Build-to-Suit Demand in GTA: Key Drivers

The industrial real estate market in the Greater Toronto Area (GTA) is shifting. With speculative developments slowing and vacancy rates at just 1.1%, businesses are turning to build-to-suit (BTS) properties for custom solutions. Here’s why:

• Custom Design: BTS properties are tailored to fit specific tenant needs, such as reinforced flooring, temperature control, or advanced automation systems.
• Vacancy Risk: Developers secure tenants before construction begins, eliminating the risk of empty spaces.
• Lease Terms: BTS leases are typically long-term (10–20 years), ensuring stability for both tenants and landlords.
• Higher Rents, Lower Costs: While BTS rents range from C$15 to C$25 per sq. ft., custom energy and operational efficiencies often offset these costs over time.
• Faster Occupancy: BTS projects can be ready in 8–12 months, avoiding delays tied to retrofitting speculative spaces.

In contrast, speculative properties offer immediate availability but lack customization, making them better suited for businesses with general needs. With lease rates ranging from C$8 to C$28 per sq. ft., they provide flexibility but come with vacancy risks and potential retrofitting costs.

Quick Comparison

Feature	Build-to-Suit (BTS)	Speculative Properties
Customisation	High	Low
Vacancy Risk	Low	Moderate
Lease Rates	C$15–$25/sq. ft.	C$8–$28/sq. ft.
Lease Terms	10–20 years	5–10 years
Setup Timeline	8–12 months	Immediate (may need retrofitting)

For businesses in the GTA, choosing between BTS and speculative properties depends on priorities like customization, speed, and long-term commitments.

1. Build-to-Suit Industrial Properties

A build-to-suit (BTS) industrial property is tailored specifically for a single tenant, designed to align perfectly with how their business operates - and all of this happens before construction even begins.

Customisation

The biggest draw of BTS properties? They eliminate what’s often called the "spec space compromise." In speculative buildings, tenants are stuck with pre-determined features like column spacing, clear heights, and floor load ratings - choices made by the developer, not the tenant. For businesses with unique requirements, such as cold chain logistics, heavy manufacturing, or advanced automation, working around these limitations can be costly or downright impossible.

With BTS, facilities are designed to meet specific needs right from the start. Think reinforced flooring (200+ lbs. per sq. ft.), specialised vapour barriers, temperature-controlled zones, or high-capacity electrical systems. As Becknell Industrial aptly explains:

"When your operations depend on getting the building right, close enough is never good enough."

This custom approach not only ensures operations run smoothly but also reduces market risks for developers.

Vacancy Risk

From a developer’s perspective, BTS projects come with a major advantage: no vacancy risk. With a tenant secured before construction even begins, there’s no uncertainty about filling the space. This is especially critical in high-cost areas like the GTA, where speculative development has slowed due to expensive land and fluctuating prices. By focusing on design-build projects for confirmed tenants, developers can bypass these challenges entirely.

Lease Rates

BTS properties in the GTA typically command net rents of C$15 to C$25 per sq. ft., depending on the location and specific requirements. While this range might exceed the GTA’s average of C$16.56 per sq. ft., the overall cost over the lease term often balances out. Why? Because the building’s mechanical and energy systems are tailored to the tenant’s exact operations, resulting in lower overhead costs compared to retrofitted speculative spaces.

Tenant Retention

BTS leases are usually long-term, spanning 10, 15, or even 20 years. This isn’t just a landlord preference - it’s practical. Once a facility is customised to a tenant’s workflow, moving elsewhere becomes both disruptive and expensive. This naturally encourages tenants to stay put, reducing the need for heavy negotiations to keep them.

Occupancy Timelines

While speculative buildings offer immediate occupancy, they often require modifications to meet specific tenant needs, causing delays. A well-executed BTS project, on the other hand, can deliver occupancy within 8–12 months of breaking ground. When you consider the time saved by avoiding retrofits, this timeline becomes highly competitive.

sbb-itb-1862e65

2. Speculative Industrial Properties

Speculative industrial properties, often called "spec" buildings, differ from build-to-suit (BTS) projects in a key way: they’re built before securing tenants. Developers design these properties based on anticipated market demand, aiming to lease them out after construction. They’re particularly useful for businesses with straightforward warehousing or distribution needs, providing a contrast to the highly customised approach of BTS projects.

Customisation

Spec buildings follow a standardised design, featuring elements like consistent column spacing, typical clear heights, and conventional floor load ratings. While this works well for many, businesses with specialised needs - like heavy power requirements, advanced automation systems, or temperature-controlled environments - often find these spaces lacking. Modifying a spec property to meet such needs can be both costly and time-consuming.

"A tenant retrofitting a spec building is working within someone else's design constraints." - Becknell Industrial

Vacancy Risk

One of the biggest challenges with spec developments is the risk of vacancy. Unlike BTS projects, where a tenant is already secured, spec buildings are a gamble: developers invest heavily upfront, hoping to find tenants later. This risk is especially pronounced in the Greater Toronto Area (GTA), where high land costs make speculative projects a significant financial commitment. Reflecting this, the share of speculative completions in the GTA dropped from 87.4% of total industrial deliveries to 71% in Q1 2025, as developers became more cautious about building without pre-leased commitments.

Lease Rates

Lease rates for spec properties vary widely depending on location:

• Urban Toronto submarkets (e.g., Etobicoke): C$18–$28 per sq. ft. net
• Suburban areas (e.g., Mississauga, Brampton, Vaughan): C$14–$22 per sq. ft. net
• Outer GTA markets (e.g., Durham Region): C$8–$15 per sq. ft. net

In addition to base rent, tenants typically pay C$3–$8 per sq. ft. annually for operating costs like property taxes, insurance, and maintenance under a triple-net lease structure. This cost variability, combined with the immediate availability of spec properties, often appeals to businesses needing a quick move-in solution.

Setup Timelines

The primary advantage of spec properties is speed. Spaces are move-in ready, which is ideal for businesses needing to act fast. However, if the standardised design doesn’t meet a tenant’s specific requirements, the time needed for permitting and modifications can erode this advantage.

Speculative properties strike a balance: they offer quick occupancy but may require tenants to adapt to a pre-designed space. For businesses, the decision often comes down to weighing immediate availability against the potential need for adjustments to fit operational demands.

Pros and Cons

With industrial real estate in the GTA becoming increasingly scarce, selecting the right property model is a critical decision. Each option comes with its own set of trade-offs, and the best choice depends on factors like a business's need for flexibility, speed, and specific operational requirements. Here's a breakdown of the advantages and limitations of the two primary property models: build-to-suit and speculative properties.

Build-to-suit properties cater to tenants with long-term, specialized needs. These facilities are custom-designed to meet precise operational demands - from floor load ratings to power capacity, loading configurations, and clear heights. Developers typically handle the costs of construction and land acquisition, allowing tenants to focus their capital on core business activities. However, this model comes with some challenges. Tenants are usually required to commit to leases lasting 10 to 20 years, and the setup process can take 12 to 24 months, making it less ideal for businesses needing immediate space. Another potential drawback is the risk for developers if the tenant decides not to renew the lease. Repurposing a highly specialized facility can be both expensive and complicated.

"If a tenant opts not to renew after 15 years, the developer may be left with a highly specialized facility (e.g., a cold storage unit with unique plumbing) that is difficult or expensive to retrofit for a new tenant." - David Wiegratz, Modern CRE

Speculative properties, on the other hand, are designed for flexibility and speed. These spaces are built with more general use in mind, making them easier to lease and re-lease. Tenants benefit from shorter lease terms - typically 5 to 10 years in the GTA - which allows for greater adaptability as business needs change. While speculative properties are less tailored to specific requirements, their standardized design reduces long-term risks for developers.

The table below provides a clear comparison of the two models, highlighting the key criteria GTA industrial tenants should consider:

Criterion	Build-to-Suit (BTS)	Speculative (Spec)
Customisation	High; tailored to exact operational needs	Low; designed for general market use
Vacancy Risk	Low; pre-leased before construction	Moderate; depends on market absorption
Lease Rates	Higher (C$15–$25/sq. ft. net in GTA)	Market-driven (C$8–$28/sq. ft. net)
Tenant Retention	High; 10–20 year commitments	Moderate; 5–10 year terms
Setup Timeline	12–24 months	30–120 days
Flexibility	Low; rigid, long-term commitment	Higher; easier to relocate or sublease
Credit Requirement	Near-flawless credit required	Standard commercial credit

This comparison highlights the critical factors businesses must weigh when choosing between these two property types, based on their operational priorities and long-term goals.

Conclusion

The industrial market in the Greater Toronto Area is experiencing a noticeable transformation. With construction pipelines shrinking and build-to-suit (BTS) projects gaining a larger share, the opportunity to secure purpose-built industrial spaces is becoming increasingly limited. As speculative developments slow and older facilities struggle to meet the demands of modern logistics and e-commerce, BTS projects are stepping in to meet the needs of businesses looking for tailored solutions.

For tenants, BTS offers a chance to secure Class A spaces designed specifically for their operational needs - an important advantage as availability tightens. This shift aligns with expert forecasts:

"But if we do see some sort of agreement on trade and trade stability, I think businesses will know what the environment's going to be like, and they can dust off those expansion plans, and we could see economic activity and growth increase toward the end of 2026." - Keith Reading, Senior Director, Research, Morguard

However, BTS transactions require long-term planning and detailed customisation. This is where Michael Law of Lennard Commercial - Industrial Real Estate Services comes in. With extensive market expertise and proprietary data, he ensures that clients navigate this complex process effectively.

When it comes to industrial real estate, the choice is straightforward: speculative properties provide speed and adaptability, while build-to-suit projects offer precision and a tailored fit that can enhance both operational efficiency and financial performance. Partnering with an expert is key to making the right decision.

FAQs

Is build-to-suit worth it if my space needs might change?

Build-to-suit spaces are perfect for businesses with precise operational needs. These spaces can include tailored features like specific dock layouts or temperature-controlled environments. But here's the catch: if your business requirements shift over time, these spaces can be challenging to adapt. Construction takes longer, and making changes later on can be expensive.

On the other hand, speculative spaces offer quicker move-in times and greater flexibility. They’re designed to accommodate a range of uses, making them a better fit if your needs might change down the line.

Ultimately, it comes down to what matters most to you: customization and operational efficiency or flexibility to adapt as your business grows.

What costs should I budget for beyond net rent in a GTA industrial lease?

When considering net rent, don’t forget to budget for operating expenses, property taxes, insurance, and maintenance fees. These extra costs can add up quickly and have a big impact on your total expenses. Make sure to factor them in when reviewing a lease to avoid surprises later.

What should I do first to start a build-to-suit project in the GTA?

When kicking off a build-to-suit project in the Greater Toronto Area, the first step is to pinpoint your business's exact operational needs. Think about specifics like dock configurations, power capacity, and any required automation features. Once you've outlined these details, share them with an experienced developer or landlord.

By collaborating closely during the design phase, you can ensure the facility is customized to meet your needs. This approach lays the groundwork for a project that aligns perfectly with your operations.