Garden Suite & ADU Builder in Hamilton, ON
Turnkey Detached Suites Under Hamilton’s ADU Program
As a leading builder for Garden Suites Hamilton, we help homeowners build legal Hamilton permits detached Additional Dwelling Units on most residential lots — we manage zoning review, design, permits, and construction for a fully finished garden suite.
Garden Suites & ADUs in Hamilton
As expert Garden Suites Hamilton builders, we start every project with a zoning and feasibility review specific to your property, then carry that same team through design, permits, and construction. Many Hamilton properties, from Ancaster to Stoney Creek to the lower city, can potentially support both an internal basement apartment and a separate detached ADU, and we help you work out the right combination for your lot before committing to a design. See our ARU / Garden Suites page for full process detail.
Why Hamilton Homeowners Choose Modinno
Hamilton’s detached ADU rules include specific floor area, setback, and lot coverage limits that vary from what neighbouring cities allow. Homeowners choose us because we confirm the exact parameters for your lot before any design investment is made.
Detached ADU size and setback expertise
Direct familiarity with Hamilton’s floor area, lot coverage, and setback requirements for detached units.
Water service and servicing review
Confirmation of water service capacity, a hard requirement for ADU permit issuance, addressed early.
Fully turnkey delivery
Zoning, design, permits, and construction managed under one accountable team.
Rental-ready design standards
Layouts built with durability, storage, and long-term rental appeal in mind.
How We Handle Zoning & Design for Hamilton ADUs
We calculate your property’s exact ADU allowance before designing anything — generally a detached unit capped around 75 square metres, with combined lot coverage across all buildings limited to 45% and a minimum 4.0-metre setback from the primary dwelling. Because these standards have been updated more than once since 2021, we verify current requirements with the City for your specific property, and we confirm water service capacity upfront since Hamilton won’t issue a permit without it.
Frequently Asked Questions
Can I build a detached garden suite in Hamilton?
Yes, and we confirm eligibility for your specific property — most lots with a single detached, semi-detached, or street townhouse dwelling qualify for one detached Additional Dwelling Unit, subject to floor area, setback, and lot coverage limits.
How big can a detached ADU be in Hamilton?
We calculate this precisely for your lot — generally capped at 75 square metres of gross floor area, and no larger than the primary dwelling.
Can I have both a basement apartment and a detached garden suite in Hamilton?
In many cases, yes — we assess this combination during feasibility review, since Hamilton allows an internal ADU and a detached ADU on the same qualifying lot.
How long does a garden suite project take in Hamilton?
Typically 8 to 14 months from initial design through construction completion for our projects, including permit review, with permit timelines and water service upgrades being the most variable factors.
Unlock Your Hamilton Property’s Full Potential.
Zoning-reviewed, properly permitted, and built by one accountable team.