Insights

Sustainability Focus Non-profit focused on redesigning school architectures to empower learners, presenting opportunities to align with education innovations, donor engagement programs, and impact storytelling that resonates with grantmakers and corporate sponsors.

Funding Scale Revenue is in the mid six figures to lower seven figures range, indicating a solid funding base with potential for larger partnerships, programs, and multi-year sponsorships with education technology, assessment, and student analytics vendors.

Tech Stack Fit Active use of WordPress, Google Workspace, Stripe, analytics tools, and e-commerce platforms suggests openness to digital fundraising solutions, CRM upgrades, learning platform integrations, and secure donation processing enhancements.

Growth Alignment Similar peers show diverse school-network models with scalable operations, signaling opportunities for scalable program management software, collaboration tools, and stakeholder management platforms to support expansion.

Mission-Centric Narrative Clear focus on learner empowerment and agency creates strong storytelling hooks for impact reporting, donor transparency dashboards, and partnerships around metrics that matter to funders and researchers.

Similar companies to Building 21

Building 21 Tech Stack

Building 21 uses 8 technology products and services including AdRoll, Hotjar, Matomo, and more. Explore Building 21's tech stack below.

Building 21's Email Address Formats

Building 21 uses at least 4 email formats:
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

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.

How much revenue does Building 21 generate?

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As of August 2026, Building 21's annual revenue is estimated to be $10M - $25M.

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 August 2026, Building 21 has approximately 27 employees across 2 continents, including North America and Africa. Key team members include Tutor: A. B. 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 AdRoll, Hotjar, Matomo, WordPress, Shopify, Google Workspace, Stripe and Piwik PRO Core.

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 logo

Building 21

Non-profit OrganizationsPennsylvania, United States11-50 Employees

Building 21 is a nonprofit organization based in Philadelphia, Pennsylvania, that reimagines secondary schooling to meet the needs of all learners. It partners with communities, families, students, teachers, educational leaders, and school districts to design, open, and operate new high schools, aiming to create learning environments where students progress at their own pace and engage with relevant content while developing real-world skills. The organization operates within the education sector, focusing on high school reform by integrating adaptable curricula and practical application, with the goal of making secondary education more inclusive and meaningful for diverse learners. While its exact founding date is not provided, Building 21 positions itself as a collaborator across communities to develop and run new high schools in the region, reflecting a model that links classroom experience with real-world contexts.

Section iconCompany Overview

NAICS Code
813 - Religious, Grantmaking, Civic, Professional, and Similar Organizations
Founded
2013
Employees
11-50

Section iconFunding & Financials

  • $10M - $25M

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

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