Affirmative Fair Marketing Plan
A plan for the marketing of Subsidized Housing Inventory (SHI) Eligible Housing, including provisions for a lottery or other resident selection process, consistent with guidelines adopted by the Department, and providing effective outreach to protected groups underrepresented in the municipality. The plan shall not permit any discrimination on the basis of race, creed, color, sex, age, disability, familial status, sexual orientation, national origin or any other legally protected category in the leasing or sale of SHI Eligible Housing (EOHLC Definition). More information can be found here.
Affordable Housing
Housing that is income-restricted to low- or moderate-income households and typically costs no more than 30% of a household’s income.
Area Median Income
Area median income is defined as the midpoint of a specific area’s income distribution and is calculated on an annual basis by the Department of Housing and Urban Development. HUD refers to the figure as MFI, or median family income, based on a four-person household. More information about AMI can be found here, as well as the current AMI for 2025 by county.
Chapter 40B
The EOHLC (Executive Office of Housing and Livable Communities) utilizes Chapter 40B (also known as the Comprehensive Permit Law) as a key tool within its broader housing initiatives to promote the development of affordable housing throughout Massachusetts. Chapter 40B establishes a mandate for every community in Massachusetts to have at least 10% of its housing stock designated as affordable. In communities below this 10% threshold, Chapter 40B allows developers to bypass local zoning bylaws and restrictions to facilitate the construction of affordable housing developments. These developments are required to include a minimum of 20-25% affordable units with long-term affordability restrictions. Access more information.
Community Preservation Act (CPA) Funds
Municipal funds raised through a local property tax surcharge, used to support affordable housing, open space, historic preservation, and recreation. CPA funds can support LAUs. Access more information.
Comprehensive Permit
A streamlined permitting process for affordable housing developments that allows developers to bypass some local zoning if a project meets state affordability criteria. LAUs are not created through this process. The permit is issued by a Board pursuant to M.G.L. c. 40B, §§ 20 through 23 and 760 CMR 56.00. Access more information.
Deed Rider
A legal document attached to the property deed that establishes affordability restrictions, such as resale conditions and income eligibility, to ensure long-term affordability.
HOME Investment Partnerships Program
The HOME Program is a federal housing subsidy program administered by the state, certain large cities, and certain groups of municipalities that have formed a HOME consortium. Access more information.
Income Eligible Household
A household of one or more persons whose maximum income does not exceed 80% of the area median income, adjusted for household size, or as otherwise established by the Department in guidelines. For homeownership programs, the Subsidizing Agency may establish asset limitations for Income Eligible Households by statute, regulations, or guideline. In the absence of such provisions, Income Eligible Households shall be subject to asset and/or other financial limitations as defined by the Department in guidelines. (EOHLC Definition).
Local Initiative Program (LIP)
The Local Initiative Program (LIP) is a state program that encourages the creation of affordable housing by providing technical assistance to communities and developers who are working together to create affordable rental or ownership opportunities for low- and moderate-income households. There are two types of LIPs: LIP 40B Chapter 40B Comprehensive Permit developments (also known as a Friendly 40B) and LIP LAU Local Action Units (LAUs). Local Action Units are created when the units are permitted under an Inclusionary Zoning Bylaw or Special Permit or the units are existing. Monitoring LIP units and developments is a shared responsibility between the municipality and EOHLC. Access more information.
Local Preference
A provision allowing municipalities to give priority in affordable housing lotteries to current residents or workers, subject to fair housing laws.
Lottery Agent
A third-party professional responsible for conducting affordable housing lotteries and verifying applicant eligibility according to fair housing and program rules.
Monitoring Services Agreement
An agreement between a municipality (or its designee) and the developer or property owner that outlines responsibilities for annual monitoring of income eligibility, affordability, and unit use.
Regulatory Agreement
A legally binding agreement that establishes the affordability requirements and administrative obligations for a housing development, including rent caps, income limits, monitoring, and marketing.
Shared Housing Services Office (SHSO)
A Shared Housing Services Office (SHSO) is an office shared between multiple municipalities that assists with the functions of affordable housing, including proactive monitoring, program administration, project development and resident assistance. Learn more about RHSO.
Subsidized Housing Inventory (SHI)
The Subsidized Housing Inventory (SHI) is used to measure a community’s stock of low-or moderate-income housing for the purposes of M.G.L. Chapter 40B, the Comprehensive Permit Law. While housing developed under Chapter 40B is eligible for inclusion on the inventory, many other types of housing also qualify to count toward a community’s affordable housing stock. It is a list of officially “affordable” housing units in a community and includes both rental and home ownership dwellings. Subsidized Housing Inventory (SHI) | Mass.gov