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Liberty Mutual Office Expansion at 157 Berkeley

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Welcome to Liberty Mutual’s 157 Berkeley Street website.

On this site you will find an overview of Liberty Mutual’s world headquarters expansion project, including a timeline, artists’ renderings, key milestones and updates on progress.

Please note that the information, including, without limitation, timelines, renderings, milestones, schedules, dates and the like, contained on this site is for general information purposes only.  All information is subject to change on a regular basis without notice.

Visit often to keep informed of current construction activity and for updates on what to expect in the coming weeks and months.

Throughout the process our goal is to be as respectful and responsive as possible. Please email us at for additional project information.

If you have any immediate construction concerns, or you need to report a construction related problem, please call Turner Construction’s hotline at 617-212-3117.