Are We Designing Buildings for the Climate We Have, or the Climate We're Going to Have?

We design buildings to last 50, 75, even 100 years.

That's one of the things I love about construction. We're not just building for today. We're creating places that will be part of a community for generations.

But here's something I've been thinking about.

Are we designing those buildings for the climate they'll experience over their lifetime, or the climate we've grown accustomed to?

A building completed in 2026 could still be occupied in 2100.

That's a long time to assume that yesterday's weather data will tell us everything we need to know about tomorrow.

Yesterday's Weather Is No Longer the Whole Story

For decades, building design has relied on historical weather records, established climate zones, and code requirements.

That approach has served us well. But climate conditions aren't standing still.

Many regions are experiencing more frequent or intense heat extremes. Some face heavier downpours. Others are dealing with prolonged drought, wildfire exposure, coastal flooding, or combinations of these risks.

The specifics vary enormously by location. A building in Phoenix doesn't face the same challenges as one in Miami, Seattle, or Madrid.

That's why resilience isn't a one-size-fits-all checklist.

It's about understanding the conditions a building is likely to encounter during its useful life—and making thoughtful decisions before those conditions become emergencies.

We Have Become Very Good at Designing for Efficiency

The construction industry has made tremendous progress in energy efficiency.

Better insulation.

High-performance glazing.

More efficient mechanical systems.

Smarter controls.

Improved building envelopes.

And increasingly, lower-carbon construction materials.

Those are all important developments.

But energy efficiency and climate resilience aren't quite the same thing.

An efficient building may use very little energy under normal conditions, yet become dangerously hot during a prolonged power outage.

A beautifully designed ground-floor lobby may look fantastic until the first major flood sends water through the entrance.

And a roof designed to meet today's minimum requirements may face very different rainfall or temperature conditions decades from now.

We need to think about how buildings perform not only on an average day, but also on the days when everything goes wrong.

Because Mother Nature has never been particularly impressed by a value-engineering exercise.

Heat Is Becoming a Design Question, Not Just an HVAC Question

As temperatures rise, the instinctive response is often to install more cooling capacity.

Sometimes that's necessary.

But before we ask a mechanical system to solve the entire problem, we should look at what the building itself can do.

Exterior shading can reduce solar heat gain.

Thoughtful orientation and glazing selection can limit unwanted afternoon sun.

High-performance envelopes can slow heat transfer.

Green roofs and trees can help reduce surface temperatures and provide shade.

Cool roofs and other reflective surfaces may reduce heat absorption where conditions make them appropriate.

And natural ventilation can improve comfort in climates where outdoor air quality, humidity, and temperature allow it.

None of these measures is a magic bullet.

But together, they can reduce the burden placed on mechanical equipment and improve the building's ability to remain habitable when that equipment isn't available.

That's an important distinction.

A resilient building shouldn't immediately become unlivable when the power goes out.

Water Doesn't Care Where We Drew the Property Line

Extreme rainfall is another challenge that deserves more attention.

We often design drainage systems around historical storm events and established design standards.

But a building's ability to handle water depends on more than the size of its roof drains.

Where does the runoff go?

Can the surrounding landscape absorb or temporarily store it?

Are critical electrical and mechanical systems located in areas vulnerable to flooding?

Can entrances, loading docks, basements, and parking structures resist water intrusion?

Could a failure somewhere outside the property boundary affect the building?

Resilience requires looking beyond the building itself.

Permeable paving, rain gardens, detention systems, green infrastructure, and thoughtful site grading can all play a role.

Sometimes the smartest building improvement isn't inside the building at all.

It's what happens to the water before it reaches the front door.

The Building Envelope Is Our First Line of Defense

We tend to talk about building envelopes in terms of appearance, insulation values, and energy performance.

But the envelope is also the first line of defense against wind, rain, heat, moisture, and other environmental stresses.

Material selection matters.

Connection details matter.

Drainage planes matter.

Roofing systems matter.

And maintenance matters.

A product that performs beautifully when it's first installed still needs to work after decades of sun exposure, thermal movement, and repeated weather events.

That's why durability and repairability should be part of the resilience conversation.

Sometimes the most sustainable building component is the one that doesn't need to be replaced prematurely.

And sometimes the smartest detail is one that makes inspection and repair easier.

Not every innovation needs to come with a patent and a marketing video.

Resilience Is Also About People

There's a tendency in construction to measure performance through materials, equipment, and systems.

But buildings exist for people.

During an extreme heat event, can occupants remain safe?

During a power outage, is there daylight, ventilation, or a designated area that can maintain acceptable conditions?

Can essential services continue operating?

Can vulnerable occupants evacuate safely?

How quickly can a building return to use after a disruption?

These questions become especially important for hospitals, schools, senior housing, multifamily residential buildings, and other facilities where people depend on the building for more than convenience.

A building that survives a storm but can't be occupied for months may have met one definition of performance while failing another.

Real resilience considers both the structure and the people who rely on it.

What About the Cost?

This is usually where the conversation gets interesting.

Owners and developers have budgets. Contractors have schedules. Architects and engineers have competing requirements.

And nobody has an unlimited supply of money.

The challenge is that resilience investments often have an upfront cost, while their benefits may not become obvious for years.

That's a difficult calculation when a project is being evaluated primarily on its initial construction budget.

But perhaps we should be asking a different question.

What is the total cost of owning and operating this building over the next 50 years?

That includes energy consumption, maintenance, insurance exposure, business interruption, repairs, and the possibility of costly retrofits.

Not every resilience measure will make financial sense for every project.

But neither does it make sense to dismiss a measure simply because its value won't appear in the first year's operating statement.

The cheapest building to construct isn't necessarily the least expensive building to own.

Anyone who's spent time in construction has seen that lesson play out more than once.

Designing for the Future Doesn't Mean Predicting It Perfectly

Nobody can tell us exactly what the weather will look like at a particular building in 2075.

Climate projections contain uncertainty, and local conditions matter.

But uncertainty isn't a good reason to ignore risk.

We already design buildings for events that may never occur during their service life.

We account for earthquakes, wind loads, snow loads, fire, and other hazards.

We don't know exactly when those events will happen.

We prepare because the consequences of being unprepared can be enormous.

Climate resilience deserves a similar mindset.

Use the best available local projections.

Evaluate multiple plausible scenarios.

Consider how critical systems could be adapted or upgraded.

Build in flexibility where it's practical.

And revisit assumptions as science, codes, and technology evolve.

The goal isn't to predict the future perfectly.

It's to avoid designing a building that has no room to respond when the future arrives.

A Thought

I've spent my career watching our industry solve some incredibly difficult problems.

We build taller, span farther, use less energy, and create structures that would have seemed impossible a generation ago.

So I don't believe designing for a changing climate is beyond our capabilities.

I think the bigger challenge may be changing the timeframe of the conversation.

We make many construction decisions based on what a building needs to cost today.

But the people who use that building 30 or 50 years from now will live with the consequences of those decisions.

They won't care whether we saved a little money on a roof detail in 2026.

They'll care whether the roof works.

They won't care whether a mechanical system met the minimum requirement when the building opened.

They'll care whether the building remains comfortable and safe.

And they won't care whether we considered resilience an optional upgrade.

They'll simply expect the building to perform.

Maybe it's time we started designing with those future occupants in mind.

After all, if we're going to build something intended to last a century, we should probably give some thought to what that century might look like.

Here's my question:

Should future climate conditions become a standard part of building design and lifecycle cost analysis, rather than something we consider only on projects with an unusually forward-thinking owner?