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Surface Parking Lot

FAC-SPL-04
Situational / Discouraged Facility

Surface Parking Lot

An at-grade, open-air parking area serving adjacent land uses, ranging from a small business lot to a large-format shared or municipal lot.

Pattern viewer

Overview

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No illustration of Surface Parking Lot has been made yet. Interactive views are planned for every pattern and Retrofit Strategy.

#Why this pattern exists

Surface lots are the most common and land-intensive parking facility, and their design choices (stall layout, stormwater handling, pedestrian access, landscaping) carry outsized impact on both the immediate streetscape and the site’s runoff and heat-island footprint. This pattern exists to document the tradeoffs specific to at-grade, uncovered parking, distinct from the structural and circulation problems a parking garage presents.

#Key considerations

  • Pedestrian paths through and across the lot should be clearly delineated rather than left to informal desire lines between parked cars2
  • Stormwater management (permeable paving, bioswales, tree canopy) should be integrated into the lot design, not treated as an afterthought1
  • Lot placement relative to the building and street matters: a lot between the building and the street undermines the streetscape it fronts

Parking Garage/Structure (FAC-PGS-05) (structural alternative for higher-density sites); Pervious Pavement (ELM-PVP-22), Bioswale (ELM-BIO-19) (related Element patterns for stormwater treatment); Park-and-Ride (FAC-PNR-06) (a specific use case of surface parking)

#References

  1. Legal / regulatory EPA, Reducing Urban Heat Islands: Compendium of Strategies, "Trees and Vegetation" and "Cool Pavements" chapters (2008; Cool Pavements chapter updated 2012). Direct source for the runoff and heat-island footprint claim above.(opens in new tab)
  2. Precedent-based ULI/National Parking Association, The Dimensions of Parking. Circulation, stall layout, and access design standards.(opens in new tab)

"Legal / regulatory" here refers to the EPA guidance that municipal NPDES stormwater permits and heat-island mitigation programs are legally built around, not a single mandatory design spec like MUTCD or PROWAG.

Suggest changes to this page (opens in new tab) Text-only version Last updated October 16, 2026