Shared parking takes advantage of peak activity periods among different facilities or functions. For example, administrative facilities are typically most active from 0700 to 1700. The parking area may be used for an alternate function, such as a community center or chapel, outside of these hours. Shared parking also takes advantage of scenarios where use alternates by day rather than hour (i.e. chapel and CDC). Training exercises often vary by day or week .

Figure 1. Opportunities for shared parking should be explored whenever possible

Multiple benefits can be achieved by implementing shared parking.

• Up front project costs decrease since a smaller amount of land and flatwork are required.
• Utility loads and related expenses resulting from the heat island effect are minimized.
• Stormwater management systems may be reduced since less impermeable surface occupies the site.

Figure 2. Shared parking example for the Chapel and Child Development Center at Schriever AFB

When considering shared parking, ensure parking area meets the minimum area required for any one of the functions it serves. Additional features which may be implemented to improve the sustainable value of a shared parking lot or parking structure include:

• close proximity to pedestrian circulation paths
• close proximity to shuttle bus stops
• rain gardens
• permeable pavements or pavers
• high albedo paving materials
• depressed parking with open curbs
• preferred parking for low emission and fuel efficient vehicles

Shared parking is a potential strategy to achieve the intent of LEED SS Credit 4.4, SS Credit 5.1, SS Credit 5.2, SS Credit 6.1, and SS Credit 6.2. Refer to the LEED Guidance section for specific requirements.