Where tradition meets innovation in architectural excellence

We've spent years figuring out how to honor the past while building for the future. It's not always easy, but it's what we do best.

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We're not your typical architecture firm

Look, there's something special about working with buildings that've been around longer than any of us. Heritage structures carry stories, character, and craftsmanship that you just can't replicate. But that doesn't mean they can't also be energy-efficient, comfortable, and ready for another century of use.

Based in Toronto, we've made it our mission to bridge that gap. Some folks think heritage and sustainability are at odds – we've proven they're actually perfect partners. Whether it's a century-old commercial building downtown or designing something completely new with tomorrow in mind, we approach every project like it matters. Because it does.

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What we bring to the table

Six core services that cover pretty much everything you'd need

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Heritage Building Restoration

Bringing old buildings back to life isn't just about fixing what's broken. It's about understanding what made them great in the first place and keeping that alive.

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Sustainable Residential Design

Your home should work for you and the planet. We design spaces that feel right while keeping energy bills low and environmental impact even lower.

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Commercial Architecture

Commercial spaces need to work hard – they've gotta look good, function well, and make financial sense. We've done enough of these to know what actually works.

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Urban Planning Consultation

Sometimes you need to zoom out and look at the bigger picture. We help cities and developers figure out how individual projects fit into the urban fabric.

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Green Building Certification

LEED, Passive House, or just trying to do better – we'll guide you through the certification process and make sure your building actually performs like it should.

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Interior Space Design

The shell is just the beginning. We think about how people actually move through and use spaces, then design interiors that make daily life better.

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Recent projects we're proud of

Each one taught us something new and pushed us to think differently

Heritage restoration project

Queen West Heritage Revival

Transformed a 1920s warehouse into modern retail while preserving original brick and timber

Sustainable home design

Rosedale Passive House

Net-zero energy home that fits right into the neighborhood

Commercial architecture project

Distillery District Office

Contemporary workspace respecting historic context

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Sustainability isn't optional anymore

We've been doing this long enough to see the climate conversation shift from "nice to have" to "absolutely necessary." And honestly? That's a good thing.

Every project we take on now has sustainability baked in from day one. Not because it's trendy, but because buildings account for nearly 40% of global emissions. If we're gonna design something that'll be around for decades or centuries, we better make sure it's not making things worse.

Heritage buildings already have a head start – keeping them standing is inherently sustainable. But we take it further with energy retrofits, renewable systems, and materials that actually make sense for the long haul.

Our Sustainability Approach

By the numbers

78% Average energy reduction in our retrofit projects
23 Heritage buildings we've helped save from demolition
12 LEED certified projects completed
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Got a project in mind?

Whether it's a heritage building that needs some love or you're starting from scratch with sustainability goals, let's talk about what's possible.

We do free initial consultations – no pressure, just a conversation about your vision and how we might help bring it to life.

Get In Touch

Call us: (416) 555-0147

Email: info@gildarethvenquinth.info