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Core-Development is a term coined by the Department to define the fundamental (core) elements of housing development undertaken by project owners and their development teams when planning, creating, modifying, rehabilitating, and maintaining affordable housing. Core-Development consists principally of the following development and post-development stewardship-focused activities:

  • Planning & Community Development
  • Site Selection and Due-Diligence
  • Design and Construction Team Considerations
  • OHCS Design and Construction Standards
  • Development Progress and Documentation Requirements
  • Post-Development Portfolio Management Requirements (specifically, requirements associated with routine monitoring of the physical health of portfolio properties)

The activities listed above distinguish Core-Development from the other principal functions of the Department that are more focused on program development and administration, resource allocation, and regulatory compliance.

Core-Development is administered via the Core-Development Manual (CDM) and via a series of Core-Development Memoranda.

The CDM and Core-Development Memoranda apply to a given project only when these guides are specifically referenced as a required resource in official Department Communications, such as but not limited to a NOFA, or when Department staff refer a party to these resources for guidance.


 CDM Version 3.1 (PDF)

Effective January 1, 2020
Applies to NOFA applications received on or after January 1, 2020.


Portfolio Administration​:

 8.2 Covered Activity Notifica​tion

 Project Closeout Forms (ZIP File)

 CDD Application Checklist

 DSO-New Construction


 A-GC Sustainability

Project teams may use the most current CDM forms in these folders or they may use the forms that are included in the Version of the CDM/PDM that is applicable to their project. Where forms are not available in these folders, the form from the applicable CDM/PDM should be used. ​

Portfolio Administration​:

 PDM Version 2016-06-01

Effective October 1, 2016 

Applies to NOFA applications received on or after October 1, 2016 through December 31, 2017.

 PDM Version 2017.12.01

Effective January 1, 2018

Applies to NOFA applications received on or after January 1, 2018 through December 31, 2018.

 PDM Update 2018-R1 

Effective January 1, 2019
Applies to NOFA applications received on or after January 1, 2019 through December 31, 2019.

Questions and comments:
Kevin Burgee, Department Architect

Website Questions:

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