The Building Services Division is responsible for the administration of the Ontario Building Code Act and related Council approved Building By-Law. It oversees the permit application process; ensures that all other applicable laws are in compliance; issues building permits, and provides inspections for all new or renovated building construction. It also administers the issuance and approvals of permanent signs under the Town's Sign By-Law.

The Policy Planning Division is responsible for growth management in the Town through the Town's Official Plan, Long Range Planning,  along with Population Forecasts and demographic analysis.  The Policy Planning division is also responsible to ensure that the Town's approved planning documents remain in conformity with Regional and Provincial Plans, along with providing interpretations of the Regional and Provincial plans as they relate to planning applications in the Town.

The Development Planning Division is responsible for managing planning and development approvals in the Town as required by the Planning Act, implementation of urban design through development approvals, maintenance and implementation of the Town's Comprehensive Zoning By-law, Cultural Heritage Resource Management and Planning, administration of the Committee of Adjustment and providing customer service for local resident/business inquiries.

The Economic Development Division provides support to the local business community and undertakes initiatives to encourage new investment and promote entrepreneurial activities in the Town. This includes encouraging the retention and expansion of existing business, attracting new industry and employment growth.

Economic Development also creates the monthly On the Road. "On the Road to Whitchurch-Stouffville" is a business and tourism-oriented community newspaper, plus official town news.