BOMA standard
docs(building-design): propagate 9 EN Correction callouts to ES pairs, remove internal-process narration, and genericize leak-boundary references
@@ -10,7 +10,7 @@ status: active audience: customer-woodfine bcsc_class: current-fact language_protocol: PROSE-TOPIC last_edited: 2026-07-11 last_edited: 2026-08-24 editor: pointsav-engineering short_description: "The Building Owners and Managers Association measurement standard for commercial floor area, used as the common measurement basis for Woodfine lease areas and building comparisons." paired_with: building-design/boma-standard.es.md @@ -26,13 +26,7 @@ The BOMA standard distinguishes two primary area measures: **Usable Area** is the space a tenant exclusively occupies — the demised area inside the demising walls, excluding the building core and multi-tenant common areas. It represents the space a tenant configures and operates. **Rentable Area** adds a proportionate share of the building's common areas — lobbies, corridors, service areas — to the Usable Area, producing the area against which the lease rate is applied. The ratio of Rentable to Usable Area (the "load factor" or "loss factor") reflects how efficiently the building converts gross area to tenant-exclusive use. **Correction (2026-08-02):** "load factor" and "loss factor" are not the same figure in standard CRE usage — load factor is Rentable/Usable (a multiplier, e.g. 1.15), while loss factor is (Rentable − Usable)/Rentable (a percentage, e.g. ~13%). Presenting them as interchangeable synonyms for one ratio is imprecise. **Flagged, not resolved.** **Rentable Area** adds a proportionate share of the building's common areas — lobbies, corridors, service areas — to the Usable Area, producing the area against which the lease rate is applied. Two related but distinct figures describe this relationship: the **load factor** is the ratio of Rentable Area to Usable Area — a multiplier, typically around 1.15 — while the **loss factor** is the difference between Rentable and Usable Area expressed as a percentage of Rentable Area, typically around 13%. Both reflect how efficiently the building converts gross area to tenant-exclusive use, but they are not interchangeable: the load factor multiplies Usable Area up to Rentable Area, while the loss factor states what share of Rentable Area is common-area allocation. Woodfine [[fixed-floor-plates|fixed floor plates]] are designed to optimize the Rentable-to-Usable ratio by minimizing the core footprint relative to the plate's total area. A smaller building core relative to the plate produces a lower load factor, meaning tenants obtain more Usable Area per unit of Rentable Area paid.