Ottawa’s New Development Rules

Written By Alexandra .

How to Build Multi-Unit Properties with CMHC Financing?

Ottawa is entering a new phase of growth, and for builders, investors, and homeowners, it is creating one of the most compelling opportunities we have seen in years. With the introduction of the 2026 zoning by-law, combined with powerful CMHC financing programs, it is now more feasible than ever to build duplexes, triplexes, fourplexes, and small apartment buildings across the city. If you are considering building or investing, here is what you need to know

What Changed in Ottawa’s 2026 Zoning By-law?

Ottawa’s new zoning framework was designed to increase housing supply and simplify the development process. The key changes include:

  • More residential zones now allow multi-unit buildings

  • Increased support for “missing middle” housing such as duplexes and fourplexes

  • Reduced parking requirements, lowering construction costs

  • Greater flexibility in building form and density

  • Intensification encouraged near transit and urban corridors

What does this mean for property owners?

For property owners, this means you may now be able to add additional units or build more density on land that was previously limited. You may be able to add secondary or third units to an existing home, convert a single-family property into a triplex or fourplex, or build a low-rise multi-unit on an infill lot. This shift is unlocking new density in neighbourhoods that were previously restricted, including established areas like Westboro, Wellington West, and the Glebe, along with family-oriented communities such as Alta Vista and Glabar Park. High-demand infill neighbourhoods like McKellar Park and Hintonburg are also seeing increased multi-unit development, particularly in proximity to key transit corridors such as Tunney’s Pasture and Bayview.

Why Multi-Unit Development in Ottawa Is a Smart Investment

Ottawa continues to face strong rental demand, population growth, and limited housing supply.

Multi-unit development allows you to:

  • generate multiple income streams from one property,

  • increase land value through intensification,

  • and build long-term equity with purpose-built rentals.

With the right approach, these projects can significantly outperform traditional single-family investments.

How CMHC Financing Makes Multi-Unit Projects Feasible

CMHC (Canada Mortgage and Housing Corporation) offers financing programs designed to support rental housing development, and they are one of the biggest advantages available to Canadian investors today. These programs allow you to access higher leverage, longer amortizations, and lower borrowing costs compared to traditional financing.

Key benefits include:

  • Up to 85 percent loan-to-value

  • Amortizations up to 40 years

  • Lower interest rates than conventional financing

  • Improved project cash flow

This allows you to build with less capital while maintaining stronger long-term returns.

CMHC MLI Select Program Explained

The CMHC MLI Select program provides enhanced incentives for projects that prioritize:

  • affordability

  • energy efficiency

  • and accessibility

Projects that meet these criteria can qualify for:

  • improved financing terms

  • including higher leverage

  • better overall loan conditions.

For Ottawa developers, this aligns closely with both zoning direction and long-term market demand.

What You Can Build in Ottawa Right Now

Depending on your lot, location, and zoning, you may now be able to build

  • duplexes

  • triplexes

  • fourplexes

  • small apartment buildings

  • infill developments near transit.

This type of housing is often referred to as “missing middle,” and it is a major focus of Ottawa’s growth strategy.

Combining Zoning + CMHC = Maximum Opportunity

Zoning changes unlock what you are allowed to build, while CMHC financing makes those projects financially viable. Together, they create the ability to turn underutilized land into high-performing rental assets.

For homeowners, this may mean unlocking additional income by adding units to your property.

For investors, it creates an opportunity to scale more efficiently with multi-unit rental properties.

For developers, it allows for smarter infill projects that maximize both land use and long-term returns.

A successful multi-unit project starts with the right foundation. This includes zoning and feasibility analysis, thoughtful design, construction cost planning, and a clear financing strategy. Understanding how these pieces work together is what separates an average project from a highly successful one.

At Centennial Construction Management, we specialize in multi-unit residential construction, Ottawa infill development, and CMHC-aligned building strategies. We focus on building high-quality, design-forward rental properties that perform both financially and functionally. If you are considering a multi-unit build, we can help you understand what is possible on your property and guide you from concept to completion.

Start Your Multi-Unit Project
Alexandra .