ADUs & Garage Conversions

Your Property.
More Value.
More Options.

Accessory dwelling units, garage conversions, and detached suites built to code and designed to generate income or house family. Eastern Ontario’s experienced ADU builder.

What We Build

Income suites, in-law units, and detached cottages, permitted and built properly.

Ontario’s housing policy has shifted significantly in favour of secondary units on residential lots. What used to require variances and committee hearings is now largely as-of-right zoning in most municipalities. If you have a garage, a large basement, or room on your lot, there’s a real opportunity here. We’ve built over 60 of these units across Northumberland County. We know the process, the permit requirements, and how to build a unit that actually generates income and holds its value.

The Process

From feasibility to finished unit

Why Cobourg Construction

We’ve built over 60 ADUs. We know what renters want and what municipalities require.

There’s a real difference between a secondary unit that passes inspection and one that commands top-of-market rent. The layout matters. The finishes matter. The soundproofing matters. We build units that are easy to rent and hold their value long-term.

And because we handle permits in-house, you’re protected. An illegal unit is a liability. A properly permitted ADU is a long-term asset that adds to your property value and qualifies for rental income programs.