The Montgomery County Moderately Priced Dwelling Unit (MPDU) Program was one of the first successfully implemented inclusionary zoning programs in the country, dating back to 1974. The Program requires that a percentage of housing units in residential developments be made available for low- and moderate-income households for a certain timeframe (?control period"). To maintain affordability, the County imposes certain resale and occupancy restrictions on the MPDUs during the control period.

The MPDU program is primarily implemented through two sections of the Montgomery County Code: Chapter 25A, known as the Moderately Priced Housing law, which lays the foundation for the MPDU Program, and Chapter 59, the Montgomery County Zoning Ordinance, which specifies the applicable zones, sets the applicable zoning bonus densities, and sets the site plan requirements for Montgomery County.

To learn more about the program goals, legal framework, and history, click on the link below to open each section and topic .