LID/Conservation DesignDeveloper Standpoint (Overview)

• Why developers tear down all the trees– Ramifications/costs

• What developers can and should do to mimic natural characteristics and hydrology of a site.

• Why developers will adopt LID principles• Obstacles; natural and man made

Timbers at Creekside-Kirkwood

Costs of Conventional Costs of Conventional Stormwater TreatmentStormwater Treatment

3 A.I.s @ $1,3003 A.I.s @ $1,300 $3,900$3,900

282’ of 12” RCP @ $18282’ of 12” RCP @ $18 $5,076$5,076

Additional Clearing & GradingAdditional Clearing & Grading $3,000$3,000

Rock ExcavationRock Excavation ????????????

TotalTotal $12,000$12,000

Costs of LID Approach

NOT $12,000!!!

Prairie Crossing outside of Chicago saved more than $4,400 per lot using LID

approaches and reinvested this money into community amenities and open space

(and gained significant lot premiums)

Blanket application of street design standards can create

excessively wide right-of-ways.

Photo Copyright 1999, Center for Watershed Protection

This photograph is an example of an open

channel.

Photo Copyright 1999, Center for Watershed Protection

Firetrucks & Ideas•Make the turnaround islands pervious with rolled curbs so trucks can drive on them if needed

•Make islands depressed so they can retain storm water (crown streets accordingly)

•Don’t allow plantings within 5 feet of street on cul-de-sac

•Don’t put a streetlight in the middle of the island

•Allow parking on only one side of street

PRINCIPLE NO. PRINCIPLE NO.

1212 Relax Setback & Relax Setback & Frontage Frontage DistancesDistances

Relax side yard Relax side yard setbacks and and allow narrower frontages to allow narrower frontages to

reduce total road length in the reduce total road length in the community. community.

Relax front setback Relax front setback requirements to minimize requirements to minimize

driveway lengths.driveway lengths.Copyright 1999 Center for Watershed Protection

Timbers at Creekside-Kirkwood

Belcher Homes

Courtesy: Wellspring Development Co.Belcher Homes

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N

House footprintSolar exposure

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Why developers ($$ & time) will use LID principles

• Entitling land– Green Tapping– NIMBYs

• Gain more lots

• Decreased sewer, street, grading, clearing costs

• Increased lot premiums • More perceived landscaping

• Saves trees reduce utility loads on homes higher sales price

• Embraced by municipalities

NOT THIS!!NOT THIS!!

More like this!More like this!

Or this!Or this!

ANSI 700

Released; February 5th, 2009Green Building is Codified!

Chapter #4 Site Design and Development

Belcher Homes

Conclusion

Not a linear process, integrated systems

Thank You!Matt Belcher

www.belcherhomes.com

Belcher Homes