June 8, 2023
A New View of Home Ownership
Building or buying a home is one of the largest financial decisions most people will ever make.
While purchase price and monthly payments get the most attention, far fewer homeowners consider the
Total Cost of Ownership (TCO) — the true, long-term cost of owning and operating a house.
Total Cost of Ownership is a concept well known to commercial facility managers. Applied to residential construction,
it challenges us to rethink how we design, build, and evaluate homes. One of the most eye-opening realities is that,
in North America, the purchase price represents only a fraction of a home’s lifetime cost.
The largest contributors to TCO are energy consumption, maintenance, and system replacement.
At the very top of the list sits energy use.
Consider a typical detached family home. If it aligns with the national average, it will consume roughly
110 gigajoules of energy per year. Energy prices vary widely by region. In Manitoba, Canada — where winters are cold,
summers are warm, but electricity remains relatively affordable — the average pre-tax household energy cost is about
$2,100 per year.
Over a 50-year occupancy period, that single expense exceeds $100,000 in energy costs alone.
That reality makes a compelling case for energy-efficient home design from day one.
Why Long-Term Thinking Matters
Shifting to long-term thinking goes against human nature. We are wired to focus on immediate concerns — daily routines,
short-term budgets, and near-term decisions. Yet when homebuilding decisions are made with a longer horizon in mind,
the financial, environmental, and comfort benefits can be substantial.
Early Attempts at Energy-Efficient Homes
Beginning in the early 1970s, a series of global energy crises sparked experimentation with low-energy housing.
In the southwestern United States, Earthship homes emerged, featuring massive walls and earth-sheltered designs.
Further north, straw bale houses, rammed earth, adobe, and clay-straw “eco-nests” gained attention.
While many of these approaches delivered impressive thermal performance, they required high levels of labor,
custom engineering, and specialized expertise. Their unconventional nature made lenders cautious, challenged engineers,
and often conflicted with building codes.
At the same time, a factory-built alternative began to gain market acceptance:
Structural Insulated Panels (SIPs).
Originally developed in the 1940s for industrial cold storage, SIPs consist of a rigid foam core laminated between
structural skins of plywood or OSB. Manufactured in controlled environments and thoroughly tested, SIPs overcame
many financing, engineering, and permitting hurdles faced by earlier alternative systems.
Homes built with SIPs demonstrated 30–40% energy savings, improved airtightness, and strong structural performance.
However, SIP construction introduced new challenges, including moisture sensitivity, limited drying potential,
premature roofing wear, and long-term environmental concerns related to foam insulation waste.
A Better Way: Net Zero Homes
Imagine a home that does not require an annual heating or cooling budget.
That is the promise of Net Zero energy homes.
A Net Zero home is designed with a high-performance building envelope that dramatically reduces energy demand.
The remaining energy needs are supplied by on-site renewable sources such as solar panels.
When production exceeds consumption, excess energy is exported to the grid.
When production is insufficient, energy is drawn back — ideally balancing to zero over the year.
For homeowners, this translates into lower operating costs, improved comfort, and smaller mechanical systems.
And Better Still: Passive House (PH)
Passive House design builds upon Net Zero principles with even greater rigor.
It emphasizes exceptional airtightness, higher insulation values, optimized solar gain,
and effective shading strategies.
In many climates, Passive House buildings can operate with little or no traditional heating or cooling systems.
Smaller renewable energy systems are often sufficient to power lighting and appliances,
and in some cases, Passive buildings achieve a Net Positive energy balance.
These benefits come with challenges. Passive and Net Zero buildings rely on complex, multi-layered assemblies
that carefully manage heat, air, and moisture. Success requires skilled designers, experienced builders,
and careful execution. Long lead times for high-performance windows, mechanical systems, and renewable components
remain a constraint across much of North America.
Overdue: A New Way to Build
Residential construction is currently caught between outdated methods and highly complex high-performance systems.
If Net Zero and Passive House standards are to become mainstream, a simpler, more scalable approach is needed.
At a minimum, that approach must be:
- Simple — High performance should be achieved through systems that reduce complexity and minimize error.
- Robust — Buildings must prioritize durability, resilience, and long service life.
- Precise — Tight tolerances improve performance and prevent long-term problems.
- Healthy — Material choices should support indoor air quality and occupant wellbeing.
- Affordable — Homes must be financially accessible while delivering long-term value through reduced operating costs.
Next month, we’ll introduce a modern building approach that brings all of these elements together —
leveraging local materials, modern design, and proven construction methods to redefine
energy-efficient homebuilding in Canada.
