Ontario's prefab in-law suite ADU
BIRDSNEST
BIRDSNEST
A detached in-law suite ADU designed for aging parents, a returning adult child, or a long-term tenant. King-sized bedroom, accessible bathroom, open living — built for people who want to live well, not just fit.
Starting at
$157k
(Essentials)
GROSS AREA
694
SQ FT
LIVING AREA
545
SQ FT
BEDROOM
1
153 SQ FT
BATHROOM
1
81 SQ FT
Net Zero Ready label applies to Complete Turnkey builds only. Essentials packages are engineered to the same performance standard.
OVERVIEW
The In-Law Suite ADU That Lives Bigger Than It Looks
The In-Law Suite ADU That Lives Bigger Than It Looks
Purpose-built as a detached in-law suite for parents, couples, or long-term tenants. Every square foot allocated where a couple actually wants it.
Best suited for: Aging parents needing an accessible in-law suite · Adult children returning home · Multi-generational households · Long-term rental income · Accessible granny suite needs.
Takes 30 seconds • No commitment
Skip the call
FLOOR PLAN
BIRDNEST In-Law Suite ADU — Floor Plan & Layout
BIRDNEST In-Law Suite ADU — Floor Plan & Layout
ROOM SUMMARY
| Living Spaces | |
| Living Room | 66 sq ft |
| Kitchen / Dining | 157 sq ft |
| Private Spaces | |
| Bedroom | 153 sq ft |
| Bathroom | 81 sq ft |
| Closet × 2 | 10 sq ft ea. |
| Utility | |
| Foyer | 33 sq ft |
| Mechanical Room | 13 sq ft |
| Total Living Area | 546 sq ft |
The BirdNest's single-storey layout makes it Ontario's most accessible prefab in-law suite ADU — no stairs, wide doorways, and a bathroom designed for long-term comfort.
Takes 30 seconds • No commitment
BIRDSNEST
Why the BirdNest Works as a Detached In-Law Suite
Why the BirdNest Works as a Detached In-Law Suite
King-sized bedroom — private comfort for aging parents
King-sized bedroom — private comfort for aging parents
At 153 sq ft, the bedroom fits a king or queen with room to move. Most ADUs make you choose between the bed and the rest of the room.
Accessible bathroom with full laundry included
Accessible bathroom with full laundry included
81 sq ft is a real bathroom — enough space for two people to use comfortably, and room to add accessibility features if the need arises.
Single-storey layout — multigenerational by design
Single-storey layout — multigenerational by design
A generous bedroom and accessible bathroom layout make this the right fit for an aging parent couple who wants to live close — but independently.
Detached for privacy — connected for family
Detached for privacy — connected for family
Couples' getaway rentals with a proper bedroom and bathroom consistently outperform studio listings. The name and the space work together.
OVERVIEW
Is the BirdNest the Right In-Law Suite ADU for Your Property?
Is the BirdNest the Right In-Law Suite ADU for Your Property?
One 15-minute call to confirm your lot, your timeline, and your next steps. No pressure. No obligations.
Takes 30 seconds • No commitment
I Know What I Want
PICK YOUR STARTING POINT
Choose Your BirdNest In-Law Suite Package
Choose Your BirdNest In-Law Suite 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.
arrow_drop_down_circle
Divider Text
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.
arrow_drop_down_circle
Divider Text
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 BirdNest In-Law Suite ADU
What's Included in Every BirdNest In-Law 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 from the 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 streamlined 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
Canada’s PHI-certified cold-climate panels. Proven. Built to perform.
The panels themselves 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 546 sq ft, these models are worth a look. All built with PHI-certified panels and delivered Net Zero Ready.
Kin
2 Bed ㆍ 1 Bath ㆍ 698 SQ FT.
Our most versatile layout — ideal for families, multigenerational living, or maximizing long-term value.
settings
Starting At
$164 K
Loft
2 Bed ㆍ 1 Bath ㆍ 787 SQ FT.
A complete home with extra room to grow — designed for full-time living, families, or long-term flexibility.
settings
Starting At
$180 K
Grange
2 Bed ㆍ 1 Bath ㆍ 672 SQ FT.
A balanced two-bedroom layout with indoor-outdoor connection — ideal for everyday living or hosting.
settings
Starting At
$166 K
Build Your In-Law Suite ADU Right. Book a 15-Minute Call.
Build Your In-Law 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 BirdNest in-law suite 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...
arrow_drop_down_circle
Divider Text
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.
arrow_drop_down_circle
Divider Text
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
arrow_drop_down_circle
Divider Text
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.
arrow_drop_down_circle
Divider Text
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.
arrow_drop_down_circle
Divider Text
Gerry & Hilde
Quantum Homeowner
arrow_drop_down_circle
Divider Text
Copyright Quantum Passivhaus © 2026