 feet over at least 50% of the floor area, connected to the main house and served by the same heating system (or equivalent). A standard carport fails on multiple counts:

Not enclosed: Carports have open sides or partial walls. They are not finished interior space.
Not heated: Carports are unheated, unconditioned structures. ANSI requires that GLA be heated by a conventional permanent system or its equivalent.
Not finished: The floor, walls, and ceiling of a carport do not meet the finish standard required for GLA.

The same logic that excludes a garage applies to a carport — neither is living space, regardless of whether it is attached to the house.

How to report a carport in an appraisal

Report the carport as a separate amenity, not as part of GLA. Most appraisal software has a carport line in the site improvements section. Include the number of vehicles it accommodates and whether it is attached or detached. Do not include its square footage in the GLA total.

When selecting comparables, look for sales that also have carports — or make an adjustment if the subject has a carport and the comparable has a garage, or vice versa. Carport vs. garage is a real value difference in most markets.

What about a converted carport?

If a carport has been enclosed and converted into finished living space — a bedroom, a family room, a home office — the converted area may qualify as GLA. But the bar is higher than most homeowners expect:

The space must be fully enclosed with permanent walls.
It must meet the ceiling height requirement (7 feet over at least 50% of the area).
It must be heated by a permanent, conventional system.
It must be finished to a living area standard (not just drywall on one wall).
It must be permitted. An unpermitted conversion almost always cannot be included in GLA.
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If all of those conditions are met, the converted area can be included in above-grade GLA. If any are missing, it is reported separately — typically as finished area below the ANSI standard, with a note explaining why it was excluded from GLA.

Unpermitted carport conversions

Unpermitted carport conversions are common, especially in markets where attached garages were rare and homeowners added living space without going through the permit process. An appraiser cannot include unpermitted space in GLA — doing so creates liability and may conflict with lender guidelines.

If you encounter an unpermitted conversion, note it in the appraisal report, describe the space clearly, and explain that it is excluded from GLA because it was completed without permits. Depending on the market, the space may still contribute to value as a finished area, but it needs to be reported accurately.

How PlanSnapper handles carports

PlanSnapper measures whatever perimeter you trace. If a carport appears on your floor plan, you control whether it is included or excluded in the polygon you draw. For a standard carport, you would draw your GLA perimeter along the exterior wall of the house and exclude the carport entirely. For a converted carport that qualifies as living space, you would extend the perimeter to include it.

The tool does not make that determination for you. The measurement follows your judgment about what qualifies.