CDD is open to the public, by appointment only. Appointments are available for housing, zoning, business and entrepreneurship, Cambridge Energy Alliance, or other general planning matters. If you need to meet with a specific person, please contact them directly to schedule an appointment. Appointment requests by phone or email are strongly encouraged to ensure you are connected with the appropriate staff. Housing appointments can be made online, by phone at 617-349-4622 or by email at firstname.lastname@example.org. Appointments for all other CDD matters can be made online, by phone at 617-349-4600 or by email at CDDat344@cambridgema.gov.