To keep building on our progress as we achieve our early-stage GHG emissions reduction goals, we keep a constant eye on how we are currently performing.

Archetype Modelling

To establish our initial goals, we began with a set of model archetype homes, developed through consultations with internal stakeholders and building science experts, to represent our various low-rise divisions – specifically, detached single-family homes and attached townhomes. To create data sets for both GHG emissions and energy consumption, we assessed these archetypes using energy modelling and embodied carbon calculators.

In FY2025, our low-rise divisions in Canada completed an update on all the archetypes they use for modelling, incorporating newer home designs, expanded energy-efficiency targets and mechanical options that have enabled more refined and accurate carbon accounting.

Moving forward, we will continue pursuing opportunities to base performance projections and evaluations on built homes, similar to the assessment approach taken with Mattamy’s urban structures, where findings are largely based on actual buildings rather than archetypes.