Side exterior of the Sweetflag passive prefab house with cedar shingle gable, lap siding and a wood deck with Adirondack chairs at golden hour Side exterior of the Sweetflag passive prefab house with cedar shingle gable, lap siding and a wood deck with Adirondack chairs at golden hour
NEW FOR 2026!

SWEETFLAG

A compact two-story passive prefab house designed for efficient everyday living. Built with PHI-certified panels and an advanced energy efficient building envelope, the Sweetflag delivers exceptional comfort, healthier indoor air, and lower operating costs.
GROSS AREA
2,100
SQ FT
LIVING AREA
1,577
SQ FT
BEDROOM
3
BATHROOM
2
Net Zero Ready label applies to Complete Turnkey builds only. Essentials packages are engineered to the same performance standard.
Front exterior of the Sweetflag net zero home with grey lap siding, cedar shingle gable and covered entry in a wooded lot Front exterior of the Sweetflag net zero home with grey lap siding, cedar shingle gable and covered entry in a wooded lot
Rear exterior of the Sweetflag passive prefab house with a wood deck, Adirondack chairs and forest backdrop Rear exterior of the Sweetflag passive prefab house with a wood deck, Adirondack chairs and forest backdrop
Side view of the Sweetflag prefab home with grey siding and dark gable end overlooking a wooded lakeside lot Side view of the Sweetflag prefab home with grey siding and dark gable end overlooking a wooded lakeside lot
 FLOOR PLAN 

Sweetflag Passive House Floor Plan​​​​​​​ 

The Sweetflag passive house design features a practical two-story layout with 1,577 square feet of living space, three bedrooms, two bathrooms, and flexible work-from-home areas. Designed to support modern living, this passive prefab house combines open-concept gathering spaces with private retreats while maintaining exceptional energy performance and year-round comfort.
First Floor
Floor Plan — First Floor
Second Floor
Floor Plan — Second Floor
See Second Floor
Floor plan — full size
See First Floor
First Floor
 Passive House Floor Plan Specifications​​​​​​​ 
First Floor
Living / Dining 322 SF
Den 134 SF
Kitchen 129 SF
Entry 72 SF
Bath 63 SF
Pantry 12 SF
Closet 7 SF
Second Floor
Primary Bedroom 154 SF
Bedroom II 138 SF
Bedroom III 131 SF
Bath 78 SF
Hall 75 SF
Utility 65 SF
Reading Nook 48 SF
Closets 26 SF
 
 If the Sweetflag passive house design feels like the right fit for your lifestyle and project goals, schedule a quick 15-minute consultation to review the floor plan, discuss site requirements, and answer any questions about the building process.
 
  Takes 30 seconds • No commitment​​​​​​​  
Open kitchen and dining area in the Sweetflag net zero home with marble island, open shelving and large windows Open kitchen and dining area in the Sweetflag net zero home with marble island, open shelving and large windows
Living and dining room in the Sweetflag passive prefab house with sectional sofa, wood dining table and natural light Living and dining room in the Sweetflag passive prefab house with sectional sofa, wood dining table and natural light
Home office in the Sweetflag prefab home with a wood desk, open shelving and a bright window view Home office in the Sweetflag prefab home with a wood desk, open shelving and a bright window view
 SWEETFLAG 

Passive House Design Features Built for Everyday Living​​​​​​​

Dedicated Space to Work or Create
 A private main-floor den provides the flexibility for a home office, studio, guest room, or quiet retreat while supporting the adaptable lifestyle modern homeowners need.​​​​​​​ 
Open Living, Easy Entertaining​​​​​​​ 
 The bright open-concept kitchen, dining, and living area creates a natural gathering place where cooking, conversation, and family life flow together with ease.​​​​​​​ 
 Private Bedrooms, Peaceful Evenings​​​​​​​ 
 With all three bedrooms located upstairs, the layout creates a clear separation between active living spaces and quiet personal retreats for greater comfort and privacy.​​​​​​​ 
Comfort That Costs Less to Own​​​​​​​ 
 An advanced energy efficient building envelope and high-performance construction help maintain consistent indoor temperatures, improve comfort, and reduce long-term energy consumption.​​​​​​​ 
 OVERVIEW 

Ready to See if Sweetflag Is the Right Passive House Design for Your Lifestyle? 

 A 15-minute consultation gives you the opportunity to review the floor plan, discuss your site requirements, and learn how the Sweetflag combines passive house design principles with exceptional comfort, efficiency, and long-term value.​​​​​​​ 
Takes 30 seconds • No commitment
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Book a 15-Minute Introductory Call ​​​​​​​
Side exterior of the Sweetflag passive prefab house with cedar shingle gable, lap siding and a wood deck with Adirondack chairs at sunset Side exterior of the Sweetflag passive prefab house with cedar shingle gable, lap siding and a wood deck with Adirondack chairs at sunset
 PICK YOUR STARTING POINT​​​​​​​ 

 Choose the Sweetflag Package That Fits Your Project​​​​​​​ 

Every Sweetflag package is built on the same PHI-certified panels and advanced energy efficient building envelope. The difference is how much of the project you want Quantum to manage—from a completed superstructure to a fully finished home.
 30-day superstructure delivery​​​​​​​ 

Essentials Package

Quantum manufactures, delivers, and installs the complete high-performance building envelope. You take it from there, with a durable, precision-built structure ready for your preferred trades and finishing team.
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 QUANTUM PROVIDES: 
 PHI-certified panels delivered + installed​​​​​​​ 
Foundation + slab​​​​​​​ (no geo-tech, no site survey)
 Complete high-performance thermal envelope​​​​​​​ 
High performance/energy star windows and doors
 Blower door test + airtightness sign-off​​​​​​​ 
 Thorough completion report​​​​​​​ 
QC quality assurance checklist
Wall care guide for your trades
Passive prefab house under construction showing the airtight building envelope with rainscreen strapping and taped membrane Passive prefab house under construction showing the airtight building envelope with rainscreen strapping and taped membrane
 Most hands-off​​​​​​​ 

Complete Turnkey

Quantum manages every stage of the project—from planning and permits to final walkthrough—delivering a completed home built around the same high-performance standards and energy-efficient design principles as every Sweetflag package.
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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​​​​​​​ 
High performance/energy star windows and doors
 Complete interior finishes — drywall, flooring, paint, trim​​​​​​​ 
 Cabinetry, countertops + fixtures throughout​​​​​​​ 
 Every trade coordinated by Quantum​​​​​​​ 
 Final walkthrough + handover​​​​​​​ 
Finished net zero ready bungalow with blue-grey siding, cedar shingle gable, covered porch and flower garden Finished net zero ready bungalow with blue-grey siding, cedar shingle gable, covered porch and flower garden

 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.

Takes 30 seconds • No commitment
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High-Performance Features Included in Every Sweetflag Passive House Design 

Every Sweetflag home is built around an advanced energy efficient building envelope designed to improve comfort, reduce energy consumption, and support high-performance living in a wide range of climates.

 This Model Includes: 

Cutaway of a Duxton triple-pane fiberglass window used in the high-performance building envelope of a passive prefab house Cutaway of a Duxton triple-pane fiberglass window used in the high-performance building envelope of a passive prefab house
Duxton Triple-Pane Windows
No drafts. No cold spots. Quiet, stable interiors.
PHI-tested triple-pane fiberglass windows engineered to support high-performance building envelopes and year-round comfort.
Person stepping onto warm in-floor heated ceramic bathroom tile in a net zero ready home Person stepping onto warm in-floor heated ceramic bathroom tile in a net zero ready home
In-Floor Heated Bathroom Tile
Warm floors first step out of the shower. Every morning.
Electric in-floor heating beneath ceramic tile, adding everyday comfort exactly where you notice it most.
Homeowner holding a low energy bill from an all-electric net zero ready home with no propane or gas Homeowner holding a low energy bill from an all-electric net zero ready home with no propane or gas
All-Electric. One Bill.
No propane. No gas. No split systems.
Electric heating, cooling, and hot water systems designed to support energy-efficient living and lower operating costs.
Heat recovery ventilator (HRV) unit that supplies filtered fresh air in a passive prefab house Heat recovery ventilator (HRV) unit that supplies filtered fresh air in a passive prefab house
ERV — Energy Recovery Ventilator
Fresh air. No heat loss.
Continuous fresh air exchange with heat recovery helps maintain indoor air quality while supporting high-performance building operation.
Wall-mounted ductless mini-split heat pump providing efficient heating and cooling in a net zero home Wall-mounted ductless mini-split heat pump providing efficient heating and cooling in a net zero home
Ductless Mini-Split Heat Pump
No furnace. No ductwork. No propane. Ever.
A high-efficiency heat pump delivers year-round comfort while reducing energy consumption and supporting all-electric home performance.
Passive House Institute Certified Component badge on the panel wall system of a passive prefab house under construction Passive House Institute Certified Component badge on the panel wall system of a passive prefab house under construction
PHI-Certified Cold-Climate Panels
PHI-certified cold-climate panels. Proven. Built to perform.
Third-party verified cold-climate panels designed to support an advanced energy efficient building envelope, improved thermal performance, and long-term durability.

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 

Premium Finishes Included with Every Sweetflag Home​​​​​​​  

Every Sweetflag home combines high-performance building systems with durable, low-maintenance finishes selected for long-term comfort, energy-efficient living, and everyday functionality.
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.
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.

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Download Our Quantum Trim Line Guide​​​​​​​
 FIND YOUR HOME​​​​​​​ 

Let's Talk About Your Future Passive House Design

Tell us about your project and we'll help you explore floor plans, package options, pricing, and the next steps for bringing your Sweetflag passive house design to life.
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Tell us about your project
 Share a few details about your property, goals, timeline, and vision. We'll help you determine whether the Sweetflag passive house design is the right fit for your project.​​​​​​​ 
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Get answers from our team
We'll help determine whether the Sweetflag floor plan aligns with your lifestyle, goals, and budget.
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Move forward with confidence
 No pressure. Just expert guidance and clear next steps.​​​​​​​ 
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 You’re not committing to anything — just getting clarity on what fits your property.
We’ll review your details and help you understand your options.​​​​​​​
 
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Designed for North American Climates​​​​​​​ 

 Built using Quantum's certified Passive House panel systems and advanced building science principles, the Sweetflag delivers exceptional comfort, healthier indoor air, and predictable performance throughout the year. 
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Superior indoor comfort
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Lower operating costs
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Healthier indoor air quality
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Built for cold, mixed, and demanding climates
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Engineered for long-term durability
Open-plan kitchen, dining and living area in the Sweetflag passive prefab house with wood cabinets, white island and large windows Open-plan kitchen, dining and living area in the Sweetflag passive prefab house with wood cabinets, white island and large windows
Two-storey foyer in the Sweetflag net zero home with a wood staircase, open loft railing and view to the dining and living area Two-storey foyer in the Sweetflag net zero home with a wood staircase, open loft railing and view to the dining and living area
Kitchen detail in the Sweetflag net zero home with wood cabinets, patterned tile backsplash and stainless range Kitchen detail in the Sweetflag net zero home with wood cabinets, patterned tile backsplash and stainless range
Kitchen in the Sweetflag passive prefab house with a marble-top island, bar seating, white and wood cabinets and mosaic backsplash Kitchen in the Sweetflag passive prefab house with a marble-top island, bar seating, white and wood cabinets and mosaic backsplash
OTHER HOMES PEOPLE ARE EXPLORING

Similar Homes Worth Comparing​​​​​​​

If you're looking at a home around 1577 sq ft, these models are worth a look. All built with PHI-certified panels and delivered Net Zero Ready.
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 Build It Better. 

​​​​​​​Book Your Introductory Call.

Free 15-minute consultation. No commitment. A straightforward conversation about your property, your goals, and whether the Sweetflag passive house design is the right fit for your project.
Takes 30 seconds • No commitment
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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

QuantumPassivhaus.com

 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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