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        Green Building
    Certification Program



Changes as of April 11, 2014:
Minor revisions to 'Construction Waste Management' and 'Renewable Products' techniques/spreadsheets.
Addition of a new voluntary technique 'Alternative Sustainable Construction' - see details below.

The Johnson County Green Building Certificate Program was developed by county staff during the summer of 2012 to provide a means of recognizing local builders who go above and beyond code compliance regarding energy efficiency and general sustainable construction practices for newly constructed single-family homes.  Additionally, the program intends to spread awareness of green building practices to Johnson County residents.

Leaf BulletHow It Works

The Green Building Certificate Program is entirely voluntary. To earn certification as a Johnson County Green Building, contractors must comply with the three required sustainable construction techniques and at least eight of 11 voluntary sustainable construction techniques (see below). These techniques were modeled after the ICC 700-2008 National Green Building Standard and the United States Green Building Council’s Leadership in Energy and Environmental Design rating system.

Builders wishing to participate in the program must complete all required paperwork, which will be reviewed by county staff. The program is not intended to be a burdensome process for those who elect to participate. To help with the ease of certification, most of the process can be completed electronically.  

Leaf BulletInstructions

Builders seeking Green Building certification must comply with all required sustainable construction techniques and at least 8 of the voluntary sustainable construction techniques listed below. Click each technique for further instructions and calculations.  Once credit templates are completed, you will need to save each template as a separate file to your computer.  You can either e-mail the files and supporting documentation to greenbuild@co.johnson.ia.us or print and provide hard copies to the Planning department.

Leaf BulletDeadlines

• Inform Planning of your intent to earn the certificate when you apply for your building permit.

• Submit your green building documentation as you work through the building permit and inspection process. Documentation for some required and voluntary techniques must be submitted five (5) business days PRIOR to picking up your building permit. Documentation for the remaining required and voluntary techniques must be submitted five (5) business days PRIOR to the final occupancy inspection. Please see the Green Building Certificate Program Builder Check-Off SheetAbobe Icon for details.

• In most cases, staff will be able to issue the certificate within a few weeks of your final submission.

Leaf BulletMore InformationAbobe Icon

Menu block Information Green Bars

Project Information IconProject Information   *Click here to begin

Menu block Required Red bars

Storm Water IconStorm Water Management*: Address the quantity and quality of storm water runoff on the project site.

Water Use IconWater Use Reduction*: Increase the water efficiency of flow and flush fixtures so that the green home uses at least 20% less water than a traditional code compliant home.

Energy Cost IconEnergy Cost Performance Levels *: Incorporate energy efficiency features to achieve one of two performance standards.


Menu block Voluntary Orange bars

You must complete at least 8 of the following;

Soil Disturbance IconSoil Disturbance and Erosion: Minimize on-site soil disturbance and erosion.

Sustainable Landscape IconSustainable Landscape Plan: Limit water and energy use while preserving or enhancing the natural environment.

Heat Island IconHeat Island Mitigation – Non-roof:  Use various strategies for 50% of the site’s non-roof hardscape to reduce energy costs.

Heat Island IconHeat Island Mitigation – Roof:  Use light-colored roofing materials for at least 75% of the roof surface.

House Size IconHouse Size:  Conditioned, above-grade, floor area is limited to 2,000 square feet.

Salvaged Material IconSalvaged MaterialsUse reclaimed and/or salvaged materials and components where value equals at least 1% of the total material cost; excluding mechanical, plumbing and electrical.

Recycled Content Icon Recycled ContentUse materials and components with recycled content where value equals at least 20% of the total material cost; excluding mechanical, plumbing and electrical.

Construction Waste IconConstruction Waste Management:  Divert at least 50% (by weight) of construction waste from the landfill OR use advanced framing construction techniques.

Renewable Products IconRenewable Products:  Use renewable building material products that have a growing lifecycle of 10 years or less OR use lumber products that are sustainability harvested and are certified by the Forest Stewardship Council (FSC). In either case, total value must equal at least 1% of the total material cost excluding mechanical, plumbing and electrical.

Local Products IconLocal Products:  Use local building material products that are extracted, harvested, manufactured, and purchased within a 500-mile radius of the project site and where value accounts for at least 30% of the total material cost; excluding mechanical, plumbing and electrical.

 Alternative TechniqueAlternative Sustainable Construction Technique :  Suggest a technique not already listed and identify how compliance will be demonstrated.  This technique must be PRE-APPROVED by Planning Development & Sustainability Staff.  This category helps promote innovative practices that save resources or energy.

*Required for all projects

Leaf BulletContact Info

For further assistance, contact Josh Busard, Planning, Development & Sustainability Department.  Phone: 319-356-6083