Top US States Leading LEED Green Building Certification in 2019

The U.S. Green Building Council (USGBC) published its annual ranking of the Top 10 States for LEED certified construction in early 2020, covering projects that earned certification throughout 2019. This widely followed list uses gross square footage per capita as its primary sorting metric, which creates a fair comparison between states of vastly different population sizes. Colorado claimed the top position for the first time since 2011, proving that mid-sized states with strong policy support and committed industry professionals can lead the country in sustainable building adoption. The ranking reflects a broader transformation in the construction industry, where energy efficiency, water conservation, and occupant health have become central design priorities rather than optional add-ons. For a closer look at how major industry awards are fueling this momentum, read about how the Holcim Awards Recognize The Most Innovative Sustainable Construction Projects In North America, which honor groundbreaking approaches to sustainable design and construction across the continent.

How the USGBC Ranks States for LEED Certification

The USGBC evaluates each state based on the total certified gross square footage of LEED projects divided by the state population. This per-capita approach levels the playing field so that smaller states like Hawaii and Colorado can compete fairly with larger states such as California and Texas. Rather than simply tallying raw square footage or project counts, the metric reveals which states are investing most heavily in green building relative to their population size. The 2019 rankings used 2010 U.S. Census data for population baselines and included commercial, institutional, and multifamily residential projects that achieved certification during the 2019 calendar year.

Projects pursuing LEED certification must demonstrate performance across several credit categories. Each category contributes points toward the final certification level, which ranges from Certified (40-49 points) through Silver (50-59), Gold (60-79), and Platinum (80+ points). The main categories are:

• Location and Transportation – Rewards compact development, brownfield remediation, and access to transit stops and bicycle networks
• Sustainable Sites – Protects ecosystems, manages stormwater runoff, and reduces heat island effects through reflective roofing and shaded hardscapes
• Water Efficiency – Reduces indoor water consumption through efficient fixtures and outdoor use through smart irrigation and drought-tolerant landscaping
• Energy and Atmosphere – The largest category, rewarding optimized energy performance, on-site renewable energy, and reduced greenhouse gas emissions
• Materials and Resources – Encourages sustainable material sourcing, construction waste diversion, and use of recycled content materials
• Indoor Environmental Quality – Improves air quality, access to daylight, thermal comfort, and occupant well-being through low-emitting materials and enhanced ventilation

One area where many projects lose valuable points is in the building envelope and fenestration specifications. Window performance, glazing selections, and curtain wall details directly affect energy modeling results and can make or break a certification target. Understanding Why Missing Fenestration Specifications Cost Building Projects Their Leed V4 1 Points can help architects and contractors avoid costly oversights that jeopardize credit achievement late in the design process.

Colorado Takes the Top Spot for the First Time Since 2011

Colorado certified 102 LEED projects in 2019, representing 23.96 million square feet of certified space and 4.76 square feet per resident. This marked the state highest-ever ranking, climbing from sixth place in 2018 to the number one position. Colorado has consistently appeared in the annual Top 10 list, but its surge to the top reflects a coordinated push by local governments in Denver, Boulder, and Fort Collins along with a growing community of developers and design firms committed to green building practices. The state benefitted from supportive municipal policies, including green building codes and density bonus programs that incentivize LEED certification.

A key factor driving Colorado success is the concentration of LEED professionals within the state. With 6,339 credentialed individuals, the state has a deep bench of experts who understand the documentation, commissioning, and verification processes required for certification. This skilled workforce makes it easier for project teams to pursue higher certification levels. For projects still operating under earlier versions of the rating system, understanding the transition path is essential. The detailed analysis on Leed 2009 Projects Getting Upgraded New Leed Online explains how building teams can migrate their projects to newer standards while maintaining certification status.

Complete 2019 Ranking and State-by-State Breakdown

The full ranking published by USGBC reveals a diverse mix of states from every region of the country. Here is the complete list with certified gross square footage, per-capita figures, project counts, and LEED professional numbers for each state:

Several interesting observations emerge from this data. California led all states in absolute terms with 400 certified projects and over 80 million square feet of certified space, roughly three times the total of second-place New York. However, its population of approximately 40 million residents pushed its per-capita figure to 2.17, placing it tenth on the list. Illinois stood out with a strong showing at number two, certifying 121 projects for 3.85 square feet per capita, driven largely by activity in the Chicago metropolitan area. Massachusetts and New York rounded out the top tier with per-capita figures above 3.70, reflecting the concentrated urban development patterns in the Northeast. Looking at historical trends provides useful context for these numbers. Our earlier analysis of the Top Us States Leading Leed Green Building Certification In 2016 shows how the rankings have shifted over time and which states have maintained consistent leadership.

The ranking reveals clear regional patterns. The Northeast and Mid-Atlantic regions are strongly represented at the top, while the Midwest, Mountain West, and Pacific regions also feature prominently. Washington, D.C. was excluded from the main ranking since it is a federal district rather than a state, but it would have placed first by a wide margin at 34.53 square feet per capita. Several other states narrowly missed the list. Texas certified 217 projects but achieved only 1.26 GSF per capita due to its large population. Washington State certified 87 projects at 2.05 GSF per capita, and Georgia certified 80 projects. For a broader perspective on how LEED adoption has evolved across regions, Top 10 States Leed Made List on Construction Specifier provides valuable historical context on state-level trends and emerging leaders over the years.

Tangible Benefits of LEED Certification for Building Owners

LEED certification delivers measurable returns that extend well beyond marketing recognition. Building owners consistently report lower utility expenses thanks to high-performance HVAC systems, efficient lighting designs, and water-conserving plumbing fixtures. Energy savings of 20 to 30 percent compared to conventionally constructed buildings are common, and these operational savings accumulate over the entire life of the building. Multiple studies have shown that LEED certified properties command higher rental rates, maintain higher occupancy levels, and achieve better resale values than comparable non-certified buildings.

For occupants, the advantages are equally compelling. Improved indoor air quality from enhanced ventilation and low-emitting materials reduces absenteeism and improves cognitive function. Access to natural daylight and views of the outdoors has been linked to better mood, higher productivity, and improved sleep quality. Thermal comfort controls give occupants more agency over their immediate environment. These features are especially valuable in workplace settings, where employee health and productivity directly affect the bottom line. Implementing green building features often requires coordination across multiple trades, from mechanical contractors to electrical specialists. The practical guidance on Hiring An Electrician For Home Renovation Projects is relevant here because electrical upgrades for smart lighting controls, energy monitoring systems, and electric vehicle charging stations are increasingly common in LEED projects.

1. Lower operating costs through high-performance building systems that reduce energy and water consumption over the entire building lifecycle
2. Higher asset valuation from an independent, third-party verified sustainability credential that differentiates properties in competitive markets
3. Healthier indoor environments with improved ventilation rates, low-VOC materials, and enhanced filtration that reduce indoor pollutant exposure
4. Reduced carbon emissions that align with corporate sustainability targets and help municipalities meet climate action plan goals
5. Financial incentives including tax abatements, density bonuses, expedited permitting, and grant programs available in many jurisdictions for certified projects

Technology Tools Supporting LEED Project Delivery

Technology plays an increasingly vital role in helping project teams achieve LEED certification efficiently and cost-effectively. Building information modeling (BIM) allows architects and engineers to simulate energy performance, daylighting, and thermal comfort before breaking ground. Energy modeling software calculates annual consumption and identifies optimization opportunities across the building envelope and mechanical systems. Commissioning management platforms verify that installed systems operate according to design intent. Document management systems streamline the credit tracking and submission process, reducing the administrative burden on project teams.

The ongoing digitization of construction workflows is making certification more accessible to smaller firms and projects. Cloud-based collaboration tools, automated building analytics, and sensor networks for ongoing performance monitoring are becoming standard components of green building delivery. Contractors and project managers who stay current with these innovations find it easier to pursue higher certification levels while controlling costs. Our comprehensive resource on Modern Tools Construction Projects examines how these digital solutions are reshaping project delivery and enabling better sustainability outcomes across the construction industry.

Conclusion: The Future of State-Level LEED Leadership

The 2019 Top 10 States for LEED ranking demonstrates that green building has become a mainstream priority across the United States. More than 105 million people live in the top-ranked states, and over 80,000 LEED credentialed professionals support the certification ecosystem nationwide. Colorado ascent to the top position proves that any state with strong policy support, an active design community, and committed building owners can compete at the highest level. As the USGBC continues to refine the LEED rating system through v4.1 and beyond, and as more cities adopt aggressive climate action plans, the competition among states will only intensify. Whether applied to urban high-rise towers, suburban office parks, campus buildings, or specialized infrastructure such as Surveying Construction Irrigation Projects, the core principles of LEED certification are reshaping how America approaches building design, construction, and operations for a more sustainable future.