PROJECT.

Habitat Homes on Elm

A proof-of-concept green historic retrofit


We set out to prove that historic homes could be sustainable—and affordable—through Cincinnati Habitat for Humanity’s first LEED-certified historic renovation.

Problem


LEED certification is often seen as cost prohibitive for affordable housing developers like Habitat for Humanity—and green historic retrofits are often deemed even further out-of-reach. But we knew that this type of development had numerous benefits for lower-income households and communities. We set out to show that a green historic retrofit could be sustainable and affordable.

The result was a new model of affordable housing development for Cincinnati’s historic Over-the-Rhine (OTR) neighborhood.

Solution


Convene all stakeholders.

Sol brought together Cincinnati Habitat for Humanity, the Over-the-Rhine Foundation, and Over-the-Rhine Community Housing to create their first LEED-certified historic renovation. Building upon OTR Foundation’s earlier Green Historic Study, we identified economically feasible ways to do LEED certification in a historic district.

Quantify the benefits of renovation.

Sol conducted Life Cycle Assessment and energy analysis to evaluate the resource conservation benefits of historic renovation versus Habitat for Humanity’s typical new construction. This long-term, total carbon footprint view demonstrated that overall carbon reductions can be readily (and affordably) achieved via retrofits.

Leverage the natural benefits of a historic retrofit.

During design, we identified a cost-effective path toward LEED certification. The homes incorporate new insulation, efficient mechanical systems, and water-efficient fixtures—as well as benefitting from the homes’ natural thermal mass, daylight, and proximity to amenities and public transit.

The Impact


LEED Homes Certified


43%
reduction in energy use

110 MJ
embodied energy avoided

10K
tons embodied carbon avoided

23%
reduction in water use

"Does greater ecological responsibility require de-prioritizing historic preservation? Many people assume that it does, that environmental preservation and historic preservation are at odds: energy efficiency versus old, drafty buildings. … To the contrary, respecting our history and respecting our environment are related and consistent values. Our built history contains many of the keys and basic building blocks for 'going green.'"