Leasing plan efficiencies — aperiodic tiles vs. modular grids

The Floor Plate Methodology defends a specific design claim: an aperiodic tile system with irregular Key Plan widths produces more distinct leasable configurations per square foot than a uniform modular grid. This topic isolates the quantitative argument and the secondary leasing levers — climate-zone autonomy, demising tolerance, and rolling efficiency. Named assembly examples appear in floor-plate tile combinations.

[edit]The 16-vs-9 result

A row of nine uniform 325 SF cells yields nine distinct contiguous leasehold sizes: 325, 650, 975, 1,300, 1,625, 1,950, 2,275, 2,600, and 2,925 SF. Total area: 2,925 SF. Combinations: 9. Climate zones: 1. Doors: 9. Service hookups: 9.

The same row length filled with irregular Private Office widths (325 + 465 + 325 + 685 + 325 + 325 + 325 = 2,775 SF) yields sixteen distinct contiguous leasehold sizes ranging from 325 SF to 2,775 SF. Climate zones: 1. Doors: 7. Service hookups: 7.

The aperiodic system delivers 1.78× more distinct leasable configurations at 95% of the area with 78% of the door and hookup count. The leasing instrument can match a wider distribution of tenant-requested footprints without recomposing the Tile.

[edit]Professional Office sub-type combination counts

The same argument extends across Professional Office sub-types:

Sub-type	Aperiodic combinations	Modular combinations	Total SF
Laboratory	30	18	5,550
Medical	30	18	5,550
Civic	42	27	8,325
Academic	30	18	5,550

The Civic sub-type achieves the highest combination count because the larger plate area (8,325 SF) admits more intermediate demising-wall positions while preserving the irregular-width nesting property.

[edit]Climate-zone autonomy as a leasing instrument

Every Tile is exactly one HVAC climate zone. A tenant who wants full thermostat control must lease a whole Tile; a tenant who leases part of a Tile shares the climate zone with adjacent tenants. The leasing agreement makes the trade-off explicit and prices it accordingly.

Tenant footprint	Tile position	Climate zones shared
300 SF Private Office	Tile segment	4 other tenants
2,700 SF Corporate	Whole Tile A	None — full climate authority
4,900 SF Corporate	Whole Tile F	None — full climate authority

[edit]Demising tolerance

The methodology permits demising walls to fall on any Tile edge. The cost of crossing a Tile boundary is loss of climate-zone control: the two tenants sharing a partial Tile share the HVAC zone. The HVAC system cannot be split mid-tile without rebuilding the duct routing.

The leasing instrument disincentivises mid-tile demising through a premium rent line item but does not prohibit it. No engineering workaround for a mid-tile demising wall exists short of full HVAC re-engineering — a conclusion documented in the V12 Methodology Solutions section.

[edit]Rolling efficiency

The methodology rejects the traditional efficiency metric (net leasable / gross buildable) in favour of Rolling Efficiency: the share of the floor that is actively leased and represented by a Key Plan matching a real tenant's furniture inventory.

A floor at 88% engineering efficiency with seven tenants in mixed Tile compositions, each at full utilisation within their leasehold, outperforms a floor at 100% engineering efficiency occupied by one tenant whose furniture does not fit the space. The catalogue is sized to guarantee full utilisation is always recoverable from a published combination.

[edit]PC vs SU class distinctions

Class	Floor plate	Floor count	Tile-family preference
Professional Centres	19,000–23,000 SF	3–5 floors	Small + Medium (high climate-zone count)
Suburban Office	17,000–21,000 SF	6–9 floors	Small at ground; Large for upper Corporate

Suburban Office buildings are taller and slimmer; their Tile choices skew toward maintaining Private Office sub-types at all floor levels. The variation lives in Special Tiles and Building Width, not in the Key Plans themselves.