Garden Suite & ARU Builder in Richmond Hill, ON
Turnkey Secondary Suites Under Richmond Hill’s Expanded ARU Rules
Richmond Hill now permits up to three additional residential units per lot — we manage zoning review, design, permits, and construction for the right option on your property.
Garden Suites & ARUs in Richmond Hill
As expert Garden Suites Richmond Hill builders, we start every project with a zoning and feasibility review specific to your property — including flood designation checks — then carry that same team through design, permits, and construction. Zoning By-law 143-24 marked a significant shift for the City, permitting up to three additional residential units per lot across neighbourhoods like Oak Ridges and Jefferson, whether as a detached garden suite, a coach house, or additional internal units. See our ARU / Garden Suites page for full process details.
Why Richmond Hill Homeowners Choose Modinno
Richmond Hill’s recently expanded ARU rules open real options, but eligibility still depends on lot size, servicing, parking, and flood designation. Homeowners choose us because we confirm all of these specifics before any design begins.
Current zoning by-law expertise
Direct familiarity with Zoning By-law 143-24 and the City’s additional residential unit provisions.
Floodplain and servicing screening
Flood designation and servicing capacity confirmed before any design investment is made.
Fully turnkey delivery
Zoning, design, permits, and construction managed under one accountable team.
Rental-ready design standards
Layouts built with durability, storage, and tenant appeal in mind, not just minimum compliance.
How We Handle Zoning & Design for Richmond Hill Garden Suites
We confirm your property’s flood designation and zoning eligibility before proposing a design, since Zoning By-law 143-24 permits up to three additional residential units on most eligible lots but excludes basement or cellar units on floodplain land regardless of the rest of the framework. From there, we design detached units to the specific parking, setback, and lot coverage requirements that apply, and because the City’s broader Comprehensive Zoning By-law has been going through an active Ontario Land Tribunal review, we verify current requirements for your property before finalizing anything.
Frequently Asked Questions
How many additional units can I add to my Richmond Hill property?
We confirm this for your specific lot — most properties in single-family zones can now accommodate up to three additional residential units under Zoning By-law 143-24, subject to lot size, servicing, and parking requirements.
Can I build a detached garden suite in Richmond Hill?
Yes, and we confirm exact parameters for your lot during feasibility review, subject to setback, parking, and lot coverage requirements specific to detached units.
Does my property’s flood designation affect ARU eligibility?
It can, and we check this during feasibility — where a property is in a floodplain, a basement or cellar unit isn’t permitted, though a detached unit outside the floodplain area may still be an option.
How long does a garden suite project take in Richmond Hill?
Typically 8 to 14 months from initial design through construction completion for our projects, including permit review, with permit timelines being the most variable factor.
Unlock Your Richmond Hill Property’s Full Potential.
Zoning-reviewed, properly permitted, and built by one accountable team.