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Builder Resources

Everything you need to navigate BC Energy Step Code compliance. Guides, tools, rebate info, and municipality-specific resources.

Step Code Fundamentals

ACH50 Airtightness Targets for Every Step of BC's Energy Step Code

ACH50 targets by Step level, how blower door testing works, common failure points, and what it takes to reliably hit 1.5 ACH50 or better for Step Code 4 compliance.

BC Step Code 4: What Builders Need to Know Before 2027

Step Code 4 requires airtightness of 1.5 ACH50 or less. Here is what changes from Step 3, what it costs, how to hit your targets, and how to unlock up to $15,000 in FortisBC rebates.

Step Code 4 Is Coming January 2027. Here's What Changes for Okanagan Builds.

Step Code 4 expected January 2027. ACH drops from 2.5 to 1.5, heat pumps required, FortisBC rebates up to $15K. What Okanagan builders need to do in the next 9 months.

Builder's Checklist for Step Code 4 Compliance: Phase by Phase

A phase-by-phase checklist for BC builders preparing for Step Code 4. From pre-construction planning through final testing, every decision point covered for 1.5 ACH50 compliance.

What ACH50 Target Do You Need for BC Step Code 3, 4, or 5?

ACH50 targets explained for BC Step Code 3 (2.5), 4 (1.5), and 5 (1.0). What each number means, how it's tested, what it costs to hit, and which target your project actually needs.

BC Zero Carbon Step Code: What Builders Need to Know About Emission Levels

BC Zero Carbon Step Code explained. Emission levels EL-1 through EL-4, fossil fuel phase-out, and how it affects Part 9 builders.

Air Sealing & Compliance

AeroBarrier Case Studies: ACH50 Results from 100+ Okanagan Seals

Real airtightness data from 100+ AeroBarrier residential seals across BC's Interior. Best result 0.24 ACH50. Project profiles from Kelowna, Vernon, Lytton First Nation rebuild, and hillside builds.

AeroBarrier Okanagan: Authorized Dealer Serving the Valley

Okanagan's authorized AeroBarrier dealer. Kelowna, West Kelowna, Vernon, Penticton, Lake Country, and beyond. 100+ verified residential seals, 0.24 ACH50 best.

AeroBarrier vs Traditional Air Sealing: Complete Comparison for BC Builders

Compare AeroBarrier to caulking, tape, and spray foam. Cost, time, reliability, achievable ACH50 (typical 0.5-1.5 vs 2.0-3.5), and Step Code 4 hit rates from 100+ Okanagan seals.

Air Sealing Checklist for BC Step Code Compliance

Phase-by-phase air sealing checklist for BC Step Code builds. Foundation, framing, windows, penetrations, attic, pre-drywall inspection. Miss nothing.

Air Sealing Methods Compared: Caulking, Tape, Spray Foam, and Aerosol Sealing

Side-by-side comparison of air sealing methods for BC Step Code compliance. Costs, time, reliability, and achievable ACH50 results for caulking, taping, spray foam, and AeroBarrier aerosol sealing.

The 10 Most Common Air Leaks in BC Homes and How to Seal Them

Where air leaks happen in new BC homes. Rim joists, penetrations, rough openings, and more. Traditional and aerosol sealing methods.

How to Achieve 1.5 ACH50 in Wood Frame Construction in the Okanagan

Step-by-step guide to hitting 1.5 ACH50 on Okanagan wood-frame builds. Air barrier strategy, sealing sequence, pre-drywall test, and the practical path to Step Code 4 compliance.

One-Day Air Sealing: How AeroBarrier Works on a BC Builder's Job Site

Hour-by-hour walk-through of an AeroBarrier seal day: setup, blower door pressurization, aerosol application, real-time ACH50 monitoring, and final verification. What BC builders should expect.

Pre-Drywall Air Sealing: Why Mid-Construction Testing Changes Everything

Why testing before drywall is the most important step in your air sealing strategy. What to seal, when to test, common leakage paths, and how mid-construction testing saves time and money on Step Code compliance.

Cost & Rebates

How Much Does AeroBarrier Cost in BC?

AeroBarrier pricing in BC explained: cost ranges by home size, factors that move the price, ROI from rebates and energy savings, and how it compares to traditional sealing.

The Real Cost of Step Code Compliance: Step 3 vs Step 4 vs Step 5

Detailed cost breakdown of BC Energy Step Code compliance for Part 9 residential builders. Incremental costs per step level, what drives the premium, FortisBC rebates, and ROI analysis.

Cost Comparison: Failed Blower Door Remediation vs AeroBarrier on a Kelowna Build

Real cost breakdown: what a failed Step Code blower door test costs to fix vs what AeroBarrier costs upfront. Decision math for Kelowna builders pricing Step 4 risk.

Complete Guide to BC Step Code Rebates (2026)

BC Step Code rebates explained: FortisBC, BC Hydro, CleanBC, municipal programs. How to stack rebates up to $20,000+ per home. Current for 2026.

Building Envelope

Wall Assemblies for BC Step Code: R-Values, Thermal Bridging, and What Actually Works

Common wall assemblies for Step Code 4 and 5 in BC. R-value targets, thermal bridging, vapor barriers, and how walls interact with ACH.

HVAC & Mechanical

HVAC Systems for Step Code Compliance: Heat Pumps, HRVs, and Right-Sizing

HVAC guide for BC Step Code builders. Heat pumps vs gas, HRV requirements, right-sizing for tight envelopes, and combo systems.

Compliance & Process

Working with an Energy Advisor in BC: What Builders Need to Know

How energy advisors support Step Code compliance in BC. HOT2000 modelling, costs, timing, and how to find a qualified EA for your project.

Policy & Timeline

BC Energy Step Code Timeline: 2017 to 2027 and Beyond

Complete BC Step Code timeline from 2017 voluntary adoption to expected 2027 Step 4 mandate. Key dates for project planning.

Testing & Compliance

Blower Door Test Explained: What BC Builders Need to Know

Blower door test explained for BC builders. How the test works, ACH50 and CFM50 meaning, pre-drywall vs final test, prep steps, and what happens if you fail.

Blower Door Testing for BC Builders: How It Works and How to Prepare

A practical guide to blower door testing for BC Step Code compliance. How the test works, what equipment is used, how to prepare your build, common mistakes, and what to do if you fail.

Failed Your Blower Door Test? Here's What to Do Next

Failed a BC blower door test? Emergency air sealing, AeroBarrier rescue, and how to get your occupancy permit without tearing open finished drywall.

Technical

How to Achieve Step Code 4 and 5: The Air Sealing Method That Works

Step 4 requires 1.5 ACH50. Step 5 requires 1.0. Here's what typical results look like by method, and why aerosol sealing is the most reliable path to compliance.

BC Step Code Guide: The Builder's Resource for Energy Step Code Compliance

Everything BC builders need to know about the Energy Step Code. Requirements by Step level, ACH50 targets, air sealing methods, FortisBC rebates up to $20,000, and municipality-specific guides.

Rebates & Financial

FortisBC New Home Program Rebates: Up to $20,000 for Step Code 4 and 5

Complete guide to FortisBC rebates for new home construction. Step 4 homes qualify for up to $15,000, Step 5 up to $20,000. Eligibility, mechanical system requirements, and how to apply.

Step Code Levels

BC Step Code 3: Requirements, Wall Assemblies & Cost Breakdown

Full guide to BC Energy Step Code 3 for Part 9 builders. 2.5 ACH50 target, R-22+R-7.5 walls, U-1.4 windows, common failure modes, cost premium 1-3%, and FortisBC rebates.

BC Step Code 5: Net-Zero Ready, Walls, Mechanicals & $20K Rebate

Step Code 5 is BC's near-Passive-House tier. 1.0 ACH50 airtightness, R-30+ walls, triple-pane U-0.8 windows, 80%+ HRV, $20K FortisBC rebate, and 8-15% cost premium.

Municipality Guides

Armstrong Step Code

Step Code 3 in City of Armstrong. CZ5 North Okanagan climate, Spallumcheen Township boundary, agricultural and rancher build patterns, and FortisBC rebate stack up to $20,000.

Big White Step Code & AeroBarrier Air Sealing

Big White BC Step Code requirements and AeroBarrier air sealing services. ACH50 targets, blower door testing, FortisBC rebates, and compliance guidance for builders.

Burnaby Step Code

Step Code 3 + Zero Carbon EL-4 in Burnaby since Jan 1, 2025. Effective fossil fuel ban for new builds, heat pump requirement, BC Hydro rebate paths, and Metro Vancouver context.

Coldstream Step Code

Step Code 3 in District of Coldstream. CZ5 climate, Kalamalka Lake context, large-lot rural-residential builds, RDNO coordination, and FortisBC rebate stack up to $20,000.

Enderby Step Code & AeroBarrier Air Sealing

Enderby BC Step Code requirements and AeroBarrier air sealing services. ACH50 targets, blower door testing, FortisBC rebates, and compliance guidance for builders.

Kamloops Step Code

Step Code 3 in Kamloops since 2022. CZ5 with semi-arid climate, hot summers driving cooling load, Sun Peaks elevation, vapor strategy considerations, and rebate stack up to $20,000.

Kelowna BC Step Code

Step Code 3 requirements for Kelowna builders. HDD 3,715, 2.5 ACH50 target, $325 mid-construction rebate, FortisBC stack up to $20,000, and common compliance gaps.

Lake Country Step Code

Step Code 3 in District of Lake Country. Bylaw 1070 permit fee rebates for Step 3/4/5, four distinct wards, hillside walkout considerations, and rebate stack up to $20,000.

Langford

BC Energy Step Code requirements for builders in Langford. Step 3 compliance, CZ4 climate context, high-volume construction tips, and permit info.

Lumby Step Code

Step Code 3 in Village of Lumby. Monashee corridor cold-air drainage, custom rural homes with wood stoves, RDNO boundary considerations, and FortisBC rebate stack up to $20,000.

Merritt Step Code & AeroBarrier Air Sealing

Merritt BC Step Code requirements and AeroBarrier air sealing services. ACH50 targets, blower door testing, Nicola Valley climate context, and FortisBC rebate info.

Nanaimo

BC Energy Step Code requirements for builders in Nanaimo. Step 3 compliance, CZ4 climate context, air sealing targets, and permit resources.

North Vancouver

BC Energy Step Code requirements for builders in North Vancouver District. Early Step Code adopter, CZ4 climate, air sealing targets, and permit info.

Oliver Step Code & AeroBarrier Air Sealing

Oliver BC Step Code requirements and AeroBarrier air sealing services. ACH50 targets, blower door testing, FortisBC rebates, and compliance guidance for builders.

Osoyoos Step Code & AeroBarrier Air Sealing

Osoyoos BC Step Code requirements and AeroBarrier air sealing services. ACH50 targets, blower door testing, FortisBC rebates, and compliance guidance for builders.

Peachland Step Code & AeroBarrier Air Sealing

Peachland BC Step Code requirements and AeroBarrier air sealing services. ACH50 targets, blower door testing, FortisBC rebates, and compliance guidance for builders.

Penticton Step Code

Step Code 3 in Penticton. CZ5 climate, Skaha vs Okanagan Lake micro-climates, City Yards permit process, and FortisBC rebate stack up to $20,000 for Step 4 and 5 projects.

Revelstoke Step Code

Step Code 3 in Revelstoke. Climate Zone 6 with ~4,500 HDD, snow loads, ski-chalet construction patterns, City building permit process, and rebate stack up to $20,000.

Salmon Arm Step Code & AeroBarrier Air Sealing

Salmon Arm BC Step Code requirements and AeroBarrier air sealing. ACH50 targets, blower door testing, Shuswap climate context, and FortisBC rebate guidance for builders.

Squamish

BC Energy Step Code requirements for builders in Squamish. Step 3 compliance, CZ4 mountain climate context, air sealing targets, and permit info.

Summerland Step Code & AeroBarrier Air Sealing

Summerland BC Step Code requirements and AeroBarrier air sealing services. ACH50 targets, blower door testing, FortisBC rebates, and compliance guidance for builders.

Surrey BC Step Code

Step Code 3 + Zero Carbon EL-1 in Surrey. Mandatory mid-construction blower door test at 4.0 ACH, Building Bylaw 17850, Metro Vancouver context, and rebate stack up to $20,000.

Vancouver Step Code Requirements for Builders

City of Vancouver and Metro Vancouver Energy Step Code requirements for Part 9 residential buildings. VBBL requirements, Zero Emissions Building Plan, airtightness targets, and local incentives.

Vernon BC Step Code

Step Code 3 in Vernon. Cold-end CZ5 with ~3,900 HDD, Silver Star and Predator Ridge elevation considerations, Building Permit office process, and rebate stack up to $20,000.

Victoria

BC Energy Step Code requirements for builders in Victoria. VBBL Step 3+ requirements, CZ4 climate advantages, air sealing targets, and permit resources.

West Kelowna Step Code

Step Code 3 requirements for West Kelowna. Glenrosa elevation, wildland-urban interface considerations, McDougall Creek rebuild context, and rebate stack up to $20,000.

Whistler Step Code

Step 4 in Whistler since Jan 1, 2024. Climate Zone 6 with 4,650 HDD, deep snow loads, Strong Carbon Performance now advancing to EL-4 in 2026, and rebate stack.

Services

AeroBarrier Air Sealing

Aerosol air sealing that reliably hits your ACH50 target. 100+ verified seals.

Blower Door Testing

Pre-drywall and final blower door testing for BC residential projects.

Step Code Compliance Support

Planning, strategy, and field support for Step Code compliance.

Commercial Air Sealing

Part 3 building envelope sealing for multi-unit, office, and institutional buildings.

Retrofit Air Sealing

AeroBarrier air sealing for existing homes. Lower bills and better comfort.

Tools

Rebate Calculator

Estimate your FortisBC, BC Hydro, and CleanBC rebates based on step level, build type, and region.