Our ADU services focus on the adaptive reuse of residential properties, legally converting single‑family homes, garages, and accessory structures into fully compliant suites. Whether you’re planning a garage conversions, designing an in‑law suites, or developing a compact tiny home, we provide complete ADU drawings, plans, and design‑build solutions aligned with Ontario’s evolving housing policies, including Bill 23.
From zoning analysis to final occupancy, we manage the entire suite process with precision—ensuring your project like additional dwelling unit, or tiny home is efficient, compliant, and optimized for long‑term value.
We transform underutilized garage space into premium living accommodations. Whether converting an attached garage for barrier‑free family living or a detached structure into a private in‑law suites, additional dwelling unit, or garage, our team manages the full garage conversions process with complete compliance and comfort.
Converting non‑habitable space into an tiny home, or suites requires advanced thermal engineering. We implement high‑performance insulation and vapor control systems to upgrade existing walls to SB‑12 energy efficiency standards.
We correct uneven or sloped garage floors by implementing tailored leveling solutions that create a stable, insulated surface suitable for habitable use and ready for high‑quality finishes.
Converting a garage or detached structure into living space requires upgrading the building envelope to achieve a fire‑rated assembly between the new unit and the main residence or nearby structures. We design and implement code‑compliant horizontal and vertical separations that meet Ontario Building Code Part 9 requirements, including fire‑rated drywall systems, protected structural elements, and sealed mechanical and electrical penetrations.
We specialize in converting single‑family homes into Legal Duplex units by separating the main and upper levels—ideal for homeowners seeking an in-law suites, or compact unit within the existing structure.
We retrofit floor and wall assemblies to meet strict FRR and STC standards, ensuring safety and acoustic privacy between units—critical for any tiny home, or additional dwelling unit.
We evaluate existing mechanical, electrical, and structural conditions to ensure each new unit functions safely and independently, coordinating upgrades as required to meet code and support long‑term performance.
We design and construct dedicated vestibules and egress staircases, providing secure, private entry for upper‑level units without compromising architectural integrity—perfect for in‑law suites, tiny homes, and additional dwelling units.
We conduct detailed zoning analysis to verify setbacks, lot coverage, parking, and compliance with municipal bylaws—including the expanded permissions under Bill 23. This ensures your project is viable before design begins.
We ensure every project aligns with Ontario Building Code requirements — including life‑safety, egress, fire separation, and structural standards — providing clear, accurate permit‑ready drawings that support a smooth approvals process.
By unifying design and construction, we eliminate friction between architects and trades. Our single‑source responsibility model ensures structural challenges are identified early, keeping your unit, tiny home, or suite efficient and on budget.
Aging-in-Place / Accessible Living
Envelope Retrofit & Interior Fit-out
Cost Efficient (Uses existing structure & utilities)
Bungalows with Double Garages
Max Rental Income / Investment
Renovation of Existing Shell
High ROI (Two full-sized units)
2-Story Brick Homes
Service Area
Proudly based in the Niagara Region, JMC Design Build Niagara serves homeowners along the QEW Corridor from Fort Erie to Burlington, with active project management extending throughout the Greater Hamilton Area.
Not every property is a candidate for conversion. Contact us today for a Feasibility Review to determine the best strategy for your home and budget.