PORTLAND PARKS ATLAS: A WORLD-CLASS PARK SYSTEM, THE TARGETED PATH
Exported 2026-10-25 by scripts/park_cost_model/export_world_class_path.py from the
Atlas's bottom-up world-class parks model (scripts/park_cost_model/world_class.py).
Shown at parks.portlandciviclab.org/how-parks-works/world-class.

This is an Atlas model, not a City plan or estimate. All dollars are 2026 dollars
with no escalation. Low, typical and high values carry the range of the unit costs.

FILES
targeted-path-lines.csv  Every cost line in the Targeted path, grouped as on the page:
                         quantity, one-time capital and added cost per year once built
                         (operating plus lifecycle reinvestment), low / typical / high.
                         "Citywide shared" lines sit outside the parks totals.
tiers.csv                The model's four ambition tiers side by side: Fix the
                         foundation, Top of ParkScore, World-class and the Targeted path.

METHOD
1. Portland today: 2020 Census blocks; a straight-line half mile (804.67 m) from the
   edge of each PP&R property (PortlandMaps parks layer); PP&R's FY 2026-27 adopted
   budget; PP&R's backlog ($759M, August 2026) and the 2024 Citywide Assets Report
   replacement value ($2.5B).
2. A target for each standard. Sources are named in the workbook's cell notes: TPL
   ParkScore 2026 maximum-points values, NYC Parks Inspection Program targets,
   Seattle's year-round restrooms, Minneapolis park keepers, the Royal Parks and
   Helsinki maintenance cost per acre, Portland's own 45% canopy goal. Restroom
   coverage (95%) and covered-place coverage (90%) are Atlas-set; no city publishes
   a distance standard for either.
3. Quantities: greedy siting curves place each new park, restroom or covered hub
   where it serves the most residents not yet served.
4. Unit costs: Portland and Northwest sources where they exist (SDC methodology,
   PP&R project budgets, Portland Loo contracts, the Equitable Tree Canopy program),
   escalated to 2026. Covered hubs, enclosed rooms and restroom winterization are
   Atlas assumptions (Madison, WI shelters; one PP&R winterization estimate).
5. Lifecycle reinvestment: 2% / 2.5% / 3.5% of non-land capital a year, and the gap
   between today's reinvestment and 2.5% of replacement value.

WHAT WOULD FIRM IT UP
PP&R work-order actuals, the list of restrooms closed in winter, asset-level
replacement values, current capital cost estimates, land values, and PBOT's
sidewalk and crossing costs. See parks.portlandciviclab.org/how-parks-works/records-request.

LICENSE
CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Credit:
Portland Parks Atlas, Portland Civic Lab (parks.portlandciviclab.org), CC BY 4.0.
Facts from City records stay public records; see ../LICENSE.txt for the scope.