Formula
NLA = GFA − common areas − plant − cores
WherePer PCA Method of Measurement for office buildings.
Why it matters
NLA is what office tenants pay rent on, and what office feasibilities calculate rent rolls against. The ratio NLA / GFA is the efficiency of an office building; 80–85% is good, below 75% is poor.
Worked example
An office tower with 24,000 m² GFA and 19,800 m² NLA has an efficiency of 82.5%. At $620/m² of NLA, the gross rent roll is 19,800 × $620 = $12,276,000.
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