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* 1. What kind of home is it?

Did you know? Townhouses and semi detached are more efficient.

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* 2. Is there space at the perimeter of the home before the property line? (e.g. minimum 4-5 feet)

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* 3. Was the home built before 1980?

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* 4. Does the home have a simple shape like a box?

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* 5. Is the exterior of the home in need of replacement?

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* 6. What is the home's roof shape?

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* 7. Is there good sun exposure for the roof?

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* 8. Have there been major upgrades recently to the home?

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* 9. Does the home have significant maintenance issues?

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* 10. Are there hazards such as asbestos or knob and tube wiring in the home?

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