In-Law and Granny Suites in Hamilton
Oak & Pine Contracting is a Hamilton general contractor specialising in in-law suites, granny suite builds, garage conversions to living space, and basement suite renovations.
Oak & Pine Contracting serves homeowners across Hamilton and surrounding communities in south-central Ontario. All secondary suite projects are fully permitted and backed by a one-year workmanship warranty.
- Over 10 years of hands-on experience
- 1-year workmanship warranty on all projects
- 5/5 Google rating
- Fully insured
Over 10 years of hands-on experience
What Goes Into Building a Granny Suite in Hamilton
A granny suite isn't one trade — it's all of them. Structural framing, insulation, drywall, flooring, cabinetry, trim, doors, and windows are all carpentry scope and at the core of what we do. Beyond that, we bring in licensed plumbers for the kitchen and bathroom rough-in, and licensed electricians for panel work, circuits, and fixtures. If the project involves HVAC, we coordinate that too.
- Structural framing, insulation, and drywall
- Flooring, cabinetry, and trim
- Kitchen and bathroom plumbing rough-in
- Licensed electrical and panel work
- Separate entrance and egress
Most contractors hand parts of this off or expect you to manage the trades yourself. We don't work that way. One point of contact, one team accountable for all of it, from the first wall framed to the last coat of paint.
Three Ways to Build an In-Law Suite in Hamilton
Garage conversion
One of the most practical approaches for Hamilton homes that already have an attached or detached garage. We insulate and frame the interior, run plumbing and electrical, install flooring and drywall, and finish the space to full living standard. The garage door opening typically becomes a wall with a window, or a new entrance.
Basement suite
Converting an unfinished or underused basement into a self-contained suite. Requires its own entrance, egress windows for bedrooms, and full plumbing and electrical rough-in. A basement suite is often the most cost-effective path to a separate living space without touching the footprint of the house.
Addition
When the existing square footage doesn't work, building new is the answer. A granny suite addition is built onto the existing structure with its own entrance, full kitchen, and bathroom. More involved than a conversion, but gives you complete control over the layout and finishes.
Talk Through Your Options
How We Approach a Hamilton Granny Suite Build
Every granny suite starts with a site visit. We look at the existing space, talk through what you're trying to accomplish, and give you honest feedback on which approach makes the most sense for your property and your budget. No commitment, no pressure — just a real conversation about what's realistic.
From there, we handle permits, coordinate all the trades, and manage the build from start to finish. Hamilton's permitting process for secondary suites has specific requirements and we know them well. We'll walk you through what's needed and make sure everything is done above board so the suite adds value to your property, not liability.
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Granny Suites & ADUs Across Hamilton
Oak & Pine Contracting builds in-law and granny suites for homeowners throughout Hamilton — including Ancaster, Waterdown, Dundas, Stoney Creek, Binbrook, and Flamborough — and the surrounding communities of Burlington, Oakville, Brantford, Paris, Milton, and Grimsby. If you're within our service area, we'll come to you for a no-obligation site visit and estimate. See our full service area or explore our other services.
Get A Free EstimateFrequently Asked Questions About Granny Suites in Hamilton
Do granny suites require permits in Hamilton?
Yes. Any granny suite or in-law suite build requires a building permit in Hamilton, regardless of whether it's a conversion or a new addition. Electrical and plumbing work requires separate permits as well. We handle the permitting process as part of the project.
What's the difference between a granny suite and an addition?
An addition increases your home's square footage. A granny suite is about creating a self-contained living space with its own entrance, kitchen, and bathroom — which can be done through an addition or by converting existing space like a garage or basement. The two often overlap.
Can a garage be converted into a granny suite?
Yes, and it's one of the most common approaches. A garage conversion involves insulating, framing interior walls, running electrical and plumbing, installing flooring and drywall, and finishing the space to livable standard. We handle all of it.
How long does it take to build a granny suite?
A garage or basement conversion typically takes 2 to 4 months depending on scope and permit timelines. A full addition built as a granny suite takes longer. You'll get a realistic timeline at the estimate stage once we've seen the space.
Can a granny suite generate rental income in Hamilton?
Yes. A self-contained secondary suite with its own entrance, kitchen, and bathroom can be legally rented out in Hamilton provided it meets all building code and zoning requirements. We build suites to the standard required for legal occupancy — permits pulled, all work inspected and approved.
Our Clients Say It Better Than We Can
Thrilled with Oak & Pine's kitchen renovation! Thanks, Brock, for your professionalism and expertise. Sold my house above asking—undeniably satisfied!
