Garden Suites · Vaughan, York Region
Garden suites for Vaughan backyards: a detached unit under By-law 083-2025, sized to the lot’s setbacks and placed around protected trees and side access. We design the suite in Richmond Hill, file it with the City of Vaughan Building Standards Department and build it, to rent out or to house family.
What’s included
A garden suite is a small new house with all of a house’s rules, on a lot that already has one. The zoning check comes first, because it decides whether there is a suite at all. In Vaughan the package goes to the City of Vaughan Building Standards Department, and it is drawn to that department’s checklist.
Before anything is drawn
Lot size, setbacks, height, coverage, tree protection and servicing, checked against the by-law to confirm what fits.
The design
Layouts that get living space out of a small footprint, with a second storey where the by-law allows it.
Built to stand alone
Foundation, framing and roof designed by our P.Eng for a building with no neighbour to lean on.
Move-in condition
Kitchen, bathroom, heating and finishes chosen for a unit that will be rented or lived in by family for years.
The package
Find your situation below. If it’s there, this is the service, and the card underneath is everything you get from our one office.
05 common situations
07
items in your package, all from one P.Eng and BCIN team.
Drawn & stamped in-house
How it runs
Four steps, starting with the one that decides everything else: whether the lot allows a suite at all.
We measure the lot against the by-law and tell you the largest suite that fits, or that one does not, before you spend on design.
Plans, structure, mechanical and site drawings from one office, filed with the city and answered until the permit is issued.
Excavation and foundation, framing, rough-ins, exterior and finishes by our crew, inspected at each stage.
Water, sewer and electrical connected, the final inspection passed, and the unit ready to rent or move into.
Case files
Open any file for the scope, the disciplines involved, what we delivered and what the owner came away with.
A compact two-storey suite in a Toronto backyard. Architectural and structural drawings, zoning review and a framing package that makes every square foot count.
Delivered
New living space on a lot the owners already had.
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Structural walls came out and rooms were added to open the plan. Beam and column design, permit drawings and renovation coordination through to final inspection.
Delivered
An open layout where the load-bearing walls used to be.
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A code-compliant second unit with its own entrance, fire separations between the units, HVAC design and the full permit package.
Delivered
A legal second unit that brings in rent and adds property value.
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A new build taken from the client’s sketch to occupancy, with the architectural, structural and mechanical design done by one team.
Delivered
Built to the client’s own plan, with one team answering for every discipline.
Start a project like thisA two-storey garden suite laid out to get the most usable space from the footprint, designed and permitted as a rentable unit.
Delivered
Rental income and a higher property value.
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A dental office converted into a supermarket. Interior renovation, a new plumbing system and fire separations upgraded to the Ontario Fire Code.
Delivered
A dental office reopened as a supermarket, compliant with the Ontario Fire Code.
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A custom covered porch that turns the front of the house into usable outdoor space. Addition design and structural drawings for the permit.
Delivered
More usable outdoor space and added home value.
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Site grading to manage drainage and prepare the land for a new driveway, drawn as a grading plan for the site alteration permit.
Delivered
Drainage handled and the land ready for a new driveway.
Start a project like thisPhoto plates
Additions, basements, kitchens, new builds and commercial fit-outs. Drag a row to scrub through it, or open any photo full size.Tap any photo to see it full size.
21 platesResidential, commercial & new build
The drawing set
Framing schedules, wall assemblies, dimensions and a city review stamp, as issued. Client title blocks are trimmed off to protect the people we drew them for.
Drawing set
Sheets in this set
Sheet title
Existing basement plan
The existing house recorded before any design: beams, joists and bearing walls.
Drawing no.
2 of 5
Service area
From the office we cover the whole GTA, north to Barrie and Orillia, east to Peterborough and Cobourg, west to Kitchener and Brantford, and down through Niagara.
46 across 8 regions
York Region
Toronto & Peel
Halton
Durham
Simcoe & Dufferin
Waterloo, Wellington & Brant
Hamilton, Niagara & Haldimand
Kawarthas & Northumberland
Past the 90-minute line
We've also completed projects in London and Strathroy. Farther out than that? Call (416) 990-9179 and ask.
Permits filed with municipalities including
Before you call
Anything we haven’t answered here, we’ll answer on a call. The first consultation is free.
(416) 990-9179To Vaughan. The application goes to the City of Vaughan Building Standards Department, not York Region, as a new building on your lot with a drawing set of its own. Grading is the other review a backyard building brings. Vaughan’s Site Alteration By-law 031-2024 is aimed at larger sites; the city states it does not apply to individual residential properties, whose grading is reviewed with the building permit. For a suite, then, the grading plan travels with the permit set. We draw the suite, file it and answer the examiner’s comments until the permit is issued.
Only if the lot is in a TRCA Regulated Area, near a valley, a watercourse or a floodplain. TRCA’s rule covers building anything there, so a suite needs its permit, and Vaughan will not issue the building permit until you have it. The rule covers changing the grade as well, so in a Regulated Area the suite’s regrading falls under TRCA’s permit too, even though Vaughan’s own site alteration by-law leaves house lots to the building permit. TRCA asks for a pre-submission consultation, and we run its Regulated Area Search for your address.
Under By-law 083-2025, which amends Vaughan’s Zoning By-law 001-2021, a lot may have a maximum of two additional residential units: either two within a single detached, semi-detached or townhouse dwelling, or one within the dwelling and one within a detached residential accessory structure. An additional residential unit is only permitted on a lot with municipal water and sanitary services, and other zoning standards also apply.
Yes, at 20 cm across or more. Vaughan’s Tree Protection By-law 177-2025 regulates the destruction or injuring of trees on private and public property. Trees with a diameter of 20 centimetres or more, or a base diameter of 20 centimetres or more, must not be injured, destroyed or removed without a permit, which is issued through Parks and Forestry Operations. That permit is a separate application from the building permit, and we file it with the suite drawings when the suite or its services reach a protected tree.
Yes. We take on garden suites across Vaughan, including Woodbridge and Maple, about half an hour from our Richmond Hill office. The first consultation is free, by phone or on site.
Three things to start: property address and a survey, if you have one; whether the suite is for family or rent; and photos of the backyard and the side-yard access. Send those and we tell you what the City of Vaughan Building Standards Department will ask for before we quote.
A suite there is a new building inside a heritage conservation district, so it gets a check that suites elsewhere in the city do not. For a house in the Kleinburg-Nashville, Maple, Thornhill or Woodbridge district, we confirm with the City of Vaughan what that district asks of a backyard building before the massing and materials are drawn, then file the permit set with the Building Standards Department.
Yes, on the same terms. Vaughan put a parallel unit rule into the older by-law through By-law 082-2025, so a lot that stays under 1-88 because of an open appeal can hold a garden suite just as a lot under Zoning By-law 001-2021 can. The height and setback limits are then read from 1-88, so we confirm which by-law covers your address before placing the suite.
It can, as long as the garage is detached: By-law 083-2025 allows the lot’s outside unit in a detached residential accessory structure. The building then has to meet the height and setback limits Zoning By-law 001-2021 sets for it, and our engineer checks whether the garage’s foundation and walls can carry a second floor before anything is designed.
Yes. A suite permitted under Vaughan’s By-law 083-2025 is an added residential unit, and Ontario’s regulation lets anyone live in one, a relative or a tenant, whether or not they own the lot. We design it to be rented and see it through the inspections the City of Vaughan Building Standards Department carries out under the permit.
Searched & answered
Short answers to the garden suites questions people search most, and the broader topics they lead to.
Not covered here? Book a free consultationA garden suite is a self-contained home in the backyard of a house, detached from the main building, with its own kitchen, bathroom and entrance. Local by-laws set its size, setbacks and height, and those rules differ from one municipality to the next. Fine Engineering measures a lot against them at the start of every garden suite project.
There is no single figure. A garden suite is priced like a small house, and the lot then moves the total up or down through the length of the service run from the house and how easily machines can reach the yard. Fine Engineering prices each suite from a written scope after the zoning check, and the first consultation is free.
Most often because water crosses a property line, the ground slopes too gently away from the house, or the swales and elevations do not tie into the survey. Reviewers also return plans that lack erosion control, or an engineer’s stamp where one is required. Fine Engineering designs grading to each municipality’s own criteria and revises the plan to answer the reviewer’s comments.
Within limits the municipality sets. Its lot grading criteria give a minimum slope, so water runs away from the house, and a maximum, beyond which the change in level needs a retaining wall. The figures differ from one municipality to the next, so a plan follows the local criteria rather than a rule of thumb. Fine Engineering sets the slopes and any walls in one design.
The measures that keep soil on a site during construction: silt fence along the boundaries, a mud mat at the driveway, protection over catch basins and cover on stockpiles. Municipalities often make them a condition of a grading or site alteration approval and inspect for them. Fine Engineering puts erosion and sediment control on every grading plan it draws.
Often, yes. A tall retaining wall, or one that holds up a driveway, a building or a neighbour’s yard, generally needs a building permit and an engineered design, and a wall that changes the grade can also need a site alteration permit. Low garden walls usually do not. Fine Engineering confirms the height that triggers a permit on the site, then designs the wall and the grading around it.
Good to know
In Vaughan the reviewer is the City of Vaughan Building Standards Department. Every Vaughan lot sets its own terms: rear-yard depth, setbacks, height limits, tree protection and the route for water, sewer and power decide whether a suite fits.
We walk the site with the survey, usually within a day or two of the call, before anything is drawn, then file the garden suites package to the City of Vaughan Building Standards Department’s own checklist.
Vaughan’s housing is single-detached homes built mostly from the 1980s onward, with Woodbridge and Thornhill largely built out. On an established street the yard is usually landscaped and the house finished, so a garden suite comes down to side access for the excavation and a service route across the yard that disturbs as little as possible.
A garden suite application starts in Vaughan’s Online Permitting Portal at eservices.vaughan.ca, and its drawings go up through the linked ePlans Portal: a site plan with the suite’s setbacks and the trees around it, the grading, the floor plans, the structure and the service connections back to the house.
From then on the portal’s My Permits / Services page shows the file’s status. When the Building Standards Department asks for changes, we revise the set and answer each comment, and you hear from us when the permit is issued.
A Vaughan garden suite’s size comes from the zoning standards By-law 083-2025 leaves in place: the suite’s height, its distance from each lot line and how much of the lot all the buildings together cover.
Ontario’s regulation adds two rules of its own. On a lot with added units, buildings may cover up to 45 per cent of it unless the by-law allows more, and the suite must stand at least 4 m from the house unless the by-law permits less. We fit the largest suite the survey allows within both.
Contact us
Send us the address and we’ll tell you whether a suite fits the lot, on a free first call.
First consultation free(416) 990-9179