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

Higher Education | Nov 21, 2023

UPitt at Bradford opens new Engineering & Information Technologies Building

The University of Pittsburgh at Bradford recently opened a new engineering and information technology building that adds urgently needed lab and instructional space to the campus. 

Education Facilities | Nov 9, 2023

Oakland schools’ central kitchen cooks up lessons along with 30,000 meals daily

CAW Architects recently completed a facility for the Oakland, Calif., school district that feeds students and teaches them how to grow, harvest, and cook produce grown onsite. The production kitchen at the Unified School District Central Kitchen, Instructional Farm, and Education Center, (“The Center”) prepares and distributes about 30,000 meals a day for district schools lacking their own kitchens.

Giants 400 | Oct 30, 2023

Top 170 K-12 School Architecture Firms for 2023

PBK Architects, Huckabee, DLR Group, VLK Architects, and Stantec top BD+C's ranking of the nation's largest K-12 school building architecture and architecture/engineering (AE) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report.

Giants 400 | Oct 30, 2023

Top 100 K-12 School Construction Firms for 2023

CORE Construction, Gilbane, Balfour Beatty, Skanska USA, and Adolfson & Peterson top BD+C's ranking of the nation's largest K-12 school building contractors and construction management (CM) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report.

Giants 400 | Oct 30, 2023

Top 80 K-12 School Engineering Firms for 2023

AECOM, CMTA, Jacobs, WSP, and IMEG head BD+C's ranking of the nation's largest K-12 school building engineering and engineering/architecture (EA) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report. 

Higher Education | Oct 10, 2023

Tracking the carbon footprint of higher education campuses in the era of online learning

With more effective use of their facilities, streamlining of administration, and thoughtful adoption of high-quality online learning, colleges and universities can raise enrollment by at least 30%, reducing their carbon footprint per student by 11% and lowering their cost per student by 15% with the same level of instruction and better student support.

Giants 400 | Sep 28, 2023

Top 80 University Building Engineering Firms for 2023

AECOM, Jacobs, BR+A, and Salas O'Brien head BD+C's ranking of the nation's largest university sector engineering and engineering/architecture (EA) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report. Note: This ranking includes revenue for all university/college-related buildings except student residence halls, sports/recreation facilities, laboratories, S+T-related buildings, parking facilities, and performing arts centers (revenue for those buildings are reported in their respective Giants 400 ranking).  

Giants 400 | Sep 28, 2023

Top 100 University Building Construction Firms for 2023

Turner Construction, Whiting-Turner Contracting Co., STO Building Group, Suffolk Construction, and Skanska USA top BD+C's ranking of the nation's largest university sector contractors and construction management firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report. Note: This ranking includes revenue for all university/college-related buildings except student residence halls, sports/recreation facilities, laboratories, S+T-related buildings, parking facilities, and performing arts centers (revenue for those buildings are reported in their respective Giants 400 ranking). 

University Buildings | Sep 27, 2023

Top 170 University Building Architecture Firms for 2023

Gensler, CannonDesign, Page Southerland Page, SmithGroup, and Ayers Saint Gross top the ranking of the nation's largest university sector architecture and architecture/engineering (AE) firms, as reported in Building Design+Construction's 2023 Giants 400 Report.

K-12 Schools | Sep 5, 2023

CHPS launches program to develop best practices for K-12 school modernizations

The non-profit Collaborative for High Performance Schools (CHPS) recently launched an effort to develop industry-backed best practices for school modernization projects. The Minor Renovations Program aims to fill a void of guiding criteria for school districts to use to ensure improvements meet a high-performance threshold. 

boombox1 - default
boombox2 -
native1 -

More In Category




Mass Timber

Bjarke Ingels Group designs a mass timber cube structure for the University of Kansas

Bjarke Ingels Group (BIG) and executive architect BNIM have unveiled their design for a new mass timber cube structure called the Makers’ KUbe for the University of Kansas School of Architecture & Design. A six-story, 50,000-sf building for learning and collaboration, the light-filled KUbe will house studio and teaching space, 3D-printing and robotic labs, and a ground-level cafe, all organized around a central core.

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