CS-2009 MPR7: Must comply with a minimum building area to site area ratio

  • MPR7 Supplemental Guidance from USGBC

    This Bird's Eye View text is from USGBC's MPR Supplemental Guidance Revision #2. See the Credit Language tab for the MPR requirements.

    INTENT

    Because LEED is a rating system for buildings, it is appropriate to restrict the amount of land associated with a LEED certified project.

    SPECIFIC ALLOWED EXCEPTIONS

    None

    ADDITIONAL INFORMATION AND CLARIFICATIONS

    Calculation method for determining gross floor areaGross floor area (based on ASHRAE definition) is the sum of the floor areas of the spaces within the building, including basements, mezzanine and intermediate‐floored tiers, and penthouses wi th headroom height of 7.5 ft (2.2 meters) or greater. Measurements m ust be taken from the exterior 39 faces of exterior walls OR from the centerline of walls separating buildings, OR (for LEED CI certifying spaces) from the centerline of walls separating spaces. Excludes non‐en closed (or non‐enclosable) roofed‐over areas such as exterior covered walkways, porches, terraces or steps, roof overhangs, and similar features. Excludes air shafts, pipe trenches, and chimneys. Excludes floor area dedicated to the parking and circulation of motor vehicles. ( Note that while excluded features may not be part of the gross floor area, and therefore technically not a part of the LEED project building, they may still be required to be a part of the overall LEED project and subject to MPRs, prerequisites, and credits.) to site area ratio

    [ Gross Floor Area (gsf) / Site Area (sf) ] x 100

    EXAMPLE

    A 4,000 square foot building is located on a five acre (217,800 sq ft) site:

    [4,000/ 217,800] x 100 = 1.8%

    This building must claim only 4.6 acres (200,000 sq ft) within its LEED project boundary to meet the 2% building area to site area minimum.

    There is no maximum ratio

    There is no maximum building area to site area ratio.

    Addressing conflicts with MPR #3

    If a LEED project boundary must be adjusted in order to meet this MPR, the adjustment must be done such that the new boundary also complies with MPR #3, Must Use a Reasonable Site Boundary. If there is a conflict, this MPR takes precedence. In other words, the project team may eliminate land that is usually required by MPR #3 to be within the project boundary, in order to comply with this MPR. However, the elimination must be done in a reasonable fashion; the project team cannot remove land specifically because it would not comply with another MPR, prerequisite, or credit requirement.

    Projects without land in the LEED project boundary comply by default

    If there is not any land included within the LEED project boundary (as will typically be the case with LEED-CI projects), the project will be in compliance with this MPR by default.

    Treatment of land used with SSc5 Site Development –Protect or Restore Habitat in LEED-EB: O&M Off-site land used to earn Sustainable Sites credit 5 in LEED-EB: O&M must be included in the calculations for this MPR.

  • USGBC

    Excerpted from LEED 2009 for Core and Shell Development

    MPR 7: Must comply with a minimum building area to site area ratio

    Intent

    Requirements

    All rating systems

    The gross floor areaGross floor area (based on ASHRAE definition) is the sum of the floor areas of the spaces within the building, including basements, mezzanine and intermediate‐floored tiers, and penthouses wi th headroom height of 7.5 ft (2.2 meters) or greater. Measurements m ust be taken from the exterior 39 faces of exterior walls OR from the centerline of walls separating buildings, OR (for LEED CI certifying spaces) from the centerline of walls separating spaces. Excludes non‐en closed (or non‐enclosable) roofed‐over areas such as exterior covered walkways, porches, terraces or steps, roof overhangs, and similar features. Excludes air shafts, pipe trenches, and chimneys. Excludes floor area dedicated to the parking and circulation of motor vehicles. ( Note that while excluded features may not be part of the gross floor area, and therefore technically not a part of the LEED project building, they may still be required to be a part of the overall LEED project and subject to MPRs, prerequisites, and credits.) of the LEED project building must be no less than 2% of the gross land area within the LEED project boundary.

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Feb 21 2017
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