Whom do I contact to report about an illegal addition on a home?
If you believe that someone is illegally constructing an addition, you may call the Building Department at 650-375-7411 to see if there is a Building Permit on record. The Building Department will need to have the street address in order to search the files. If it is determined that work is being done without a permit, a Building Inspector will be sent to investigate the job.

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1. What can I do about construction noise?
2. What can I do about trees blocking my view?
3. Whom do I contact to report about an illegal addition on a home?