flexiblefullpage -
billboard - default
interstitial1 - interstitial
catfish1 - bottom
Currently Reading

Average age of U.S. school buildings is just under 50 years

K-12 Schools

Average age of U.S. school buildings is just under 50 years

About half of schools have never had a major renovation


By Peter Fabris, Contributing Editor  | February 29, 2024
Photo by Mary Taylor

Photo by Mary Taylor

The average age of a main instructional school building in the United States is 49 years, according to a survey by the National Center for Education Statistics (NCES)

About 38% of schools were built before 1970. Roughly half of the schools surveyed have undergone a major building renovation or addition. Of those that have been renovated, the average age of the renovation was 14 years.

Major repair, renovation, or modernization work was being performed in 21% of all public schools surveyed as of December 2023. Indoor air quality is a major focus for many schools, with 39% having an indoor air quality coordinator on campus. This position is responsible for monitoring air quality conditions at the school and reporting air quality issues and complaints.

Some 60% of schools have designated vehicle loading and unloading areas at least 25 feet from all building air intakes, including doors and windows. Eighteen % of schools have an anti-idling program that includes signage and active monitoring during pick-up and drop-off times.

Some 31% of public schools have one or more non-permanent (portable) buildings in use.

Here are other findings from the NCES public school building survey:

The average age of the main instructional building is 49 years old. The following %ages of reporting public schools’ main instructional buildings were built during the following time periods:

  • Pre-1970: 38%
  • 1970 – 1999: 21%
  • 2000 – present: 20%

Nearly all public schools (93%) reported having some kind of athletic amenities on-site. The most commonly reported types of facilities were:

  • A gymnasium (69%)
  • All-purpose grass field (68%)
  • Outdoor basketball court (56%)
  • Baseball/softball field (38%)
  • Weight room (29%)
  • Outdoor track (28%)

Most public schools have dedicated library space available (89%).

Compared to the national estimate (89%), higher percentages of public schools with the following characteristics reported having dedicated library space available:

  • With 500-999 students (96%)
  • With a student body made up of 0-25% students of color (96%)
  • In rural areas (94%)
  • With 300-499 students (93%)
  • Elementary schools (93%)
  • In low-poverty neighborhoods (92%)

Compared to the national estimate (89%), lower percentages of public schools with the following characteristics reported having dedicated library space available:

  • In cities (84%)
  • In high-poverty neighborhoods (81%)
  • With a student body made up of 76% or more students of color (80%)
  • High/secondary schools (80%)
  • With 0-299 students (77%)

Related Stories

K-12 Schools | Jul 31, 2023

Austin’s new Rosedale School serves students with special needs aged 3 to 22

In Austin, the Rosedale School has opened for students with special needs aged 3 to 22. The new facility features sensory rooms, fully accessible playgrounds and gardens, community meeting spaces, and an on-site clinic. The school serves 100 learners with special needs from across Austin Independent School District (ISD).

Market Data | Jul 24, 2023

Leading economists call for 2% increase in building construction spending in 2024

Following a 19.7% surge in spending for commercial, institutional, and industrial buildings in 2023, leading construction industry economists expect spending growth to come back to earth in 2024, according to the July 2023 AIA Consensus Construction Forecast Panel. 

School Construction | Jun 29, 2023

K-12 school construction: 5 ways strong community relations can lead to success

When constructing a K-12 school, building positive relationships with the community—including students, parents, school staff and residents—is critical to the success of the project. Here are five ways Skanska puts the community first when building K-12 schools in the Pacific Northwest.

Standards | Jun 26, 2023

New Wi-Fi standard boosts indoor navigation, tracking accuracy in buildings

The recently released Wi-Fi standard, IEEE 802.11az enables more refined and accurate indoor location capabilities. As technology manufacturers incorporate the new standard in various devices, it will enable buildings, including malls, arenas, and stadiums, to provide new wayfinding and tracking features.

Engineers | Jun 14, 2023

The high cost of low maintenance

Walter P Moore’s Javier Balma, PhD, PE, SE, and Webb Wright, PE, identify the primary causes of engineering failures, define proactive versus reactive maintenance, recognize the reasons for deferred maintenance, and identify the financial and safety risks related to deferred maintenance.

K-12 Schools | Jun 5, 2023

How to achieve cost-effective kindergarten classrooms

Educational architect Robin Randall shares realistic advice about the challenges of adding developmentally appropriate, play-based kindergarten classrooms while respecting budget limitations.

K-12 Schools | May 30, 2023

K-12 school sector trends for 2023

Budgeting and political pressures aside, the K-12 school building sector continues to evolve. Security remains a primary objective, as does offering students more varied career options. 

K-12 Schools | May 25, 2023

From net zero to net positive in K-12 schools

Perkins Eastman’s pursuit of healthy, net positive schools goes beyond environmental health; it targets all who work, teach, and learn inside them.

K-12 Schools | May 22, 2023

The revival of single-building K-12 schools

Schools that combine grades PK through 12 are suddenly not so uncommon. Education sector experts explain why. 

K-12 Schools | May 17, 2023

Designing K-12 schools for students and safety

While bullying, mental health, and other acts of violence are all too common in schools today, designers have shown that smart and subtle preventive steps can make a big difference. Clark Nexsen’s Becky Brady shares how prevention and taking action at the design level can create safe and engaging learning environments. 

boombox1 - default
boombox2 -
native1 -

More In Category



K-12 Schools

K-12 school design trends for 2024: health, wellness, net zero energy 

K-12 school sector experts are seeing “healthiness” for schools expand beyond air quality or the ease of cleaning interior surfaces. In this post-Covid era, “healthy” and “wellness” are intersecting expectations that, for many school districts, encompass the physical and mental wellbeing of students and teachers, greater access to outdoor spaces for play and learning, and the school’s connection to its community as a hub and resource.


K-12 Schools

Video: Research-based design for K-12 schools

Two experts from national architecture firm PBK discuss how behavioral research is benefiting the design of K-12 schools in Texas, Florida, and other states. Dan Boggio, AIA, LEED AP, NCARB, Founder & Executive Chair, PBK, and Melissa Turnbaugh, AIA, NCARB, Partner & National Education & Innovation Leader, PBK, speak with Robert Cassidy, Executive Editor, Building Design+Construction.

halfpage1 -

Most Popular Content

  1. 2021 Giants 400 Report
  2. Top 150 Architecture Firms for 2019
  3. 13 projects that represent the future of affordable housing
  4. Sagrada Familia completion date pushed back due to coronavirus
  5. Top 160 Architecture Firms 2021