green circle with white arrowsGRRP Comprehensive

The Green and Resilient Retrofit Program (“GRRP”) Comprehensive cohort is designed for properties with high efficiency and resilience needs. Properties receiving GRRP Comprehensive grants or loans will be comprehensively assessed to evaluate which energy and climate resilience investments are best suited to the property. To learn more view the webinar below which provides an overview.

GRRP Overview: Comprehensive (Video, 12 mins)

We hosted a live webinar on the full scope of GRRP.
View the video on HUD's YouTube Channel here. The slide presentation is also available here.

To learn more about program requirements 

Ask us your questions directly during our GRRP Office hours!

Join us Wednesdays from 3:00-3:30 PM EST (no registration necessary):
Office Hours recordings are now available on HUD's YouTube channel:
May 24May 31June 7June 14June 21June 28July 12July 19July 26August 2August 9, August 16, August 23



For more information on GRRP view the brochure here



Applicant Tools & Resources*


NEW! September 18, 2023. The GRRP applications have been updated with the changes listed below. The updated Comprehensive application is now available.

All Applications

  1. Updated the “program assisted under” dropdown to present a more streamlined set of choices (Section 8 PBRA, Section 202, Section 811, Section 236, Other)
  2. Fixed an issue where applicants who entered a Zip Code with a leading zero received an error message and were unable to input their Zip code.
  3. Changed the size of the tooltip on the Census Tract look up, so applicants can see the full tool tip and access the link to the site to look up the correct Zip Code.
  4. Fixed an issue where Census Tracts with a leading zero were unable to be entered.
  5. Fixed leading zero errors in iREMs and Assistance Contract # cells (we have not received reports of errors for these yet, this change is proactive).


  • Grants.govAdditional application materials are posted and must be submitted through
  • All applicants for the Comprehensive NOFO must either submit Benchmarking Data through EPA's Portfolio Manager or the Multifamily Building Efficiency Screening Tool (MBEST). 
    • Benchmarking Resources Owners using Portfolio Manager benchmarking may use the posted resources, including instructions for inputting and sharing data, a sample tenant release for owners that cannot access whole-building data, and template RFPs for hiring a benchmarking contractor.
    • The Multifamily Building Efficiency Screening Tool (MBEST). Owners can apply for the Comprehensive NOFO through the MBEST set-aside (up tp 40% of funding put out through the NOFO) instead of submitting benchmarking data in Portfolio Manager. This tool was created in partnership with the U.S. Department of Energy and the Lawrence Berkeley National Laboratory to screen multifamily buildings and understand current opportunities for energy efficiency improvements. View the overview video here.


Applicants, to learn more about the Comprehensive scoring process, view the pre-recorded webinar below. 

GRRP Comprehensive Scoring Process (Video, 8 mins)



Learn more about GRRP Cohorts



*GRRP Comprehensive application tools are part of the Paperwork Reduction Act (PRA) collection under OMB control number 2502-0624. Public reporting burden for this collection of information is estimated to average 45 minutes per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Comments regarding the accuracy of this burden estimate and any suggestions for reducing this burden can be sent to the Reports Management Officer, REE, Department of Housing and Urban Development, 451 7th St SW, Room 4176, Washington, DC 20410-5000.  When providing comments, please refer to OMB Approval No. 2502-0624. This information is required to obtain benefits. HUD may not collect this information, and you are not required to complete this form, unless it displays a currently valid OMB control number. This information is being collected under Title III of the Inflation Reduction Act of 2022, H.R. 5376 (IRA), section 30002 titled “Improving Energy Efficiency or Water Efficiency or Climate Resilience of Affordable Housing,” authorizes the Green and Resilient Retrofit Program (GRRP). The program provides grants or loans for building retrofits to HUD-assisted multifamily projects with utility efficiency or climate resilience needs. This information collection is used to determine eligibility of HUD-assisted multifamily properties for participation in the GRRP Comprehensive program and the terms on which participation should occur. The purpose of the program is to fund projects that improve energy or water efficiency, enhance indoor air quality or sustainability, implement the use of zero-emission electricity generation, low-emission building materials or processes, energy storage, or building electrification strategies, or address climate resilience, of an eligible property. While no assurances of confidentiality are pledged to respondents, HUD generally discloses this data only in response to a Freedom of Information Act request.