Marine Case Studies: 40%

Quadrant Homes:

A 40% MarineCommunity

Climate: Marine

Builder/Developer: •Quadrant Homes

Community & Location: •Kentlake Highlands•Kent, WA

Number of Homes:

•>70 underway(across all communities as of today)

Status: •All 70 done by June 2008

BA Savings: 44%

Quadrant Homes – Who are they?

All Marine Builder 1,000 Homes a Year Weyerhaeuser Brand 60% first-time buyers

“More Home, Less Money” Average 2000 sq ft.

54 day Production Schedule

Quadrant Homes – Energy Features

Sound Energy House 2*6 16 ioc, R21 batts R49 Attic R30 under floor (crawl/bonus) Tight Envelope (3.4 ACH 50) .29/.29 windows HVAC System Inside 94 AFUE Furnace 50% CFL Energy Star Appliances .62 EF Tank DHW

Quadrant Homes

• “Must Meet” Gate Criteria

–Source Energy Savings–Market Coverage (>10 homes)–Neutral Cost Target

Energy analysis for Olympic 2011 floor plan (2,082 sq. ft.) using BEopt 0.8.6

BenchmarkWashington

CodeOlympic 2011

End Use (MBtu/yr) (MBtu/yr) (MBtu/yr)vs.

Benchmarkvs. Code

vs. Benchmark

vs. Code

Space Heating 115.9 76.3 52.4 54.8% 31.3% 25.2% 11.8%

Space Cooling 11.9 2.0 1.6 86.2% 19.4% 4.1% 0.2%

DHW 28.0 25.6 21.8 22.0% 14.7% 2.4% 1.9%

Lighting 28.4 28.4 12.9 54.5% 54.5% 6.1% 7.6%

Appliances and MELs

68.1 70.5 58.1 14.7% 17.6% 4.0% 6.1%

Total Usage/ Savings

252.2 202.8 146.9 41.7% 27.5% 41.7% 27.5%

DescriptionAnnual Source Energy Estimated Source Energy Savings

Percent of End Use Percent of Total

Quadrant Homes – Source Energy Savings

Quadrant - BEopt/Energy Gauge

House (MBtu/yr)Percent Savings

(MBtu/yr)Percent Savings

Benchmark 252.2 0.0% 264.5 0.0%

WA Code 202.8 19.6% 200.7 24.1%

Quadrant Code 177.1 29.8% 176.3 33.3%

Quadrant ES 149.2 40.9% 153.3 42.0%

Quadrant Sound Energy 146.9 41.7% 147.4 44.3%

DescriptionAnnual Source Energy

BEopt Energy Gauge

Assumes Puget Sound Energy (PSE) rates

Quadrant Homes – Neutral Cost Target

Annual Utility Bill Savings

vs. Benchmark

$611.57

$77.70

$61.37

$117.28

$83.09

$951.02

End Use

Space Heating

Space Cooling

DHW

Lighting

Appliances and MELs

Total Annual Utility Bill Savings

Assumes 7% mortgage over 30 years

Quadrant Homes – Neutral Cost Target

Annual Mortgage Cost

vs. Code

($21.24)

($10.70)

($31.93)

($28.10)

($67.70)

($159.67)

$951.02

($159.67)

$791.34

Energy Efficiency Feature

Energy Star Appliances

50% CFL Lighting

Duct Testing and Third Party Verification

R49 Attic Insulation

94% AFUE Furnace

Total Annual Mortgage Cost

Total Annual Utility Bill Savings

Total Annual Mortgage Cost

Net Annual Cash Flow to the Consumer

Quadrant Homes

• “Should Meet” Gate Criteria

–Marketability–Builder Commitment–Gaps Analysis–Quality Assurance

Quadrant Homes – Marketability

- 25-30% of Sales- Aiming at 300 total

Quadrant Homes Energy Cost

$0.00

$300.00

$600.00

$900.00

$1,200.00

$1,500.00

$1,800.00

$2,100.00

Washington Code House Quadrant Code House Quadrant Sound EnergyHouse

En

erg

y C

os

t (/

yr)

Fixed Charges

Misc. (G)

Lg. Appl. (G)

Hot Water (G)

Heating (G)

Cooling (E)

Cool Fan (E)

Heat Fan (E)

Lights (E)

Lg. Appl. (E)

Misc. (E)

$213.65 Utility Bill Savings

-$159.67 Mortgage Cost

$53.98 Annual Cash Flow to the Consumer_________

Quadrant Homes - Builder Commitment

Quadrant Homes Commitment to

1. Efficient Process-Driven Construction2. High Turn Rate3. Financial Bottom Line

Identifying Mutually Beneficial Solutions Key to Partnership

1. Whole-Building Approach to Whole-Business Approach2. BIRA’s success comes from deep understanding of what drives

Quadrant’s business and working within model

Quadrant will continue to build BA homes if:

1. Aligned with core values2. Buyers choose EE options

Quadrant Homes - Gaps

Insulated Mechanical roomstandard, although

unneeded for condensing 90+ Furnace

(BA Level)

Code Issues with Ducts Under Bonus Room and

Above Insulation

Federal Tax Credit1) Costs this year, credit

next

2) Quadrant pays costs, Weyerhaeuser gets credit

Quadrant Homes – QA & QC

Panelized Wall Sealing

Central Scheduling allows Site Supers to focus on execution

1. Quadrant enforces strict QC/safety

protocols

2. Protocols include BA QA/QC

3. Energy Star QA/QC (WSU)

40% Marine Joule: G3 Summary

Builder CommunityFFA of

Simulated Floor Plan

Source Energy Savings

Annual Utility Bill Savings

Annual Mortgage

Cost

Net Annual Cash Flow

Quadrant Homes

Kentlake Highlands

2082 sq ft 41.7% $951.02 ($159.67) $791.34

New Tradition Homes

Landover Commons

2250 sq ft 44.1% $990.61 ($290.24) $700.37

Ruhoff Home

Builders

Crescent Village

2350 sq ft 49.2% $1,328.98 ($885.22) $443.76

Schneider Family Homes

Village at Miller Creek

2019 sq ft 47.2% $1,138.86 ($360.50) $778.36

Tom Walsh and

CompanyNew Columbia 1884 sq ft 43.5% $943.60 ($272.68) $670.92