NEW FOR 2026!
GRANGE
GRANGE
A single-storey garden suite ADU with two equal bedrooms, open living, kitchen and dining — connected to a front outdoor space that extends the home, not just the footprint. Built for couples, growing families, or anyone who wants proper two-bedroom living on Ontario property.
Starting at
$166k
(Essentials)
GROSS AREA
852
SQ FT
LIVING AREA
672
SQ FT
BEDROOM
2
116 SQ FT EACH
BATHROOM
1
Net Zero Ready label applies to Complete Turnkey builds only. Essentials packages are engineered to the same performance standard.
GRANGE
The Garden Suite ADU Built for People Who Want a Home — Not a Unit
The Garden Suite ADU Built for People Who Want a Home — Not a Unit
Two proper bedrooms — equal in size, equal in light. Open living, kitchen and dining connecting to a front outdoor deck. The Grange is the garden suite ADU for Ontario homeowners who want a real home on their property, not an afterthought.
Best suited for: Couples aging in place · Families needing a separate two-bedroom suite · Long-term rental income · Aging parents who want a guest room · Multigenerational households wanting two private spaces
Takes 30 seconds • No commitment
Ready to go now?
FLOOR PLAN
Grange Garden Suite ADU — Floor Plan & Layout
Grange Garden Suite ADU — Floor Plan & Layout
ROOM SUMMARY
Living Spaces
Living / Dining / Kitchen 295 sq ft
Pantry 6 sq ft
Private Spaces
Bedroom I 116 sq ft
Bedroom II 116 sq ft
Closet I 12 sq ft
Closet II 12 sq ft
Closet III 14 sq ft
Bathroom 39 sq ft
Utility
Mechanical Room 29 sq ft
Total Livable Area 672 sq ft
Screened porch or deck area is not included in livable sq ft — quoted separately on the first call.
The Grange's single-storey layout puts two equal bedrooms side by side — no stairs, no loft compromise. At 852 sq ft it's the most efficient garden suite ADU in the Quantum lineup, sized for Ontario lots without sacrificing livability.
Takes 30 seconds • No commitment
What Makes Grange Different
Why the Grange Works as a Garden Suite ADU
Why the Grange Works as a Garden Suite ADU
Outdoor living changes everything in a garden suite ADU
Outdoor living changes everything in a garden suite ADU
A screened porch turns a compact ADU into a home with a place to sit in the evening. No other model in the lineup offers this — and no interior sq ft replaces it.
Two equal bedrooms — not a bedroom and a loft
Two equal bedrooms — not a bedroom and a loft
At 116 sq ft each, neither bedroom is a compromise. Works for a couple who wants defined space, two parents, or a parent and live-in caregiver.
Built for the lot — the right fit for Ontario properties
Built for the lot — the right fit for Ontario properties
Rural, acreage, waterfront, or treed lot — Verge responds to the outdoor environment rather than ignoring it. The right build for owners who care about where they are.
Three closets — more livable space in a compact garden suite ADU
Three closets — more livable space in a compact garden suite ADU
Two bedroom closets plus a shared third. Storage is usually the first thing sacrificed in compact builds. Not here.
OVERVIEW
Is the Grange the Right Garden Suite ADU for Your Property?
Is the Grange the Right Garden Suite ADU for Your Property?
One 15-minute call covers your site, your timeline, and your next step. No pressure. No obligations.
Takes 30 seconds • No commitment
Ready?
PICK YOUR STARTING POINT
Choose Your Grange Garden Suite ADU Package
Choose Your Grange Garden Suite ADU Package
Every package is built on the same PHI-certified panels and the same high-performance envelope. The difference is how much of the project you want Quantum to own.
30-day superstructure delivery
Essentials Package
Essentials Package
Quantum manufactures, delivers, and installs the complete building envelope. You take it from there — with everything you need to hand off confidently to your own trades.
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QUANTUM PROVIDES:
PHI-certified panels delivered + installed
Foundation + slab (no geo-tech, no site survey)
Complete high-performance thermal envelope
Blower door test + airtightness sign-off
Thorough completion report
QC quality assurance checklist
Wall care guide for your trades
Most hands-off
Complete Turnkey
Complete Turnkey
Quantum acts as your General Contractor from first conversation to final walkthrough. Every trade. Every permit. Every stage. You decide to build — we handle everything that comes after.
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QUANTUM PROVIDES
PHI-certified panels + complete envelope
Foundation + slab (Includes geo-tech and site survey)
All mechanical systems — HVAC, electrical, plumbing
Complete interior finishes — drywall, flooring, paint, trim
Cabinetry, countertops + fixtures throughout
Every trade coordinated by Quantum
Final walkthrough + handover
Want Quantum's process and quality assurance without Quantum's crew?
Want Quantum's process and quality assurance without Quantum's crew?
Add the PM Package ($5,000) — material takeoff, QC checklist, timeline and permit guidance — or the PM Service ($15,000) — Quantum supports you finding and managing your local trades of choice. Available on Essentials package.
What's Included in Every Grange Garden Suite ADU
What's Included in Every Grange Garden Suite ADU
This Model Includes:
This Model Includes:
Duxton Triple-Pane Windows
No drafts. No cold spots. Quiet, stable interiors.
PHI-tested fiberglass casement windows designed for cold climates. Standard, not an upgrade.
In-Floor Heated Bathroom Tile
Warm floors first step out of the shower. Every morning.
Electric in-floor heating beneath ceramic tile — adding comfort where you notice it most.
All-Electric. One Bill.
No propane. No gas. No split systems.
Electric hot water, heating, and cooling. One system aligned with Net-Zero Ready targets.
ERV — Energy Recovery Ventilator
Fresh air. No heat loss.
Continuous fresh air exchange with heat recovery. Quiet, efficient, always running in the background.
Ductless Mini-Split Heat Pump
No furnace. No ductwork. No propane. Ever.
One quiet heat pump does all the work. No fossil fuels, no maintenance contracts.
PHI-Certified Cold-Climate Panels
PHI-certified cold-climate panels. Proven. Built to perform.
The panels are PHI-certified by the Passive House Institute — third-party verified for cold climates.
Standard exclusions — always told upfront:
Standard exclusions — always told upfront:
Site preparation · Foundation engineering · Service hookups (water, sewer, electrical to site) · Geotechnical work
"We walk you through what's outside before you sign. That conversation is part of the first call."
FINISHES
Quantum Trim Level — Standard Finish Package
Quantum Trim Level — Standard Finish Package
Exterior Cladding Double 4" horizontal vinyl siding
Roofing Architectural shingles — no 3-tab. Ice-and-water membrane at high-slope transitions.
Soffit + Fascia Aluminum vented soffit and aluminum fascia
Quantum Appliances Package Upgrade Add-On
French door refrigerator (30"), 30" freestanding electric range, stackable ventless washer/dryer tower. Not included in standard scope — available as an add-on or apply your Build It Better Credit.
French door refrigerator (30"), 30" freestanding electric range, stackable ventless washer/dryer tower. Not included in standard scope — available as an add-on or apply your Build It Better Credit.
Cabinetry Shaker-style, solid wood doors, MDF carcass, soft-close hinges and drawers throughout
Countertops Quartz — kitchen
Flooring — Dry Areas Floating click luxury vinyl plank (LVP)
Flooring — Wet Areas Ceramic tile with electric in-floor heating mat
Final selections guided by pricing and availability. Exterior colours fully customizable. Appliances available as an upgrade add-on — ask on your call or apply your $7,000 Build It Better Credit.
OTHER HOMES PEOPLE ARE EXPLORING
Similar Homes Worth Comparing
Similar Homes Worth Comparing
If you're looking at a home around 672 sq ft, these models are worth a look. All built with PHI-certified panels and delivered Net Zero Ready.
BirdNest
1 Bed ㆍ 1 Bath ㆍ 546 SQ FT.
A fully accessible home designed for comfort, independence, and long-term living.
settings
Starting At
$157 K
Cove
1 Bed ㆍ 1 Bath ㆍ 398 SQ FT.
A simple, efficient one-bedroom home — perfect for small lots, rental income, or independent living.
settings
Starting At
$120 K
Kin
2 Bed ㆍ 1 Bath ㆍ 698 SQ FT.
Our most versatile layout — ideal for families, multigenerational living, or long-term value.
settings
Starting At
$164 K
Build Your Garden Suite ADU Right. Book a 15-Minute Call.
Build Your Garden Suite ADU Right. Book a 15-Minute Call.
Free 15-minute call. No commitment. A straight conversation about your property, your goals, and whether the Grange garden suite ADU is the right move.
Takes 30 seconds • No commitment
I'm Ready now,
Net Zero Ready label applies to Complete Turnkey builds only. Essentials packages are engineered to the same performance standard.
(705) 286-0019
Info@quantumpassivhaus.com
Info@quantumpassivhaus.com
QuantumPassivhaus.com
QuantumPassivhaus.com
What Quantum Homeowners Are Saying...
What Quantum Homeowners Are Saying...
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We lose power often where we live, but the house holds its temperature so well that we don’t have to worry. Even during extreme heat, without air conditioning, the house stayed comfortable.
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Gail & Mike
Quantum Homeowner
The build process was surprisingly efficient. Seeing the panels come together so quickly, and being enclosed early, gave us confidence. Even during storms and power outages, the house holds its heat and stays comfortable
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Cathy and John
Quantum Homeowner
Things didn’t always go as planned, but we always felt they had our backs. Whether resourcing alternate materials, working with subcontractors, or taking on more work, the whole team was talented and friendly.
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Marci & Alan
Quantum Homeowner
From a cost perspective, it was basically the same as building a traditional house at the time, but the efficiency is far better. Everything here is electric, and we only have one bill. In the winter it’s around $250 a month, and in the summer closer to $125—and that includes the spa. Before, we were paying thousands a year in propane alone.
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Gerry & Hilde
Quantum Homeowner
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