SIG’s Technical Service Department offers a complete list of engineering solutions to support green building projects and that help you reduce your design and operation costs. With both design and operation backgrounds, our engineers work well with designers and facility managers alike. Our approach is an objective one that tells you everything you can do to improve your project or building, the associated costs vs. payback, and even the things that you are doing right. With experience on over 56 Million sf of engineering projects and credentials including: PE, CxA, CEM, CPMP, CBCP, and EIT, we are great at identifying ways in which you can save valuable resources and improve indoor air quality at any and all types of buildings.


ENERGY STAR Portfolio Manager Setup We benchmark hundreds of buildings each year (over 250 in 2017), and we are happy to help you get your accurate ENERGY STAR score today.  All you have to do is call, email, or leave us a message, and we will get right back to you: | 404.343.3835 |… more info

Energy Audits

Save Energy.  Reduce Operating Expenses. Energy audits can be inexpensive, yet detailed enough to yield big impact reductions and human health benefits. An energy audit is an active procedure to gather energy management data from building schedules and operational parameters. The data is analyzed for trends and energy-saving opportunities, and a summary report is created. Our… more info

Energy Modeling

Energy Modeling for New Construction The pre-design stage is the perfect time to start thinking about Energy Modeling and how your building will perform in regards to energy efficiency. Simple manipulations like shape, orientation, and window-to-wall ratio should be carefully selected to align with your sustainability goals. Our recommendation for a project pursuing an integrative… more info


What is Building Commissioning (Cx)? Commissioning (Cx) is the process of testing all the systems and components in a building to ensure that all of the equipment is setup, operating, and maintained as it was designed. Very simply, Cx, is the process of having an expert Commissioning Authority (CxA) comb through a building and all… more info


For a 50-story building in New York City, Sustainable Investment Group (SIG) uncovered over half a million dollars worth of operating expense savings in the first year through the Retro-Commissioning (RCx) process. The SIG team gets these results because we know where to look and what actions deliver results. Don’t risk your operating budget with an… more info

Air Quality Services

Indoor Air Quality (IAQ) Testing Sustainable Investment Group (SIG) understands the importance of good air quality in relation to human health. It’s important to check the air before occupancy, as well as test existing systems during operations. SIG has experience at every phase of your building’s lifetime, and our goal is healthier indoor environments for everyone.  You… more info

Local Law Compliance

This page includes local law compliance information for the following cities: Atlanta, GA Austin, TX Boston, MA Chicago, IL Minneapolis, MN New York, NY Philadelphia, PA Seattle, WA Washington, DC Please check out our ENERGY STAR page for videos on how to setup ENERGY STAR Portfolio Manager and comply with the Atlanta Building Efficiency Ordinance. The… more info