LEED for Homes Rating System

affordable market rate multi-family

The top 25% of new homes based on performance and

environmental responsibility

Mainstream production and custom builders

TARGET MARKET

70%

REGULATIONSla

wbr

eake

rs

DEGREE OF GREEN

MARKET SHIFT

typical buildingpractices

market leadersinnovators

& risk takers20%5% 5%

Design and construction practices that meet specified standards reducing the negative impact of buildings on their occupants and on the environment.

LEED for Homes categoriesinnovation

and design

(ID)

sustainable

sites(SS)

location and

linkages

(LL)

indoor

environmental

quality

(IEQ)

materials and

resources

(MR)

water

efficiency

(WE)

energy and

atmosphere

(EA)

awareness

and

education

(AE)

Rating System

www.usgbc.org/leed/homes

LEED for Homes Project Checklist or

Scorecard

LEED for Homes Project Checklist

or Scorecard

How the Credit Structure Works

Credit #2: LandscapingIntent

Design and install landscape features that minimize demand for water and synthetic chemicals

RequirementsMandatory Measures

2.1Optional Measures

2.22.3

Verification / SubmittalsSynergies and TradeoffsAdditional Information

The Why

The What

The Review

LEED for Homes

Size Matters

LEED for Homes Size Adjuster

LEED for Homes Size

Adjuster

Discussion of Credits

Innovation and DesignLocations & Linkages

Sustainable SitesWater Efficiency

Energy and AtmosphereMaterial & Resources

Indoor Environmental QualityAwareness and Education

ID Credits

OverviewFour prerequisite measures9 points possible

Special FeaturesTo be used for innovative approaches to:

Exceed existing creditsAdopt new strategies / technologies not included in the rating system

Special process for verification (same as CIRs)USGBC will maintain a database of ID credits

LEED for Homes Innovation & Design ID2.1

LL Credits

OverviewParallel paths

Credit 1 (On-Hold), ORCredit 2 thru 6

No prerequisite measures10 points possible

Special FeaturesLL 3 Protect against sprawlLL 5 Minimize transportation needs

Sustainable Sites(SS)

The average U.S. citizen uses ten times the chemical fertilizer and pesticides on a lawn than the average farmer does on crops.

Source: the reporter, Fall 2003

SS Credits

Overview2 prerequisite measures21 points possible5 points required

Special FeaturesCompact development recognized and awardedSS 2 LandscapingSS 4 Surface water management

Water Efficiency (WE)

Per-capita water consumption is rising twice as fast as world population. At least 300 million people live in regions that already have severe water shortages; by 2025, the number could be 3 billion.

Source: PLANetWIRE

2.5 billion gallons of water are used every day to irrigate the world's golf courses.

Source: Time Magazine

WE Credits

OverviewNo prerequisite measure15 points possible3 points required

Special FeaturesWE 1 Rainwater & grey water systemsWE 2 High efficiency irrigation systemsWE 3 Indoor uses (lavatory, showers, toilets)

Energy and Atmosphere (EA)

If the global growth rate of energy use continues unchecked, the rate of worldwide energy consumption will double by 2035 and triple by 2055.

Source: WSSD

EA CreditsOverview

Parallel pathsCredit 1 ORCredit 2 thru 10 (except 7.1)

6 prerequisite measures38 points possible

Special FeaturesEA 1 Baseline of ENERGY STAR labeled homeEA 2 Pre-drywall inspection requiredEA 8 ENERGY STAR Advanced Lighting Package (ALP)EA 9 ENERGY STAR labeled appliancesEA10 Renewable electric generationEA 11 Residential refrigerant management

Materials and Resources (MR)

“Two-Thirds of World’s Resources Have Been Used-Up”Source: UK National Academy of Sciences, backed by 1,360 scientists from 95 countries.

MR Credits

Overview3 prerequisite measures14 points possible2 points required

Special FeaturesMR 1 Material efficient framingMR 2 Environmentally Preferable Products (EPPs)MR 3 Construction waste

LEED for Homes Environmentally

Preferable Products MR2.2

Delivery or Disposal?

Indoor Environmental Quality (IEQ)

In the U.S., the number of asthma sufferers grew by 75 percent between 1980 and 1994.

Source: Grist Magazine

Indoor Environmental QualityOverview

Parallel pathsCredit 1 ORCredit 2 thru 10

7 prerequisite measures20 points possible

Special FeaturesIEQ 2 Combustion ventingIEQ 4 Outdoor air ventilationIEQ 5 Local exhaustIEQ 7 Supply air filtrationIEQ 8 Contaminant controlIEQ 10 Garage pollution protection

Ventilation: 15 CFM per person + 0.01 CFM per sq. ft.

OR Prescriptive sizing table

OR(Refer to ASHRAE 62.2)

Equipment: Fans rated at < 1.5 sones

Controls: Accessible, labeled and operate > 8 hours/day

Awareness and Education (AE)

AE Credits

Overview1 mandatory measure1 point possible

Special FeaturesHA 1.1 Owner’s manual & walkthroughHA 1.2 Same + 3 hours training

Verification Process

Verification Process

Step 1: Preliminary Rating (by rater)1.1 Detailed plan review of a builder’s home design;

1.2 Performance testing of a typical example of builder’s homes;

1.3 Identify additional measures that may be needed; and

1.4 Preliminary LEED for Homes score / rating.

Verification Process

Step 2: Final Rating (by rater)2.1 Pre-drywall inspection;2.2 Final inspection and performance testing;2.3 Completion of project documentation file

(including: checklist, performance test reports, and accountability form); and

2.4 Final LEED for Homes scoring / rating.

Verification Process (cont’d)

Step 3: Certification (by Provider)3.1 Review of project documentation file that was prepared

by the rater

3.2 Completion of LEED for Homes rating

3.3 Presentation of LEED for Homes certificate to builder / homeowner.

3.4 Send notification of rating to USGBC

Verification Process (cont’d)

Resp.

Category Mandatory Optional

Performance TestingEnergy 1. ENERGY STAR Home Rater ⌧

3. Envelope Air Leakage Rater ⌧5. Duct Leakage Rater ⌧6. Refrigerant Charge HVAC ⌧

IEQ 4.3. Outdoor Air Flow Test Rater ⌧5.3 Exhaust Air Flow Test Rater ⌧6.2 Supply Air Flow Test Rater ⌧8.3 Contaminant Testing 3rd-Party ⌧

Special InspectionsEnergy 2.1 / 2.2 Insulation Raater ⌧ ⌧

Materials 4.2 Durability RaterEducation

Homowner Basic Walkthrough / Training Builder ⌧Awareness Comprehensive Walkthrough / Training Builder ⌧

Credit

List of Special Measures Performance Level

Instructions

General Information

Builder Name:

Subdivision Name:

House Address:

Provider's Name:

Rater's Name:

Sampling Protocol Used: (Y / N)

LEED Score: / 100 Points

LEED Rating Achieved: (Certified, Silver, Gold, Platinum)

HERS Score Achieved: / 100 Points

Location & Linkages Water Efficiency2 Site Selection 1.1 Water Reuse; Rainwater Harvesting

5.1 Average Housing Density >/= 7 Units / Acre 1.2 Water Reuse; Grey Water Reuse5.2 Average Housing Density >/= 10 Units / Acre 2.2 Irrigation System; High Efficiency Measures5.3 Average Housing Density >/= 20 Units / Acre Materials and Resources

Sustainable Sites 1 Smaller Home2.1 Basic Landscaping Design 4.1 Durability Plan; (Pre-Construction)2.4 Minimize Landscape Water Demand Energy and Atmosphere

Indoor Environmental Quality 2.3 Insulation; Above Code3 Humidity Control System 6.1 HVAC Meets ENERGY STAR for HVAC

4.1 Outside Air Ventilation; Meets ASHRAE/Std 62.2 10 Renewable Electric Generation System5.1 Local Exhaust; Meets ASHRAE Std 62.2 11 Residential Refrigerant Management6.1 Supply Air Distribution; ACCA Manual D Innovation and Design Process 9.1 Radon Protection; Install System, EPA Zone 1 1.1 Provide Description and Justification9.2 Radon Protection; Install System, Not EPA Zone 1 1.2 Provide Description and Justification

Homeowner Awareness 1.3 Provide Description and Justification1.1 Basic Owner's Manual & Walkthrough 1.4 Provide Description and Justification1.2 Comprehensive Manual & Multiple Walkthroughs

Official Certification (to be Completed After Final LEED for Homes Rating)

Responsible Party Date Printed Name

Project Role / Title Organization / Company

Signature

All declarations and affirmations made in this accountability form are made to USGBC solely for the purpose of assisting USGBC in determining whether LEED Certification is merited. No such declaration or affirmation can be construed as a warranty or guarantee of the performance of the building.

By affixing my signature below, the undersigned does hereby declare and affirm to the USGBC that the LEED for Homes requirements, as specified in the LEED for Homes Rating System, have been met for the indicated credits and will, if audited, provide the necessary supporting documents (drawings, calculations, etc.).

Overall Performance Data

This form is to be completed by the person / organization responsible for the design and/or implementation of one or more of the LEED for Homes credits below. A separate form shall be completed by each design professional responsible for one or more credits.

Areas of Accountability

Accountability Form

(Version 1.7, August 12, 2005)

Step 1. Review the requirements for the credits in the LEED for Home Rating system for which you are responsible.

Step 5. Complete the Official Certification section at the bottom of the form.Step 6. Maintain a project documentation file to assist in the event of an audit of your credit(s) or of this project by the USGBC.

Step 4. In the Areas of Accountability section, check boxes to indicate the LEED for Homes credits for which you have the

Step 2. Complete the General Information section of this form.Step 3. Skip the Overall Performance Data section of the form (to be completed by Provider/Rater).

primary design/implementation responsibility.

Accountability Form

Key Lessons Learnedin Pilot

• Importance of Integrated Design Process

• Importance of “Green” Building Science

• Improvements in the Rating System

Importance of Integrated Design Process

#1: Project Goals

#2: Project Team

#3: Integrated Design

#4: Quality Assurance Procedures

#1: Project Performance Goals

Simple

Compelling

Shared (Included in Specifications)

Measurable (Inspected / Tested)

Contractually Tied to Payment

#2: Project Team

A Clear, Singular Vision

Identify Challenges

Find Appropriate Expertise

Regular Meetings

Everyone Must Be On-Board No Whiners!

design team

3rd party verifier(field inspectors)

Integrated Team

contractors

Consultants(design reviewers)

#3: Integrated DesignAre Goals Clear?

Include key contractors in process early

Is the team communicating effectively?

What systems interact? What Challenges Need to be Addressed?

Review design and changes (against goals and priorities)

Design Costs

Perf

orm

ance

Con

stru

ctio

n co

st

IEQMoisture

Energy

Integrated Design ExampleEnergy Efficient Home

Local exhaust,And humidity control

Combustion venting / safety,

and radon

Energy efficient envelope and HVAC systems

Build tight,ventilate right, and heat recovery

Exterior water management

Vented crawlspaces,conditioned attics, and interstitial water management

Benefits:HealthyComfortDurable

Energy Efficient

IEQWater

Materials

Energy

Site

Efficient fireplace

Low VOC Materials

Design smaller home size

Integrated Design Example:Green Products and Practices

Landscaping andrainwater harvesting

Benefits:HealthyComfortDurable

Energy EfficientEnv. Responsible

Low flow faucets,showers and toilets

Recycled, salvaged,and locally sourced products; Reduced construction waste

Select compact, infill site close to community resources

ENERGY STAR windows, appliances and lighting

Efficient hot water distribution system Central vacuum and

Improved air filters

#4: Quality Assurance Process

• Clearly communicate standards and expectations

• Show trades what is wanted

• Ask for input on better approaches

• Check and stop work/correct early

• Verify and recognize success

• Avoid end-of-pipe quality control

Early Design

Detailed Design

Construction Specifications

& Drawings

Construction

Quality Assurance?

Scopes of Work

Trade Sign-O

ff

Supervisor Sign-Off

Project Team

Project Goals

Team Meetings

Design R

eviews

Design ReviewsSystems

Integration

3rd Party V

erification

Show G

reen Measures

No Credits, Just Prerequisites!

Site Selection

Energy

Materials

Materials

Materials

Water

Indoor Environmental Quality

Beauty & Inspiration