For Builders & Developers

Build right the first time. Test before it's a callback

New construction moisture testing, duct and blower door testing, PRV clearance, and LEED v4.1 IAQ support. ESG integrates into your build schedule without slowing progress, and gives you documentation built to stand up to scrutiny.

Schedule Construction Testing Call 336-373-1538

LEED v4.1 IAQ qualified New construction specialists No remediation conflict Serving NC, VA & TN

ESG field technicians carrying testing equipment on an active North Carolina construction site

What builders rely on ESG to deliver

23+

Years independent, since 2002

LEED

v4.1 IAQ testing & documentation support

Key construction phase checkpoints we cover

A+

BBB rating, accredited business

Building a LEED-certified project? ESG provides the IAQ flush-out and construction testing documentation required for LEED v4.1 EQ credits, coordinated around your punch list and occupancy schedule.

Where we fit in your project

Testing that works around your timeline

ESG testing milestones are designed to integrate into the construction schedule, not disrupt it. Here are the most common situations we handle for builders.

Framing and insulation going in

Pre-drywall moisture testing catches elevated readings before they're locked behind walls. A single moisture issue discovered at this stage costs far less than a warranty callback after occupancy.

Pursuing LEED certification

ESG provides the construction IAQ testing, flush-out documentation, and pre-occupancy air quality sampling required for LEED v4.1 Indoor Environmental Quality (EQ) credits.

Duct system installed and ready for mechanical testing

Blower door and duct leakage testing verifies the building envelope and mechanical system perform to spec before drywall or final finishes. Catch failures before they're buried.

Services for builders & developers

Every test, every phase of construction

From foundation to final walkthrough, ESG has the testing services that protect your warranty, satisfy your code official, and support your LEED documentation package.

New Construction Moisture & Mold Prevention Testing

Pre-drywall moisture readings across framing, subfloor, and sheathing. Catch elevated moisture before it's sealed in, before mold growth, structural damage, or a warranty claim can develop.

Learn about construction moisture testing

Blower Door & Duct Leakage Testing

Building envelope air tightness and duct system leakage testing per ASHRAE and RESNET standards. Required for many energy codes and LEED projects, and essential to confirming mechanical system performance.

Learn about blower door testing

LEED v4.1 Indoor Air Quality Testing

Pre-occupancy air quality sampling, construction IAQ management plan support, and flush-out documentation for LEED v4.1 EQ credits. Reports formatted for submission to the GBCI.

Learn about LEED IAQ testing

Post-Remediation Verification (PRV)

When moisture or mold is discovered and remediated during construction, ESG's independent PRV clearance confirms the issue was resolved before the work is enclosed. Protects you and your buyers.

Learn about PRV

Why ESG

Testing that keeps pace with construction, not the other way around

Builders need environmental testing that fits the schedule, not a firm that causes delays. ESG coordinates directly with your superintendents and project managers to hit the right windows (pre-drywall, rough mechanical, and pre-occupancy) without holding up your trades.

Every report is peer-reviewed by two certified professionals, with documentation built to stand up to scrutiny. And because we never perform remediation, there's no conflict of interest. If we find a problem, it's because there is one, not because we want to sell you a remediation contract.

Schedule Construction Testing

2002

Founded, 23+ years of independent testing

LEED

v4.1 IAQ testing formatted for GBCI submission

Remediation services, no conflict of interest

NC, VA & TN

States we serve

The process

Testing milestones that fit your schedule

ESG's construction testing follows the natural phases of the build, so testing happens at the right time without disrupting your trades or timeline.

Pre-drywall moisture check

We test framing, sheathing, and subfloor moisture levels before walls are closed. Any elevated readings are documented and flagged before they become a future warranty issue.

Rough mechanical & envelope testing

Blower door and duct leakage testing after mechanical rough-in confirms system performance to code and LEED requirements before finishes are applied.

Pre-occupancy IAQ sampling

Final air quality sampling confirms the completed building meets indoor air quality standards before keys are handed to the buyer or tenant. Required for LEED EQ credits.

Documentation package delivered

All testing reports, lab results, and LEED-formatted documentation delivered in a single package, ready for code official review, GBCI submission, or buyer disclosure.

The cost of skipping testing

Tested build vs. untested build

With ESG construction testing

Problems are caught at the cheapest possible moment: during construction, before walls are closed and finishes are applied. Your documentation package protects you from future warranty claims.

Moisture issues caught before drywall goes up
LEED credits documented and submission-ready
Defensible warranty documentation on file
Mechanical system confirmed to perform to spec

Without construction testing

Moisture issues, duct leakage, and IAQ problems discovered after occupancy cost multiples more to address, and expose you to warranty claims, litigation, and reputational damage.

Mold behind walls discovered after move-in
LEED credits unavailable without testing records
Costly warranty remediation and callbacks
No documentation to defend against claims

Common questions

Builder & developer FAQs

When in the construction schedule should I bring in ESG?

The most valuable windows are pre-drywall (framing moisture check), after rough mechanical (blower door and duct testing), and pre-occupancy (final IAQ sampling). Contact us early to plan testing milestones into your schedule, not around it.

What does a blower door test actually measure?

A blower door test measures the airtightness of the building envelope by depressurizing the structure and measuring airflow. Duct leakage testing checks how much conditioned air is lost through duct system leaks. Both are required for many energy codes and LEED projects.

What does ESG deliver for LEED IAQ credits?

We provide pre-occupancy IAQ test results, construction IAQ management plan documentation, and flush-out verification formatted for GBCI submission. We're familiar with LEED v4.1 EQ prerequisites and credit requirements and can help you understand what testing is needed for your project.

Can ESG handle testing across multiple active job sites?

Yes. We regularly work with builders who have multiple projects at various stages. Coordinating across sites with your superintendents is standard practice for us. Contact us to discuss your project pipeline.

What happens if moisture or mold is found during construction?

We document the findings and provide clear guidance on what type of remediation or drying is required. After remediation, we perform independent PRV testing to confirm the issue is resolved before the work is enclosed. Our findings are honest; there's no incentive for us to inflate or minimize a problem.

Do you serve both residential and commercial construction?

Yes. ESG serves single-family residential, multifamily, light commercial, and institutional construction projects across NC, VA, and TN. Service scope and testing protocols vary by project type. Call us to discuss your specific project.

Ready to get started?