Building a garden suite or multiplex is one of the most significant financial decisions you’ll make as a homeowner. Get it right, and it’s a wealth-building asset that works for you for decades. Get it wrong — with an unlicensed contractor, a botched permit, or a vague estimate that doubles mid-project — and you’re dealing with delays, cost overruns, and potentially an illegal structure that creates real legal and financial liability. Before you commit to any builder in Toronto, Mississauga, Brampton, Vaughan, Oakville, or anywhere in the GTA, ask these seven questions and listen carefully to the answers.
1. Are You Familiar With My Specific Municipality’s Current Bylaws?
ARU regulations differ significantly between Toronto, Mississauga, Brampton, Vaughan, Oakville, Markham, and Richmond Hill. A builder primarily working in one municipality may give you outdated or simply inapplicable guidance for your city. Rules around setbacks, lot coverage, parking requirements, and utility connections change regularly. ARU maintains current, detailed knowledge of bylaws across every GTA municipality — from Halton Hills and Georgetown to Whitby and Oshawa.
2. Do You Handle the Full Permit Process?
Permit applications require architectural drawings, site plans, structural engineering, and coordination with multiple city departments. (As outlined in the Ontario Building Code guidelines, these requirements are mandatory for any legal suite.) Many contractors in the GTA hand this back to the homeowner — leaving you to navigate a complex bureaucratic process while also managing your daily life. ARU provides complete architectural drawings, feasibility assessments, and full permit management from application to approval, serving homeowners in Brampton, Scarborough, North York, Hamilton, Cambridge, Kitchener, Guelph, and Brantford.
3. Can You Show Me Completed Projects and Real References?
Any credible ARU builder should be able to show you completed garden suites, multiplexes, or laneway homes — not just renders — and connect you with homeowners who can honestly speak to the experience. Visit to view ARU’s portfolio of completed builds across communities including Toronto, Mississauga, Oakville, Burlington, and beyond. We encourage prospective clients to speak directly with past homeowners.
4. What Is Your Project Timeline and How Do You Handle Delays?
Construction delays are the single most common homeowner frustration in GTA renovation and build projects. Ask specifically how your builder communicates timeline changes, who your dedicated point of contact is throughout the project, and what their actual track record looks like on delivering to schedule. ARU’s project management team provides structured scheduling, proactive milestone updates, and direct communication — whether your project is in Acton, Bolton, Caledon, King City, Bradford, or central Toronto.
5. Is Your Cost Estimate Fixed, Itemised, and Complete?
Vague ballpark estimates lead to budget shock when you’re halfway through construction. Ask for a detailed, itemized cost breakdown that includes design, permits, labour, materials, and all associated fees. Understand exactly what triggers a change order and how those are priced. ARU provides transparent, complete cost estimates before work begins — so homeowners in Milton, Georgetown, Halton Hills, Cambridge, and Kitchener know precisely what they’re committing to.
6. Do You Build Fully Legal, Code-Compliant Units That Pass Inspection?
This question deserves a direct, unambiguous answer. Some GTA contractors cut corners on fire separation, egress window sizing, electrical panel capacity, and plumbing rough-ins — creating units that technically exist but cannot be legally rented or easily sold. Every unit ARU builds is fully code-compliant, passes all required city inspections, and comes with the documentation you need to rent and eventually sell with confidence.
7. Are You a True Turnkey Provider?
Managing separate architects, engineers, permit consultants, and construction crews across a GTA build project is exhausting, time-consuming, and risky. A genuine turnkey builder coordinates everything under one roof with one accountable team. ARU delivers design, permits, construction, and project management as a fully integrated service — serving homeowners from Scarborough and North York to Guelph, Brantford, Hamilton, and Burlington.
Ready to work with a GTA ARU builder who answers all seven with confidence? Book your free consultation at additionalresidentialunits.ca or call 437-826-4980.