Third-Party Energy Testing & Building Performance Verification and commercial building commissioning
Built for Texas. Trusted by Builders and Project Teams.
Residential • Multifamily • Commercial
Energy Code Compliance, C402/C408, Building Enclosure Commissioning & Testing
IECC Compliance • ASTM Building Envelope Testing • EIFS Special Inspection • Building Commissioning • Commercial Energy Audits
Certified. Trusted. Recognized.
RESNET HERS • Rater BPI Building Professional • ABAA Field Auditor – Air Barrier Association of America • ASTM Building Envelope Testing • IBC Chapter 17 EIFS Special Inspector
Who We Work With
Trusted by Builders, Developers, and Design Teams
Lone Star Energy Efficiency partners with project teams across San Antonio, Austin, Boerne, and the surrounding Central Texas region to provide independent testing and performance verification.
We Work With
- Builders
- Owners
- Architects
- Developers
- General Contractors
- Envelope Consultants
- Project Managers
Unexpected Inspections and Testing Can Lead to Added Costs
Late-stage testing failures can lead to expensive fixes and additional labor.
Unplanned inspections may push back project closeouts and occupancy timelines.
Scrambling to meet unexpected requirements drains team efficiency and coordination.
Lack of early testing coordination can result in compliance issues and missed energy incentives.
High energy costs, comfort complaints, and warranty callbacks from skipping commissioning.
Last-minute fixes can disrupt schedules and increase labor expenses
Surprise testing pushes back closeouts and move-in dates.
Scrambling to meet unexpected requirements drains project efficiency.
Lack of coordination may lead to non-compliance and lost energy savings
Failed compliance can derail your schedule and increase project costs. Lone Star Energy Efficiency helps project teams plan ahead and meet testing requirements with confidence.
We’ve Been There—And We’re Here to Help You Get Ahead.
With over two decades of experience in construction and 15+ years of experience in energy efficiency, we started Lone Star to deliver reliable, certified testing, inspections, and commissioning for both residential and commercial builds across Texas. From single-family homes to mixed-use developments, our mission is the same: optimize buildings to be energy efficient for tomorrow’s generation—without complicating your build.
Our Partners
How We Make Energy Testing Simple
A clear, streamlined process for energy code compliance, building performance testing, and commissioning—see how it works on each service page.
Project Experience
The Results You Can Count On
When you work with Lone Star, you’re choosing a partner who cares as much about your success as you do. We’re committed to helping you save money, meet the highest standards, and create a greener Texas for future generations.
Why Project Teams Choose Lone Star:
The Results You Can Count On
When you work with Lone Star, you’re choosing a partner who cares as much about your success as you do. We’re committed to helping you save money, meet the highest standards, and create a greener Texas for future generations.
Why Project Teams Choose Lone Star
What Our Clients Say
Ready to get started?
Projects We Support
Energy testing and IECC compliance for production and custom home builders.
Blower door testing, duct testing, and building envelope verification for apartments and mixed-use developments.
ASTM envelope testing, EIFS inspection, performance verification, and building commissioning for commercial construction projects.
Need fast, reliable energy testing? We’ve got you covered. Book a consult, and we’ll handle the rest.
“We founded Lone Star because Texas builders and homeowners deserve energy testing they can count on. From San Antonio to Austin, our mission is simple: make every project efficient, compliant, and ready for a brighter tomorrow.”
Brittany & Clay Paul
Founders, Partners, and Your Trusted Experts
At the heart of Lone Star Energy Efficiency are Brittany and Clay Paul—a husband-and-wife team committed to making your building experience smoother, smarter, and more energy-efficient.
Clay brings over 20 years in construction and 14 years in energy efficiency, having audited thousands of homes and led major programs for the largest municipally owned utility in the nation. He’s a credentialed commissioning authority (CxA+BE, BECxP), and his deep technical expertise ensures every project is approached with precision and care.
Brittany keeps your experience seamless and stress-free, leading operations with clear communication, professional service, and an unwavering commitment to client success.
Together, they bring the perfect balance of expertise and support—so you can build with confidence.