Basement & Income Suites

Built for homeowners and investors seeking safe, legal, and fully approved secondary units.

Legally compliant basement and secondary suites designed for comfort, rental income, and long-term value. Basement builder and income suite additions in Mississauga, Toronto, Oakville, Vaughan, Brampton and GTA. Safe, legal, high-quality suites built.

Basement & Income Suites

GrandBuild Homes is a trusted basement and income suite builder serving Mississauga, Brampton, Toronto, Oakville, Caledon, Vaughan, and the Greater Toronto Area. We design and build high-quality, code-compliant basement suites that add valuable living space and create reliable rental income opportunities.

We design and build bright, modern, and fully code-compliant basement and secondary suites. Whether you’re creating space for extended family or generating rental income, we manage zoning review, drawings, permits, construction, and final inspections from start to finish.

Our process ensures your suite is legal, safe, and approved, adding both functionality and long-term value to your home.

Custom Home Builds: Your home should be built once, and built right — without shortcuts, and without compromise.

Home Additions & Expansions: The best additions don’t look like additions — they look like the home was always meant to be this way.

Basement & Income Suites: A legal, well-built suite pays you back twice — in monthly income and in long-term property value.

Garden & Secondary Suites: A standalone suite adds living space, flexibility, and value — without touching the home you already love.

Insurance & Fire Restoration: In a difficult moment, you need one team that handles everything — and answers for everything.

Real Estate Investment Projects: Every dollar of scope is weighed against return — that’s how disciplined builds become profitable assets.

Capabilities

Our Services Include

Our basement and income suite service is fully turnkey, covering planning, approvals, construction, and final occupancy.

Basement Builder & Income Suite Additions in Mississauga & GTA

Our basement and income suite building services are designed to transform underutilized spaces into functional, comfortable, and legally compliant living units. Serving homeowners across Mississauga, Toronto, Oakville, Vaughan, Brampton, Caledon, and the GTA, we manage every step of the process, including design planning, permits, structural work, and complete construction. Our goal is to create safe and well-designed basement suites that meet local building codes and provide long-term value.

We focus on building suites that are both practical and inviting, ensuring proper layouts, soundproofing, insulation, and high-quality finishes. Whether you are in Richmond Hill, Markham, or established neighbourhoods like Lorne Park and Port Credit, our team delivers tailored solutions that maximize space and functionality. Each basement suite is carefully crafted to enhance your property while offering a comfortable and independent living environment.

Working Process

How We Work

Our income suite construction services help homeowners across Mississauga, Toronto, Oakville, Vaughan, Brampton, Caledon, and the GTA create additional income while increasing property value. Every suite is designed with attention to detail, ensuring safety, compliance, and long-term performance.

Solutions & Benefits

Our process is designed to eliminate risk and uncertainty when creating a legal secondary unit. We focus on early feasibility, clear scope definition, and disciplined execution—so your investment is protected and approvals are secured without delays.

Process in Action

Frequently Asked Questions

We’ve become the best at what we do by being transparent, available, and accountable. Here are the questions our clients ask most.

What makes a basement suite “legal” in Ontario?

A legal suite must meet Ontario Building Code and local zoning requirements — including ceiling heights, egress windows, fire separation, and proper permits and inspections. We manage all of it, so your suite is fully registered and code-compliant.

How much rental income can a basement suite generate?

It depends on your location, suite size, and finish level. A well-built legal suite in the GTA is a strong, reliable income source — we can walk you through realistic expectations for your neighbourhood during your consultation.

Do you handle the zoning review and permits?

Yes. We start with a zoning and feasibility review of your property, then handle architectural drawings, permit submission, construction, and final inspections — start to finish.

How long does a basement suite project take?

Most projects take a few months from permits to occupancy, depending on scope and your municipality’s approval timelines. We give you a clear schedule before work begins.

Get A Free Quote

Tell us about your project and we’ll respond within one business day with a clear next step. Every engagement starts with a no-obligation consultation, an honest assessment of feasibility and budget, and a detailed, transparent estimate — so you know exactly where your project stands before any work begins.

Basement & Income Suites