Sidewalk Obstruction Permit Application


A Sidewalk Obstruction permit is required for any type of sidewalk obstruction in the right-of-way in the City of Cambridge.  Please be sure to understand and meet all of the permit requirements before starting the application process as permits will not be issued until all requirements are met.

NEW  Public Works now offers the purchase of permits online.  View online permit instructions for complete details.  Please note that PIN numbers are required for contractors (see instructions).

NOTICE  Methods of payment include:  Visa, MasterCard or Discover credit cards, Visa & MasterCard debit cards or Electronic check (E-checks).  A convenience fee will be charged for each purchase:  2.5% of the purchase for Visa, MasterCard or Discover and a $2.00 flat fee for payments made by E-check.  Learn more about online payments and convenience fees.  You will be taken to a secure, third party, payment processor, Velocity Payment Systems to submit payment online.

You can still download a paper application and return it to the Public Works office at 147 Hampshire Street.  If you have any questions, please call the Permit Administrator at 617.349.4833 or email  

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Dept of Public Works

147 Hampshire St
Cambridge MA 02139


Hours of Service

Monday: 8:30am-8:00pm
Tuesday-Thursday: 8:30am-5:00pm
Friday: 8:30am-12 noon
24 Hour emergency 617.349.4860


Tuesday & Thursday: 4:00pm-7:30pm
Saturday: 9:00am-4:00pm

Owen O'Riordan