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.
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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.
No matter the challenge, we build on what we know works and elevate your vision of success.
What’s Included
Our basement and income suite service is fully turnkey, covering planning, approvals, construction, and final occupancy.
- Legal secondary suite conversions
- Zoning & feasibility review
- Architectural & engineered drawings
- Permit submission, inspections, and approvals
- Egress windows & fire-rated assemblies
- Plumbing, electrical, and HVAC upgrades
- Modern kitchens and bathrooms
- Flooring, lighting, and interior finishes
- Soundproofing and insulation systems
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.
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Get A Free Quote
Exceptional secondary suites are built through clear communication, thoughtful planning, and disciplined execution. If you’re considering a basement or income suite and want clarity around feasibility, approvals, and next steps, we invite you to begin with a consultation.
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.
We begin with a full assessment of ceiling height, fire separation, egress requirements, and zoning restrictions to ensure compliance with the Ontario Building Code. Each layout is designed for comfort, functionality, and long-term durability.
We build using durable, moisture-resistant materials, updated electrical and plumbing systems, and high-performance soundproofing. Kitchens, bathrooms, flooring, and lighting are installed to modern standards that appeal to quality tenants.
From design and permits to construction, inspections, and final approval, we manage the entire project. You get one coordinated process and a suite delivered move-in ready, backed by ongoing support.
Working Process
How we work for our customer
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.
We have a track record of delivering significant extension and expansion projects for buildings as diverse as schools, leisure centres, churches, and industrial units – providing much needed space and new facilities for our clients. We are used to working in close proximity to occupied buildings.
1.Consultation & Feasibility Review
2. Design Coordination, Permits & Construction
3. Completion, City Approval & Aftercare Support
Frequently Asked Questions
Yes. We manage architectural drawings, engineering, permit submissions, inspections, and final approvals.
Not always. Factors such as ceiling height, zoning, lot conditions, and fire separation requirements determine feasibility. We assess this during the consultation phase.
Timelines vary based on scope and approvals, but we provide a clear project schedule once feasibility and permits are confirmed.
Payments are structured in stages aligned with project milestones, inspections, and progress—providing transparency and control throughout construction.
Benefit Of Service
- A fully legal, income-generating unit
- Increased property value and rental potential
- Durable finishes designed for long-term use
- Improved sound control and energy efficiency
- Safe, fully code-compliant construction
