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Thread: Who comes up with lot coverage standards?

  1. #1
         
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    Who comes up with lot coverage standards?

    Does anyone know how a municipaly comes up with the percentages for maximum lot coverage? How does a number like 25% (or whatever) come to be? Is the regulation based primarily on visual aspects or do drainage concerns, etc. really play much of a role? Any insight would be very much appreciated.

    THANKS!

  2. #2
    Unfrozen Caveman Planner mendelman's avatar
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    I probably comes mstly from drainage/perivous needs. Otherwise, it would a rather arbitrary, aesthetic basis.
    I'm sorry. Is my bias showing?

    The ends can justify the means.

  3. #3
    Super Moderator luckless pedestrian's avatar
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    It's an ancient Mayan calculation, found long ago in a cave...

    I guess I agree with Mendelmen - typically I see it more as a fraction in my head - by example that in some areas, a third of the site being covered is better than 3/4

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    Cyburbian Richmond Jake's avatar
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    There's this magic 8 Ball on my desk....well, you get the picture.
    Annoyingly insensitive

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    Cyburbian Emeritus Chet's avatar
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    Up here, he pull them out of our butts.

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    Cyburbian donk's avatar
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    I just went through this and had to do a justification report for a number we chose.

    It is for a neighbourhood that is "histortic" so what we did was pull every site plan agreement, zoning by-law application, and variance application and review each of them for lot coverage, yard setbacks and gross floor area. we then used these numbers and reccomednations from the public about which "new" buildings they liked and came up with a number.

    For the rest of the municipality they went with the average IQ of the developers in the area.
    Too lazy to beat myself up for being to lazy to beat myself up for being too lazy to... well you get the point....

  7. #7

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    It depends. A lot of them are essnetially arbitrary attempts to enforce a certain character or aesthetic. But there are clear relationships between impervious cover and the health of the watershed, so you can start there if you want lot coverages that are based in reality. My advice in evaluating a lot coverage standard is to look at actual and hypothetical examples (and document these studies in your files) to see what applies in practice. You also have to be wary of varying definitions. Some communities include parking in lot coverage and some don't. Overall, I think that impervious coverage is a reasonable, defensible standard, but that most lot coverage standards don't really stand up to close scrutiny.

  8. #8
         
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    Thanks everybody!! I appreciate the input

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