Toronto & GTA

Exterior Construction & Outdoor Structure Builder in Toronto

When it comes to exterior construction, the difference isn't just how it looks when it's finished. It's how it performs over time.

In Toronto, outdoor structures are constantly exposed to moisture, temperature swings, and freeze-thaw cycles. If they’re not built properly from the start, they fail early.

At SZ Obsidian Builds, we focus on structural integrity first, finish second. Every project is built to last, whether it’s a simple structure or a fully custom build.

Licensed & Insured

20+ Years Experience

500+ Projects Completed

Outdoor Living

Deck Construction

A properly built deck adds usable space and long-term value to your home. A poorly built one becomes a maintenance issue within a few seasons.

We Build Decks With

Deck Services Include

Built to Last

Architecture

Curb Appeal

Porch Construction & Rebuilds

Front porches are one of the most important architectural features of a home.

We specialize in:

Whether restoring original character or building new, the goal is the same: structure, proportion, and durability.

Property Definition

Fence Construction

Fencing defines your property, but it also needs to hold up structurally.

We build fences that:

Fence Services:

Full Build

Additional Space

Detached Garage & Backyard Structures

Backyard structures should feel like a natural extension of your home, not an add-on.

We handle:

From foundation to final finish, we manage the entire build.

Craftsmanship

Exterior Carpentry Services

Exterior carpentry is where craftsmanship shows.

We work across:

Modern Builds & Restoration Work

We handle both:

Including recreating 100-year-old designs from photographs.

Protection

Envelope Protection

Siding & Exterior Cladding

Your siding protects everything underneath it.

If it fails, bigger problems follow.

We install and repair:

Built to handle Toronto’s climate from day one.

The SZ Difference

Why Homeowners Choose SZ Obsidian Builds

20+ Years Experience

Industry expertise

500+ Projects

Completed successfully

Structural First

Construction approach

One Team

Start to finish

Clear Communication

Throughout every project

3-Year Guarantee

On workmanship

Product Warranties

Based on manufacturer

We don’t build for short-term results. We build for long-term performance.

Local Expertise

Built for Toronto Conditions

Every project is built with local conditions in mind:

Freeze-thaw cycles

Moisture exposure

Soil movement

Seasonal expansion and contraction

This is what determines whether a structure lasts 5 years or 25+ years.

Get Started

Get Your Project Started

If you’re planning an exterior construction project, the most important step is to build it correctly from the start.

We’ll assess your property, explain your options, and build something that lasts.

No Obligation Quote

500+ Happy Clients

Same-Day Response