Net Zero Homes
Net Zero Home Builder in Ontario
Starlit Homes is a CHBA Net Zero Certified Builder in London, Ontario. Every home is blower-door tested against a guaranteed airtightness standard.
The Credential
Certified by the CHBA.
Tested on Every Home.
Starlit Homes is a Net Zero home builder certified through the Canadian Home Builders' Association, based in London, Ontario and serving communities within roughly 100 km of the city. The CHBA credential requires completed Net Zero construction training and homes labelled through the CHBA program, with performance verified by a licensed energy advisor rather than the builder's own say-so.
We hold ourselves to a tighter bar than the label requires. Every home we build is blower-door tested: we guarantee 1.5 ACH50 or better on every home, and our portfolio average is 0.85. That average holds across 24+ projects and more than 68,000 sq ft of completed construction.
If you want the full technical picture before talking to anyone, our 2026 building science guide covers the envelope, mechanicals, and standards in depth.
The Definition
What a Net Zero Home Is
A Net Zero home produces as much energy in a year as it consumes. The envelope holds heat, the mechanical systems are sized to that reduced load, and a renewable system (usually rooftop solar) covers the remaining annual demand.
A Net Zero Ready home is the same house without the panels. The envelope, mechanical systems, conduit, and roof structure are all designed for solar from day one, so the array can be added later without opening up walls or re-engineering anything. The order matters: efficiency first, generation second. Panels bolted onto a leaky house just subsidize the leaks.
The Build Standard
How We Build to Net Zero
Envelope first. Every system below comes standard on every Starlit home — not as an upgrade package.
Continuous Insulation
An uninterrupted exterior layer brings walls to R-30+ effective, eliminating the thermal bridges that drain conventional framing.
Triple-Glazed Windows
Standard on every home — warmer interior glass surfaces, less condensation, and a quieter house.
Verified Airtightness
We guarantee 1.5 ACH50 or better on every home. Our portfolio average is 0.85. Every result comes from a blower-door test, not an estimate.
ERV with MERV-13
Balanced fresh air around the clock, filtered to MERV-13, with heat recovered from outgoing air.
Hybrid Heat Pump
A heat pump carries the reduced load most of the year; a gas furnace backs it up through the coldest snaps.
Solar-Ready Design
Roof structure and conduit planned for a future array, so adding panels never means retrofitting.
The Money
What Does a Net Zero Home Cost?
The premium is smaller than most people assume. Industry estimates generally put the cost of a high-performance envelope and mechanicals in the single digits as a percentage of total build cost, and much of that gap comes back through lower operating bills over the years you own the home.
For overall context, custom builds in Southwestern Ontario typically land somewhere between $250 and $500+ per square foot depending on size, lot, and specification. Those are market ranges to verify against your own plans, not Starlit pricing; we quote each project from actual drawings. We published a full breakdown in our guide to the cost to build a house in Ontario.
The Fit
Who Builds Net Zero With Us
Three paths into the same build standard. The envelope never changes; the project around it does.
Your Lot
Custom Builds
Design-build on your own land anywhere in the London region, from schematic design through the final blower-door test.
ExploreOur Community
Ausable Bluffs
Twelve floor plans in Ailsa Craig, every one built to the same envelope standard on premium village lots.
ExploreUltra-Luxury
Zenith Bespoke
Net Zero estates from $1.5M for clients who want the performance standard at an architectural scale.
ExploreQuestions
Net Zero, Answered
Get Started
Build to a Number, Not a Promise
Sit down with our team, walk through your plans, and see exactly what the Net Zero standard means for your project.
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