Specific Instructions, Line 1
To qualify for the credit, any qualified energy efficiency
improvements or residential energy property costs
must have been for your main home located in the
United States. See Main Home on page 3. If you check
the "No" box, you cannot take the nonbusiness energy
property credit.
General Instructions Page 3...
Home. A home is where you lived in 2007 and may
include a house, houseboat, mobile home, cooperative
apartment, condominium, and a manufactured home
that conforms to Federal Manufactured Home
Construction and Safety Standards.
You must reduce the basis of your home by the
amount of any credits allowed.
Main home. Your main home is generally the home
where you live most of the time. A temporary absence
due to special circumstances, such as illness,
education, business, military service, or vacation, will
not change your main home.
Special rules. If you are a member of a condominium
management association for a condominium you own
or a tenant-stockholder in a cooperative housing
corporation, you are treated as having paid your
proportionate share of any costs of such association or
corporation.