Legal Basement Apartments
Convert your basement into a fully permitted, income-generating apartment. Ontario Building Code compliance, fire separation, egress windows and all city inspections — handled for you.
We design, permit & construct Additional Residential Units across Ontario — legal basement apartments, garden suites, laneway homes & multiplexes. Full turnkey service, zero headaches.
Free ARU assessment · No obligation · Fast response
Rising mortgage rates and Ontario's housing shortage have created the perfect opportunity for smart homeowners. An Additional Residential Unit can generate $1,800–$3,200/month in rental income, relieve mortgage pressure, and increase your property's resale value significantly.
We're more than builders. We're your strategic partners — handling every detail from architectural drawings and second dwelling unit permits, to construction and final city inspection.
From legal basement apartment builders to garden suite construction — we deliver every type of additional residential unit, end to end.
Convert your basement into a fully permitted, income-generating apartment. Ontario Building Code compliance, fire separation, egress windows and all city inspections — handled for you.
Transform your backyard into a fully self-contained, city-approved dwelling. Perfect for rental income or multigenerational living — designed and built to code from day one.
Convert your property into a multi-unit rental powerhouse. We design and build duplexes, triplexes and fourplexes that maximize your income streams and property value.
Build a detached secondary unit on your laneway. Architectural drawings, second dwelling unit permits, and full construction managed seamlessly from start to key handover.
Turn unused outdoor space into a fully permitted, income-generating dwelling. Our garden suites are designed to integrate seamlessly with your existing property while providing complete privacy and independence for tenants or family members.
Get a Garden Suite Quote →From detached laneway homes to full multiplex conversions, we design and build every configuration that Ontario zoning allows. Our team navigates every bylaw and permit so you can focus on your return on investment.
Explore Multiplex Options →Ontario's zoning reforms and housing shortage make now the ideal time for homeowners to unlock their property's full income potential.
Generate $1,800–$3,200/month in steady rental income. Let your property pay your mortgage while you build equity.
Multi-income properties appreciate faster. An ARU can add $150,000–$400,000 to your property's market value.
House aging parents, adult children, or in-laws — with full privacy and independence for everyone.
Contribute to Ontario's affordable housing solutions while benefiting from provincial incentives and streamlined permitting.
We've streamlined ARU construction so you can go from idea to income-generating property without the stress.
We assess your property, review local zoning and bylaws, and give you a clear breakdown of what's possible — including realistic rental income projections. Completely free, zero obligation.
Our team produces architectural drawings, handles your second dwelling unit permit application, and manages all city approvals. You won't touch a single form.
Our licensed crew builds your ARU on time and on budget. We handle the final inspection and hand you the keys — ready to rent from day one.
Book your free, no-obligation property assessment today. Limited project slots available this season.
Real homeowners across the GTA who chose ARU Construction to build their additional residential units.
The ARU team handled absolutely everything — permits, design, construction. My legal basement has been rented for 4 months and already covers my full mortgage payment. Best investment I've made.
From the initial feasibility call to getting the keys to my new garden suite — completely seamless. Zero surprises, zero stress. I didn't have to deal with the city once. Absolutely outstanding.
Professional, transparent, and genuinely expert at navigating Ontario's ARU regulations. Our multiplex generates three separate income streams now. Most stress-free construction project imaginable.
Tell us about your property and we'll create a personalized plan — including rental income projections, design options, and a transparent cost estimate. No obligation.
⚡ Limited availability — secure your project slot now
Have questions about building an Additional Residential Unit? Our team is ready to help you explore your options.
© 2026 Additional Residential Units · Licensed & Insured · Serving the Greater Toronto Area & Ontario · (437) 826-4980