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Brownfield-First Siting Rule

Siting rule — instantiates Internal Capacity Deepening

A siting rule that forbids consuming a new external site until the already-disturbed, already-connected, and underused internal sites have been evaluated and ruled out.

Left to instinct, growth reaches for a fresh site — a new building, a new parcel, a greenfield — because it looks clean and simple. Brownfield-First Siting Rule reverses that default: it makes evaluating the already-disturbed, already-connected, and underused sites inside the current boundary a mandatory precondition before any new external site may be consumed. Its defining move is procedural sequencing — internal reuse is not merely encouraged, it is the required first check, and expansion outward becomes the justified exception rather than the reflex. The rule leans on one fact the greenfield instinct ignores: a site that is already serviced with power, access, and support has had much of its real cost paid, so reusing it is usually far cheaper than the tidy-looking new one.

Example

A growing company needs more lab and office space, and the instinct in the room is to lease a bright new building across town. The rule stops that until three things are on the record: a map of the space the company already owns or leases (the boundary of what counts as internal), a read of which of those floors are already serviced with the power, ventilation, and network a wet lab needs (the connected sites), and the intensification opportunity map — which shows a floor sitting at 45% desk occupancy and a mothballed lab two floors down. Only if those internal options are genuinely evaluated and found insufficient may the new lease proceed. In this case the mothballed lab is refit at a fraction of the new-building cost, and the external lease is deferred.

How it works

  • Reorder the default. The internal-reuse review is a gate placed before any external-site decision, so the cheap-looking greenfield option can't be chosen without first ruling out reuse.
  • Bound what "internal" means. A boundary map fixes which owned, leased, and controlled sites the rule must scan, so the internal option set can't be quietly defined as empty.
  • Rank by connectedness. Already-serviced sites are surfaced and preferred, because the infrastructure a greenfield site would have to build from scratch is already sunk in them.

Tuning parameters

  • Strictness — a hard bar or a rebuttable presumption. A hard bar maximizes reuse but can trap a genuinely bad internal fit; a rebuttable presumption allows documented exceptions.
  • Exhaustion threshold — how fully internal options must be ruled out before external is allowed. Set high and reuse is forced; set low and the rule becomes a formality.
  • Connectedness weighting — how much existing infrastructure counts as a tiebreaker. Heavier weighting favors serviced sites more strongly.
  • Boundary scope — owned only, or leased and partner sites too. A wider boundary finds more internal capacity but complicates the scan.
  • Waiver authority — who can override the rule, and what evidence a waiver requires.

When it helps, and when it misleads

Its strength is countering the "expansion looks simple" bias structurally: it forces the off-ledger internal options into view before the decision, and captures the real cheapness of sites whose infrastructure cost is already paid.

Its failure modes are the mirror of its strength. Applied dogmatically it can force reuse where adaptive refit genuinely costs more than building new — a decayed internal site is not automatically the frugal choice. It can drive escalation of commitment: pouring money into a poor internal site precisely because the rule says internal-first, throwing good money after sunk cost.[1] And it invites a token internal review — a box ticked so the greenfield choice can proceed unchallenged. The discipline is a documented, reviewable rebuttal path and an honest side-by-side of refit cost against new-build, so the rule biases the default without overriding the evidence.

How it implements the components

  • system_boundary_map — defines what counts as "internal" (owned, leased, controlled) versus a new external site, setting the domain the rule scans first.
  • infrastructure_and_support_capacity_map — identifies which internal sites are already serviced with the power, access, and support a greenfield site would have to build, the rule's cheapness tiebreaker.
  • internal_intensification_opportunity_map — the register of underused internal sites the rule requires be evaluated and ruled out before any external site is consumed.

It does not take the point-in-time inventory of idle positions the map draws on (internal_position_inventory) — that's Occupancy and Idle-Capacity Audit; nor actually execute the reuse (migration_pathway) — that's the Infill and Adaptive-Reuse Program and Consolidation Migration Plan.

References

[1] Escalation of commitment — the tendency to keep investing in a chosen course to justify prior commitment, even as evidence sours. A "must reuse internal" rule can feed it; the guard is a rebuttal path that lets a genuinely bad internal site be abandoned on the record. ↩