A total of 1,156 buildings were constructed on the originally vacant lots in the residential portion of the Back Bay as defined for purposes of this website.   Of these, as of 2015, 99 have been demolished and replaced with 61 newer buildings or, in two cases, with a playground and a parking lot.

The maps below illustrate the progress of construction reflects for buildings within the residential portion of the Back Bay, plus buildings on the north side of Newbury. If an original building was replaced or rebuilt, the year of original building (not the replacement) is shown. If a replacement building occupied both a vacant lot and the site of a previous building (e.g., 314 Commonwealth at the southwest corner of Commonwealth and Hereford), the vacant lot is shown with the date of the replacement building and the previously occupied lot is shown with the date when the original house was built.

The dates used for these maps are based on original permit applications or similar documentation, when available. When no such documentation is available, the dates provided in Bainbridge Bunting’s Houses of Boston’s Back Bay are used.

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