Series Overview
ADU Series — factory-built backyard homes.
Seven additional dwelling units from General Coach Canada, built in Hensall, Ontario and delivered finished. From a 282 sq ft studio to a 423 sq ft one-bedroom suite — designed for garden suites, rental income, and multigenerational living.
The Lineup
Seven ADU floor plans.
Studios, open flats, and one-bedroom suites. Click a model for its floor plan, full specifications, and pricing.
Studio 20
Studio · 282 sq ft · 20′ × 14′
From $96,244
Studio 24
Studio · 320 sq ft · 24′ × 13′
From $103,744
Studio 26
Studio · 310 sq ft · 26′ × 14′
From $112,244
Flat 24
Flat · 296 sq ft · 24′ × 12′
From $101,244
Flat 28
Flat · 310 sq ft · 28′ × 14′
From $119,994
Suite 30
Suite · 423 sq ft · 30′ × 14′
From $119,369
Suite 32
Suite · 395 sq ft · 32′ × 14′
From $129,494
Prices are a starting point (“Our Price”), an estimate subject to final manufacturer approval. Delivery, foundation, and site costs are quoted separately for your specific lot.
Construction Class
Built to CSA A277 — modular, to the building code.
- CSA A277 means each home is factory-built to the Ontario Building Code and certified module-by-module — the same code a site-built house is held to.
- Set on a permanent foundation and finished to the building code — a permanent dwelling you own like any house.
- A277 is the most broadly accepted construction class for additional dwelling units across Ontario municipalities.
- Because the build is factory-certified, many municipalities offer a simpler permit path — your municipality and a designer confirm what applies to your lot.
Standard Specifications
What every ADU Series home includes.
The standard build across all seven floor plans. Final specifications are confirmed with James for your model and lot.
Construction
- Seamless fibre mesh underbelly
- 90" sidewall height
- 2x6 wall studding on 16" centres — R24
- 2x8 transverse floor joists on 16" centres — R32
- 3/4" T&G plywood subfloor, glued and screwed
- Roof insulation — R40
- 7/16" OSB roof sheathing with 15 lb felt paper
- 30-year fibreglass shingles with ice and water shield
- 10" vented soffit with 2x6 fascia board
- 6 mil vapour barrier on roof and sidewalls
- 3/8" OSB exterior sheathing with building wrap
Electrical
- 100 amp hydro service and breaker
- (2) exterior GFCI receptacles near entry and patio door
- Exterior coach light near entry and patio door
- (1) USB combination outlet in living room
- USB combination outlets in master bedroom
- Ceiling fan with light kit and remote (living room)
- (1) CO detector
- Smoke detector
- LED low-profile pot lights throughout
- LED matte-black pendants over islands / peninsulas
- LED matte-black vanity light in bathrooms
- Dimmer switches for main living, kitchen and master bedroom
- Decora-style receptacles and light switches
Kitchen & Appliances
- Stainless steel 12 cf or 18 cf refrigerator
- Stainless steel 5 cu ft self-cleaning gas range
- Stainless steel OTR microwave / vent hood
- Laminate kitchen counter with rolled edge
- Double-compartment stainless steel sink
- Matte-black kitchen faucet with pullout spray head
- Custom-built box-style modular cabinetry
- Thermofoil cabinet doors with soft-close hinges
- Thermofoil cabinet drawers with soft-close glides
- Matte-black cabinet / drawer pull bars
- Washer/dryer ready (floor-plan specific)
Interior
- Interior wall construction on 16" centres
- Vinyl-wrapped drywall ceiling throughout
- White 2-panel interior doors throughout
- Matte-black lever door handles and hinges throughout
- Durable rolled vinyl flooring throughout
- Custom-designed coordinated valances throughout
- White horizontal dual-shade blinds throughout
- Matte-black rod with drapery at patio and master bedroom
- Pre-finished white wire shelving / closet rod
- 3/4" door and window jambs throughout
- 2 3/4" crown moulding throughout
- 2 3/4" door and window casing throughout
- 1 7/16" baseboard in living room and hallways
- (3) cabinet colour options available
- (4) interior décor packages available
Heating & Cooling
- 60,000 BTU forced-air LP furnace with electronic ignition, or mini-split
- Digital wall-mount thermostat
- Heat duct and registers within insulated floor cavity
- Safe-T-Alert gas alarm
- Talking strobe smoke alarm (bedrooms)
- Prep for 1.5-ton air conditioning unit
- Cyclone air exchanger
Plumbing
- Uponor ProPEX polyethylene water lines
- ABS drainage / waste pipes
- Water heater bypass and low-point drain
- Rinnai on-demand tankless water heater (floor-plan specific)
- 20-gal electric water heater (floor-plan specific)
- (1) frost-free exterior faucet near sink
Bathroom
- Custom-built modular cabinet vanity
- White porcelain sink
- Matte-black curved shower rod with curtain
- Matte-black towel bar and tissue holder
- Matte-black diverter, tub and shower faucet
- Matte-black vanity faucet
- Smart / comfort-height toilets
- 80 CFM flex exhaust fan
- Medicine cabinet with mirror on door
Bedrooms
- Master bedroom closets with drawers and mirror doors
Exterior
- Gentek D-4.5 vinyl siding — driftwood finish
- White vinyl soffit and aluminum fascia
Windows & Doors
- Double-hung thermopane vinyl windows
- White 6', 8' or 9' vinyl thermopane patio door
- Prairie window grilles
- Insulated aluminum rain-glass exterior door (36" x 80")
- Aluminum storm door with screen (36" x 80")
- 3/4" window and door jambs
- Matte-black exterior door lock and handle set
- Spray-foam insulated windows and doors
Design Upgrades
Optional upgrades.
- Air conditioning unit
- Linear electric fireplace
- Washer and dryer unit
- Contemporary furniture
- White shiplap accent fireplace surround
- Undermount LED cabinet lighting (kitchen)
- Stainless steel dishwasher
- Sequoia Select vinyl siding on exterior
Thinking about a backyard suite?
James Clarke — REALTOR®, General Manager — can tell you whether your lot qualifies and give you a complete landed cost: home + delivery + foundation + permits.