Insights

Innovative Education Models Building 21's focus on reimagining secondary education through personalized learning and real-world application positions it as an active innovator in edtech, creating opportunities for partnerships in classroom technology, curriculum development, and student engagement platforms.

Growing Non-Profit Sector With a revenue range of 10 to 25 million and multiple similar organizations with large employee bases, Building 21 presents a significant opportunity to provide scalable solutions in nonprofit management, fundraising technology, and community engagement tools.

Technology Utilization The organization employs a diverse tech stack including analytics, content management, and SEO tools, indicating a readiness to integrate advanced digital solutions such as data analytics platforms, learning management systems, or online outreach tools to enhance its educational offerings.

Partnership Potential Building 21 actively collaborates with educational communities, families, and districts, making it an ideal partner for companies offering education consulting, program development, or collaborative platform solutions to expand its reach and impact.

Regional Expansion Opportunities Located in Philadelphia and partnered with a network of similar organizations nationwide, Building 21 is positioned for potential expansion or replication of its models, opening avenues for solutions that support scaling, sustainability, and multi-site management systems.

Building 21 Tech Stack

Building 21 uses 8 technology products and services including Facebook Pixel, Google Hosted Libraries, Shopify, and more. Explore Building 21's tech stack below.

  • Facebook Pixel
    Analytics
  • Google Hosted Libraries
    Content Delivery Network
  • Shopify
    E-commerce
  • jQuery Migrate
    Javascript Libraries
  • Lodash
    Javascript Libraries
  • Yoast SEO
    Search Engines
  • HSTS
    Security
  • Akismet
    Web Platform Extensions

Media & News

Building 21's Email Address Formats

Building 21 uses at least 2 format(s):
Building 21 Email FormatsExamplePercentage
Last@b-21.orgDoe@b-21.org
50%
First@b-21.orgJohn@b-21.org
40%
FLast@b-21.orgJDoe@b-21.org
10%
FLast@building21.orgJDoe@building21.org
100%

Frequently Asked Questions

Where is Building 21's headquarters located?

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Building 21's main headquarters is located at Philadelphia, Pennsylvania United States. The company has employees across 2 continents, including North AmericaAfrica.

What is Building 21's official website and social media links?

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Building 21's official website is building21.org and has social profiles on LinkedIn.

What is Building 21's NAICS code?

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Building 21's NAICS code is 813 - Religious, Grantmaking, Civic, Professional, and Similar Organizations.

How many employees does Building 21 have currently?

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As of April 2026, Building 21 has approximately 28 employees across 2 continents, including North AmericaAfrica. Key team members include Vice President Human Resources: R. A.Head Of Instruction: B. M.Co-Founder: L. S.. Explore Building 21's employee directory with LeadIQ.

What industry does Building 21 belong to?

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Building 21 operates in the Non-profit Organizations industry.

What technology does Building 21 use?

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Building 21's tech stack includes Facebook PixelGoogle Hosted LibrariesShopifyjQuery MigrateLodashYoast SEOHSTSAkismet.

What is Building 21's email format?

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Building 21's email format typically follows the pattern of Last@b-21.org. Find more Building 21 email formats with LeadIQ.

When was Building 21 founded?

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Building 21 was founded in 2013.

Building 21

Non-profit OrganizationsPennsylvania, United States11-50 Employees

Building 21 is a nonprofit organization that is reimagining secondary schooling to meet the needs of all learners.  Building 21 partners with communities, families, students, teachers, educational leaders and school districts to design, open and operate new high schools.  Our learning model allows students to learn at their own pace, to engage with content and curriculum that they find interesting and relevant, and to apply and further develop their skills in real-world environments.

Section iconCompany Overview

Headquarters
Philadelphia, Pennsylvania United States
NAICS Code
813 - Religious, Grantmaking, Civic, Professional, and Similar Organizations
Founded
2013
Employees
11-50

Section iconMedia & News

Section iconFunding & Financials

  • $10M$25M

    Building 21's revenue is estimated to be in the range of $10M$25M

Section iconFunding & Financials

  • $10M$25M

    Building 21's revenue is estimated to be in the range of $10M$25M

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