The Parker cellar lies just below the kitchen floor and is accessed by a door decorated with a charming photo of the young Parkers: Pat Parker looked like a double for Natalie Wood, while Mr. Parker looked like Jack Nicholson in his prime.

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This 19th-century townhouse was converted to condo apartments, but retains many of its period charms, including a double parlor with walnut wood panels.

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That will double by 2010, according to a Wood Mackenzie study.

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The elegantly styled rooms feature kitchen, living, and sleeping spaces, with a wood-burning fireplace and a double-wide jetted bathtub.

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Improvements will include the creation of a wood and bike storage area, double glazing, a new roof and the installation of solar panels.

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The result is very modern, particularly toward the back of the home: The dining room opens to the midcentury-modern and Japanese-influenced wood-and-steel kitchen, where double-panel cabinet doors are made from laser-cut steel and feature an abstract design modeled after a historic map of the neighborhood.

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Estimates are that it cost double that of a coal unit, which produce twice the oomph, or BTUs, as do wood chips.

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