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Certified Energy Testing & Code Compliance Experts for San Antonio & New Braunfels Multifamily Builders

Large residential projects come with plenty of moving parts. Lone Star Energy Efficiency is here to make sure energy compliance isn’t one of them. From pre-construction modeling to final testing, we deliver dependable services that keep your timelines intact.

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Rows Of New Townhomes

Supporting Complex Projects with Confidence

Whether you’re building apartments, townhomes, or mixed-use spaces, you can count on our team to guide you through each step. We’ve worked on multifamily developments across Central Texas, helping builders avoid costly rework and secure approvals without last-minute surprises. You can count on us for responsive scheduling, detailed reports, and personal service every step of the way.

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Areas We Serve in San Antonio and New Braunfels

Proudly serving multifamily developments in:

North San Antonio
  • The Heights at Stone Oak
  • Encino Ranch
  • Redland Woods
  • Far North Central
  • Shavano Heights
  • Castle Hills Forest
  • Bluffview at Camino Real
  • Oak Park / Northwood
  • Greater Harmony Hills
  • Dellview
  • Babcock North
  • Braun Station
  • Steubing Ranch
  • Indian Hills
  • Ingram Hills
  • Woodlands of Camino Real
  • River Rock Ranch
  • Hills and Dales
  • Downtown
  • St. Mary’s Strip
  • St. Mary’s Gateway District
  • Tobin Hill
  • Monte Vista Historic District
  • Mahncke Park
  • Olmos Park Terrace
  • Fort Sam Houston
  • La Villita
  • St. Paul Square
  • Dignowity Hill
  • Denver Heights
  • Healy-Murphy
  • Eastside Promise Neighborhood
  • East Terrell Hills
  • Terrell Heights
  • Loma Park
  • Woodlawn Lake
  • Woodlawn Hills
  • Quail Creek
  • South San Antonio
  • Misson del Lago
  • Harlandale
  • Brooks City Base
  • Bergs Mill
  • Solana Ridge
  • Meadow Village
  • Crown Meadows
  • Lackland Terrace
  • Lackland AFB
  • Dellcrest Forrest
  • Gruene
  • Loma Verde
  • Pecan Crossing
  • Mission Hills Ranch
  • Southbank
  • Oak Run
  • Mockingbird Heights
  • Magnolia Springs

Services for Multifamily Developments

Residential Blower Door Testing

Identify and measure air leaks to meet IECC standards.

Duct Leakage Testing

Verify that your ductwork is sealed properly to avoid energy loss.

Insulation Inspections

Ensures that all installed insulation meets code requirements and is properly placed for energy efficiency and performance before drywall is installed.

Mechanical Ventilation

Verifies that a building’s ventilation system is delivering the correct amount of fresh air.

HERS Ratings & Energy Star Certification

Measure efficiency and stand out with proven performance.

COSA IB167: Keeping Your Build on Code

Testing and inspections needed to keep your project on schedule up

Energy Modeling

REScheck and Ekotrope modeling to confirm compliance before you build.

Talk to Our Local Team

Questions? Ready to schedule? Reach out today, and we’ll help you move your project forward without delays.

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What Our Clients Say

“At Williams-Hirsch Custom Builders, we have been using Lone Star Energy Efficiency to do our energy ratings, testing and inspections for a while now. Brittany and Clay are very informative and helpful. They are also local and are very familiar with the local and surrounding municipal requirements as well as what is best for our local climate conditions and most suitable practices. I would highly recommend them to anyone needing any energy services.”
Greg Hirsch
Greg HirschWilliams-Hirsch Custom Builder
"Lone Star was fantastic to work with – they are efficient, communicate effectively, solve problems on-site with other trades, and always put the customer first. In both Austin and Houston, Texas, they have been quick to price, schedule, and execute the project at hand, all while going above and beyond our expectations and needs. I would highly recommend getting in touch with Clay and Brittany at Lone Star for your next project."
Grayson Edgemont
Grayson EdgemontLIV Development
“Lone Star is awesome. They made the experience very simple and were a pleasure to work with. Please consider them for any future projects or needs your company may have with energy testing for code compliance.”
Juan Segura
Juan SeguraRoers Company
"Lone Star helped us with an IB 167 inspection. Clay came out and performed a blower door and duct leakage test for us. We received the paperwork quickly. I recommend this company 100%."
Linda Burgess
Linda Burgess
"The whole team at this company was very easy to work with. They were incredibly professional and provided very helpful information in the report after their inspection of my house."
Mary Hamman
Mary Hamman
"The City of San Antonio requires IB167 so we called Lone Star Energy Efficiency to help us out. The whole process was simple and easy."
Mark Armand
Mark Armand