Compiling national outdoor air pollution data from across the government and other expert sources, this report shows the extent of the harm caused to people and the environment from fossil fuel burning equipment in homes and buildings, the disproportionate impact this pollution has on environmental justice communities and other vulnerable demographic groups, and how the use of methane gas in buildings is connected to the broader system of methane gas extraction and distribution.

This report looks at the existing research on climate and housing in the U.S, in two key areas: how housing decarbonization and production strategies can reduce pollution to mitigate climate change, and how climate change impacts renters, homeowners, and the broader housing industry. The paper also identifies key research gaps where more evidence would help policymakers to navigate the tensions between different policy approaches.

WE ACT's Out of Gas, In with Justice pilot studied the feasibility and benefits of electrification in New York City Housing Authority (NYCHA) by comparing improvements to air quality and participant satisfaction between 10 apartments with induction stoves and 10 with their existing gas stoves. It is the first study of its kind to focus on the effects of residential cooking electrification with tenants in-place in an urban public housing setting with low-income residents and residents of color. This pilot offers lessons for policymakers, public housing agencies, and affordable housing providers on cooking electrification and its impact on indoor air quality, social acceptance of electrification measures, and infrastructure challenges for existing housing in environmental justice communities.

Multifamily housing accounts for 20% of greenhouse gases. That makes taking advantage of unprecedented incentives and funding via the Inflation Reduction Act critical. This blog post previews new tools from Stewards of Affordable Housing for the Future (SAHF) and Cadence OneFive to help the affordable housing sector unlock the potential of this landmark investment in affordable housing and energy efficiency.

This article is an overview of HUD's Green and Resilient Retrofit Program (GRRP). It was developed with help from National Housing Trust (NHT) and Stewards of Affordable Housing for the Future (SAHF). GRRP, a $1B IRA program, has issued $1M in awards but the program has seen lower application volume than expected to date, leaving more resources still available for applicable projects. The article recommends that developers assess their portfolios for eligible HUD subsidized properties, so these resources are not left on the table. It also includes information on changes to make it easier for housing owners to incorporate funding into their projects.

Retrofitting buildings is a critical climate strategy, but we cannot ignore the embodied carbon impact of these retrofits. The production, transportation, and installation of materials all come with their own carbon footprints. This report provides data to support using low-carbon and carbon-storing materials in deep energy retrofits to reduce net emissions and transform buildings into climate assets. Lower embodied carbon options exist today and can be substituted for traditional materials.

Over half of California’s 3.2 million multifamily units were constructed before energy efficiency standards, resulting in poor performance and high greenhouse gas emissions. To achieve California’s greenhouse gas reduction goals, affordable multifamily housing must improve energy efficiency, reduce carbon emissions, and lower tenant utility bills while enhancing quality of life. Yet building owners face many challenges to improving the performance of their buildings. This report covers the role certain types of energy service agreements, combined with federal incentives, can play in scaling affordable multifamily retrofits.

Geothermal heat pumps offer highly efficient heating and cooling without fossil fuels. They are especially valuable in supplying heating on extremely cold days and support heating electrification with only modest impacts on electric grids. These heat pumps are widely applicable from single family homes to large properties, or even networked systems providing heating and cooling to entire neighborhoods. The blog article highlights the characteristics of this technology and new opportunities for greater adoption.

This case study showcases Allston Brighton CDC’s approach to decarbonizing multiple properties through deep energy retrofits. This nonprofit affordable housing owner in Boston has emerged as a champion of building decarbonization. They are poised to cut energy consumption by an impressive average of 55% across 103 residential units. What’s more, their team members have offered a one-page guide for similar building owners and projects on how to pursue various funding sources for retrofit success.

One of the most pressing challenges in electrifying multifamily housing is the issue of split incentives for housing providers. Although housing providers want to prioritize the health, comfort and safety of residents by transitioning to all electric buildings, they encounter many difficulties trying to finance electrification. This report describes how utility allowance methods affect a property’s operating income and residents’ energy burdens, and it examines the impact of utility allowances on affordable housing electrification.